JP2015221694A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag capable of being torn along a cutting line by devising of a form and a combination of the cutting line formed in the front and the rear of the packaging bag, and preventing the occurrence of a crack of aluminum on the cutting line.SOLUTION: A packaging bag including laminates each having inner layers, intermediate layers, and outer layers, having heat seal portions of right and left side end edges at end edges opposed to each other. In both outer edges of the heat seal portions of right and left side end edges, I notches having the same positions in a vertical direction which are parallel to the heat seal portions of right and left side end edges. In one of the outer layers of the laminates, a first cutting line having the same position in the vertical direction as that of one of the I noches and having a starting point and an end point in a right or left side in the heat seal portions of right and left side end edges is continuously formed. In the other of the outer layers, a second cutting line having the same position in the vertical direction as that of one of the I noches and having a starting point and an end point in a right or left side in the heat seal portions of right and left side end edges is continuously formed at a different position from that of the first cutting line in a plain view. When the packaging bag is opened by being torn in a lateral direction from one of the I notches, a level difference is generated in a tearing opening part.

Description

  The present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful and the outline of the tear opening is different so that a step for easily opening with fingers can be formed. The present invention relates to a packaging bag, and further to a packaging bag having a resealing function by providing a synthetic resin bite composed of a male member and a female member that are engaged with each other at opposing positions on the inner surface of the packaging bag. .

  Conventionally, in a three-side seal type, four-side seal type, or standing type packaging bag, the outer edge of the front side laminate constituting the packaging bag starts from the outer edge of the left edge thermal bonding portion, and the right edge heat A continuous first cut line is formed with the outer edge of the bonded portion as the end point (the position of the starting point and the end point in the height direction [the direction parallel to the left and right side edge thermal bonding portions] is the same), and the packaging bag is configured. In the outer layer of the back side laminate, the outer edge of the left edge thermal bonding part is the starting point, and the outer edge of the right edge thermal bonding part is the end point (the height direction of the starting point and end point [parallel to the left and right side edge thermal bonding parts A second cut line that is continuous as the direction of the direction] is formed, and a part of the formation positions of the first cut line and the second cut line on the rectangular plane of the laminate in a state where the packaging bag is viewed in plan By making it different, the first cut line and the second cut line When the upper end side of the packaging bag is torn open in the width direction (the direction orthogonal to the left and right side edge thermal bonding portions), the outer side of the cut surface of the laminate on the front side that forms the tear opening and the back side lamination There has been proposed a packaging bag in which an opening when a content is taken out is made easier by making a difference in a tear opening by making the outline of a cut surface of the body different (see, for example, Patent Document 1).

  Furthermore, a packaging bag is also proposed in which a step is created in the same kind of tear opening to facilitate opening when the contents are taken out, and a packaging bag having a reseal function (see, for example, Patent Document 2). ).

  Here, as in the second embodiment of the packaging bag described in Patent Document 1 or the packaging bag described in Patent Document 2, one of the first cut line and the second cut line (for example, the back side) is used. A straight cut line of one of the laminates along the straight cut line, with a straight cut line and the other (for example, the front side) an irregular (non-linear) cut line swollen to the lower end side. A tongue-shaped step due to a combination of a general outline and an arc-shaped outline of the cut surface of the other laminate along the cut line bulging on the lower end side is most desirable as a step for easily opening with fingers It is said that.

  Furthermore, the 1st cut line and the 2nd cut line are right and left side edges like the packaging bags described in 1st-5th embodiment of the packaging bag described in patent document 1, or patent document 2. If the outer edge of the thermal bonding part is used as a starting point and has a straight score line extending inward (left and right direction) to reach the inner edge of the left and right side edge thermal bonding parts, the left and right side edge thermal bonding parts Since the cut line of the outer layer of the front side laminate that constitutes the front and the cut line of the outer layer of the back side laminate substantially coincide, the location of the straight cut line formed in the left and right side edge thermal bonding portions In this case, the top end of the packaging bag is bent and the appearance of the product (the contents sealed in the packaging bag is sealed) is very bad, and the packaging bag may be subject to return. There are even cases where it is recognized as a completely defective product.

JP 2005-289396 A JP 2003-104394 A

  The present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful, and the outer surface of the laminate on the front and back sides of the tear opening is different, resulting in a difference in level. A packaging bag having at least an outer layer that can be opened in the middle, an intermediate layer made of aluminum foil, and an inner layer made of a heat-adhesive resin, and the cut formed on the front and back laminates constituting the packaging bag By devising the shape of the line of sight and the combination thereof, the packaging bag can be torn without tearing away from the cut line even if it tears in the tearing direction at the time of opening, specifically the front side or the back side The first task is to provide

  Furthermore, it is a second object to provide a packaging bag in which bending or aluminum cracking does not occur on the upper end side of the packaging bag at the position where the score line is formed.

  Furthermore, it is a third object of the present invention to provide a packaging bag having a resealing function by providing a synthetic resin occlusion device made up of a male member and a female member that are engaged with each other at opposing positions on the inner surface of the packaging bag. Let it be an issue.

In order to achieve the above object, the present inventor described in claim 1
Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin,
At least left and right side edge thermal bonding portions are formed at opposing positions of a pair of left and right side edge edges, and the outer layer of the left side edge thermal bonding portion is formed on one outer layer of the laminate. With the position retracted inward as a starting point, the position retracted inward from the outer edge of the right side edge thermal bonding portion that has the same vertical position parallel to the starting point and the left and right side edge thermal bonding portions Form the first cut line as the end point,
Up and down direction parallel to the starting point and the left and right side edge thermal bonding portions, starting from a position retracted inward from one outer edge of the left side edge thermal bonding portion on the other outer layer of the laminate Forming a second cut line having an end point at a position retracted inwardly from the outer edge of the right side edge thermal bonding portion having the same position as
Forming a starting side I notch through the left side edge thermal bonding portion at a position that does not reach the inner edge of the left side edge thermal bonding portion from the outer edge of the left side edge thermal bonding portion;
By making the formation positions of the first cut line and the second cut line different in a plan view of the laminate, the upper end side of the packaging bag is moved along the first cut line and the second cut line. When a tear opening is made in the left-right direction perpendicular to the left and right side edge thermal bonding portions, the outer surface of one cut surface of the laminate and the outer surface of the other cut surface of the laminate are formed. A packaging bag that creates a step in the tear opening by making it different,
The first cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
Arranged between a plurality of cut lines on the start side and a plurality of cut lines on the end point side, branching from the close end side of the plurality of cut lines on the start side and branching a plurality of cuts on the end side And at least a plurality of central cut lines converging on the close end side of the line of sight,
The second cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
The central side that reaches in the left-right direction perpendicular to the left and right side edge thermal bonding portions from the adjacent portion of the plurality of score lines on the starting point side and reaches the adjacent portion of the plurality of score lines on the end point side A single score line,
At least,
The formation position of the plurality of central score lines constituting the first score line in the planar view of the laminate is configured by a score line bulging on the upper end side and a score line bulging on the lower end side,
With respect to the two outer cut lines located on the outermost side among the plurality of cut lines on the start point side that constitute the first cut line in the plan view of the laminate, the left side of the start side I notch An extension line extending in the left-right direction perpendicular to the left and right side edge thermal bonding portions from the tip on the inner edge side of the side edge thermal bonding portion is provided at a position where it intersects with the region between the two outer cut lines. And
One score line on the center side of the second score line passes through a position corresponding to between the score line bulging on the upper end side and the score line bulging on the lower end side of the first score line.
It is characterized by that.

The present invention according to claim 2
Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin,
At least left and right side edge thermal bonding portions are formed at opposing positions of a pair of left and right side edge edges, and the outer layer of the left side edge thermal bonding portion is formed on one outer layer of the laminate. With the position retracted inward as a starting point, the position retracted inward from the outer edge of the right side edge thermal bonding portion that has the same vertical position parallel to the starting point and the left and right side edge thermal bonding portions Form the first cut line as the end point,
Up and down direction parallel to the starting point and the left and right side edge thermal bonding portions, starting from a position retracted inward from one outer edge of the left side edge thermal bonding portion on the other outer layer of the laminate Forming a second cut line having an end point at a position retracted inwardly from the outer edge of the right side edge thermal bonding portion having the same position as
A starting point provided with a wide end at the position of the outer edge of the left side edge thermal bonding portion and a second end whose width is concentrated at a position not reaching the inner edge of the left side edge thermal bonding portion Forming a side tear initiation region through the left side edge thermal bond,
By making the formation positions of the first cut line and the second cut line different in a plan view of the laminate, the upper end side of the packaging bag is moved along the first cut line and the second cut line. When a tear opening is made in the left-right direction perpendicular to the left and right side edge thermal bonding portions, the outer surface of one cut surface of the laminate and the outer surface of the other cut surface of the laminate are formed. A packaging bag that creates a step in the tear opening by making it different,
The first cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
Arranged between a plurality of cut lines on the start side and a plurality of cut lines on the end point side, branching from the close end side of the plurality of cut lines on the start side and branching a plurality of cuts on the end side And at least a plurality of central cut lines converging on the close end side of the line of sight,
The second cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
The central side that reaches in the left-right direction perpendicular to the left and right side edge thermal bonding portions from the adjacent portion of the plurality of score lines on the starting point side and reaches the adjacent portion of the plurality of score lines on the end point side A single score line,
At least,
The formation position of the plurality of central score lines constituting the first score line in the planar view of the laminate is configured by a score line bulging on the upper end side and a score line bulging on the lower end side,
The left side of the starting side tear initiation region with respect to the two outer side cutting lines positioned on the outermost side among the plurality of starting side cutting lines constituting the first cutting line in the plan view of the laminate. An extension line extending in the left-right direction perpendicular to the left and right edge thermal bonding portions from the aggregated other end on the inner edge side of the side edge thermal bonding portion intersects with the region between the two outer cut lines. It is provided at the position to
One score line on the center side of the second score line passes through a position corresponding to between the score line bulging on the upper end side and the score line bulging on the lower end side of the first score line. It is characterized by.

Further, the present invention described in claim 3
Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin,
At least left and right side edge thermal bonding portions are formed at opposing positions of a pair of left and right side edge edges, and the outer layer of the left side edge thermal bonding portion is formed on one outer layer of the laminate. With the position retracted inward as a starting point, the position retracted inward from the outer edge of the right side edge thermal bonding portion that has the same vertical position parallel to the starting point and the left and right side edge thermal bonding portions Form the first cut line as the end point,
Up and down direction parallel to the starting point and the left and right side edge thermal bonding portions, starting from a position retracted inward from one outer edge of the left side edge thermal bonding portion on the other outer layer of the laminate Forming a second cut line having an end point at a position retracted inwardly from the outer edge of the right side edge thermal bonding portion having the same position as
In the vicinity of the outer edge of the left side edge thermal bonding portion, forming a starting side tear start region consisting of a scar group formed through the left side edge thermal bonding portion,
By making the formation positions of the first cut line and the second cut line different in a plan view of the laminate, the upper end side of the packaging bag is moved along the first cut line and the second cut line. When a tear opening is made in the left-right direction perpendicular to the left and right side edge thermal bonding portions, the outer surface of one cut surface of the laminate and the outer surface of the other cut surface of the laminate are formed. A packaging bag that creates a step in the tear opening by making it different,
The first cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
Arranged between a plurality of cut lines on the start side and a plurality of cut lines on the end point side, branching from the close end side of the plurality of cut lines on the start side and branching a plurality of cuts on the end side And at least a plurality of central cut lines converging on the close end side of the line of sight,
The second cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
The central side that reaches in the left-right direction perpendicular to the left and right side edge thermal bonding portions from the adjacent portion of the plurality of score lines on the starting point side and reaches the adjacent portion of the plurality of score lines on the end point side A single score line,
At least,
The formation position of the plurality of central score lines constituting the first score line in the planar view of the laminate is configured by a score line bulging on the upper end side and a score line bulging on the lower end side,
The origin side tear initiation region is
Two outer score lines located on the outermost side among the plurality of score lines on the starting point side constituting the first score line in the planar view of the laminate;
A first extension line extending in the left-right direction passing through the uppermost end of the two outer cut lines and orthogonal to the left and right edge thermal bonding portions;
A second extension line extending in the left-right direction passing through the lowermost end of the two outer cut lines and orthogonal to the left and right edge thermal bonding portions;
An outer edge of the left side edge thermal bonding portion;
It is provided in the area surrounded by
One score line on the center side of the second score line passes through a position corresponding to between the score line bulging on the upper end side and the score line bulging on the lower end side of the first score line. It is characterized by.

Further, the present invention according to claim 4 provides
Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin,
At least left and right side edge thermal bonding portions are formed at opposing positions of a pair of left and right side edge edges, and the outer layer of the left side edge thermal bonding portion is formed on one outer layer of the laminate. With the position retracted inward as a starting point, the position retracted inward from the outer edge of the right side edge thermal bonding portion that has the same vertical position parallel to the starting point and the left and right side edge thermal bonding portions Form the first cut line as the end point,
Up and down direction parallel to the starting point and the left and right side edge thermal bonding portions, starting from a position retracted inward from one outer edge of the left side edge thermal bonding portion on the other outer layer of the laminate Forming a second cut line having an end point at a position retracted inwardly from the outer edge of the right side edge thermal bonding portion having the same position as
In the vicinity of the outer edge of the left side edge thermal bonding portion, forming a starting side tear start region consisting of a scar group formed through the left side edge thermal bonding portion,
By making the formation positions of the first cut line and the second cut line different in a plan view of the laminate, the upper end side of the packaging bag is moved along the first cut line and the second cut line. When a tear opening is made in the left-right direction perpendicular to the left and right side edge thermal bonding portions, the outer surface of one cut surface of the laminate and the outer surface of the other cut surface of the laminate are formed. A packaging bag that creates a step in the tear opening by making it different,
The first cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
Arranged between a plurality of cut lines on the start side and a plurality of cut lines on the end point side, branching from the close end side of the plurality of cut lines on the start side and branching a plurality of cuts on the end side And at least a plurality of central cut lines converging on the close end side of the line of sight,
The second cut line is
A plurality of cut lines on the starting point side extending from the starting point toward the inside and extending so as to approach each other;
A plurality of score lines on the end point side extending from the end point toward the inside and extending so as to approach each other;
The central side that reaches in the left-right direction perpendicular to the left and right side edge thermal bonding portions from the adjacent portion of the plurality of score lines on the starting point side and reaches the adjacent portion of the plurality of score lines on the end point side A single score line,
At least,
The formation position of the plurality of central score lines constituting the first score line in the planar view of the laminate is configured by a score line bulging on the upper end side and a score line bulging on the lower end side,
In the first cut line,
The inner ends of the plurality of score lines on the starting point side are configured to be close to each other with a gap therebetween,
The inner ends of the plurality of score lines on the end point side are configured to be close to each other with an interval between them,
The origin side tear initiation region is
Two outer score lines located on the outermost side among the plurality of score lines on the starting point side constituting the first score line in the planar view of the laminate;
A first extension line extending in the left-right direction passing through the uppermost end of the two outer cut lines and orthogonal to the left and right edge thermal bonding portions;
A second extension line extending in the left-right direction passing through the lowermost end of the two outer cut lines and orthogonal to the left and right edge thermal bonding portions;
An outer edge of the left side edge thermal bonding portion;
A line connecting the inner ends of the two outer cut lines;
It is provided in the area surrounded by
One score line on the center side of the second score line passes through a position corresponding to between the score line bulging on the upper end side and the score line bulging on the lower end side of the first score line. It is characterized by.

Moreover, this invention of Claim 5 is a packaging bag of Claim 4,
In the first cut line,
The start side end portions of the plurality of center-side cut lines start from a position outside the inner edge of the left side edge thermal bonding portion, and the start points are the plurality of cut lines on the start side. Located in the area between the inner edges at
The end portions on the end side of the plurality of score lines on the center side have a position outside the inner edge of the right side edge thermal bonding portion as an end point, and the end points are a plurality of score lines on the end side. The packaging bag of Claim 4 arrange | positioned in the area | region between the inner edge parts.

Moreover, this invention of Claim 6 is a packaging bag in any one of Claims 1-4. WHEREIN: The said 1st cut line is
A single cut on the starting point side that reaches inward from the inner edge of the edge thermal bonding portion on the starting point side, proceeding in a direction orthogonal to the edge thermal bonding portion from a portion adjacent to the plurality of cut lines on the starting point side Eyes
A single cut on the end point side that reaches inward from the inner edge of the end edge thermal bonding portion on the end point side, proceeding in a direction orthogonal to the end edge thermal bonding portion from a portion adjacent to the plurality of cut lines on the end point side Eyes
Further comprising
The plurality of score lines on the central side branch from the end of one score line on the start point side and converge at the end of one score line on the end point side.

Moreover, this invention of Claim 7 is a packaging bag in any one of Claims 1-6. WHEREIN: The position where the inner surface of the packaging bag of the lower end side of the said 1st cut line and a 2nd cut line opposes. In addition, a synthetic resin occlusion device comprising a protruding male member and a concave female member which are engaged with each other is provided,
The male member and the female member are engaged to provide a reseal function.

  According to this invention, when the surface having the first cut line of the packaging bag is directed toward the front, the I notch on the starting side or the region on the upper end side from the tear start region is picked with fingers, and the packaging bag is Of the two laminates that compose, the front laminate is torn at the left side edge thermal bond at the origin I-notch or tear initiation region, and the origin I-notch tip or tear Tearing progresses inward from the start region, and either the tip of the I-notch on the start side, or a plurality of cut lines on the start side adjacent to the inside of the tear start region, or a plurality of cut lines on the start side From now on, either the cut line that swells to the lower end of the plurality of cut lines on the center side that follows this, or the multiple cut lines on the end point side that follows this A tear line is formed along the Tear line lines tear reaches the outer end of the side edge heat seal portion of the right is formed.

  On the other hand, when the I notch on the origin side or the region on the upper end side from the tear start region is picked with fingers and torn to the back side, the laminate on the front side of the two laminates constituting the packaging bag is the origin side Tear is started from the I notch or tear start region of the front side, and the laminate on the near side starts to tear from the I notch on the left side edge or the tear start region at the left side edge thermal bonding portion. Tear progresses inward from the tip or tear start region, and either the tip of the I-notch on the start side or a plurality of cut lines on the start side adjacent to the inside of the tear start region or a plurality of on the start side It intersects with the adjacent part of the cut line, and from now on, the cut line that swells to the upper end among the multiple cut lines on the center side that follows this, and the multiple cut lines on the end point side that follows this A tear line is formed along one of the Continuing with can, line tear tear line reaches the outer end of the side edge heat seal portion of the right is formed.

  Therefore, even if the user grasps the I notch on the starting side or the region on the upper end side with respect to the tear start region with a finger and tears it to the near side or the far side, the user can tear without departing from the cut line.

  Furthermore, neither the first cut line nor the second cut line formed in the left and right side edge thermal bonding portions of the packaging bag reaches the outer ends of the left and right side edge thermal bonding portions. In the packaging bag of the present invention, the probability that the upper end side of the packaging bag is bent or aluminum cracks can be considerably reduced at the position where the first cut line and the second cut line are formed.

  Furthermore, a synthetic resin occlusion device comprising a protruding male member and a concave female member that mesh with each other is provided at a position opposite to the inner surface of the packaging bag on the lower end side of the cut line of the packaging bag. And it can be set as the packaging bag provided with a resealing function by biting the said male member and the said female member.

It is a top view which shows diagrammatically the positional relationship of the cut line of the packaging bag concerning this invention, and a bite. It is a figure which shows the XX sectional view of FIG. It is a principal part top view which shows 1st Embodiment which combined I notch with the score line formed in the packaging bag concerning this invention. (A) is a figure which shows the YY line cross section of FIG. 3 schematically, (b) is a figure which shows the ZZ line cross section of FIG. 3 schematically. It is a principal part top view which shows 2nd Embodiment which combined I notch with the score line formed in the packaging bag concerning this invention. It is a principal part top view which shows 3rd Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention. It is a principal part top view which shows diagrammatically 4th Embodiment which combined the U-shaped notch with the score line formed in the packaging bag concerning this invention. It is a principal part top view which shows 5th Embodiment which combined the V-shaped notch with the score line formed in the packaging bag concerning this invention. It is a principal part top view which shows schematically 6th Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention. It is a principal part top view which shows 7th Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention. It is an opening figure of the state which left one side edge thermal adhesive part of the packaging bag shown in FIG. It is a principal part top view which shows 8th Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention. It is a principal part top view of FIG. It is a principal part top view which shows schematically 9th Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention.

The above-described present invention will be described in detail below with reference to the drawings.
In addition, in this paragraph, the relationship between the components with the reference numerals and the component requirements stipulated in the claims is explained in parentheses.
1 is a plan view schematically showing the positional relationship between a cut line and a bite of a packaging bag according to the present invention, FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. 1, and FIG. FIG. 4A is a plan view schematically showing a cross section along line YY in FIG. 3, and FIG. 4A is a plan view schematically showing a first embodiment in which an I notch is combined with a cut line formed in such a packaging bag. b) is a diagram schematically showing a cross section taken along the line ZZ in FIG. 3, and FIG. 5 is a plan view schematically showing a second embodiment in which an I notch is combined with a score line formed in the packaging bag according to the present invention. FIG. 6, FIG. 6 is a plan view of an essential part schematically showing a third embodiment in which a V-shaped notch is combined with a cut line formed in the packaging bag according to the present invention, and FIG. 7 is formed in the packaging bag according to the present invention. FIG. 8 is a plan view of an essential part schematically showing a fourth embodiment in which a U-shaped notch is combined with a cut line to be formed, and FIG. 8 is formed in a packaging bag according to the present invention. The principal part top view which shows 5th Embodiment which combined V-shaped notch with the cut line schematically, FIG. 9 is 6th which combined V-shaped notch with the cut line formed in the packaging bag concerning this invention. The principal part top view which shows embodiment schematically, FIG. 10: is a principal part top view which shows 7th Embodiment which combined V-shaped notch with the cut line formed in the packaging bag concerning this invention, and figure 11 is an unsealed view of the packaging bag shown in FIG. 3 with one side edge thermal bonding part left, 1 in the figure is the packaging bag, 2 is the edge thermal bonding part, and 2 ′ is the left / right edge. Edge thermal bonding part, 2 ″ is upper / lower edge thermal bonding part, 3 is a first cut line, 3 ′ is a second cut line, 10 is a laminate, 11 is an outer layer, 12 is an intermediate layer, 13 is an inner layer, 20 Is a synthetic resin bite, 21 is a convex male member, 22 is a concave female member, 30A is a first-first origin side converged cut line (a plurality of first cut lines / starting side 30B is a first-first end-side convergent cut line (first cut line / multiple cut lines on the end-point side), and 30C is a first-second start-side straight cut line (first 30D is a first-second end side straight cut line (first cut line / one-end side cut line), and 30E and 30G are first- 3 Upper cut line (first cut line / multiple cut lines on the central side / cut line bulging to the upper end side), 30F and 30H are first to lower 3rd cut line (first cut line / center side) A plurality of cut lines / cut lines bulging to the lower end side), 31A is a 2-1 start point side convergent cut line (second cut line / start point side cut lines), and 31B is a 2-1 End point side convergent cut line (second cut line / multiple cut lines on end point side), 31C is 2-2 start point side straight cut line (second cut line / one central cut line) Part of , 31D is the 2-2 end-side straight cut line (second cut line / part of one central cut line), and 31E is the second-3 center-side straight cut line (second cut line). N1 is an I notch (I notch), N2 is a V-shaped notch (tear initiation region 1), N3 is a U-shaped notch (tear initiation region) 2), α indicates a cut line forming region, and β indicates a bite forming region.

  FIG. 1 is a plan view schematically showing a positional relationship between a cut line having an I notch or a tear start region of a packaging bag according to the present invention and a bite, and FIG. 2 schematically shows a cross section taken along line XX of FIG. The packaging bag 1 is formed by superposing the inner layers 13 of a rectangular laminate 10 in which an outer layer 11, an intermediate layer 12 made of an aluminum foil, and an inner layer 13 made of a heat-adhesive resin layer are laminated, and This is a four-side-seal type packaging bag in which the edge is thermally bonded and sealed by the edge thermal bonding portion 2. In addition, in this specification, in edge thermal bonding part 2, a set of edge thermal bonding part 2 which is located in the edge part of the left-right direction in FIG. The left and right edge thermal bonding portions 2 'are referred to as the upper and lower edges of the pair of edge thermal bonding portions 2 that are located at the vertical ends in FIG. The packaging bag 1 is referred to as a heat-bonding portion 2 ″. The packaging bag 1 is formed on one outer layer and the other outer layer of the rectangular laminated body 10 constituting the packaging bag 1 in different positions in the plan view of the packaging bag 1. When the first cut line 3 and the second cut line 3 ′ are formed, the cut line forming region α further provided with an I notch or a tear start region and the lower end side (lower edge heat) A joint composed of a convex male member 21 and a concave female member 22 meshing with each other on the adhesive part 2 ″ side) It is comprised from the articulation tool formation area | region (beta) in which the synthetic resin articulation tool 20 is provided.

  Next, embodiments of the cut lines (the first cut line 3 and the second cut line 3 ') formed in the packaging bag 1 and the I notch will be specifically described in detail. FIG. 3 is a plan view of an essential part seen from the front side schematically illustrating a first embodiment in which an I notch is combined with a cut line formed in a packaging bag according to the present invention, and FIG. The figure which shows a Y line cross section schematically, (b) is a figure which shows the ZZ line cross section of FIG. 3 schematically.

  In FIG. 3, the I notch N1 is provided in each of the left and right edge thermal bonding portions 2 ′, and the left and right I notches N1 are one through cuts that penetrate the left and right edge thermal bonding portions 2 ′. Yes, the left (starting side) I notch N1 is provided at a position that does not reach the inner edge of the left edge thermal bonding portion 2 ′ from the outer edge of the left edge thermal bonding portion 2 ′, and the right side (end point side). The I notch N1 is provided at a position that does not reach the inner edge of the right edge thermal bonding portion 2 ′ from the outer edge of the right edge thermal bonding portion 2 ′. The phase (position) in the vertical direction parallel to the right edge thermal bonding portion 2 ′ (for example, the distance from the outer edge of the upper edge thermal bonding portion 2 ″) is the same, and since it is a through cut, thermal bonding is performed. One side (front side) and the other side (rear side) of the laminated body 10 constituting the packaging bag 1 that has been made are penetrated together. The I notch N1 is a kind of cut, that is, a notch, and forms a certain region like a scar group formed by forming a number of V-shaped, U-shaped, tortoise-shaped notches, and a number of minute punching holes, which will be described later. It is interpreted as conceptually distinct from the tear initiation region.

  In FIG. 3, the score line indicates the first score line 3 formed on one (front side) outer layer 11 of the laminate 10 constituting the packaging bag 1 and the other (back) of the laminate 10 constituting the packaging bag 1. And a second cut line 3 ′ formed in the outer layer 11 of the side).

  Furthermore, the 1st cut line 3 formed in the outer layer 11 of one side (near side) of the laminated body 10 which comprises the packaging bag 1 retreated inside (right side) rather than the outer edge of the left edge thermal bonding part 2 '. The left and right ends of the left and right edges are advanced from the two locations and the two locations retracted inward (left side) from the outer edge of the right edge thermal bonding portion 2 'toward the inner edge of the left and right edge thermal bonding portions 2'. A vertical phase (position) that converges at a position that does not reach the inner edge of the edge thermal bonding portion 2 ′ and is parallel to the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 (for example, an upper edge thermal bonding portion Two first-first origin-side convergent cut lines 30A, two first-first end-side convergent cut lines 30B having the same distance from the outer edge of 2 ″, and the first-first origin-side converged lines Left and right edges from the convergent point of the converging cut line 30A and the converging point of the 1-1st end-side converging cut line 30B, respectively The vertical direction which proceeds in the left-right direction orthogonal to the bonding part 2 ′ and reaches the inner side from the inner edge of the left / right edge thermal bonding part 2 ′ and is parallel to the left / right edge thermal bonding part 2 ′ of the packaging bag 1 1st 1-2 start point side straight cut line 30C and 1 1-2 end point side straight line having the same phase (position) (for example, distance from the outer edge of the thermal bonding part 2 ″ at the upper edge) The upper end of the first to third bulges to the upper end side connecting the end points of the cut line 30D and each of the first and second start-side straight cut lines 30C and the first and second end-side straight cut lines 30D. It comprises a side cut line 30E and a first to third lower end side cut line 30F that swells toward the lower end side.

  Further, the second cut line 3 ′ formed in the outer layer 11 on the other side (back side) of the laminated body 10 constituting the packaging bag 1 recedes inward (right side) from the outer edge of the left edge thermal bonding portion 2 ′. The left and right sides proceed in the direction toward the inner edge of the left and right edge thermal bonding portion 2 'from the two positions and the two positions retracted inward (left side) from the outer edge of the right edge thermal bonding portion 2'. A vertical phase (position) parallel to the left and right edge thermal bonding portions 2 'of the packaging bag 1 that converges at a position that does not reach the inner edge of the edge thermal bonding portion 2' (for example, upper edge thermal bonding) Two 2-1 start-point-side convergent cut lines 31A having the same distance from the outer edge of the portion 2 ″, two 2-1 end-point-side convergent cut lines 31B, and the 2-1 start-point side Left and right edges from the converged point of the convergent cut line 31A and the converged point of the 2-1 end side converged cut line 31B, respectively Proceeding in the left-right direction perpendicular to the bonding part 2 ', the phase (position) and the length are extended in the same manner as the first and second start point side straight cut lines 30C and the first and second end point side straight cut lines 30D. The 2-2 starting point side straight cut line 31C, the 2-2 end point side straight cut line 31D, and the 2-2 starting point side straight cut line 31C and the 2-2 end point side straight cut line 31D. It is comprised from the 2-3 center side straight cut line 31E which connects each termination | terminus with a straight line.

  Regarding various cut lines, the various cut lines constituting the first cut line 3 are marked with “first”, and “1-1” in order from the outer edge of the left and right edge thermal bonding part 2 ′. A word added with branch numbers “1-2” and “1-3” is attached, and the various cut lines constituting the second cut line 3 ′ are given the word “second”. The left and right side edges are attached with words added with branch numbers “2-1” and “2-2” in order from the outer edge of the thermal bonding portion 2 ′. The cut line is closer to the outer edge of the edge thermal bonding portion 2 ′, and the larger the branch number is, the closer to the center is from the outer edge of the left and right edge thermal bonding portion 2 ′.

  Further, the 2-2 start point side straight cut line 31C, the 2-2 end point side straight cut line 31D, and the 2-3 central side straight cut line 31E are aligned in the same straight line, However, it is not necessary to classify the first and second start side straight cut lines 30C, and a portion (part) that coincides with the first and second start side straight cut lines 31C is defined as a second and second start side straight cut lines 31C. The portion (part) that coincides with the end-point-side straight cut line 30D on the front and back is defined as the 2-2 end-point-side straight cut line 31D, and the remaining portion (part) is defined as the second-third central straight-cut. This is defined as a line of sight 31E.

  Further, regarding the relative positional relationship between the left (starting side) I notch N1 and the first cut line 3, the two first 1-1 constituting the first cut line 3 in the plan view of the laminate 10 are shown. The starting point side convergent cut line (outer cut line; hereinafter the same) 30A converges as the first point, of the two first 1-1 starting side converged cut lines 30A on the outermost side. The starting point of the score line is the second point, and a virtual line extending from the second point to the outside (left side) in the left-right direction perpendicular to the left / right edge thermal bonding portion 2 ′ is the left edge thermal bonding portion 2 ′. The third point is the point that intersects the outer end, and the fourth point is the starting point of the lowermost cut line located on the lowermost side of the two first-first starting-side convergent cut lines 30A. The imaginary line extending from the point to the outside (left side) in the left-right direction perpendicular to the left and right edge thermal bonding part 2 'is outside the left edge thermal bonding part 2'. When the point that intersects with the fifth point is within the substantially home base region surrounded by the first point, the second point, the third point, the fourth point, and the fifth point, and further the left edge heat The left (starting side) I notch N1 is provided in the bonding part 2 ′, and the left and right edge heats of the inner edge side of the left edge thermal bonding part 2 ′ of the left (starting side) I notch An extended imaginary line parallel to the left and right direction perpendicular to the adhesive part 2 'is provided at a position where it intersects with the above-mentioned "left-right inverted square-shaped" cut line connecting the second point, the first point and the fourth point. Yes.

  In addition, regarding the relative positional relationship between the I notch N <b> 1 on the right side (end point side) and the first cut line 3, the two first 1-1 constituting the first cut line 3 in the plan view of the stacked body 10. The first point is the point where the end point side convergent cut line 30B converges, and the second point is the starting point of the outermost cut line located on the outermost side of the two 1-1 end point side convergent cut lines 30B. The third point is that the imaginary line extending from the second point to the outside (right side) in the left-right direction orthogonal to the left and right edge thermal bonding part 2 ′ intersects the outer edge of the right edge thermal bonding part 2 ′. A starting point of the lowermost cut line located on the lower side of the two first-first end-side convergent cut lines 30B is a fourth point, and the left and right edges from the fourth point The fifth point is that the imaginary line extending outward (right side) in the left-right direction perpendicular to the thermal bonding part 2 ′ intersects the outer end of the right edge thermal bonding part 2 ′. In this case, within the substantially home-base region surrounded by the first point, the second point, the third point, the fourth point, and the fifth point, and further on the right side ( Left and right edge thermal bonding portions 2 'perpendicular to the inner edge side of the right edge thermal bonding portion 2' of the right edge (end side) I notch N1 are provided. An extended imaginary line parallel to the direction is provided at a position where it intersects with the above-mentioned “cross-shaped” cut line connecting the second point, the first point, and the fourth point.

  The packaging bag 1 configured as described above has an outer edge of the left edge thermal bonding portion 2 ′ intersected by the left (starting side) I notch N 1, for example, a region from the left side to the upper end side in FIG. When tearing forward from the I notch N1 on the left side (starting side), the stack on the near side and the stack on the far side of the two stacks constituting the packaging bag 1 are on the left side (starting side). Tearing is started from the I notch N1, and it is integrally torn from the tip of the left (starting side) I notch N1 toward the inside (right side), and is inside the tip of the left (starting side) I notch N1. Crossing with one of the two first 1-1 starting side converging cut lines 30A adjacent to or a converging point, and from here on, a tearing line of the two first 1-1 starting side converging cutting lines 30A Crossed with the tear line of the crossed cut line and the 2nd 2-1 origin side converging cut line 31A. The first and second starting-side straight cut lines 30C and the 2-2 starting-side straight cut line 31C follow the initial convergent point by tearing together so as to coincide with the line of sight. Along the first and third lower end side cut lines 30F, which are torn integrally and linearly along the lower end side, and the first upper end side cut line 30E, which swells to the upper end side. As a result of tearing, the first cut line 3 extends along the first-third lower end-side cut line 30F from the first-second origin-side straight cut line 30C, and at the second cut line 3 ′. Are torn apart from the 2-2 origin side straight cut line 31C along the 2-3 center side straight cut line 31E, respectively, and each tear opening line is on the 1-2 end side Straight cut line 30D and 2-2 end point straight cut line 3 In the first cut line 3, the first-3 lower end cut line 30F is along the 1-2 end point straight cut line 30D, and in the second cut line 3 ′, the first cut line 3F. 2-2 The end point side straight cut line 31D is torn linearly integrally to reach the end point side converged point, and any of the two first 1-1 end point side converged cut lines 30B following this The first and second end-side converged cut lines 30B and the second and second end-side converged cut lines 30B and the second and second end-side converged cut lines 31B are integrally torn. After reaching the starting point along one of the cut lines 31B, if the tear is further advanced, the tear line reaches the outer edge of the right edge thermal bonding portion 2 'on the right side (end point side) in FIG. Is done. As shown in FIG. 11, the tear opening line is composed of a smooth curve and a straight line, and the opening can be made beautiful. Moreover, since the tear opening line formed by the 1-3 lower end side cut line 30F and the 2-3 central side straight cut line 31E creates a step, it easily grips one side and the other side of the laminate 10. Can be opened.

  Although not shown or described in detail, when the packaging bag 1 is opened in FIG. 3, the region on the upper end side from the left side in FIG. As a result of tearing to the far side, the tear opening line reaches the branch point of the first to third lower end side cut line 30F that swells to the lower end side and the first to third upper end side cut line 30E that swells to the upper end side. Other than being torn along the first to third upper end side cut line 30E from the first to second starting side straight cut line 30C, it is torn and opened in the same manner as in the case of tearing to the near side.

  FIG. 5 is a plan view of an essential part seen from the front side schematically showing a second embodiment in which an I notch is combined with a cut line formed in the packaging bag according to the present invention. In FIG. Although the 1st-3 upper end side cut line 30E and the 1st-3 lower end side cut line 30F of the cut line 3 are shown in an arc shape, the upper end has a substantially U shape instead of the arc shape. The first to third upper end side cut lines 30G that bulge to the side and the first to third lower end side cut lines 30H that bulge to the lower end side are the same as in FIG. In the case of the second embodiment, the first cut line 1 is substantially U-shaped with respect to the first-second start point side straight cut line 30C or the first-second end point side straight cut line 30D of the first cut line 3. It is desirable that the angle θ (only one place is described) formed by the 3 upper end side cut line 30G or the 1-3 lower end side cut line 30H is 160 to 175 degrees.

  FIG. 6 is a plan view of an essential part seen from the front side schematically illustrating a third embodiment in which a V-shaped notch is combined with a score line formed in the packaging bag according to the present invention. The left and right I notches N1 are replaced with left and right V-shaped notches N2.

  In FIG. 6, V-shaped notches N2 are provided in the left and right edge thermal bonding portions 2 ′, respectively, and the left and right V-shaped notches N2 penetrate the left and right edge thermal bonding portions 2 ′. This is a missing part in which a triangular region surrounded by the V-shaped through cut and the outer edge of the left and right edge thermal bonding part 2 ′ is removed, and the left (starting side) V-shaped notch N2 is: The V-shaped notch N2 on the right side (end point side) is provided at a position that does not reach the inner edge of the left edge thermal bond portion 2 ′ from the outer edge of the left edge thermal bond portion 2 ′. The left and right V-shaped cutouts N2 are provided at positions that do not reach the inner edge of the right edge thermal bonding section 2 'from the outer edge of the bonding section 2'. The phase (position) in the vertical direction parallel to 2 ′ (for example, the distance from the outer edge of the upper edge thermal bonding part 2 ″) is the same, and is a missing part. Further, one (near side) and the other (back side) of the laminated body 10 constituting the thermally bonded packaging bag 1 are collectively removed and removed, and the V-shaped notch N2 is a kind of missing part. Is formed by removing a certain region such as notches such as V-shape, U-shape, turtle shell shape, etc., which will be described later, and a plurality of minute punched holes, which will be described later, These are collectively referred to as a tear initiation region, including a scar group in which a small diameter needle or the like is inserted to form a large number of through holes and a scar group in which a short blade or the like is inserted to form a large number of cuts.

  Furthermore, regarding the relative positional relationship between the V-shaped cutout N2 on the left side (starting side) and the first cut line 3, the two first cut lines 3 constituting the first cut line 3 in the plan view of the stacked body 10 are used. The point at which the 1-1 starting side convergent cut line 30A converges is the first point, and the starting point of the uppermost cut line located on the outermost side among the two first 1-1 starting side converged cut lines 30A is the first point. Two points, and an imaginary line extending from the second point to the outside (left side) in the left-right direction orthogonal to the left / right edge thermal bonding part 2 ′ intersects the outer edge of the left edge thermal bonding part 2 ′. Is the third point, and the starting point of the lowest cut line located on the lowermost side of the two first 1-1 starting side convergent cut lines 30A is the fourth point, and the left and right sides from the fourth point The fifth point is that the imaginary line extending outward (left side) in the left-right direction orthogonal to the edge thermal bonding part 2 ′ intersects the outer end of the left edge thermal bonding part 2 ′. In the substantially home base region surrounded by the first point, the second point, the third point, the fourth point, and the fifth point, and further on the left side edge in the thermal bonding portion 2 ′. A V-shaped notch N2 on the (starting side) is provided, and the left and right edge thermal bonding of the tip on the inner edge side of the left edge thermal bonding portion 2 'of the left (starting side) V-shaped notch N2 is provided. An extended imaginary line parallel to the left-right direction orthogonal to the portion 2 ′ is provided at a position where it intersects with the above-mentioned “left-right inverted square-shaped” cut line connecting the second point, the first point, and the fourth point. .

  Further, regarding the relative positional relationship between the V-shaped notch N2 on the right side (end point side) and the first cut line 3, the two cut lines constituting the first cut line 3 in the plan view of the laminate 10 are described. The point where the 1-1 end point side convergent cut line 30B converges is the first point, and the starting point of the uppermost cut line located on the outermost side of the two 1-1 end point side converged cut lines 30B is the starting point. As a second point, an imaginary line extending from the second point to the outside (right side) in the left-right direction orthogonal to the left / right edge thermal bonding portion 2 ′ intersects the outer end of the right edge thermal bonding portion 2 ′. The point is the third point, and the starting point of the lowermost cut line located on the lowermost side of the two first-first end-side convergent cut lines 30B is the fourth point. The point that the imaginary line extending outward (right side) in the left-right direction orthogonal to the right edge thermal bonding part 2 ′ intersects with the outer edge of the right edge thermal bonding part 2 ′. In the case of a point, it is in a substantially home-base region surrounded by the first point, the second point, the third point, the fourth point, and the fifth point, and further in the right edge thermal bonding part 2 ′. The right (end point side) V-shaped cutout N2 is provided, and the right and end V-shaped cutouts N2 on the right end edge of the thermal bonding portion 2 ′ on the right end edge on the inner end side of the left and right end An extended imaginary line parallel to the right and left direction orthogonal to the edge thermal bonding portion 2 'is provided at a position where it intersects with the above-mentioned "character shape" cut line connecting the second point, the first point and the fourth point. Yes.

  The packaging bag 1 configured as described above has an outer edge of the left edge thermal bonding portion 2 'intersected by the left (starting side) V-shaped cutout N2, for example, a region from the left side to the upper end side in FIG. When you pick it with your fingers and tear it to the near side from the V-shaped cutout N2 on the left side (starting side), among the two laminates constituting the packaging bag 1, the laminate on the near side and the laminate on the far side are: Tearing is started from the V-shaped notch N2 on the left side (starting side), and the tear is integrally torn from the tip of the V-shaped notch N2 on the left side (starting side) toward the inside (right side). Crossing either one of the two first 1-1 starting convergent cut lines 30A adjacent to the inner side (right side) or the convergent point with respect to the tip of the V-shaped notch N2 on the side) Of the first 1-1 origin side convergent cut lines 30A, a cut line intersecting with the tear line and two 2nd 1-1 origin side convergent cut lines 3 A torn line is integrally formed so that the tear line and the intersecting cut line coincide with each other to reach the convergence point on the starting point side, and the first and second starting side straight cutting lines 30C and 2-2 following this are converged. 1st-3 lower end side cut line 30F in which the tear opening line bulges to the lower end side and 1st-3 upper end side cut swells to the upper end side, which are torn linearly along the starting side linear cut line 31C. As a result of reaching the branch point of the line of sight 30E and tearing forward, the first cut line 3 extends from the first-second start side linear cut line 30C to the first-third lower end side cut line 30F. Further, the second cut line 3 ′ is torn apart from the 2-2 start point side straight cut line 31C along the second-3 center side straight cut line 31E, and the respective tear lines. The unsealing line is the first to second end side straight cut line 30D and The 2-2 end-point-side straight cut line 31D is reached. In the first cut line 3, the first-third lower-end-side cut line 30F is along the first-second end-point-side straight cut line 30D. At the second cut line 3 ', the two end pieces 1-1 that follow the 2-2 end point side straight cut line 31D are torn linearly and integrally to reach the end point side convergence point. The first and second end-side convergent cut lines 30B are integrally torn so that either one of the end-point-side convergent cut lines 30B and one of the two second-first end-side converged cut lines 31B coincide with each other. After reaching the starting point along any of the 2-1 end point side convergent cut lines 31B, if the tearing is further advanced, the tear line is bonded to the right edge (the end point side) of the right edge on FIG. It reaches the outer edge of the part 2 'or reaches the V-shaped notch N2 on the right side (end point side) and is opened 3 is substantially the same as that of the first embodiment in FIG. 3, but the tear line is provided on the right side (end point side) provided on the outer edge of the right end edge thermal bonding portion 2 ′ on the right side (end point side) in FIG. 6. The probability of reaching the V-shaped notch N2 is naturally higher than the probability of reaching the I notch N1 in FIG. 3 in consideration of the width of the notch opening.

  Although not shown or described in detail, when the packaging bag 1 is opened in FIG. 6, the region on the upper end side from the left side in FIG. 6 is grasped with fingers and the V-shaped notch N2 on the left side (starting side). When tearing to the back side, the tear opening line reaches the branch point of the first to third lower end side cut line 30F that swells to the lower end side and the first to third upper end side cut line 30E that swells to the upper end side, and tears to the back side. As a result of the above, it is torn along the first to third upper end side cut line 30E from the first to second starting side straight cut line 30C, and is torn and opened in the same manner as in the case of tearing to the near side. is there.

  FIG. 7 is a plan view of an essential part seen from the front side schematically illustrating a fourth embodiment in which a U-shaped cutout is combined with a score line formed in the packaging bag according to the present invention. The left and right I notches N1 are replaced with left and right U-shaped notches N3.

  In FIG. 7, U-shaped notches N3 are provided in the left and right edge thermal bonding portions 2 ′, and the left and right U-shaped notches N3 penetrate the left and right edge thermal bonding portions 2 ′. This is a missing part from which a substantially horizontally long semicircular shape (a combination of a square and a semicircle) surrounded by a U-shaped through cut and the outer edge of the left and right edge thermal bonding part 2 'is removed. The (starting side) U-shaped notch N3 is provided at a position that does not reach the inner edge of the left edge thermal bonding portion 2 ′ from the outer edge of the left edge thermal bonding portion 2 ′, and is located on the right side (end point side). The U-shaped notch N3 is provided at a position that does not reach the inner edge of the right edge thermal bonding portion 2 ′ from the outer edge of the right edge thermal bonding portion 2 ′. , Phase (position) in the vertical direction parallel to the left and right edge thermal bonding part 2 'of the packaging bag 1 (for example, distance from the outer edge of the upper edge thermal bonding part 2 " Since this is a missing portion, one (front side) and the other (back side) of the laminated body 10 constituting the thermally bonded packaging bag 1 are removed and removed together. Relative positional relationship between the U-shaped cutout N3 on the left side (starting side) and the first cut line 3, and the relative position between the U-shaped cutout N3 on the right side (end point side) and the first cut line 3 The relationship is the same as that of the third embodiment provided with the V-shaped notch N2 of FIG.

  The V-shaped notch N2 in FIG. 6 and the U-shaped notch N3 in FIG. 7 are combined with the score line to make the opening means, and even the visually impaired user identifies the opening start location In terms of what can be done, the opening can be made easier visually.

  Furthermore, the front-end | tip part (V-shaped bending point, U-shaped inflection point) which faced the inner side of V-shaped notch N2 and U-shaped notch N3 is said 1-1 start point side convergent cut line If tearing is started from a U-shaped notch by approaching the convergence point of 30A (or the above-mentioned 2-2 starting-point-side convergent cut line 31A), the tear opening line will move inside the U-shaped notch. Since it is possible to increase the probability of reaching the convergence point of the 1-1 starting point side convergent cut line 30A (or the 2-2 starting point side convergent cut line 31A) from the front end portion that faces. Compared to crossing with the first-first origin-side convergent score line 30A (or the second-second origin-side convergent score line 31A), and proceeding along this, finally reaching the convergence point Opening can be made functionally easier.

  6 shows a V-shaped notch, and FIG. 7 shows a U-shaped notch. However, as means for making the opening easier both visually and functionally, these may be used. It is not limited, and it may be V-shaped, U-shaped, turtle-shaped, or the like, and the same level of function can be achieved by providing a group of scars with a number of minute punched holes. These are a kind of missing part, and a desired U-shaped blade, a single V-shaped blade, and many, for the left and right edge thermal bonding portions 2 'of the heat-bonded packaging bag 1. This is formed by removing a partial region (region surrounded by the cut and the outer edge, region surrounded by the circular cut) by vacuum suction or the like while forming a cut by pressing a small circular cutter. . Furthermore, in addition to the cutout obtained by cutting out a part of the laminated body 10 constituting the packaging bag 1 as described above, a group of scars, short blades, etc., in which a small number of needles are inserted to form a large number of through holes are inserted. It may be a scar group in which a large number of cuts are formed. Scratches of this specification consist of a large number of through-holes by pressing a small-diameter needle assembly or a short-width blade assembly against the heat-bonded portion 2 'on the left and right edges of the heat-bonded packaging bag 1. For example, in the case of a through hole, the surface on the side where the needle is pressed is provided with a kind of mortar-shaped dent and a hole due to the tearing of the bottom along the shape of the tip of the needle. The surface on the side from which the needle protrudes has a kind of barnacle-shaped convex part along the shape of the tip of the needle and a hole formed by breaking the top part. This hole was made by breaking through and partially removed. This is common to the I notch (one long cut). However, a large number of through-holes and a large number of cuts are gathered to form a certain region that is easy to tear. In this respect, many V-shaped, U-shaped, turtle shell-shaped notches, and many fine punched holes are formed. It is the same as the scar group formed, and these are generically defined as the tear start region. The left and right ends of the heat-bonded packaging bag 1 are used for a scar group in which a small diameter needle or the like is inserted to form a large number of through holes, or a scar group in which a short blade or the like is inserted to form a large number of cuts. It is not necessary to remove a part of the edge thermal bonding part 2 ′, and it is sufficient to reduce the strength to such an extent that it is easy to tear a part of the left and right edge thermal bonding part 2 ′ of the thermally bonded packaging bag 1. Further, it may be a scar group formed without penetrating the surface (one or both) of the laminate 10.

  However, in any case, the relative positional relationship between the tear start area (V-shaped, U-shaped, tortoise-shaped notch, scar group) on the left side (starting side) and the first cut line 3, the right side Regarding the relative positional relationship between the tear starting region (V-shaped, U-shaped, tortoise-shaped notch, scar group) and the first cut line 3 on the end point side, see FIG. This is the same as the third embodiment with N2 and the fourth embodiment with the U-shaped notch N3 in FIG.

  That is, the first point is the point where the two first-first-start-point-side convergent cut lines 30A constituting the first cut-line 3 in the planar view of the laminate 10 are the first points, and the two first-first start points The starting point of the uppermost cut line located on the outermost side of the side-converged cut line 30A is the second point, and the outer side in the left-right direction perpendicular to the left and right edge thermal bonding portions 2 ′ from the second point (left side) ) Is the third point at the point where the imaginary line extending to the outer edge of the left edge thermal bonding portion 2 ′ intersects, and the lowest one of the two first 1-1 starting-side converged cut lines 30A. The starting point of the lower cut line is the fourth point, and the imaginary line extending from the fourth point to the outside (left side) in the left-right direction perpendicular to the left / right edge thermal bond 2 ′ is the left edge thermal bond When the point that intersects the outer edge of 2 'is the fifth point, the approximate ho surrounded by these first point, second point, third point, fourth point, and fifth point In the base-like region, the left-side edge thermal bonding portion 2 'is further provided with a left-side (starting side) tear initiation region (V-shaped, U-shaped, tortoise-shaped notch, scar group). Left and right edge heat at the tip of the inner edge side of the left edge thermal bonding part 2 ′ of the tear start area (V-shaped, U-shaped, tortoise-shaped cutout, scar group) on the left side (starting side) An extended imaginary line parallel to the left and right direction perpendicular to the adhesive part 2 'is provided at a position where it intersects with the above-mentioned "left-right inverted square-shaped" cut line connecting the second point, the first point and the fourth point. Yes.

  Moreover, the point which the two 1st-1 end point side converging-like cut lines 30B which comprise the 1st cut line 3 in the planar view state of the laminated body 10 becomes a 1st point, and is the 2nd 1-1 end point. The starting point of the uppermost cut line located on the outermost side of the side-converged cut line 30B is the second point, and the outer side in the left-right direction perpendicular to the left and right edge thermal bonding portions 2 ′ from the second point (right side) ), The third point is the point where the imaginary line extending to the outer edge of the right edge thermal bonding portion 2 'intersects, and the lowest one of the two first 1-1 end side converging cut lines 30B. The starting point of the lower cut line is the fourth point, and the imaginary line extending from the fourth point to the outside (right side) in the left-right direction perpendicular to the left / right edge thermal bonding part 2 ′ is the right edge thermal bonding part When the point that intersects the outer edge of 2 'is the fifth point, the approximate home base surrounded by the first point, the second point, the third point, the fourth point, and the fifth point. A right side (end point side) tear initiation region (V-shaped, U-shaped, tortoise-shaped notch, scar group, etc.) is provided in the right edge thermal bonding portion 2 ′. Left and right side edge heat at the inner edge side of the right edge thermal bonding part 2 'of the right side (end point side) tear initiation region (V-shaped, U-shaped, tortoise-shaped notches, scars, etc.) An extended imaginary line parallel to the left-right direction orthogonal to the bonding portion 2 'is provided at a position where it intersects with the above-mentioned "cross-shaped" cut line connecting the second point, the first point, and the fourth point. The tip portion facing the inside of the tear start area (V-shaped, U-shaped, tortoiseshell-shaped notch, scar group) is the first-first origin-side converged cut line 30A (or the first It is preferable to form it so as to be close to the convergence point of the 2-2 starting point side convergent cut line 31A).

  Further, in FIG. 3, the I notch N1, the V-shaped notch N2 in FIG. 6, the U-shaped notch N3 in FIG. 7, the start side (left side in the figure) and the end side (in the figure) However, it is desirable to provide it on both sides if left-handed users are considered, but it may be provided only on the starting side (left side in the figure) or notch on both sides. There is no problem even if the shape is different between the starting point side and the ending point side (for example, V-shaped notch N2 is set on the starting point side but I notch N1 is set on the ending point side). The same applies to the tear start region.

  FIG. 8 is a plan view of an essential part seen from the front side schematically illustrating a fifth embodiment in which a V-shaped notch is combined with a score line formed in a packaging bag according to the present invention. Compared to the first embodiment, the two first-first start-side convergent cut lines 30A and the two first-first end-point converged cut lines 30B constituting the both sides of the first cut line 3 The positions of the two 2-1 start-point-side convergent cut lines 31A and the two 2-1 end-point-side convergent cut lines 31B that constitute both sides of the second cut line 3 'are shifted inward. The first cut line 3-the first start point side straight cut line 30C, the first 1-2 end point side straight cut line 30D, and the second cut line 3 '1 Except for the point that the first 2-2 start-point-side straight cut line 31C and one 2-2 end-point-side straight cut line 31D are shortened, the first in FIG. Same as the embodiment, the relative positional relationship between the V-shaped cutout N2 on the left side (starting side) and the first cut line 3, the V-shaped cutout N2 on the right side (end point side) and the first cut line The relative positional relationship with 3 is the same.

  As shown in FIG. 8, the cut line is formed between the first cut line 3 formed on the outer layer 11 on one side (front side) of the laminated body 10 constituting the packaging bag 1 and the laminated body 10 constituting the packaging bag 1. And a second cut line 3 ′ formed in the other (back side) outer layer 11.

  Furthermore, the 1st cut line 3 formed in the outer layer 11 of one side (near side) of the laminated body 10 which comprises the packaging bag 1 retreated inside (right side) rather than the outer edge of the left edge thermal bonding part 2 '. The left and right ends of the left and right edges are advanced from the two locations and the two locations retracted inward (left side) from the outer edge of the right edge thermal bonding portion 2 'toward the inner edge of the left and right edge thermal bonding portions 2'. A vertical phase (position) that converges at a position reaching the inner edge from the inner edge of the edge thermal bonding portion 2 ′ and parallel to the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 (for example, upper edge thermal bonding) Two first-first origin-side convergent cut lines 30A having the same distance from the outer edge of the portion 2 ″, two first-first end-side convergent cut lines 30B, and the first-first origin side Left and right ends from the converged point of the convergent cut line 30A and the converged point of the 1-1st end point converged cut line 30B, respectively. Proceeding in the left-right direction orthogonal to the thermal bonding part 2 ′, it reaches further inside than the inner edge of the left and right edge thermal bonding part 2 ′ and is parallel to the left and right edge thermal bonding part 2 ′ of the packaging bag 1. One first-second start point side straight cut line 30C and one first-1-2 end point side having the same vertical phase (position) (for example, distance from the outer edge of the upper edge thermal bonding part 2 ″) The first cut-out bulges to the upper end side connecting the end points of the straight cut line 30D and one of the first and second start-side straight cut lines 30C and one of the first and second end-side straight cut lines 30D. 3 upper end side cut line 30E and a 1-3 lower end side cut line 30F bulging to the lower end side.

  Further, the second cut line 3 ′ formed in the outer layer 11 on the other side (back side) of the laminated body 10 constituting the packaging bag 1 recedes inward (right side) from the outer edge of the left edge thermal bonding portion 2 ′. The left and right sides proceed in the direction toward the inner edge of the left and right edge thermal bonding portion 2 'from the two positions and the two positions retracted inward (left side) from the outer edge of the right edge thermal bonding portion 2'. A vertical phase (position) that converges at a position reaching the inner edge of the inner edge of the edge thermal bonding portion 2 ′ and parallel to the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 (for example, upper edge heat Two 2-1 starting point side converging cut lines 31A having the same distance from the outer edge of the bonding portion 2 ″, two 2-1 end point converging cutting lines 31B, and the 2-1 starting point Left and right ends from the converged point of the side convergent cut line 31A and the converged point of the 2-1 end point side converged cut line 31B, respectively. Proceeding in the left-right direction perpendicular to the thermal bonding part 2 ′, the phase (position) and length are the same as those of the first and second start-point-side straight cut lines 30C and first and second end-point-side straight cut lines 30D. The extended 2-2 start point side straight cut line 31C, the 2-2 end point side straight cut line 31D, and the 2-2 start point side straight cut line 31C and the 2-2 end point side straight cut line 31D. Are formed from a second to third center-side straight cut line 31E that connects the ends of each of them with a straight line.

  In the fifth embodiment of FIG. 8, the cut lines formed in the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 are two first-first starting points as compared to the first embodiment of FIG. 3. Side convergent score line 30A, two first-first end-side convergent score lines 30B, two second-first origin-side convergent score lines 31A, two second-first-end-side convergent score lines A part of 31B that has a short length and a cut line extending in the left-right direction, which is a configuration in which bending and aluminum cracks are likely to occur at the position where the cut line is formed. A straight cut line 30C, one first-1-2 end-point-side straight cut line 30D, one 2-2 start-point-side straight cut line 31C, and one 2-2 end-point-side straight cut line 31D Compared with the first embodiment of FIG. 3, the position where the cut line is formed in that the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 are not present. , Bent and aluminum cracking of the upper side is more difficult to occur.

  FIG. 9 is a plan view of an essential part seen from the front side schematically illustrating a sixth embodiment in which a V-shaped notch is combined with a score line formed in a packaging bag according to the present invention. Compared with the fifth embodiment, the two first 1-1 starting side converging cut lines 30A and the two first 1-1 end side converging cutting lines 30B constituting the both side portions of the first cutting line 3; The positions of the two 2-1 start-point-side convergent cut lines 31A and the two 2-1 end-point-side convergent cut lines 31B that constitute both sides of the second cut line 3 'are shifted inward. The first cut line 3-the first start point side straight cut line 30C, the first 1-2 end point side straight cut line 30D, and the second cut line 3 '1 Except for the point that the first 2-2 start point-side straight cut line 31C and the one 2-2 end point-side straight cut line 31D are shortened, the fifth in FIG. Same as the embodiment, the relative positional relationship between the V-shaped cutout N2 on the left side (starting side) and the first cut line 3, the V-shaped cutout N2 on the right side (end point side) and the first cut line The relative positional relationship with 3 is the same.

  As shown in FIG. 9, the cut line is formed between the first cut line 3 formed on the outer layer 11 on one side (front side) of the laminated body 10 constituting the packaging bag 1 and the laminated body 10 constituting the packaging bag 1. And a second cut line 3 ′ formed in the other (back side) outer layer 11.

  Furthermore, the 1st cut line 3 formed in the outer layer 11 of one side (front side) of the laminated body 10 which comprises the packaging bag 1 is two places in the inner edge of left edge thermal bonding part 2 ', and right edge thermal bonding. From the two locations on the inner edge of the portion 2 ′, the left and right edge thermal adhesive portions 2 ′ are moved inwardly in the left and right directions to reach the inner side of the left and right edge thermal adhesive portions 2 ′. The vertical phase (position) (for example, the distance from the outer edge of the upper edge thermal bonding portion 2 ″) parallel to the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 is the same. Two first-first origin-side convergent score lines 30A, two first-first endpoint-side convergent score lines 30B, and the first-first origin-side convergent score lines 30A -1 Left and right edge from the converged point of the end-point-side convergent cut line 30B, respectively, left to the right edge thermal bonding part 2 ' The vertical phase (position) (for example, parallel to the left and right edge thermal bonding portion 2 'of the packaging bag 1 and traveling further inwardly to the inner edge of the left and right edge thermal bonding portion 2' , The first 1-2 start-side straight cut line 30C, the first 1-2 end-side straight cut line 30D, which have the same distance from the outer edge of the upper edge thermal bonding part 2 ″, and these 1 1st-3 upper end side cut line 30E and the lower end side of the first 1-2 start side straight cut line 30C and the 1st-2 end point side straight cut line 30D that swell to the upper end side connecting the respective ends thereof 1st-3 lower end side cut line 30F.

  Furthermore, the 2nd cut line 3 'formed in the outer layer 11 of the other (back side) of the laminated body 10 which comprises the packaging bag 1 is two places in the inner edge of left edge thermal bonding part 2', and right edge heat. Proceeding inward in the left-right direction perpendicular to the left and right edge thermal bonding portions 2 'from the two locations on the inner edge of the bonding portion 2', and moving inward from the inner edges of the left and right edge thermal bonding portions 2 ' The same vertical phase (position) (for example, the distance from the outer edge of the upper edge thermal bonding portion 2 ″) parallel to the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 Two 2-1 start-point-side convergent cut lines 31A, two 2-1 end-point-side convergent cut lines 31B, and a converged point of this 2-1 start-point-side convergent cut line 31A 2-1 Left and right end edges of the convergent cut line 31B on the end point side and the left side orthogonal to the right edge thermal bonding part 2 ' The 2-2 start point side straight line extending in the same direction and extending in the same phase (position) and length as the first and second start point side straight cut lines 30C and the 1-2 end point side straight cut line 30D. The cut line 31C, the 2-2 end point side straight cut line 31D, and the end points of the 2-2 start point side straight cut line 31C and the 2-2 end point side straight cut line 31D are connected in a straight line. It is comprised from the 2nd-3 center side linear cut line 31E.

  In the sixth embodiment of FIG. 9, compared to the fifth embodiment of FIG. 8, there is no score line formed in the left and right edge thermal bonding portions 2 ′ of the packaging bag 1 in that the Compared with the fifth embodiment, bending at the upper end side and aluminum cracking are less likely to occur at the position where the score line is formed.

  FIG. 10 is a plan view of an essential part seen from the front side schematically illustrating a seventh embodiment in which a V-shaped cutout is combined with a score line formed in the packaging bag according to the present invention. Compared with the sixth embodiment, the two first 1-1 starting side converging cut lines 30A and the two first 1-1 end side converging cutting lines 30B constituting the both side portions of the first cutting line 3; The positions of the two 2-1 start-point-side convergent cut lines 31A and the two 2-1 end-point-side convergent cut lines 31B that constitute both sides of the second cut line 3 'are shifted inward. The first cut line 3-the first start point side straight cut line 30C, the first 1-2 end point side straight cut line 30D, and the second cut line 3 '1 Except for the point that the first 2-2 start side straight cut line 31C and the one 2-2 end point side straight cut line 31D are shortened, the Same as the embodiment, the relative positional relationship between the V-shaped cutout N2 on the left side (starting side) and the first cut line 3, the V-shaped cutout N2 on the right side (end side) and the first cut line The relative positional relationship with 3 is the same.

  As shown in FIG. 10, the cut line is formed between the first cut line 3 formed in one outer layer 11 of the laminated body 10 constituting the packaging bag 1 and the laminated body 10 constituting the packaging bag 1. And a second cut line 3 ′ formed in the other (back side) outer layer 11.

  Furthermore, the 1st cut line 3 formed in the outer layer 11 of one side (near side) of the laminated body 10 which comprises the packaging bag 1 is the position which retreated to the right side (inside) from the inner edge of the left edge thermal bonding part 2 '. Inward and leftward and rightward from the two positions at the position retracted to the left (inner side) from the inner edge of the right edge thermal bonding portion 2 ′, proceed inward in the left-right direction perpendicular to the left and right edge thermal bonding portions 2 ′. The vertical and horizontal phases (positions) of the packaging bag 1 are converged at a position further inward than the inner edge of the left and right edge thermal bonding portion 2 'and parallel to the left and right edge thermal bonding portion 2' of the packaging bag 1. (E.g., two first-1-1 origin-side convergent cut lines 30A and two first-1-1 endpoint-side convergent cut lines 30B having the same (for example, distance from the outer edge of the upper edge thermal bonding portion 2 "), The converged point of the first-first origin-side convergent score line 30A and the first-first endpoint-side converged score line 3 From the converged point of B, the left and right side edge thermal bonding portions 2 'proceed in the left-right direction and reach further inside than the inner edge of the left and right side edge thermal bonding portions 2'. A single first-to-second origin side straight line having the same vertical phase (position) parallel to the left and right edge thermal bonding portions 2 ′ (for example, the distance from the outer edge of the upper edge thermal bonding portion 2 ″) Cut line 30C, one first-second-end-point-side straight cut line 30D, one first-second-start-point-side straight cut line 30C, and one first-second-end-point-side straight-cut line 30D 1st-3 upper end side cut line 30E which bulges to the upper end side connecting the respective ends of the first and third lower end side cut lines 30F which bulge to the lower end side.

  Furthermore, 2nd cut line 3 'formed in the outer layer 11 of the other side (back side) of the laminated body 10 which comprises the packaging bag 1 retreated to the right side (inner side) from the inner edge of the left edge thermal bonding part 2'. From the two locations at the position and the two locations at the position retracted to the left (inside) from the inner edge of the right edge thermal bonding portion 2 ′, respectively, inward in the left-right direction perpendicular to the left and right edge thermal bonding portions 2 ′. A vertical phase (position) that is converged at a position that has traveled and reached further inside than the inner edge of the left and right edge thermal bonding portion 2 ′ and parallel to the left and right edge thermal bonding portion 2 ′ of the packaging bag 1. ) (For example, two 2-1 starting point side converging cut lines 31A and two 2-1 end point converging cutting lines 31B having the same (distance from the outer edge of the upper edge thermal bonding part 2 ″) The converged point of the 2-1 starting point side convergent cut line 31A and the converged cut line 3 of the 2-1 end point side The first and second start side straight cut lines 30C and 1-2 end point side straight cut lines proceeding in the left and right directions perpendicular to the left and right side edge thermal bonding portions 2 'from the converged points of B, respectively. 2-2 starting point side straight cut line 31C, 2-2 end point side straight cut line 31D extending in the same phase (position) and length as 30D, and these 2-2 starting point side straight cut lines 31C and 2-2 end point side linear cut line 31D are each comprised from the 2nd-3 center side linear cut line 31E which connects each termination | terminus with a straight line.

  In the sixth embodiment of FIG. 9, if the formation position of the score line is shifted to the left and right, the score line may occur in the left and right edge thermal bonding portions 2 ′ of the packaging bag 1. In the seventh embodiment of the present invention, due to the presence of clearance portions from the left and right edge thermal bonding portions 2 ′ to the start and end points of the first cut line 3 and the start and end points of the second cut line 3 ′, Even if the blurring occurs, the cut line does not occur at the left and right edge thermal bonding portions 2 ′ of the packaging bag 1. In this respect, compared to the sixth embodiment of FIG. 9, the upper end side bend and aluminum cracks are less likely to occur at the position where the score line is formed.

  3, 6, 8, 9, and 10, the first to third upper end side cut lines 30 </ b> E and the first to third lower end side cut lines 30 </ b> F have an arc shape, and FIG. 7, the first to third upper end side cut lines 30G and the first to third lower end side cut lines 30H are illustrated in a substantially U-shape. The 1-3 lower end side cut line is not limited to this, and may be a substantially square shape, or the shapes of the 1-3 upper end side cut line and the 1-3 lower end side cut line. May be different.

  3, 6, 8, 9, and 10 connecting the terminal ends of the first-second start point-side linear cut line 30 </ b> C and the first-second end-point-side linear cut line 30 </ b> D. -3 upper end side cut line 30E and 1-3 lower end side cut line 30F, or each of the 1-3 upper end side cut line 30G and 1-3 lower end side cut line 30H in FIGS. However, the number is not limited to one, and each may be composed of a plurality of lines, or the number of the upper end side and the lower end side may be different. Further, the interval between the score lines when a plurality of lines are provided is preferably 1 mm or less. It should be noted that one step of the laminated body constituting the packaging bag 1 and the other are designed with fingers easily so that the level difference in the tear opening of the first cut line 3 and the second cut line 3 ′ is 6 mm or more. This is preferable because it can be picked.

  3, 5, 6, 7, 8, 9, and 10, the 1-1 start-point-side convergent cut line 30 </ b> A, the 1-1 end-point-side converged cut line 30 </ b> B, and the first 2-1 Starting point side converged cut line 31A and 2-1 end point side converged cut line 31B are moved to the left side (inward) from the outer edge of the left end thermal bonding part 2 'and the right end. The two specifications that converged to one point by moving inward in the left and right directions from the two positions that are retracted to the right side (inner side) from the outer edge of the thermal bonding part 2 ′ are other than the two specifications. Variations of 4 specifications, 6 specifications and even numbers are possible, with one added in the center and 3 specifications, 5 specifications, 7 specifications and odd numbers of variations are possible, starting and end points It is possible for the number to be different on the side, but in any variation, 1 There is no change in that converge to.

  In the above embodiment, the first-first start-side convergent cut line 30A, the first-first end-point convergent cut line 30B, the second-first start-side convergent cut line 31A, and the second-first end-side converged line. The cut line 31B is formed so as to converge at one point on the inner edge side of the left and right end thermal bonding portions 2 ′, but does not necessarily converge at one point, and is formed in a C shape. May be. For example, as shown in FIG. 12, among the first-first starting-side convergent cut lines 30A, cut lines (outer cut lines) 30A1 extending from the upper side toward the inner edge and cut lines extending from the lower side toward the inner edge ( It can also be configured to be close to each other without being in contact with the outer cut line 30A2. When the cut line 30A1 extending from the upper side toward the inner edge contacts the cut line 30A2 extending from the lower side toward the inner edge, the cut lines 30A1 and 30A2 may intersect due to a dimensional error, and thereby the tear line becomes the cut line. However, if it is formed in a square shape as described above, it is possible to prevent the cut lines 30A1 and 30A2 from intersecting. About such a configuration, the same applies to the (1-1) end-point-side convergent cut line (30B), (2-1) start-point-side convergent cut line (31A), and (2-1) end-point-side convergent cut line (31B). Can do. At this time, the starting point of the first-second starting side linear cut line 30C may be in a region between the end of the cut line 30A1 and the end of the cut line 30A2, and is slightly shifted in the left-right direction. Also good. The same applies to the 1-2 end point-side straight cut line 30D, the 2-2 start point side straight cut line 31C, and the 2-2 end point side straight cut line 31D.

  In this case, in addition to the I notch described above, the scar group in particular in the tear start region needs to be formed in the following region. This point will be described with reference to FIG. First, the uppermost starting point located on the outermost side of the upper cut line 30A1 is point A, the lowest starting point located on the innermost side of the upper cut line 30A1 is point B, and the left and right edges from the point A A point where a virtual line (extension line) L1 extending outward (left side) in the left-right direction orthogonal to the thermal bonding part 2 ′ intersects with the outer end of the left edge thermal bonding part 2 ′ is defined as C point. Further, the lowermost starting line 30A2 has an outermost starting point located at the outermost point D, the lowermost cutting line 30A2 has an innermost uppermost starting point at the point E, and the left and right sides from the D point. A point where an imaginary line (extension line) L2 extending outward (left side) in the left-right direction orthogonal to the edge thermal bonding part 2 ′ intersects with the outer end of the left edge thermal bonding part 2 ′ is defined as F point. As shown in FIG. 13, in addition to the I notch described above, a scar group is particularly provided in the hatched region surrounded by the six points A to F. This region is similarly formed in the right edge thermal bonding portion 2 ′, and in addition to the I notch inside this region, a scar group is provided in the tear starting region. Especially for the scar group in the tear start region, for example, if described with a scar group formed from a large number of cuts, the tear can be started from any location where the large number of cuts intersect with the outer end. This is because when the tear is started from this region, tearing is not connected to either the first cut line or the second cut line. In addition, by making the area formed by the scar group smaller than the area, even if a shift occurs in the formation position of the scar group, it can be accommodated in the area.

  Moreover, in the said embodiment, although the 1st-2 starting point side linear cut line 30C and the 1-2nd end point side linear cut line 30D are provided in the 1st cut line 3, the 1st cut line 3 is A configuration without these score lines 30C and 30D may be used. For example, as shown in FIG. 14, a first 1-3 upper end side cut line 30 </ b> E and a first 1-first end side converged cut line 30 </ b> A and a 1-1 first end point side converged cut line 30 </ b> B are provided. 3 lower cut line 30F can be provided. At this time, as shown in FIG. 11, a gap S1 is formed between the first-first start-side convergent cut line 30A and the first-third cut lines 30E, 30F, and the first-first end-side converged cut line 30B. A gap S2 may be provided between the first and third cut lines 30E and 30F, or such a gap is not provided, and the first and first starting-side converged cut lines 30A and the first and third cut lines 30E, While connecting 30F, it is also possible to connect the first-first end-side convergent cut line 30B and the first-third cut lines 30E, 30F. Even if it does in this way, the same effect as when the 1-2nd starting point side straight cut line 30C and the 1-2 end point side straight cut line 30D are provided can be acquired. Further, the second cut line 3 ′ is also constituted by only the second-third central straight cut line 31E without the 2-2 start-point-side straight cut line 31C and the 2-2 end-point-side straight cut line 31D. be able to.

  Note that the modes shown in FIGS. 12 to 14 are appropriately combined with the embodiments shown in FIGS. 3, 5, 6, 7, 8, 9, and 10. Can do.

  In addition, the four-side seal type packaging bag has been described so far, but in short, a packaging bag having a configuration in which at least one edge thermal bonding portion is formed at the opposed position of a pair of opposed edges, for example, three-way It may be a seal type or a standing type packaging bag. Further, it goes without saying that all the categories not departing from the gist of the present invention are included in the present invention.

  Next, the laminated body 10 which comprises the packaging bag 1 is demonstrated. As the outer layer of the laminated body 10, since it becomes a basic material constituting the packaging bag 1, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. Polyamide-based and polypropylene-based resins can be used. Moreover, as a film using these resin, the stretched film extended | stretched to the biaxial direction is suitable. This is because usually the outer layer 11 is often printed, and printability is required. The thickness of the film constituting the outer layer 11 may be determined in consideration of cost and the like, but is generally about 12 to 25 μm.

  Moreover, as an aluminum foil used for the intermediate | middle layer 12 of the laminated body 10, the annealed aluminum foil is suitable, and the thickness is about 6-15 micrometers.

  Further, the inner layer 13 of the laminate 10 may be a layer formed from a heat-adhesive resin that can be melted by heat and welded to each other, and is appropriately selected depending on the physical properties required for the packaging bag 1. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer , Ethylene-vinyl acetate copolymer, ionomer resin, acid copolymer of ethylene and acrylic acid, ester copolymer of ethylene and acrylic acid ester, and the like. Further, the thickness of the film constituting the inner layer 13 may be determined in consideration of required physical properties and costs.

  The laminate 10 has physical properties required when forming a packaging bag between the intermediate layer 12 and the inner layer 13, such as mechanical toughness, bending resistance, puncture resistance, impact resistance, cold resistance, In order to provide physical properties such as heat resistance and chemical resistance, for example, a strength reinforcing layer made of a film such as polyester, polyamide, polyethylene, polypropylene, polyolefin such as ethylene-propylene copolymer, or a resin layer can be provided. The strength reinforcing layer may be a combination of the film and the resin layer, and the thickness may be determined in consideration of required physical properties and costs.

  Moreover, as a lamination | stacking method of each layer of the laminated body 10 which comprises the packaging bag 1 of this invention, what is necessary is just to laminate | stack suitably using well-known lamination methods, such as a sandwich lamination method and a dry lamination method. The first cut line 3 and the second cut line 3 ′ may be physically formed using a rotary die cutter, but preferably after the laminate 10 is formed using a pulsed laser or the like. Formed on the outer layer 11. As a kind of laser used for this, a carbon dioxide laser, a YAG laser, a semiconductor laser, an argon ion laser, etc. are possible, and it is not particularly limited.

  In addition, as a result of examining the mechanism by which the actual tear line at the time of opening deviates from the score line, the present inventor has found that the tear line does not deviate from the score line when the tear line tears into a single horizontal character. On the other hand, as in the packaging bag described in Patent Document 1 and the packaging bag of the present invention, it has been confirmed that the probability that the tear line is removed increases at the cut line that combines the horizontal line, the diagonal line, and the curved line.

  Therefore, by devising the idea for solving the first problem, specifically, the shape of the score line and the shape of the score line formed on the front and back laminates constituting the packaging bag and the combination thereof, the front side Although the present invention achieves the formation of a tear line along an irregular score line even if it is torn to the back side, the disadvantage of having an irregular score line inherently, that is, It cannot be denied that there is a higher possibility that the tear line will deviate from the score line as compared to the score line that tears into one horizontal character. The original disadvantage that such an irregular cut line is incurred hardly occurs when the user opens a bag of 10 cm width for about 10 seconds at a normal speed, for example, an adult male, This may occur when the user opens a bag with a very high speed, for example, an adult male with a width of 10 cm in one second.

  Therefore, even if it is an irregular score line as in the present invention, the possibility that the tear line is deviated from the score line is reduced as much as possible, and the allowable range of the tear rate for forming a good tear opening is widened. Naturally, the device / improvement needs to be achieved by factors other than the shape of the score line, the shape of the score line formed on the front and back laminates constituting the packaging bag, and combinations thereof.

  Therefore, as a result of analyzing the mechanism by which the actual tear line at the time of opening is deviated from the score line, the present inventor has found a layer (inside the intermediate layer made of aluminum foil in which the score line is not formed) If at least one of the layers is a layer having orientation, when this does not coincide with the score line, the score line is mainly, for example, a straight line to an oblique line, There is an increased probability that the tear line will deviate from the score line at the transition point from the oblique line to the straight line, from the straight line to the curve, from the curve to the straight line, or at the inflection point of the curve where the inflection point exists. A good tear line that follows the score line of the outer layer by making a packaging bag composed of a laminate that does not have orientation in any of the layers arranged on the inner layer side of the intermediate layer consisting of Match cut line Tear lines) can be formed, i.e., to obtain a knowledge that can reduce the disadvantages associated with devised to solve the above first problem.

  From the above, in the packaging bags (first embodiment to ninth embodiment) of the present invention shown in FIGS. 3, 5, 6, 7, 8, 9, 10, 10, 12 and 14, It is preferable that all layers arranged on the inner layer side of the intermediate layer made of aluminum foil of the laminate constituting the packaging bag are made of an unstretched film and / or an unstretched resin layer, and the inner layer side of the intermediate layer of the laminate Since the layers arranged in are not oriented, the packaging bag can be cut from one (left) outer edge of the left and right edge thermal bonding portion 2 'to the outer layer cut line (first cut line 3, second cut line). When tearing along the line of sight 3 '), a better followability can be achieved, which can form a good tear opening that coincides with the cut lines of the outer layer (first cut line 3, second cut line 3'). And thus the acceptable range of tear rate to form a good tear opening It can be expanded.

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Edge thermal bonding part 2 'Left / right edge thermal bonding part 2 "Upper / lower edge thermal bonding part 3 1st cut line 3' 2nd cut line 10 Laminated body 11 Outer layer 12 Intermediate layer 13 Inner layer 20 Synthetic resin biting tool 21 Convex male member 22 Concave female member 30A 1-1 start point converging cut line 30B 1-1 end point converging cut line 30C 1-2 starting point side straight cut Line 30D First-second end-side straight cut line 30E, 30G First-third upper-end cut line 30F, 30H First-third lower-end cut line 31A 2-1 Start-point-side convergent cut line 31B 2-1 End side convergent cut line 31C 2-2 Start point side straight cut line 31D 2-2 End point side straight cut line 31E 2-3 Central side straight cut line α Cut line forming region β Articulating device forming region N1 I notch N2 V-shaped notch N3 U-shaped notch

Claims (10)

Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin to form a laminate on the near side and a laminate on the back side,
At least the left and right side edges by thermally bonding the front and back side laminates to each other at the opposing positions of a pair of left and right side edge edges in a plan view of the front side laminate. Forming an edge thermal bond,
Cutting the laminate on the near side and the back side forming the tear opening when the left side edge thermal bonding portion and the right side edge thermal bonding portion are opened in the left-right direction by the opening means provided A packaging bag that creates a step in the tear opening by making the outer surface of the surface different,
The opening means comprises a left-side opening start means, a right-side opening start means, and a step forming means sandwiched between these left-side and right-side opening start means,
The step forming means includes a front-side step forming cut line formed in an outer layer of the front-side laminated body and a back-side step forming cut line formed in an outer layer of the back-side laminated body. Has
The step forming cut line on the near side includes an arcuate cut line that swells upward and converges at a single point on the right side and branches from a point on the left side, and an arcuate cut line that bulges downward.
The back side step forming cut line has a left-right direction at a position corresponding to a position between an arcuate cut line that swells above the front side step forming cut line and a circular cut line that swells downward. It has a single score line that progresses to
A packaging bag characterized by that. The left-side opening start means is
Positions that pass through the front and back laminates that make up the left side edge thermal bonding part and do not reach the inner edge of the left side edge thermal bonding part from the outer edge of the left side edge thermal bonding part The left I notch formed;
It is a score line formed in the outer layer of the near side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from a position retracted rightward from the outer edge of the left side edge thermal bonding portion. A plurality of cut lines on the left side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from the position retracted in the right direction from the outer edge of the left side edge thermal bonding portion. And a plurality of cut lines on the left side extending so as to be close to each other,
An extension line extending rightward from the right end of the left I notch is provided at a position where it intersects the region between the two outer cut lines located on the outermost side among the plurality of cut lines on the left side of the front side.
An extension line extending rightward from the right end of the left I notch is provided at a position intersecting with the region between the two outermost cut lines located on the outermost side among the plurality of cut lines on the far left side,
The right side opening start means is:
In a position that passes through the front and back laminates constituting the right side edge thermal bonding portion and does not reach the inner edge of the right side edge thermal bonding portion from the outer edge of the right side edge thermal bonding portion The right I notch formed;
It is a score line formed in the outer layer of the near side laminated body constituting the right side edge thermal bonding portion and proceeds leftward from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. A plurality of cut lines on the right side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the right side edge thermal bonding portion, and proceeds in the left direction from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. It is a combination with a plurality of cut lines on the right side that extend so as to be close to each other,
An extension line extending leftward from the left end of the right I notch is provided at a position that intersects the region between the two outer cut lines located on the outermost side among the plurality of cut lines on the right side of the front side,
An extension line extending leftward from the left end of the right I notch is provided at a position that intersects the region between the outermost two outer cut lines among the plurality of cut lines on the right side.
The packaging bag according to claim 1. The left-side opening start means is
The left side edge thermal bonding is provided with a wide left end at the outer edge position of the left side edge thermal bonding portion and penetrating through the front side and rear side laminated bodies constituting the left side edge thermal bonding portion. A left-side tear initiation region having a right end whose width is aggregated at a position that does not reach the inner edge of the part;
It is a score line formed in the outer layer of the near side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from a position retracted rightward from the outer edge of the left side edge thermal bonding portion. A plurality of cut lines on the left side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from the position retracted in the right direction from the outer edge of the left side edge thermal bonding portion. It is a combination with a plurality of cut lines on the far left side extending so as to be close to each other,
An extension line extending in the right direction from the right end of the left tearing start area is provided at a position intersecting with the area between the two outer cut lines located on the outermost side among the plurality of cut lines on the front left side,
An extension line extending rightward from the right end of the left tear initiation region is provided at a position intersecting with the region between the two outer cut lines located on the outermost side among the plurality of cut lines on the left side,
The right side opening start means is:
The right side edge is provided with a wide right end at the outer edge of the right side edge thermal bonding portion that penetrates the front and back laminates constituting the right side edge thermal bonding portion. A right-side tear initiation region having a left end that is aggregated in width at a position that does not reach the inner edge of the thermal bonding portion;
It is a score line formed in the outer layer of the near side laminated body constituting the right side edge thermal bonding portion and proceeds leftward from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. A plurality of cut lines on the right side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the right side edge thermal bonding portion, and proceeds in the left direction from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. It is a combination with a plurality of cut lines on the right side that extend so as to be close to each other,
An extension line extending leftward from the left end of the right tear initiation region is provided at a position where it intersects with the region between the two outer cut lines located on the outermost side among the plurality of cut lines on the right side of the front side,
An extension line extending leftward from the left end of the right tear initiation area is provided at a position where it intersects with the area between the two outermost cut lines located on the outermost side among the plurality of cut lines on the right side. The packaging bag according to claim 1. The left-side opening start means is
From the outer edge of the left side edge thermal bonding portion to the inner edge of the left side edge thermal bonding portion, which is a group of scars penetrating the front and back laminates constituting the left side edge thermal bonding portion A left-side tear start area formed in a position that does not reach,
It is a score line formed in the outer layer of the near side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from a position retracted rightward from the outer edge of the left side edge thermal bonding portion. A plurality of cut lines on the left side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from the position retracted in the right direction from the outer edge of the left side edge thermal bonding portion. It is a combination with a plurality of cut lines on the far left side extending so as to be close to each other,
The left tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the left side of the near side, and two extension lines extending leftward from the left ends of the two outer cut lines. And an outer edge of the left side edge thermal bonding portion, and is provided in a region surrounded by
The left tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the left side, and two extension lines extending leftward from the left end of each of the two outer cut lines When,
It is provided in the area surrounded by the outer edge of the left side edge thermal bonding part,
The right side opening start means is:
It is a group of scars penetrating the near side and back side laminated bodies constituting the right side edge thermal bonding portion and from the outer edge of the right side edge thermal bonding portion to the inner edge of the right side edge thermal bonding portion. A right-side tear start area formed in a position that does not reach,
It is a score line formed in the outer layer of the near side laminated body constituting the right side edge thermal bonding portion and proceeds leftward from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. A plurality of cut lines on the right side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the right side edge thermal bonding portion, and proceeds in the left direction from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. It is a combination with a plurality of cut lines on the right side that extend so as to be close to each other,
The right tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the right side in front, and two extension lines extending rightward from the right ends of the two outer cut lines. And the outer edge of the right side edge thermal bonding part,
The right tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the right side, and two extension lines extending rightward from the right ends of the two outer cut lines. When,
Provided in the area surrounded by the outer edge of the right side edge thermal bonding part,
The packaging bag according to claim 1. The left-side opening start means is
From the outer edge of the left side edge thermal bonding portion to the inner edge of the left side edge thermal bonding portion, which is a group of scars penetrating the front and back laminates constituting the left side edge thermal bonding portion A left-side tear start area formed in a position that does not reach,
It is a score line formed in the outer layer of the near side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from a position retracted rightward from the outer edge of the left side edge thermal bonding portion. A plurality of cut lines on the left side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the left side edge thermal bonding portion, and proceeds in the right direction from the position retracted in the right direction from the outer edge of the left side edge thermal bonding portion. And a plurality of cut lines on the left side extending so as to be close to each other,
The left tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the left side of the near side, and two extension lines extending leftward from the left ends of the two outer cut lines. And a line connecting adjacent right ends of each of these two outer cut lines, and an outer edge of the left side edge thermal bonding portion, are provided in a hexagonal region,
The left tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the left side, and two extension lines extending leftward from the left end of each of the two outer cut lines When,
Each of these two outer cut lines is provided in a hexagonal region surrounded by a line connecting adjacent right end comrades and an outer edge of the left side edge thermal bonding part,
The right side opening start means is:
It is a group of scars penetrating the near side and back side laminated bodies constituting the right side edge thermal bonding portion and from the outer edge of the right side edge thermal bonding portion to the inner edge of the right side edge thermal bonding portion. A right-side tear start area formed in a position that does not reach,
It is a score line formed in the outer layer of the near side laminated body constituting the right side edge thermal bonding portion and proceeds leftward from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. A plurality of cut lines on the right side before extending so as to be close to each other,
It is a score line formed in the outer layer of the back side laminated body constituting the right side edge thermal bonding portion, and proceeds in the left direction from a position retracted leftward from the outer edge of the right side edge thermal bonding portion. It is a combination with a plurality of cut lines on the right side that extend so as to be close to each other,
The right tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the right side in front, and two extension lines extending rightward from the right ends of the two outer cut lines. And a line connecting adjacent left ends of each of these two outer cut lines, and an outer edge of the right side edge thermal bonding portion, provided in a hexagonal region,
The right tear initiation region has two outer cut lines positioned on the outermost side among the plurality of cut lines on the right side, and two extension lines extending rightward from the right ends of the two outer cut lines. When,
Each of these two outer cut lines is provided in a hexagonal region surrounded by a line connecting adjacent left end comrades and the outer edge of the right side edge thermal bonding part,
The packaging bag according to claim 1. The cut line for step formation on the near side is
It is a cut line formed in the outer layer of the front-side laminated body, and proceeds in a right direction from a portion adjacent to the plurality of cut lines on the left side of the near side toward a point on the left side of the step forming line on the near side. One cut line on the left side before
It is a cut line formed in the outer layer of the front-side laminate, and proceeds in the left direction from a portion adjacent to the plurality of cut lines on the right side toward the right point of the step forming line on the front side. And a single score line on the right side
The back side step forming cut line is
One point on the left side of a single cut line provided on the back side step forming cut line from a portion adjacent to the plurality of cut lines on the back left side, which is a cut line formed in the outer layer of the laminated body on the back side A single cut line on the left side that goes to the right toward
One point on the right side of a single cut line provided on the back side step forming cut line from a portion adjacent to the plurality of cut lines on the right side, which is a cut line formed in the outer layer of the back side laminate. Further comprising a single cut line on the right side that proceeds leftward toward
A packaging bag according to any one of claims 1 to 5. The one cut line provided on the back left side, the one cut line provided on the back side step forming cut line, and the one cut line provided on the back right side are arranged in a straight line. Being
The packaging bag according to claim 6. The plurality of score lines on the left side are odd numbers including one in the center,
The packaging bag according to claim 7. A synthetic resin occlusion device comprising a protruding male member and a concave female member, which are engaged with each other, is provided at a position facing the inner surface of the packaging bag below the opening start means,
The packaging bag according to any one of claims 1 to 8, wherein a re-seal function is provided by engaging the male member and the female member. The laminates on the near side and the back side are all composed of an unstretched film and / or an unstretched resin layer, all of the layers arranged on the inner layer side from the intermediate layer,
The packaging bag according to any one of claims 1 to 9, wherein

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