JP7195174B2 - Packaging bag and packaging bag manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a packaging bag and a method for manufacturing a packaging bag.

A packaging bag for packaging an article such as toilet paper comprises a main body in which the article to be packed is accommodated, a handle provided integrally with the main body at the upper part of the main body, and fingers provided on the handle. and a hanging portion. In such a packaging bag, a purchaser of toilet paper, etc., can grasp the handle of the packaging bag by putting his or her finger on the finger hook of the handle, and the goods contained in the packaging bag can be grasped. can be carried.

For example, in FIG. 2 of Japanese Patent No. 4856412 (Patent Document 1), one finger hook hole (cut) is formed in the upper edge provided on the upper side of the body portion in which the object to be packaged is accommodated. A packaging bag is disclosed. In addition, in FIG. 1 of Japanese Patent No. 4226932 (Patent Document 2), there is shown a roll product storage packaging bag in which two finger holes (perforations) are formed in a grip portion provided at the top of the main body. is disclosed.

Japanese Patent No. 4856412 Japanese Patent No. 4226932

However, when the conventional packaging bag is gripped by putting a finger on the finger hook portion of the handle, the weight and volume of the object to be packaged contained in the packaging bag, the way the packaging bag is held, etc. , Fingers and palms may be tightened, and fingers may hurt when carrying. In addition, when the packaging bag is carried, the handle may be stretched or broken. Therefore, it is difficult to hold the packaging bag containing the object to be packaged, and the packaging bag may be damaged during carrying.

An object of the present invention is to provide a packaging bag that is easy to hold and hard to break.

A first aspect of the present invention is a packaging bag having a main body portion for accommodating an object to be packaged, a seal portion for sealing a top surface of the main body portion, and a handle portion formed on the top surface. wherein the body portion is formed of a tubular film folded into a gusset shape, the sealing portion is configured to seal an opening of the tubular film, and the top surface is formed of the sealing portion and a lower portion of the top surface that overlaps with a portion of the upper portion of the top surface. It is a packaging bag joined to the said part of the top surface upper part.

In this specification, folding in a gusset shape means folding the peripheral surface of the tubular film radially inward to form a pair of mountain folds and valley folds. Further, the tubular film folded in a gusset shape constitutes the main body part with the opening sealed by the seal part.

The main body has a top surface, a bottom surface facing the top surface and the main unit in the height direction, a front surface continuous with the top surface and the bottom surface, and a front surface continuous with the top surface and the bottom surface and opposed in the depth direction. It has a rear surface, a top surface, a bottom surface, a front surface, and a pair of side surfaces facing the rear surface continuously in the width direction. Further, the top surface of the top surface is continuous to the front and back surfaces of the main body at its upper part, and is continuous to the upper part of the top surface and to the pair of side surfaces of the main body at its lower part.

In addition, the phrase "the upper part of the top surface overlaps the lower part of the top surface" means that the lower part of the top surface faces the part of the upper part of the top surface in the height direction of the main body. In addition, the part of the upper part of the top surface that overlaps with the lower part of the top surface is a pair of triangles located on the upper surface of the lower part of the top surface in the state where the object to be packaged is stored in the main body part. indicate the part. Further, both ends of the belt-like member are joined to the upper part of the top surface means that joints are formed between both ends of the belt-like member and the upper part of the top surface.

In the first aspect, both ends of the belt-shaped member in the longitudinal direction are joined to a part of the upper portion of the top surface that overlaps the lower portion of the top surface. can. As a result, in the first aspect, it is easy to put (insert or insert) a finger or a palm (hereinafter referred to as a finger or the like) on the handle portion. Further, in the first aspect, since the handle portion is formed of a belt-shaped member, the handle portion can be easily grasped (or gripped) with fingers or the like. Therefore, according to the first aspect, it is possible to provide a packaging bag that is easy to hold.

In addition, in the first aspect, the handle portion formed of the belt-shaped member can be easily grasped (or grasped) with fingers or the like, so that fingers or the like can be suppressed from being tightened or having pain in the fingers or the like. . Therefore, according to the first aspect, it is possible to relieve (or alleviate) the load applied to the fingers or the like when the grip portion is gripped. Furthermore, in the first aspect, the load applied to the fingers or the like when the handle is gripped is reduced, so that the packaging bag containing the object to be packaged is less likely to be damaged when carried.

A second aspect of the present invention is a packaging bag in which both longitudinal ends of the belt-shaped member are joined to both lateral ends of the top surface of the main body. In this specification, the width direction of the main body indicates the direction in which a pair of side surfaces continuous with the lower portion of the top surface face each other.

Further, when both ends of the belt-shaped member in the longitudinal direction are joined to both ends of the top surface of the main body in the width direction, it means that one end of the belt-shaped member in the longitudinal direction is connected to the top surface of the main body in the width direction. It shows that one end is joined, and the other end in the longitudinal direction of the belt-shaped member is joined to the other end of the top surface in the width direction of the main body. That is, a joint (first joint) is formed between one end in the longitudinal direction of the belt-shaped member and one end of the top surface in the width direction of the main body, and the other end in the longitudinal direction of the belt-shaped member. A joint portion (second joint portion) is formed between the end portion and the other end portion of the top surface in the width direction of the main body portion.

In the second aspect, both ends in the longitudinal direction of the belt-shaped member are joined to both ends of the top surface in the width direction of the main body, so that a portion that can be grasped (or gripped) with fingers or the like as a handle ( It is possible to increase the length of the belt-shaped member joined to the upper part of the top surface, excluding both ends in the longitudinal direction. This makes it easier to put (insert or insert) a finger or a palm (hereinafter referred to as a finger or the like) on the handle, and the handle can be more easily grasped (or gripped) with the finger or the like. .

A third aspect according to the present invention is a packaging bag, wherein the handle part is arranged so that the belt-shaped member overlaps the upper part of the top surface. In this specification, the belt-shaped member overlaps with the upper part of the top surface means that the belt-shaped member faces the upper part of the top surface of the top surface.

In the third aspect, since the belt-shaped member forming the handle portion overlaps the top surface in this way, when the handle portion is grasped, the belt-shaped member forming the handle portion is planar with respect to the fingers and the like. easier to hit. In other words, it becomes difficult for the handle portion to linearly contact the finger or the like. Thereby, in the third aspect, it is possible to provide a packaging bag that is easier to hold.

In addition, in the third aspect, the belt-shaped member constituting the handle easily touches the fingers, etc., in a planar manner, so that the fingers, etc., are not tightened by the handle, and the fingers, etc., are prevented from becoming painful. can be suppressed further. Therefore, according to the third aspect, the load applied to fingers or the like when gripping the handle portion is further alleviated, and the packaging bag is less likely to be damaged.

A fourth aspect of the present invention is the packaging bag, wherein at least one end of the longitudinal ends of the belt-like member is folded back and joined. Here, at least one end of both longitudinal ends of the belt-like member indicates either one or both ends in the longitudinal direction of the belt-like member. Also, joining with the ends of the band-shaped member folded back means that both ends and both folded ends (portions where both ends are folded back) of the strip-shaped member are joined to the top surface.

In the fourth aspect, the ends of the belt-shaped member are folded back and joined to the upper part of the top surface, so that the ends of the belt-shaped member constituting the handle are reinforced while being joined to the top surface. can be done. That is, both ends and both folded ends of the belt-like member are joined to the top surface, and the joints of the belt-like member are reinforced. Therefore, according to the fourth aspect, it is possible to suppress breakage of the handle portion from the top surface.

A fifth aspect of the present invention is the packaging bag, wherein at least one end in the width direction of the belt-like member curves toward the other end in the width direction. At least one end in the width direction of the belt-like member means either one or both ends in the width direction of the belt-like member. Further, the term "curving toward the other end in the width direction" means that at least one end in the width direction of the belt-shaped member is curved concavely (to form a curved portion or a concave portion) toward the other end in the width direction.

In the fifth aspect, since at least one end in the width direction of the belt-shaped member is curved in this way, it becomes easier to insert a finger or the like from one end side in the width direction of the curved belt-shaped member. In addition, since the length of the belt-shaped member in the width direction is short in the belt-shaped member in which one end in the width direction is curved in this way, the handle formed of such a belt-shaped member is easy to grasp. Therefore, according to the fifth aspect, it is possible to provide a packaging bag that is easier to hold.

A sixth aspect of the present invention is a packaging bag, wherein the handle portion is composed of two belt-shaped members arranged in a direction intersecting the longitudinal direction. In this specification, the direction crossing the longitudinal direction refers to the direction along the direction substantially perpendicular to the longitudinal direction of the strip-shaped member, or the width direction of the strip-shaped member joined to the upper part of the top surface.

In the sixth aspect, the handle is composed of two band-like members, and thus the handle is divided into a plurality of members. In such a configuration, when the handle is grasped (gripped) with fingers or the like, the handle is twisted (or partially overlapped) according to the state of the fingers or the like. In other words, the belt-shaped member deforms (or fits) in a shape that is familiar to fingers and the like. Therefore, according to the sixth aspect, the handle can be stably grasped (or gripped).

A seventh aspect according to the present invention is the packaging bag, wherein at least one of the two strip-shaped members is folded at least one end in the width direction of the strip-shaped member. Here, at least one strip-shaped member of the two strip-shaped members indicates both strip-shaped members or either strip-shaped member of the two strip-shaped members. Moreover, at least one end in the width direction of the belt-shaped member indicates either one or both ends in the width direction of each belt-shaped member.

In the seventh aspect, at least one widthwise end of the belt-shaped member is folded back, thereby reinforcing the folded-back end of the belt-shaped member that constitutes the handle portion. In addition, by folding back the belt-shaped member in this way, two (or two) belt-shaped members are stacked in the thickness direction, so that the strength of the belt-shaped member can be increased. As a result, in the seventh aspect, it is possible to further suppress stretching and breakage of the handle portion (provide a packaging bag that is less likely to break).

In an eighth aspect of the present invention, the belt-shaped member is open at the other end in the width direction, and the belt-shaped member is arranged so that the other end is positioned on the side of the other belt-shaped member of the two belt-shaped members. It is a packaging bag in which members are arranged. In this specification, the term "the other end is open" indicates a gap in the belt-shaped member formed at the other end in the width direction by folding back the end in the width direction. Furthermore, being positioned on the side of the other belt-like member means that the other open end of at least one of the two belt-like members is not positioned on the side of the handle where fingers or the like are inserted.

In the eighth aspect, since at least one end in the width direction of the belt-shaped member constituting the handle portion is folded back and the other end in the width direction is open, the belt-shaped member itself is easily twisted. Therefore, in the eighth aspect, it is possible to stably hold (or grip) the handle portion formed of the belt-shaped member while increasing the strength of the belt-shaped member.

Further, in the eighth aspect, by arranging one of the two belt-shaped members so that the other widthwise open end of at least one of the two belt-shaped members is positioned on the side of the other belt-shaped member, The other open widthwise end of the belt-like member is not located on the side where fingers or the like of the handle are inserted. As a result, when a finger or the like is inserted into the handle portion, the finger or the like is less likely to be caught by the belt-like member forming the handle portion. Therefore, in the eighth aspect, even when at least one end in the width direction of the belt-shaped member is folded back and the other end in the width direction is open, insertion of a finger or the like into the handle is less likely to be hindered.

A ninth aspect of the present invention is the above-described method for manufacturing a packaging bag, comprising: a gusset forming step of folding the tubular film into a gusset shape to form a pair of gusset portions in the tubular film; a sealing step of sealing the opening of the tubular film to form the sealing portion, and between the gusset forming step and the sealing step, installing a heat shield plate on the gusset portion to prevent heat from The method of manufacturing a packaging bag includes a heat blocking step for blocking conduction, wherein the sealing step joins the belt-shaped member to the gusset portion to form the handle portion.

In this specification, the gusset portion indicates a portion composed of a pair of mountain folds and valley folds formed in the tubular film by folding the tubular film in a gusset shape. Also, installing the heat shielding plate on the gusset means blocking the conduction (or transfer) of heat between a pair of mountain folds formed on the tubular film.

In the ninth aspect, by providing such a heat shielding step between the gusset forming step and the sealing step, the upper portions of the top surface are joined together when the belt-shaped member constituting the handle portion is joined to the top surface. can prevent it from being done. Thus, in the ninth aspect, while forming the top surface of the main body, the handle portion that can be grasped (or gripped) with fingers or the like can be reliably formed on the top surface of the handle portion.

Also, in the sealing process, the band-shaped member is joined to the gusset portion to form the handle portion, so that the formation of the handle portion and the formation of the seal portion can be performed at the same time. Thereby, in the ninth aspect, even when the strip member is joined to the gusset portion to form the handle portion, it is possible to suppress an increase in manufacturing cost of the packaging bag.

According to one aspect of the present invention, it is possible to provide a packaging bag that is easy to hold and hard to break.

It is a figure which shows the packaging bag which concerns on 1st Embodiment of this invention. It is a figure which shows the packaging bag which concerns on the modification of 1st Embodiment. It is the figure which looked at the packaging bag which concerns on 1st Embodiment from the top surface side of a main-body part. It is a figure which shows the top surface vicinity of the main-body part which looked at the packaging bag which concerns on 1st Embodiment from the front side of a main-body part. It is a figure which shows the top surface vicinity of the main-body part which looked at the packaging bag which concerns on 1st Embodiment from the side surface side of a main-body part. 4 is a cross-sectional view taken along line AA of FIG. 3; FIG. FIG. 4 is a diagram showing a state before a finger or the like is inserted into the finger hooking portion of the packaging bag according to the present embodiment; It is a figure which shows the state which inserted the finger|toe etc. in the finger hook part in the packaging bag which concerns on this embodiment. It is a figure which shows the state which grasped the handle part in the packaging bag which concerns on this embodiment. It is a figure which shows the top surface vicinity of the main-body part which looked at the packaging bag which concerns on 2nd Embodiment of this invention from the front side of a main-body part. It is a figure which shows the top surface vicinity of the main-body part which looked at the packaging bag which concerns on 2nd Embodiment from the side surface side of a main-body part. It is the figure which looked the packaging bag which concerns on 3rd Embodiment of this invention from the top surface side of a main-body part. It is a figure which shows the handle part of the packaging bag which concerns on 4th Embodiment of this invention. It is a figure which shows the handle part of the packaging bag which concerns on 5th Embodiment of this invention. It is a figure which shows the handle part of the packaging bag which concerns on the modification of 4th Embodiment. It is a figure which shows the handle part of the packaging bag which concerns on the modification of 5th Embodiment. It is a flow chart which shows a manufacturing method of a packaging bag concerning this embodiment. It is a figure which shows the production line which manufactures the packaging bag which concerns on this embodiment. It is a figure which shows an example of the heat-insulation process in the manufacturing method of the packaging bag which concerns on this embodiment.

Embodiments of the present invention will be described in detail with reference to the drawings. In the description given below, the same reference numerals may be given to parts common to each drawing, and the description thereof may be omitted. In order to facilitate understanding, the scale of each member in each drawing may differ from the actual scale. Further, in each figure, the width direction (horizontal direction) of the packaging bag is the X direction, the height direction (vertical direction) is the Y direction, and the depth direction (front-rear direction) is the Z direction. In addition, in the height direction of the packaging bag, the upper end side of the packaging bag may be referred to as the upper side, and the lower end side of the packaging bag may be referred to as the lower side.

FIG. 1 is a diagram showing a packaging bag 100 according to a first embodiment of the invention. FIG. 2 is a diagram showing a packaging bag 100 according to a modified example of the first embodiment. FIG. 3 is a view of the packaging bag according to the first embodiment as viewed from the top surface side of the main body. FIG. 4 is a diagram showing the vicinity of the top surface of the main body when the packaging bag according to the first embodiment is viewed from the front side of the main body. FIG. 5 is a diagram showing the vicinity of the top surface of the main body when the packaging bag according to the first embodiment is viewed from the side of the main body. 6 is a cross-sectional view taken along the line AA of FIG. 3. FIG.

1 and 2, the packaging bag 100 includes a body portion 10, a seal portion 20, and a handle portion 30. As shown in FIGS. The packaging bag 100 is an example of the packaging bag of the present invention. An example.

The body portion 10 constitutes the body (bag body) of the packaging bag 100 in which the object T to be packaged is accommodated. The body portion 10 can be formed of a resin film (hereinafter referred to as a resin film) or the like. The body portion 10 has a structure in which the resin film is formed into a tubular shape by side seals, and the tubular resin film (hereinafter referred to as a tubular film) is folded into a gusset shape (FIGS. 1 and 2). reference).

Here, folding in a gusset shape means that the peripheral surface of the tubular film TF, which will be described later, is folded inward in the radial direction to form a pair of mountain fold (first fold GF1) and valley fold (second fold GF2). (see FIGS. 18 and 19). Further, the tubular film TF folded in a gusset shape constitutes the main body portion 10 in a state in which the opening is sealed with a seal portion 20 which will be described later.

The material of the resin film forming the main body 10 is not particularly limited, but resins such as polyethylene (PE), a laminate of PE-ethylene vinyl alcohol copolymer (EVOH)-PE (PE/EVOH/PE), etc. A film can be used. The thickness of the resin film is not particularly limited. For example, when PE or PE/EVOH/PE is used as the resin film, the thickness of the resin film can be 10 μm or more and 70 μm or less, preferably 15 μm or more and 60 μm or less. , more preferably 20 μm or more and 50 μm or less.

The body portion 10 includes a top surface 11, a bottom surface 12 facing the top surface 11 and the body portion 10 in the height direction (Y direction), a front surface 13 continuous with the top surface 11 and the bottom surface 12, and the top surface 11 And a back surface 14 that is continuous with the bottom surface 12 and faces the front surface 13 in the depth direction (Z direction), and a pair of top surface 11, the bottom surface 12, the front surface 13, and the back surface 14 that are continuous and face the width direction (X direction). It has sides 15,16.

Furthermore, the top surface 11 has an upper top surface 11A and a lower top surface 11B that partially overlaps with the top surface upper portion 11A in a state where the object T is accommodated in the main body portion 10 . The top surface upper portion 11A is continuous with the front surface 13 and the back surface 14 of the main body portion 10, and the top surface lower portion 11B is continuous with the top surface upper portion 11A and the pair of side surfaces 15 and 16 of the main body portion 10.

In addition, in order to facilitate understanding of the relationship between the top surface upper portion 11A and the top surface lower portion 11B, in FIGS. It is shown. In addition, the top surface upper portion 11A has a folded portion having substantially the same shape as the top surface lower portion 11B at a portion that is continuous with the top surface lower portion 11B. omitted.

The main body 10 accommodates 12 rolls of toilet paper as an example of the objects to be wrapped T (see FIGS. 1 and 2). In addition, the form of the object to be packaged is not limited to a roll shape, and may be accommodated in other forms such as a layered form. In addition, the object to be wrapped in the main body 10 is not limited to toilet paper, but can contain items such as kitchen paper, paper towels, paper diapers for babies or nursing care, and sanitary napkins.

Furthermore, in the example shown in FIG. 1, 12 rolls of toilet paper (objects to be wrapped T) are accommodated in the main body 10 in a state in which four rolls are arranged in one row and stacked in three stages. there is Moreover, in the example shown in FIG. 2, 12 pieces of toilet paper (objects to be wrapped T) are accommodated in the main body 10 in a state in which 12 pieces are arranged in one row. The number of articles accommodated in the body portion 10 is not limited, and may be one, or may be plural as shown in FIGS. 1 and 2 . Moreover, the arrangement of the objects to be packaged housed in the body portion 10 is not limited to the arrangement shown in FIGS. 1 and 2 .

The seal portion 20 seals the top surface 11 of the body portion 10 . Specifically, the sealing portion 20 is configured to seal the opening of the tubular film TF, and is formed on the top surface upper portion 11A. The sealing portion 20 can be configured by heat sealing, bonding with an adhesive, pressure-sensitive adhesive, or the like. When the seal portion 20 is formed by heat sealing, for example, a method (stamping method) of embossing the resin film folded into the gusset shape with a hot plate can be used.

As shown in FIGS. 1 and 2, the handle portion 30 is formed on the top surface 11 of the main body portion 10, and is a portion (handle) for gripping or gripping the packaging bag 100 with fingers or the like or palm (hereinafter referred to as fingers or the like). or handle). The material of the handle portion (belt-shaped member) 30 is not particularly limited, and a resin film or the like can be used like the main body portion 10 .

The shape of the handle portion 30 is not particularly limited, but for example, the outline shape of the handle portion 30 when viewed in the thickness direction (Y direction) can be a quadrangle such as a rectangle (see FIG. 3). Specifically, as shown in FIGS. 1 to 6, the handle 30 can be made of a band-shaped member. The size of the handle portion (belt-shaped member) 30 is not particularly limited, but can be determined by the size of the top surface 11 of the body portion 10, the range of the seal portion 20, and the like.

When the shape of the band-shaped member that constitutes the handle portion 30 is rectangular, the size of the handle portion 30 may be such that the length of the band-shaped member in the longitudinal direction (X direction) is 150 mm or more and 500 mm or less. preferably 160 mm or more and 400 mm or less, more preferably 170 mm or more and 300 mm or less. In addition, the width of the strip member in the width direction (Z direction) can be 35 mm or more and 150 mm or less, preferably 40 mm or more and 130 mm or less, more preferably 45 mm or more and 100 mm or less.

A belt-shaped member that constitutes the handle portion 30 is formed on the top surface 11 (upper portion 11A of the top surface) of the main body portion 10 . The manner in which the handle portion (belt-shaped member) 30 is joined to the top surface 11 is not particularly limited, but heat sealing, adhesion, or the like can be used as in the formation of the seal portion 20 described above.

In this embodiment, the handle portion 30 is composed of two belt-shaped members 31 and 32 arranged in a direction (Z direction) intersecting the longitudinal direction (X direction) (see FIGS. 1 to 6). Here, the direction (Z direction) intersecting with the longitudinal direction (X direction) is the direction along the direction substantially orthogonal to the longitudinal direction (X direction) of the belt-shaped members 31 and 32, or the belt-shaped members 31 and 32 The width direction (Z direction) of the belt-like members 31 and 32 joined to 11A is shown.

Both ends 31A and 31B in the longitudinal direction (X direction) of the belt-shaped member 31 constituting the handle portion 30 are part of the top surface upper portion 11A overlapping the top surface lower portion 11B (the portion surrounded by the triangle shown in FIG. 3). ) is joined to OL1. In addition, both ends 32A and 32B in the longitudinal direction (X direction) of the belt-shaped member 32 are joined to a portion (a portion surrounded by a triangle shown in FIG. 3) OL2 of the top surface upper portion 11A overlapping the top surface lower portion 11B. ing. That is, joint portions 40 are formed between the top surface upper portion 11A and both ends 31A and 31B of the belt-shaped member 31 and both ends 32A and 32B of the belt-shaped member 32 (see FIG. 3).

Specifically, both ends 31A, 31B, 32A, and 32B in the longitudinal direction (X direction) of the belt-shaped members 31 and 32 are aligned with both ends TE1 and TE2 of the top surface 11 in the width direction (X direction) of the main body 10. It is joined (see FIGS. 3-5). Here, the width direction (X direction) of the body portion 10 indicates the direction in which a pair of side surfaces 15 and 16 that are continuous with the top surface lower portion 11B face each other (see FIGS. 1 and 3).

That is, joint portions 40 (first joint portions 41) are formed between both end portions 31A and 31B of the belt-shaped member 31 and both end portions TE1 and TE2 of the top surface 11 (top surface upper portion 11A). In addition, joint portions 40 (second joint portions 42) are formed between both end portions 32A and 32B of the belt-shaped member 32 and both end portions TE1 and TE2 of the top surface 11 (top surface upper portion 11A) (Fig. 3 (See FIG. 5).

In this embodiment, one end 31A, 32A in the longitudinal direction (X direction) of the belt-shaped members 31, 32 is joined to one end TE1 of the top surface 11 in the width direction (X direction) of the main body 10. , the other ends 31B and 32B of the belt-like members 31 and 32 in the longitudinal direction (X direction) are joined to the other end TE2 of the top surface 11 in the width direction (X direction) of the main body 10 (FIG. 3 to 5).

Further, in the present embodiment, the handle portion 30 is arranged so that the belt-shaped members 31 and 32 overlap the top surface upper portion 11A (see FIGS. 1 to 6). Here, the belt-shaped members 31 and 32 overlap the top surface upper portion 11A means that the belt-shaped members 31 and 32 face the top surface upper portion 11A of the top surface 11 .

7 to 9 are diagrams showing how the packaging bag 100 according to this embodiment is used. Here, the effects of the present invention according to this embodiment will be described with reference to FIGS. 7 to 9. FIG.

In the present embodiment, as described above, both ends 31A and 31B in the longitudinal direction (X direction) of the belt-shaped member 31 are joined to the portion OL1 of the upper top surface 11A that overlaps the lower top surface 11B. Both ends 32A and 32B of the belt-shaped member 32 in the longitudinal direction (X direction) are joined to a portion OL2 of the top surface upper portion 11A overlapping the top surface lower portion 11B. Therefore, in the present embodiment, the belt-shaped handle portion 30 can be formed on the top surface 11 of the main body portion 10 (see FIG. 7).

As a result, in the present embodiment, a finger or the like P can be easily hooked (inserted or inserted) into the handle portion 30 (see FIG. 8). Moreover, in this embodiment, since the handle portion 30 is formed of the belt-shaped members 31 and 32, the handle portion 30 can be easily grasped (or gripped) with fingers or the like P (see FIG. 9). Therefore, according to this embodiment, it is possible to provide the packaging bag 100 that is easy to hold.

In addition, in the present embodiment, the handle portion 30 composed of the belt-shaped members 31 and 32 can be easily grasped (or gripped) with the fingers P, etc., so that the fingers P may be tightened or the fingers P may become painful. is suppressed. Therefore, according to the present embodiment, it is possible to relieve (or alleviate) the load applied to P such as fingers when gripping the handle 30 (see FIG. 9). Furthermore, in the present embodiment, the load applied to the fingers or the like P when gripping the handle portion 30 is alleviated, so that when the packaging bag 100 containing the object to be packaged T is carried, the packaging bag 100 is damaged. (See Figure 9).

In the present embodiment, as described above, both ends 31A, 31B, 32A, and 32B in the longitudinal direction (X direction) of the belt-like members 31 and 32 are both ends of the top surface 11 in the width direction (X direction) of the main body 10. By being joined to TE1 and TE2, it is possible to increase the portion that can be grasped (or gripped) with fingers or the like P as the handle portion 30 (see FIGS. 8 and 9).

In other words, base portions 31C and 32C (portions of strip members 31 and 32 excluding both ends 31A, 31B, 32A and 32B) of strip members 31 and 32 joined to top surface upper portion 11A in the longitudinal direction (X direction) are growing. As a result, in the present embodiment, it becomes easier to put (or insert) the finger P on the handle 30, and the handle 30 can be more easily grasped (or gripped) with the finger P ( 8 and 9).

In the present embodiment, as described above, the belt-shaped members 31 and 32 that constitute the handle portion 30 overlap the top surface 11 (upper portion 11A of the top surface). The belt-like members 31 and 32 that constitute the . In other words, it becomes difficult for the handle portion 30 to linearly contact the finger P or the like. Thereby, in this embodiment, it is possible to provide the packaging bag 100 that is easier to hold.

In addition, in the present embodiment, the band-shaped members 31 and 32 that constitute the handle portion 30 are likely to come into contact with the fingers P or the like in a planar manner, so that the fingers or the like P are tightened by the handle portion 30, or the fingers P are tightened. can be further suppressed. Therefore, according to the present embodiment, the load applied to P such as fingers when gripping the handle 30 is further reduced, and the packaging bag 100 is less likely to be damaged.

In the present embodiment, as described above, the handle portion 30 is composed of the two belt-like members 31 and 32, so that the handle portion 30 is divided into a plurality of members. In such a configuration, when the handle 30 is gripped (gripped) with the fingers P, the handle 30 is twisted (or partially overlapped) according to the state of the fingers P. In other words, the elastic member deforms (or fits) in a familiar shape to P such as fingers. Therefore, according to the present embodiment, the handle portion 30 can be stably grasped (or gripped).

FIG. 10 is a view showing the vicinity of the top surface 11 of the body portion 10 when the packaging bag 100 according to the second embodiment of the present invention is viewed from the front side of the body portion 10. As shown in FIG. FIG. 11 is a diagram showing the vicinity of the top surface 11 of the main body 10 when the packaging bag 100 according to the second embodiment is viewed from the side (right side) of the main body 10 . 10 and 11, parts common to the first embodiment are given the same reference numerals, and explanations thereof are omitted.

In the packaging bag 100 according to the second embodiment, as shown in FIGS. 10 and 11, at least one end 31A, 31B, 32A, 32B of both ends in the longitudinal direction (X direction) of the strip members 31, 32 is , are joined in a folded state. Here, at least one end of both ends in the longitudinal direction (X direction) of the belt-shaped members 31 and 32 is either both ends or either end in the longitudinal direction (X direction) of the belt-shaped members 31 and 32 . indicate.

In this embodiment, both ends 31A and 31B in the longitudinal direction (X direction) of the belt-like member 31 are folded back and joined together. Both ends 32A and 32B in the longitudinal direction (X direction) of the belt-like member 32 are folded back and joined together (see FIGS. 10 and 11).

In the present embodiment, both ends 31A and 31B of the strip member 31 and both folded ends (both ends) are folded back and joined together. 31A, 31B folded back) 31D, 31E are joined to the top surface 11, and both ends 32A, 32B and both folded ends (not shown folded ends and folded ends 32E) of the belt-shaped member 32 are joined to the top surface 11. , and the joint portion 40 of the belt-like members 31 and 32 is reinforced (see FIGS. 10 and 11).

In the present embodiment, the ends 31A and 31B of the belt-shaped member 31 are joined to the top surface upper portion 11A in a folded state, so that the ends 31A and 31B of the belt-shaped member 31 and both ends TE1 of the top surface upper portion 11A , TE2 can be reinforced. In addition, since the ends 32A and 32B of the belt-shaped member 32 are joined to the top surface upper portion 11A in a folded state, the ends 32A and 32B of the belt-shaped member 32 and the both ends TE1 and TE2 of the top surface upper portion 11A are separated. The joint 40 (second joint 42) between the can be reinforced. Thereby, in this embodiment, it is possible to prevent the handle portion 30 from being broken from the top surface 11 (see FIGS. 10 and 11).

FIG. 12 is a view of the packaging bag 100 according to the third embodiment of the present invention as viewed from the top surface 11 side of the body portion 10. FIG. In addition, in FIG. 12, the parts common to the first embodiment are given the same reference numerals, and descriptions thereof are omitted. In the packaging bag 100 according to the third embodiment, at least one end in the width direction (Z direction) of the strip member 31 curves toward the other end in the width direction (Z direction). Moreover, at least one end in the width direction (Z direction) of the belt-shaped member 32 curves toward the other end in the width direction (Z direction).

Here, at least one end in the width direction (Z direction) of the belt-shaped member 31 indicates both ends 31F, 31G or either end in the width direction (Z direction) of the belt-shaped member 31 . Moreover, at least one end in the width direction (Z direction) of the belt-shaped member 32 indicates both ends 32F, 32G or one end in the width direction (Z direction) of the belt-shaped member 32 .

Further, bending toward the other end in the width direction (Z direction) means that in the belt-shaped member 31, one end 31F in the width direction (Z direction) of the belt-shaped member 31 is toward the other end 31G in the width direction (Z direction). Shows concave curvature. That is, the base portion 31C of the belt-shaped member 31 constitutes the curved portion (or recessed portion) CP1. In other words, the width of the base portion 31C with respect to the width of the both end portions 31A and 31B of the strip member 31 becomes narrower from the both end portions 31A and 31B toward the central portion of the strip member 31 .

Also, in the belt-shaped member 32, one end 32F in the width direction (Z direction) of the belt-shaped member 32 is concavely curved toward the other end 32G in the width direction (Z direction). That is, the base portion 32C of the belt-shaped member 32 constitutes the curved portion (or recessed portion) CP2. In other words, the width of the base portion 32C with respect to the width of the both end portions 32A, 32B of the strip-shaped member 32 becomes narrower from the both end portions 32A, 32B toward the central portion of the strip-shaped member 32 .

In the present embodiment, one end 31F in the width direction (Z direction) of the belt-shaped member 31 is concavely curved toward the other end 31G in the width direction (Z direction). Also, one end 32F in the width direction (Z direction) of the belt-shaped member 32 is concavely curved toward the other end 32G in the width direction (Z direction). Note that the configuration in which one end in the width direction (Z direction) of the belt-shaped members 31 and 32 is curved is not limited to this embodiment.

In the present embodiment, since at least one end 31F, 32F in the width direction (Z direction) of the belt-shaped members 31, 32 is curved in this way, the width direction (Z direction) end 31F, 32F of the curved belt-shaped members 31, 32 is curved. It becomes easier to insert a finger or the like P from the side (see FIG. 12). In addition, in the belt-shaped members 31 and 32 in which the ends 31F and 32F in the width direction (Z direction) are curved in this way, the width of the belt-shaped members 31 and 32 in the width direction (Z direction) extends from both ends of the belt-shaped members to the central portion. Since it becomes shorter toward the end, the handle portion 30 made up of such band-shaped members 31 and 32 is easy to grasp (see FIG. 12). Therefore, the packaging bag 100 of this embodiment is easier to hold.

13A and 13B are diagrams showing the handle portion 30 of the packaging bag 100 according to the fourth embodiment of the present invention. FIG. FIG. 14 is a diagram showing the handle portion 30 of the packaging bag 100 according to the fifth embodiment of the invention. 13 and 14, parts common to the first embodiment (FIG. 6) are denoted by the same reference numerals, and descriptions thereof are omitted.

In the packaging bag 100 according to the fourth embodiment, at least one end in the width direction (Z direction) of at least one of the two strip members 31 and 32 is folded back (see FIG. 13). Also, in the packaging bag 100 according to the fifth embodiment, at least one end of the two strip members 31 and 32 in the width direction (Z direction) is folded back (Fig. 14).

Here, at least one strip-shaped member of the two strip-shaped members 31 and 32 indicates both strip-shaped members or either strip-shaped member of the two strip-shaped members 31 and 32 . In addition, at least one end in the width direction (Z direction) of the belt-shaped member 31 indicates one end 31F and/or 31G in the width direction (Z direction) of the belt-shaped member 31 . In addition, at least one end in the width direction (Z direction) of the belt-shaped member 32 indicates one end 32F and/or 32G in the width direction (Z direction) of the belt-shaped member 32 .

In the packaging bag 100 according to the fourth embodiment, one end 31F of the strip member 31 in the width direction (Z direction) is folded back, and one end 32F of the strip member 32 in the width direction (Z direction) is folded back (Fig. 13). In addition, in the packaging bag 100 according to the fifth embodiment, both ends 31F and 31G in the width direction (Z direction) of the belt-shaped member 31 are folded back, and both ends 32F and 32F in the width direction (Z direction) of the belt-shaped member 32 are folded back. 32G is folded back (see FIG. 14).

In the fourth embodiment, the ends 31F and 32F of the belt-like members 31 and 32 in the width direction (Z direction) are folded back, and the folded ends 31F of the belt-like members 31 and 32 forming the handle portion 30 are folded back. 32F is reinforced (see FIG. 13). Further, in the fifth embodiment, both ends 31F, 32F, 31G, and 32G of the strip members 31 and 32 in the width direction (Z direction) are folded back so that both ends 31F of the strip members 31 and 32 constituting the handle portion 30 are folded back. , 32F, 31G, 32G are reinforced (see FIG. 14).

In addition, in the fourth embodiment, the belt-shaped members 31 and 32 are folded back as described above, so that the belt-shaped members 31 and 32 overlap each other in the thickness direction (Y direction). strength can be increased (see FIG. 13). In addition, in the fifth embodiment, the belt-shaped members 31 and 32 are folded back as described above, so that the belt-shaped members 31 and 32 overlap three sheets in the thickness direction (Y direction). can be further enhanced (see FIG. 14).

As a result, in the packaging bag 100 according to the fourth embodiment, the handle portion 30 is further suppressed from being stretched or broken (see FIG. 13). Moreover, the packaging bag 100 according to the fifth embodiment further suppresses the extension and breakage of the handle portion 30 (see FIG. 14).

FIG. 15 is a diagram showing a handle portion 30 of a packaging bag 100 according to a modified example of the fourth embodiment. FIG. 16 is a diagram showing the handle portion 30 of the packaging bag 100 according to the modified example of the fifth embodiment. 15 and 16, parts common to the first embodiment (FIG. 6) are denoted by the same reference numerals, and description thereof is omitted.

In both the packaging bag 100 according to the fourth embodiment and the modified example of the fourth embodiment described above, the belt-shaped member 31 or 32 is open at the other ends 31G and 32G in the width direction (Z direction). That is, the other ends 31G and 32G in the width direction (Z direction) form open portions OP1 and OP2 (see FIGS. 13 and 15).

Moreover, in both the packaging bag 100 according to the fifth embodiment and the modified example of the fifth embodiment, the belt-shaped member 31 or 32 has the other ends 31G and 32G in the width direction (Z direction) opened. That is, open portions OP1 and OP2 are formed at the other ends 31G and 32G in the width direction (Z direction) (see FIGS. 14 and 16).

Here, the opening of the other ends 31G and 32G of the strip members 31 and 32 means that the one ends 31F and 32F of the strip members 31 and 32 in the width direction (Z direction) are folded back. It shows that gaps are formed at the ends 31G, 32G (see FIGS. 13-16).

In the fourth embodiment, the modification of the fourth embodiment, the fifth embodiment, and the modification of the fifth embodiment, the width direction (Z direction) of the belt-like members 31 and 32 constituting the handle portion 30 is Since one ends 31F and 32F are folded back and the other ends 31G and 32G in the width direction (Z direction) are open, the strip members 31 and 32 themselves are easily twisted (see FIGS. 13 to 16). Therefore, in these embodiments, it is possible to stably grasp (or grip) the handle portion 30 formed by the strip-shaped members 31 and 32 while enhancing the strength of the strip-shaped members 31 and 32 .

Further, among the embodiments in which the other ends 31G and 32G of the belt-shaped members 31 and 32 are open, in the modification of the fourth embodiment and the modification of the fifth embodiment, the other open end 31G of the belt-shaped member 31 is belt-shaped. A belt-shaped member 31 is arranged so as to be positioned on the member 32 side. Further, the belt-shaped member 32 is arranged so that the other open end 32G of the belt-shaped member 32 is located on the belt-shaped member 31 side (see FIGS. 15 and 16).

In other words, in the modified example of the fourth embodiment and the modified example of the fifth embodiment, the open other end 31G of the belt-shaped member 31 is the side of the handle portion 30 into which the fingers P are inserted (the front surface of the body portion 10). 13 side). Also, the other open end 32G of the belt-like member 32 is not located on the side of the handle portion 30 into which the fingers or the like P are inserted (the back surface 14 side of the main body portion 10). (See FIGS. 15 and 16)

As a result, in the modification of the fourth embodiment and the modification of the fifth embodiment, when inserting a finger or the like P into the handle portion 30 , the fingers or the like P are attached to the band-shaped members 31 and 32 constituting the handle portion 30 . are not caught on the other open ends 31G and 32G of the belt-like members 31 and 32.例文帳に追加Therefore, in the modified example of the fourth embodiment and the modified example of the fifth embodiment, one ends 31F and 32F in the width direction (Z direction) of the belt-like members 31 and 32 are folded back and the other ends in the width direction (Z direction) are folded back. Even when 31G and 32G are opened, the insertion of fingers or the like into the handle portion 30 is less likely to be hindered (see FIGS. 15 and 16).

FIG. 17 is a flow chart showing a method of manufacturing a packaging bag according to this embodiment. FIG. 18 is a diagram showing a manufacturing line 200 for manufacturing packaging bags according to this embodiment. FIG. 19 is a diagram showing an example of a heat shielding step in the method of manufacturing a packaging bag according to this embodiment. Here, a method for manufacturing a packaging bag according to an embodiment of the present invention will be described with reference to FIGS. 17 to 19. FIG. 18 and 19, parts common to the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

As shown in FIG. 17, the manufacturing method of the packaging bag according to the present embodiment includes a raw film unloading step ST11, a cylindrical film forming step ST12, a gusset forming step ST13, a heat blocking step ST14, a sealing step ST15, and a gusset sheet. It has a winding step ST16. The packaging bag of the present embodiment described above can be manufactured by the method of manufacturing the packaging bag of the present embodiment. Such a packaging bag manufacturing method is an example of a packaging bag manufacturing method according to the present invention.

In the raw film unloading step ST11, the raw film RF, which is the material of the packaging bag 100, is unloaded into the manufacturing process of the packaging bag 100 in the production line 200 shown in FIG. Specifically, in the unloading section 110 of the production line 200 , the raw film RF is unloaded to the raw film conveying section 120 from the unloading roll 111 on which the raw film RF is wound. Then, the original film RF is conveyed in the conveying direction MD by the original film conveying section 120 .

In the tubular film forming step ST12, as shown in FIG. 18, the original film RF conveyed from the original film conveying section 120 is formed into a tubular shape to form a tubular film TF. Specifically, in the cylindrical film forming unit 130, the raw film RF is folded in half in a direction (width direction) substantially orthogonal to the transport direction MD, and both ends of the raw film RF are bonded together by heat sealing ( side seal SS). The formed tubular film TF is transported in the transport direction MD by the tubular film transport section 140 .

In the gusset forming step ST13, as shown in FIG. 18, the tubular film TF conveyed from the tubular film conveying section 140 is folded into a gusset shape to form a gusset sheet (hereinafter referred to as a gusset sheet) GS. Specifically, folding plates 151 and 152 are brought into contact with both edges of the tubular film TF in the width direction in the gusset forming section 150, so that the tubular film TF is folded into a gusset shape, and the tubular film TF is folded into a pair. form the gusset of the

In the gusset forming portion 150, the material of the folding plates 151 and 152 is not particularly limited, and for example, a rigid member such as stainless steel can be used. The formed gusset sheet GS is formed with a pair of first folds GF1 at both ends in the width direction and a pair of second folds GF2 inside (see FIGS. 18 and 19).

The pair of first folds GF1 and the pair of second folds GF2 constitute gusset portions formed in the tubular film TF. The tubular film TF having the pair of gusset portions constitutes the gusset sheet GS. The formed gusset sheet GS is transported in the transport direction MD by the gusset sheet transport unit 160 .

In the heat blocking step ST14, as shown in FIG. 18, the gusset sheet GS conveyed from the gusset sheet conveying section 160 is blocked from conducting heat. Specifically, in the heat shielding portion 170, a pair of heat shielding plates 171 and 172 are installed on the gusset portions (first fold GF1 and second fold GF2) of the tubular film TF constituting the gusset sheet GS ( 18 and 19). Here, installing the heat shield plates 171 and 172 on the gusset portions (the first fold GF1 and the second fold GF2) means that heat is cut off between the pair of first folds GF1 formed in the tubular film TF. indicate that

The heat shield plates 171 and 172 can be made of, for example, ceramic plates, glass plates, metal plates, or the like. It should be noted that the heat shield is preferably made of a material that has low thermal conductivity and is not melted or deformed by heat.

In the sealing step ST15, as shown in FIGS. 18 and 19, the gusset sheet GS whose heat conduction is blocked by the heat shielding portion 170 is heat-sealed. Specifically, the seal forming part 180 seals the opening of the tubular film TF to form the seal part 20 separating each packaging bag (semi-finished product HS) in the gusset sheet GS. Thus, in this embodiment, the heat shielding step ST14 is provided between the gusset forming step ST13 and the sealing step ST15.

In the sealing step ST15, as shown in FIGS. 18 and 19, the strip members 31 and 32 are joined to the gusset portion at the same time as the seal portion 20 is formed. Specifically, both ends 31A and 31B of the belt-shaped member 31 and both ends 32A and 32B of the belt-shaped member 32 are joined to a pair of first folds GF1 where conduction of heat is interrupted. It should be noted that the strip members 31 and 32 can be joined by heat sealing in the same manner as the formation of the seal portion 20 .

In the gusset sheet winding step ST<b>16 , the gusset sheet GS (semi-finished product HS) on which the seal portion 20 is formed is wound around the winding roll 191 by the winding section 190 . The gusset sheet GS (semi-finished product HS) wound around the take-up roll 191 is managed so that it can be stored, and if necessary, at predetermined intervals (for example, along the seal portion 20 of the semi-finished product HS). The packaging bag 100 is obtained by cutting. The gusset sheet GS (half-finished product HS) may be cut at predetermined intervals as it is without being wound up by the winding unit 190 and handled as each packaging bag 100 .

In the method of manufacturing the packaging bag according to the present embodiment, the heat shielding step ST14 is provided between the gusset forming step ST13 and the sealing step ST15, so that the belt-shaped members 31 and 32 forming the handle portion 30 are separated from each other. When joining to the top surface 11, it is possible to prevent the top surface upper portions 11A from being joined to each other. As a result, in the present embodiment, while the top surface 11 of the main body portion 10 is formed, the handle portion 30 that can be grasped (or gripped) with fingers or the like P is reliably formed on the top surface 11 of the handle portion 30. can do.

Further, in the sealing step ST15, the belt-shaped members 31 and 32 are joined to the gusset portions (the pair of first folds GF1) to form the handle portion 30, thereby forming the handle portion 30 and forming the seal portion 20. can be done simultaneously. As a result, in the present embodiment, even when the belt-shaped members 31 and 32 are joined to the top surface (upper portion of the top surface) of the main body to form the handle portion 30, it is possible to suppress an increase in manufacturing cost of the packaging bag 100. can be done.

EXAMPLES The present invention will now be described in more detail with reference to examples. Examples and comparative examples were evaluated by the following tests.

[Test piece (packaging bag)]
A packaging bag 100 was used as a specimen. The packaging bag 100 was manufactured by the manufacturing method of the packaging bag shown in FIG. Specifically, a tubular film TF is formed from a polyethylene resin film (thickness: about 25 μm), and the tubular film TF is folded into a gusset to form a gusset portion (first fold GF1 and second fold GF2). is formed, and the end (opening) of the gusset sheet GS (cylindrical film TF having a gusset portion) is heat-sealed to form a seal portion 20 on the top surface 11 of the main body portion 10 Then, belt-shaped members 31 and 32 are joined to the first fold GF1 of the gusset portion excluding the seal portion 20, and the handle portion 30 is formed on the top surface 11 (upper portion 11A of the top surface) of the main body portion 10 to package. Got 100 bags. The belt-like members 31 and 32 constituting the handle portion 30 are made of polyethylene with a thickness of about 60 μm. Z direction) was about 50 mm. 12 pieces of roll-shaped toilet paper T (“Elleair Toilet Tissue 60m Single (147g/roll)” manufactured by Daio Paper Co., Ltd.) are arranged in a row in the body portion 10 of the obtained packaging bag 100. were stored in a state of being stacked in three stages (see Fig. 1).

[Finger insertion test]
As shown in FIGS. 7 to 9, the user puts the index finger, middle finger, ring finger, and little finger of the right hand on the handle portion 30 of the test piece (packaging bag 100) to grasp the handle portion 30 of the packaging bag 100. The difficulty of holding (or gripping) was evaluated in the following five grades. In this case, the results of the test conducted by 10 people for each example and comparative example were scored, and the average value was calculated. In addition, when the average value was 4.0 or more, the result of the finger insertion test was evaluated as good.
5 points: No difficulty in holding at all 4 points: Very little difficulty in holding 3 points: Little difficulty in holding 2 points: Significant difficulty in holding 1 point: Very large difficulty in holding feel

[Pendulum test]
A pendulum test was performed on the specimen (packaging bag 100). In the pendulum test, similarly to the finger-insertion test, the handle portion 30 of the specimen (packaging bag 100) was gripped (or gripped), and the packing bag 100 was reciprocated 10 times in the range of 180° like a pendulum. At this time, the durability of the packaging bag 100 was evaluated according to the following criteria. In this case, it was carried out five times for each example and comparative example. In the case of ◯, the result of the pendulum test was evaluated as good in the case of ◯, and as poor in the case of x.
○: Damage could not be confirmed once out of 5 times ×: Damage was confirmed 1 time or more out of 5 times

[Finger hanging test]
After the above pendulum test was performed once, the degree of tightening to the finger P of one user was evaluated in the following five stages. In this case, the results of tests conducted by 10 users for each example and comparative example were scored, and the average value was calculated. In addition, when the average value was 4.0 or more, the result of the finger hooking test was evaluated as good.
5 points: no tightening on fingers at all 4 points: very little tightening on fingers 3 points: little tightening on fingers 2 points: large tightening on fingers 1 point: very large tightening on fingers

Examples and comparative examples are described below.

[Example 1]
The handle portion 30 is composed of two rectangular belt-shaped members 31 and 32, and the belt-shaped members 31 and 32 are arranged so as to overlap the top surface upper portion 11A (see FIGS. 1 to 6). The belt-shaped members 31 and 32 are configured such that both ends 31A, 31B, 32A and 32B in the longitudinal direction (X direction) are connected to both ends TE1 and TE2 of the top surface 11 (upper portion 11A of the top surface) in the width direction (X direction) of the main body 10. (see FIGS. 1 and 3 to 6). The produced packaging bag 100 was subjected to a finger insertion test, a pendulum test, and a finger hanging test, and evaluated. Table 1 shows the results.

[Example 2]
Both ends 31A and 31B in the longitudinal direction (X direction) of the belt-like member 31 are folded back and joined (portions (folded ends) 31D and 31E folded back in the longitudinal direction (X direction) of the belt-like member 31 are joined. length of about 10 mm), and both ends 32A and 32B in the longitudinal direction (X direction) of the belt-shaped member 32 are folded back and joined together (the portion folded back in the longitudinal direction (X direction) of the belt-shaped member 32 ( It was fabricated and evaluated in the same manner as in Example 1, except that the length of the folded end portion 32E) (partially not shown) was set to about 10 mm (see FIGS. 10 and 11). Table 1 shows the results.

[Example 3]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction) (the minimum width in the width direction (Z direction) of the base portion 31C of the belt-shaped member 31 is 30 mm), one end 32F in the width direction (Z direction) of the belt-shaped member 32 curves concavely toward the other end 32G in the width direction (Z direction) (the width direction (Z direction) of the base 32C of the belt-shaped member 32 ) was set to about 30 mm) (see FIG. 12), and was produced and evaluated in the same manner as in Example 1. Table 1 shows the results.

[Example 4]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 2 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 1 shows the results.

[Example 5]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is folded back and the other end 31G is opened, and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is folded back and the other end 32G is opened ( It was produced and evaluated in the same manner as in Example 1, except that the handle portion was folded once, and the opening portion faced outward (see FIG. 13). Table 1 shows the results.

[Example 6]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is folded back and the other end 31G is opened, and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is folded back and the other end 32G is opened ( It was produced and evaluated in the same manner as in Example 2, except that the handle portion was folded once, and the open portion faces outward (see FIG. 13). Table 1 shows the results.

[Example 7]
The other open end 31G of the belt-shaped member 31 is positioned on the belt-shaped member 32 side, and the other open end 32G of the belt-shaped member 32 is positioned on the belt-shaped member 31 side (handle part folded once, open part folded) It was produced and evaluated in the same manner as in Example 5, except that the direction was inward (see FIG. 15). Table 1 shows the results.

[Example 8]
The other open end 31G of the belt-shaped member 31 is positioned on the belt-shaped member 32 side, and the other open end 32G of the belt-shaped member 32 is positioned on the belt-shaped member 31 side (handle part folded once, open part folded) It was produced and evaluated in the same manner as in Example 6, except that the direction was inward (see FIG. 15). Table 1 shows the results.

[Example 9]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 5 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 2 shows the results.

[Example 10]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 6 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 2 shows the results.

[Example 11]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 7 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 2 shows the results.

[Example 12]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 8 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIGS. 10 to 12 and FIG. 15). Table 2 shows the results.

[Example 13]
Both ends 31F and 31G in the width direction (Z direction) of the strip member 31 are folded back, the other end 31G is opened, and both ends 32F and 32G in the width direction (Z direction) of the strip member 32 are folded back, and the other end 32G is opened. It was produced and evaluated in the same manner as in Example 5 except that the handle portion was folded twice (see FIG. 14). Table 2 shows the results.

[Example 14]
Both ends 31F and 31G in the width direction (Z direction) of the strip member 31 are folded back, the other end 31G is opened, and both ends 32F and 32G in the width direction (Z direction) of the strip member 32 are folded back, and the other end 32G is opened. It was produced and evaluated in the same manner as in Example 6 except that the handle portion was folded twice (see FIG. 14). Table 2 shows the results.

[Example 15]
Both ends 31F and 31G in the width direction (Z direction) of the strip member 31 are folded back, the other end 31G is opened, and both ends 32F and 32G in the width direction (Z direction) of the strip member 32 are folded back, and the other end 32G is opened. It was produced and evaluated in the same manner as in Example 7 except that the handle portion was folded twice (see FIG. 16). Table 2 shows the results.

[Example 16]
Both ends 31F and 31G in the width direction (Z direction) of the strip member 31 are folded back, the other end 31G is opened, and both ends 32F and 32G in the width direction (Z direction) of the strip member 32 are folded back, and the other end 32G is opened. It was produced and evaluated in the same manner as in Example 8 except that the handle portion was folded twice (see FIG. 16). Table 2 shows the results.

[Example 17]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 13 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 3 shows the results.

[Example 18]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 14 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 3 shows the results.

[Example 19]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 15 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 3 shows the results.

[Example 20]
One end 31F in the width direction (Z direction) of the belt-shaped member 31 is curved concavely toward the other end 31G in the width direction (Z direction), and one end 32F in the width direction (Z direction) of the belt-shaped member 32 is curved in the width direction (Z direction). It was produced and evaluated in the same manner as in Example 16 except that it was curved concavely toward the other end 32G of the direction (Z direction) (see FIG. 12). Table 3 shows the results.

[Comparative Example 1]
A handle is formed on the upper part of the main body, and an elliptical slit (finger hook) is provided in the handle. The central part of the finger hook is placed on the upper end of the handle, and both ends of the finger hook are placed on the lower end of the handle), and the length of the finger hook in the longitudinal direction (X direction) is about A packaging bag was produced and evaluated in the same manner as in Example 1, except that the width of the handle portion in the height direction (Y direction) was set to about 10 mm (see Patent Document 1). Table 3 shows the results.

[Comparative Example 2]
A handle is formed on the upper part of the main body, and two elliptical slits (a finger hook and a finger hook) are provided in the handle, and the elliptical shapes of the finger hook and finger hook are substantially symmetrical. Arranged side by side in the longitudinal direction (X direction) of the handle (the center of the finger hook and the center of the finger hook are placed on the lower end side of the handle, and both ends of the finger hook and finger hook The long diameter of the handle is about 30 mm, the shortest diameter of the handle is about 15 mm, and the shortest distance between the finger hooks is about 20 mm. A packaging bag 100 was produced and evaluated in the same manner as in Example 1, except that (see Patent Document 2). Table 3 shows the results.

From Tables 1 to 3, the belt-shaped members 31 and 32 are arranged so as to overlap the top surface upper portion 11A as the handle portion 30, and both ends 31A and 31B of the belt-shaped member 31 and both ends 32A and 32B of the belt-shaped member 32 are arranged. is bonded to both ends TE1 and TE2 of the top surface 11 (upper top surface 11A) of the main body 10, and the results of the finger insertion test and the finger hook test are both 4.0 or more (good), The pendulum test was ◯ (good) (Examples 1 to 20).

On the other hand, the results of the finger-insertion test for conventional packaging bags in which a handle is formed on the upper part of the main body and a finger hook is formed on the handle are all less than 4.0 (defective). , the result of the finger hanging test was less than 4.0 (defective) for those with two slits, and the results of the pendulum test were both x (defective) (Comparative Examples 1 and 2).

In addition, by bending one end 31F, 32F in the width direction (Z direction) of the strip members 31, 32 in a concave shape toward the other end 31G, 32G in the width direction (Z direction), the result of the finger insertion test is improved. (Examples 3, 4, 9-12, 17-20).

In addition, by using the band-shaped members 31 and 32 with one ends 31F and 32F in the width direction (Z direction) folded back as the handle portion 30, the results of the finger hanging test were improved (Examples 5 to 20), and both ends 31F, By using the belt-shaped member 31 with the 31G folded back and the belt-shaped member 32 with both ends 32F and 32G folded back and the 31G folded back, the results of the finger hanging test were further improved (Examples 13 to 20).

In addition, by using the handle portion 30 in which the other open end 31G of the belt-shaped member 31 is positioned on the belt-shaped member 32 side and the other open end 32G of the belt-shaped member 32 is positioned on the belt-shaped member 31 side, finger insertion is possible. Improved test results (Examples 7, 8, 11, 12, 15, 16, 19, 20).

From these results, the handle portion is composed of a belt-shaped member, the belt-shaped member is arranged so as to overlap the top surface of the top surface, and both ends of the belt-shaped member in the longitudinal direction are placed at the top surface upper part overlapping the top surface lower part. (both ends of the top surface in the width direction of the main body) are easy to hold and less likely to break.

In addition, a packaging bag in which at least one of the longitudinal ends of the belt-shaped member constituting the handle is folded back and joined to the top surface is the end of the belt-shaped member constituting the handle. It was found that the handle can be suppressed from breaking from the top surface because it can be reinforced in a state where it is joined to the top surface.

Moreover, it was found that a packaging bag in which at least one end in the width direction of the belt-like member is concavely curved toward the other end in the width direction is easier to hold.

Moreover, it was found that a packaging bag in which at least one of the two belt-shaped members is folded back at least one end in the width direction of the belt-shaped member is easier to hold and less likely to be damaged. Furthermore, the packaging bag in which the belt-shaped members are arranged so that the other end of the belt-shaped members in the width direction is open and the other end is located on the side of the other belt-shaped member of the two belt-shaped members is easier to hold. It turns out there is something.

Although the embodiments of the present invention have been described above, the present invention is not limited to specific embodiments, and various modifications and changes are possible within the scope of the invention described in the claims. .

100 packaging bag T object to be packaged (toilet paper)
10 Body Part 11 Top Surface 11A Top Surface Top 11B Top Surface Bottom OL1 Top Surface Top Part OL2 Top Surface Top Part 12 Bottom 13 Front 14 Back 15 Side 16 Side 20 Seal Part 30 Handle 31 Strip 31A End Part 31B End 31C Base 31D Folded end 31E Folded end 31F One end 31G Other end 32 Strip member 32A End 32B End 32C Base 32E Folded end 32F One end 32G Other end 40 Joint 41 First joint 42 Second Joint CP1 Curved portion (recess)
CP2 curved part (concave part)
OP1 opening part OP2 opening part P fingers, etc. 200 production line 110 unloading unit 111 unloading roll 120 original film conveying unit 130 tubular film forming unit 140 tubular film conveying unit 150 gusset forming unit 151 folding plate 152 folding plate 160 gusset sheet conveying Section 170 Heat Shielding Section 171 Heat Shielding Plate 172 Heat Shielding Plate 180 Seal Forming Section 190 Winding Section 191 Winding Roll MD Conveying Direction RF Raw Film SS Side Seal TF Cylindrical Film GS Gusset Sheet GF1 First Fold GF2 Second Crease HS Semi-finished product

Claims (18)

a main body in which the object to be packaged is accommodated;
a seal portion that seals the top surface of the main body;
A packaging bag having a handle portion formed on the top surface,
The main body is formed of a tubular film folded into a gusset,
The seal portion is configured to seal the opening of the tubular film,
The top surface has an upper top surface on which the seal portion is formed and a lower top surface portion that overlaps with a part of the top surface upper portion,
The handle portion is composed of a belt-shaped member,
both ends of the belt-shaped member in the longitudinal direction are joined to the part of the upper part of the top surface ;
A packaging bag , wherein at least one end in the width direction of the belt-like member curves toward the other end in the width direction . a main body in which the object to be packaged is accommodated;
a seal portion that seals the top surface of the main body;
A packaging bag having a handle portion formed on the top surface,
The main body is formed of a tubular film folded into a gusset,
The seal portion is configured to seal the opening of the tubular film,
The top surface has an upper top surface on which the seal portion is formed and a lower top surface portion that overlaps with a part of the top surface upper portion,
The handle portion is composed of a belt-shaped member,
both ends of the belt-shaped member in the longitudinal direction are joined to the part of the upper part of the top surface;
The handle portion is composed of two strip-shaped members arranged in a direction intersecting with the longitudinal direction,
A packaging bag , wherein at least one of the two strip-shaped members has a folded portion formed by folding back at least one end in the width direction of the strip-shaped member . The belt-shaped member is open at the other end in the width direction,
3. The packaging bag according to claim 2, wherein the belt-shaped members are arranged such that the other end is located on the side of the other of the two belt-shaped members . The packaging bag according to any one of claims 1 to 3 , wherein both longitudinal ends of said belt-shaped member are joined to both lateral ends of said top surface of said main body. The packaging bag according to any one of claims 1 to 4 , wherein the handle part is arranged so that the belt-shaped member overlaps the upper part of the top surface. 6. The packaging bag according to any one of claims 1 to 5 , wherein at least one end of both ends in the longitudinal direction of the belt-shaped member is joined in a folded state. The packaging bag according to claim 2 or 3 , wherein at least one end in the width direction of said belt-like member curves toward the other end in said width direction. 2. The packaging bag according to claim 1 , wherein said handle portion is composed of two belt-like members arranged in a direction crossing said longitudinal direction. 9. The packaging bag according to claim 8 , wherein at least one of said two strip-shaped members has a folded portion formed by folding back at least one end in the width direction of said strip-shaped member. The belt-shaped member is open at the other end in the width direction,
10. The packaging bag according to claim 9 , wherein the belt-shaped members are arranged such that the other end is located on the side of the other of the two belt-shaped members. A main body part for accommodating an object to be packaged, a seal part for sealing a top surface of the main body part, and a handle part formed on the top surface,
The main body is formed of a tubular film folded into a gusset,
The seal portion is configured to seal the opening of the tubular film,
The top surface has an upper top surface on which the seal portion is formed and a lower top surface portion that overlaps with a part of the top surface upper portion,
The handle portion is composed of a belt-shaped member,
A method for manufacturing a packaging bag, wherein both ends in the longitudinal direction of the belt-shaped member are joined to the part of the upper part of the top surface ,
a gusset forming step of folding the tubular film into a gusset shape to form a pair of gusset portions in the tubular film;
a sealing step of sealing the opening of the tubular film to form the sealing portion;
Between the gusset forming step and the sealing step, a heat shielding step of installing a heat shielding plate on the gusset portion to block heat conduction,
A method of manufacturing a packaging bag, wherein in the sealing step, the belt-shaped member is joined to the gusset portion to form the handle portion. 12. The method of manufacturing a packaging bag according to claim 11, wherein both longitudinal ends of said belt-shaped member are joined to both lateral ends of said top surface of said main body. The manufacturing method of the packaging bag according to claim 11 or 12, wherein the handle portion is arranged so that the belt-like member overlaps the upper portion of the top surface. 14. The method of manufacturing a packaging bag according to any one of claims 11 to 13, wherein at least one end of both ends in the longitudinal direction of the belt-like member is joined in a folded state. The method of manufacturing a packaging bag according to any one of claims 11 to 14, wherein at least one end in the width direction of said belt-like member curves toward the other end in said width direction. 16. The method of manufacturing a packaging bag according to any one of claims 11 to 15, wherein said handle portion is composed of two belt-shaped members arranged in a direction intersecting said longitudinal direction. 17. The method of manufacturing a packaging bag according to claim 16, wherein at least one of said two strip-shaped members has a folded portion formed by folding back at least one end in the width direction of said strip-shaped member. The belt-shaped member is open at the other end in the width direction,
18. The method of manufacturing a packaging bag according to claim 17, wherein said belt-shaped members are arranged such that said other end is located on the side of the other of said two belt-shaped members.

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