JP2024036787A - Package - Google Patents

Abstract

To facilitate opening a package and taking out contents, to obtain a clean cut, and to prevent the generation of trash when opening.SOLUTION: In a package 11 in which a space is formed to store contents and there is a front sheet part 12a and a back sheet part 12b facing each other, an opening sheet 14 is provided at the upper end between the front sheet part 12a and the back sheet part 12b. The opening sheet 14 has a linear fold line 41 formed to be torn by being folded in two. On the opening sheet 14, the surface where the fold line 41 is a ridge folding line when folded is defined as an outer surface 14a, and the other surface as an inner surface 14b, and both sides sandwiching the fold line 41 on the outer surface are joined to the inner surface of the front sheet part 12a. An upper side part 43 of both side parts sandwiching the fold line 41 on the inner surface is joined to the inner surface of the back sheet part 12b. A separation line part 15 that opens when the opening sheet 14 is bent is formed in the portion of the front sheet part 12a where the opening sheet 14 is joined.SELECTED DRAWING: Figure 2

Description

The present invention relates to a package such as a packaging bag or a flexible packaging container, and more particularly to the structure of the unsealed portion thereof.

Taking a packaging bag as an example, a packaging bag has a notch (incision) that can be used as a starting point for tearing off the bag and a fragile part that can be easily removed. Since the opening is done by pulling the end part by hand, there is no guarantee that the cut part will be in a clean straight line. Depending on the method of pulling, the separation position may be misplaced or the separated portion may be stretched, making the opening of the package unsightly. This is acceptable in the case of a package whose contents are used up immediately after opening, but in the case of a package in which this is not the case, a cut surface that cannot be called beautiful will remain, resulting in an unsightly appearance of the package.

On the other hand, when a clean cut is obtained by cutting the edges, the opening of the package means that the parts that should be separated are in close contact with each other, so if the material that makes up the opening is soft and thin, It's hard to do.

The bag body disclosed in Patent Document 1 listed below is configured so that when the bag body is separated at the separation line on both the front and back sides in the vicinity of the upper end, stepped portions having different heights on the front and back sides are exposed. The separation line is a weakened line formed by a groove in a thinner part of the bag body. Once this bag is opened, it is easy to open because a step appears at the opening.

However, since the separation line is a thin part, there is a width in the part where it is easy to break. For this reason, it is not always possible to perform clean separation along the separation line. Moreover, the small pieces that are cut off become garbage and cause environmental problems if not properly disposed of.

Further, as a packaging bag (sealed bag) that is easy to open, there is also one disclosed in Patent Document 2 below. This packaging bag has a pair of flexible sheets provided on the inside or outside of the mouth edge of the bag, and when the ends of the flexible sheets are pinched together between the thumb and index finger in a direction toward each other, the bag becomes flexible. The flexible sheets are configured to bend outwardly and separate from each other.

A packaging bag having such a structure is advantageous in that it does not contain anything that separates and becomes waste when opened. However, since the bag must be held between the thumb and forefinger when opening, the structure of Patent Document 2 cannot be applied to packaging bags that are too large to be held between the thumb and forefinger.

Patent No. 5182885 Special Publication No. 2012-529406

The main purpose of this invention is to provide a clean cut, easy to open and take out, and to prevent the generation of dust when opening.

The means for this purpose is a package having sheet parts facing each other and forming a space in which the contents are stored, and a tear sheet is provided between the sheet parts, and the tear sheet is folded in two. A linear fold line is formed when the opening sheet is folded, and when the opening sheet is folded, one surface with the fold line as a mountain fold line is set as an outer surface, and the other surface is set as an inner surface. Both sides sandwiching the line are joined to the inner surface of one of the sheet portions, and one side of the both side portions of the inner surface sandwiching the fold line is joined to the inner surface of the other sheet portion. The packaging body is provided with a separation line portion that opens when the tear sheet is folded, at a portion where the tear sheet is joined.

In this configuration, when the opening sheet is folded in half by operating from above the sheet portion, the opening sheet is torn and the fold line opens. When the fold line is opened, the separation line of one of the sheet parts is also opened and the seal is opened.

Both sides of the opening sheet sandwiching the open fold line are separated from each other or nearly separated, but the outer surface of the opening sheet is integral with both sheet parts, and the inner surface of the opening sheet is separated from the other sheet. It is integrated with the seat section and reinforces the opening edge of the seat section. Since the opening sheet that is torn by folding opens along the predetermined fold line, the opening has the desired shape, unlike the case where a film or the like constituting a packaging bag is cut off at a thin section.

According to this invention, the opening sheet is provided with an opening sheet that is folded in half and opened at the fold line, and is configured to be opened by folding, making it easy to open. Moreover, since the opening sheet opens along the fold line, the portion that is exposed after opening can be kept in a state where it is not unsightly. Furthermore, since the opening sheet is configured so that even after the fold line is opened by folding, both sides of the fold line remain on the sheet part, so the shape of the opening edge of the sheet part is reinforced, making it easier to take out the contents. be able to. Furthermore, since there is no part of the package that can be separated and thrown away even if it is opened, it can also contribute to environmental issues.

A perspective view of a package. FIG. 3 is a perspective view of a state in which the package is opened and the mouth is open. A sectional view showing an unsealing structure. A perspective view of an opening sheet. A sectional view showing an unsealing structure and its function. FIG. 3 is a perspective view showing changes in the form of the opening sheet. FIG. 3 is a cross-sectional view showing an example of discharging contents from a package. FIG. 3 is a cross-sectional view showing the unsealed structure after opening. FIG. 3 is a cross-sectional view showing another example of the structure of the opening sheet. FIG. 7 is a perspective view of an opening sheet according to another example. FIG. 10(a) is a perspective view of the package provided with the tear sheet shown in FIG. 10(a) in an open state. FIG. 7 is a sectional view of an unsealing structure according to another example. FIG. 7 is a front view of a package according to another example. FIG. 7 is a sectional view of an unsealing structure according to another example. 15 is a partially cutaway front view showing the unsealing structure of FIG. 14. FIG. FIG. 15 is a sectional view showing the unsealing structure of FIG. 14 and its operation. FIG. 7 is a sectional view of an unsealing structure according to another example. FIG. 7 is a front view of a package according to another example. FIG. 7 is a front view of a package according to another example.

One embodiment of the present invention will be described below with reference to the drawings.

A package is constructed by storing contents in a packaging material in the form of a bag or container. There are various packaging formats for bags and containers, such as gassho bag, gassho side gusset, horizontal pillow, vertical pillow, three-sided seal, four-sided seal, stick, tetra, stand pouch, four-sided pillar sticker, etc. be. There are also types with zippers and spouts.

FIG. 1 shows a gassho bag type package 11 as an example. The package 11 has sheet parts 12a and 12b facing each other and forming a space in which the contents are stored. In other words, the sheet parts 12a and 12b are also parts that serve as openings for discharging the contents. Since the packaging body 11 is of the folding type, the opposing sheet parts 12a and 12b are the front sheet part 12a and the back sheet part 12b, which are made of the same sheet material 12 (packaging material). The back side sheet portion 12b has a seal portion 12c that joins the ends of the sheet material 12 at the middle portion in the left-right direction. The upper end and lower end of the package 11 are sealed by an upper end seal part 12d and a lower end seal part 12e, respectively.

An unsealing structure 13 for unsealing is provided in a portion of the package 11 that is to be opened. The package 11 illustrated in FIG. 1 has an opening structure 13 located adjacent to the upper end seal portion 12d so that the package 11 can be opened in the same way as the upper end seal portion 12d is separated and opened.

FIG. 2 shows a perspective view of the package 11 opened and opened, and FIG. 3 shows a sectional view of the opening structure 13.

As shown in these figures, the unsealing structure 13 includes an unsealing sheet 14 between the front sheet part 12a and the back sheet part 12b.

The unsealing sheet 14 is made of synthetic resin, paper, or the like that is harder than the sheet material 12 as a packaging material that constitutes the sheet portions 12a and 12b. Hardness allows the material to be folded in half and bent at an acute angle, and in addition to such hardness, it is preferable that the material also has flexibility to bend when force is applied. The opening sheet 14 is formed with a linear fold line 41 that is torn when it is folded in two.

Specifically, as shown in FIG. 4, the opening sheet 14 has a flat rectangular plate shape, in other words, a band shape or a strip shape, extending across the entire width direction of the package 11 like the upper end seal portion 12d. FIG. 4(a) is a perspective view of the opening sheet 14 seen from one side, and FIG. 4(b) is a perspective view of the opening sheet 14 seen from the other side. The length of the opening sheet 14 in the lateral direction (width direction) is formed in accordance with the mode of deformation and the structure of the folding line 41 so that it can be folded in two for opening at the folding line 41.

The fold line 41 is formed in a straight line along the longitudinal direction at an intermediate position in the width direction. Its structure is a slit (cut) that penetrates in the thickness direction. The fold line 41 may be formed from one end to the other in the longitudinal direction of the tear sheet 14, but in the illustrated example, the fold line 41 is formed slightly shorter than the length of the tear sheet 14, and the fold line 41 is formed at both ends of the tear sheet 14. have. This folding line 41 has a structure in which the flat opening sheet 14 is folded at the intermediate portion in the width direction to open it. Therefore, the length of the opening sheet 14 in the width direction is set so that it can be folded by hand.

A sealing material 42 having gas barrier properties is provided at a portion of the opening sheet 14 having the fold line 41 . Although the sealing material 42 is for obtaining airtightness, it is necessary to break it when the tear sheet 14 is bent. For this reason, it is preferable to use metal foil such as aluminum foil. When using aluminum foil, one having a thickness of about 20 μm can be used. The sealing material 42 is attached to one side of the unsealing sheet 14 by thermocompression bonding with a hot-melt adhesive interposed in the entire longitudinal direction of the middle part in the width direction.

Here, when the opening sheet 14 illustrated in FIG. 4 is folded in half for opening, it is folded so that the surface to which the sealing material 42 is attached becomes the outer surface. In other words, the surface having the sealing material 42 is the surface that makes the fold line 41 a mountain fold line when folded. In this description, the surface having the sealing material 42 is referred to as the "outer surface 14a", and the surface opposite to this, that is, the surface where the fold line 41 is a valley fold line when folded, is referred to as the "inner surface 14b".

Such an opening sheet 14 is provided at a position immediately below the upper end seal portion 12d in such a manner that it is joined to the front side sheet portion 12a and the back side sheet portion 12b. The joining to the sheet parts 12a and 12b is performed by placing both sides of the opening sheet 14 across the fold line 41 of the outer surface 14a to the inner surface of one of the sheet parts, and joining the opening sheets 14 to the inner surface of one of the sheet parts, and joining the opening sheet 14 to the inner surface of one of the sheet parts, sandwiching the fold line 41 of the inner surface 14b. Do this on one side against the inner surface of the other sheet. Then, a separation line portion 15 is formed at the portion of one sheet portion 12a where the tear-off sheet 14 is joined so that when the tear-off sheet 14 is folded in half and the fold line 41 is opened, the sheet portion also opens. ing.

Specifically, as shown in FIG. 1, the package 11 has a structure in which the front sheet portion 12a has an opening. For this reason, as shown in FIGS. 3 and 5 (a), which are cross-sectional views, both sides of the outer surface 14a of the opening sheet 14 sandwiching the fold line 41 are welded or adhered to the inner surface of the front sheet portion 12a. . Further, one side of the both sides (upper side part 43 and lower side part 44) sandwiching the fold line 41 on the inner surface 14b, that is, the upper side part 43 in this example, is welded or bonded to the inner surface of the back side sheet part 12b. do. The sealing material 42 on the outer surface 14a of the opening sheet 14 and the front sheet portion 12a are in close contact. In the drawings, a joint 16 where the opening sheet 14 and the sheet parts 12a and 12b are joined is indicated by a thick line.

The opening structure 13 includes the opening sheet 14 between the front side sheet part 12a and the back side sheet part 12b, but as shown in the imaginary line in FIG. are not joined together as a whole. The entire outer surface 14a of the opening sheet 14 is joined except for the part where the sealing material 42 is located, whereas the inner surface 14b is joined only at the upper part 43 located on the upper end seal part 12d side. The lower part 44 is not joined.

The separation line part 15 formed on the front side sheet part 12a is composed of a slit penetrating in the thickness direction, and is formed in the same straight line as the fold line 41 at a position corresponding to the fold line 41 in the tearable sheet 14.

The contents can be stored while being made into bags using a filling and packaging machine, or in bags that have been made in advance, or can be stored without using a filling and packaging machine.

The unsealing structure 13 is constructed by joining the inner surfaces of the sheet parts 12a and 12b with the unsealing sheet 14, but since the unsealing structure 13 is formed at a position adjacent to the upper end seal part 12d, it is easy to store the contents. It will not cause any trouble.

The package 11 configured as described above is opened in the following manner.

As shown in FIG. 5(b), the upper half of the unsealing structure 13 is folded back toward the back side to form a two-fold state. As a result, the fold line 41 of the unsealing sheet 14 is cracked, the sealing material 42 is broken, and the fold line 41 is opened along its longitudinal direction. At the same time, the separation line part 15 of the front side sheet part 12a is opened, and the lower part of the upper end seal part 12d of the package 11 is opened over almost the entire width direction. As shown in FIG. 5C, the opening has a desired size depending on the bending and separation of the upper part 43 and lower part 44 of the tearable sheet 14.

If the contents are to be heated before eating, it is best to heat them in this state.

FIG. 6 shows the change in the form of the unsealing sheet 14 during such an unsealing operation. FIG. 6(a) shows the state before opening, and FIG. 6(b) shows the state folded in half. After the fold line 41 is opened, as shown in FIG. 6(c), by pushing both ends of the opening sheet 14 in the longitudinal direction toward each other and pinching them, the opening opens forward and backward.

In this open state, as shown in FIG. 5(c), the lower part 44 of the opening sheet 14 is present in the front sheet part 12a, and the upper part 43 is present in the rear sheet part 12b. do. Therefore, the shapes of the opening edges of the front sheet portion 12a and the back sheet portion 12b are reinforced.

The contents are discharged as appropriate depending on the type of contents. If the contents are solids such as individually wrapped sweets, the necessary amount is taken out as needed, and if the contents are powders such as ground coffee powder, the necessary amount is scooped out as needed, and tablets and plants are If it is a grain such as a seed, the required amount can be taken out by tilting the opening downward. Even when the contents are liquids or viscous substances such as jam, margarine, soy sauce, retort curry, and pet food, they are discharged by tilting as shown in FIG. Since the hard opening sheet 14 is present in the opening portion, hardness can be obtained at the edge of the opening. Therefore, fine adjustment of the discharge amount is easy. Moreover, since the unsealing structure 13 is formed under the upper end seal part 12d, when the upper end seal part 12d side is folded back to open the upper end seal part 12d, the open state can be maintained by holding the upper end seal part 12d with your fingertips. Cheap.

If the container is to be stored with the contents remaining, the upper end portion folded back upon opening can be returned as shown in FIG. 8, and the mouth can be closed as shown by the imaginary line. If necessary, the opening may be closed by wrapping the upper end portion of the sheet material 12 around the upper end seal portion 12d and the upper side portion 43 of the tearable sheet 14.

The cuts that appear when the package is opened are the fold line 41 of the opening sheet 14 and the separation line 15 of the front sheet portion 12a, both of which are formed through in advance, so the appearance may be unexpected. It is possible to make it look neater without having to worry about it. Therefore, if the contents are not completely dispensed or used, the appearance of the package 11 is not bad even if it is left as is. If the cut ends are messy and unsightly, even if the contents are good, their value may be reduced, but this inconvenience can be eliminated. Another advantage is that a clean opening can be obtained without using tools such as scissors.

Moreover, since the unsealing operation involves simply folding the unsealing sheet 14, less force is required and the opening is easier than when pulling the edges to separate or tear the opening sheet. You can open it even when your fingertips are slippery. In order to open the mouth after opening, since the hard opening sheet 14 is present in the operating part, as shown in FIG. This can be easily done by transforming it into Since the fold line 41 of the opening sheet 14 and the separation line portion 15 of the front side sheet portion 12a are formed in the same position, it can be opened easily by a deforming operation such as pinching. Even if the opening structure 13 is too large to be pinched by hand, the rigidity of the opening sheet 14 makes it possible to perform the desired operation, unlike when the opening sheet 14 is made of a flexible film with trimmed edges. possible and easy to open.

Furthermore, since the upper end seal portion 12d and the tear sheet 14 remain in the package 11 and are not separated after opening, it is possible to prevent them from becoming difficult-to-handle garbage.

Other examples will be explained below. In this description, parts that are the same as those in the above-described configuration are given the same reference numerals, and detailed description thereof will be omitted.

FIG. 9 shows the cross-sectional structure of the opening sheet 14. That is, the sealing material 42 may be placed on one side of the unsealing sheet 14 as shown in (a). It may be present within the thickness of the opening sheet 14 by extrusion lamination as shown in (b). It is also possible to provide the entire surface of at least one side of the opening sheet 14 as shown in (c). In either case, the surface where the fold line 41 is a mountain fold line when folding in half for opening is the outer surface 14a, and the surface where the valley fold line is the inner surface 14b. In the example of FIG. 9(b), both surfaces can serve as the outer surface 14a and the inner surface 14b, respectively.

Although the folding line 41 is formed of a slit penetrating in the thickness direction in the above example, it is sufficient that the folding line 41 is torn and penetrated during deformation, and does not necessarily need to be penetrated in advance. Further, instead of slits, it may be configured with perforations, thin-walled portions (grooves), etc. This also applies to the separation line portion 15 formed on the sheet material 12, and the separation line portion 15 may be formed of a material other than a slit.

FIG. 10 is a perspective view of the opening sheet 14 seen from the back side. This opening sheet 14 has a folding line 45 that intersects with the folding line 41. Specifically, the tear sheet 14 shown in FIG. 10(a) has a rectangular plate shape and a fold line 41 extending in the longitudinal direction in the middle of the width direction. It has a bending line 45 that extends in a straight line throughout the width direction (short side direction) of 14. In the illustrated example, the bending lines 45 are configured with so-called bending ruled lines to enable neat bending, but any configuration that makes bending easy is sufficient, and they may also be configured with perforations or appropriate cuts.

In the package 11 provided with such an opening sheet 14, the same opening operation as described above is performed, the opening sheet 14 is folded in half and opened, and then both ends are deformed in a direction toward each other. Then, the portion having the bending line 45 is immediately bent and the mouth opens forward and backward. As shown in FIG. 11, the opening is approximately diamond-shaped in plan view and opens wide in the front-rear direction. Therefore, when the contents are to be discharged by tilting, it is easy to take out the required amount. Furthermore, when discharging the contents by tilting the container, the portion through which the contents pass is at an acute angle, so that the contents can be properly discharged without spilling when transferred to another container or the like.

The folding lines 45 may be formed at equal left and right positions in the longitudinal middle of the opening sheet 14, or may be formed at unequal positions on the left and right sides. As shown in FIG. 10(b), if the formation positions are shifted on both sides (upper side part 43, lower side part 44) sandwiching the fold line 41, the opening sheet 14 can be sandwiched between both ends of the folded opening sheet 14. When a load is applied, the load becomes uneven and the fold line 41 tends to open. A plurality of folding lines 45 may be arranged in the direction along the folding line 41.

FIG. 12 is a sectional view of the opening structure 13 in the package 11. That is, the package 11 is provided with an opening sheet 14 at the upper end seal portion 12d. The upper part 43 above the folding line 41 in the opening sheet 14 is incorporated into the upper end seal part 12d, and the manner of joining is the same as that of the package 11 described above.

The package 11 having such an opening structure 13 can have a large space in which the contents can be stored.

FIG. 13 is a front view of the package 11, which has an opening structure 13 at a corner of the storage space. Specifically, the unsealing structure 13 is formed at a position below and adjacent to the upper end seal part 12d, and at a position corresponding to one end in the longitudinal direction of the upper end seal part 12d.

The unsealing sheet 14 constituting the unsealing structure 13 has a square plate shape, and fold lines 41 are formed on the diagonal lines thereof. The length of one piece of the opening sheet 14 is shorter than the length of the upper end seal portion 12d. The opening sheet 14 is fixed such that one of the two corners where the fold line 41 does not exist is aligned with the corner of the storage space, and the fold line 41 is inclined with respect to the upper end seal portion 12d. As shown in the illustrated example, the inclination of the folding line 41 is such that the upper part 43 of the triangle located above the folding line 41 is located at the corner. The manner in which the opening sheet 14 is joined to the front sheet portion 12a and the back sheet portion 12b is the same as described above, and the upper portion 43 is joined to both the front sheet portion 12a and the back sheet portion 12b.

The package 11 having such a structure has solid contents such as candies and tablets that can be taken out without touching the storage space, and the contents are relatively small compared to the package 11. Suitable for storing things.

FIG. 14 is a sectional view of the unsealing structure 13, and FIG. 15 is a front view of the package 11 with the end of the unsealing structure 13 cut away. The unsealing structure 13 of this package 11 is formed by forming the separation line part 15 of the front sheet part 12a at a position beyond the position that coincides with the fold line 41 on the opening sheet part 14, and forming the flap part 17 on the front sheet part 12a. has been established. Specifically, the opening sheet 14 is the same as that shown in FIG. 4, and is formed into a rectangular plate shape, with a fold line 41 extending along the longitudinal direction formed in the middle of the width direction. In the example described above, the separation line portion 15 formed on the front side sheet portion 12a was formed in the same form as the weaving line 41 at a position corresponding to the weaving line 41, but in the examples shown in FIGS. It is formed in a straight line at a position corresponding to the lower part 44 on the lower side. The flap portion 17 is located between the separation line portion 15 and the position corresponding to the fold line 41 on the front side sheet portion 12a. At the longitudinal end of the separation line portion 15, that is, at the end of the flap portion 17, a cut portion 17a extending in the up-down direction or a similar direction is formed.

This flap portion 17 is formed so that its tip faces downward, and is integrated with the upper side portion 43 of the opening sheet 14.

The manner in which the opening sheet 14 is joined to the front side sheet portion 12a and the back side sheet portion 12b is the same as described above as shown in FIGS. 14 and 16(a). An adhesive may be provided between the sealing material 42 of the unsealing sheet 14 and the front sheet portion 12a, which are in close contact with each other in the above example. That is, upon joining, an adhesive is applied to the opening sheet 14 side, and then the opening sheet 14 is joined. Instead of an adhesive, a suction cup layer having extremely small suction cups can also be formed.

When the package 11 equipped with the opening structure 13 having the flap part 17 is opened, the flap part 17 peels off from the lower part 44 of the opening sheet 14 to which it is in close contact, as shown in FIG. 16(b). It becomes like standing up. When a portion of the contents is taken out and then returned to its original position and the opening is closed, the flap portion 17 joins to the surface of the opening sheet 14 as shown by the imaginary line in FIG. It will be cut off from Therefore, deterioration of the contents such as drying can be suppressed, and unexpected opening can be suppressed.

It is preferable that the adhesive has re-adhesive properties so that it can be reapplied even if it is once removed.

Although not shown, the flap portion 17 may be formed integrally with the lower side portion 44 of the opening sheet 14 so that the tip thereof faces upward.

FIG. 17 is a partially cutaway front view of the opening sheet 14 showing the form of the fold line 41. In the previous example, the folding line 41 was formed in a straight line, but it may be formed in a curved line. FIG. 17(a) is an example in which the waveform is formed in an arc shape, and FIG. 17(b) is an example in which the waveform is formed in a waveform having two or three peaks.

In either case, the load required for bending can be increased compared to when the fold line 41 is a straight line, and accidental tearing of the fold line 41 during transportation can be suppressed. In addition, when the folding line 41 is formed in a waveform as shown in FIG. 3(b), the area that the fingertip touches when folding for opening can be made relatively wide without increasing the width of the opening sheet 14. Therefore, even when the package 11 is such that the size of the opening sheet 14 is such that it is impossible to deform both ends of the opening sheet 14 in a direction toward each other by holding it in one hand, the opening can be opened back and forth after being folded and opened. is easy.

Although FIG. 17 shows an example in which the sealing material 42 is formed into a band shape regardless of the bending of the fold line 41, it may have a shape along the fold line 41.

18 and 19 are front views of the package 11. FIG. 18(a) shows a three-side seal type package 11, and FIG. 18(b) shows a four-side seal type package 11. In the figure, 12f is a seal portion.

FIG. 19 shows a package 11 that is used in the same way as a spouted pouch. That is, an opening structure 13 is formed at the upper end instead of the spout. This eliminates the need for a spout, which is an injection molded product, and contributes to reducing the amount of plastic used and after disposal.

In addition to these, various types of packages 11 can be provided with the opening structure 13 as described above.

Although not shown, a separation line portion 15 may be formed on the back side sheet portion 12b. With such a configuration, it is possible to prevent the cut end from appearing on the front even after opening the package.

Further, the unsealing structure 13 can be provided at an appropriate location depending on the form of the package 11 and the contents, such as the upper end, the lower end, or the middle part.

DESCRIPTION OF SYMBOLS 11... Packaging body 12a... Front side sheet part 12b... Back side sheet part 13... Opening structure 14... Opening sheet 14a... Outer surface 14b... Inner surface 15... Separation line part 16... Joint part 17... Flap part 41... Folding line 42 ...Sealing material 43...Upper side part 44...Lower side part 45...Bending line

Claims (5)

A package having sheet portions facing each other and forming a space in which contents are stored,
A tear sheet is provided between the sheet portions,
A linear fold line is formed on the opening sheet to be torn by folding it in two,
When folding the opening sheet, the folding line is a mountain folding line, one surface is an outer surface, and the other surface is an inner surface,
Both sides of the outer surface sandwiching the fold line are joined to the inner surface of one of the sheet parts,
One side of the both sides of the inner surface sandwiching the fold line is joined to the inner surface of the other sheet portion,
A package in which a separation line portion that opens when the tear sheet is folded is formed in a portion of one of the sheet parts to which the tear sheet is joined. The package according to claim 1, wherein the separation line portion is formed at a position that coincides with the fold line on the tear sheet. 2. The package according to claim 1, wherein the separation line portion is formed at a position beyond the position on the opening sheet that coincides with the fold line, and one of the sheet portions is provided with a flap portion. The package according to claim 2 or 3, wherein a portion of the opening sheet having the fold line is provided with a sealing material having gas barrier properties. The package according to claim 2 or 3, wherein a folding line intersecting the folding line is formed on the opening sheet.

Images