JP5953043B2 - Gazette bag with fitting - Google Patents

Description

  The present invention relates to a gusset bag with a fitting tool.

  In the food field and the like, gusset bags are widely used because the opening can be widened and the contents can be easily taken in and out. There is also known a gusset bag with a fitting tool in which a fitting tool having fitting portions that are detachably fitted to each other is provided on the inner surface in the vicinity of the opening of the gusset bag so that the opening of the gusset bag can be repeatedly opened and closed. ing.

For example, there is known a gusseted bag 101 with a fitting tool including a gusset-shaped bag body 110 and a fitting tool 120 provided on the inner surface of the bag body 110 as illustrated in FIG. Patent Document 1). The fitting tool 120 includes flat portions 111 and 112 that face each other, and a pair of side portions 113 and 114 that are folded inward from the side edges of the flat portions 111 and 112. The fitting tool 120 has a protruding male fitting part 121 provided in parallel along the longitudinal direction of the base material. The fitting tool 120 is fitted by fitting and hooking a plurality of opposing male fitting parts 121 to each other.
Further, in the male fitting portion 121 of the fitting tool 120, notches 122 and 123 are provided at portions corresponding to the folding lines 113 a and 114 a of the side surface portions 113 and 114, respectively. Thereby, the bag main body 110 is easy to fold the side parts 113 and 114 into a gusset shape with the fold lines 113a and 114a inside.

JP 2006-290373 A

However, when the gusset bag 101 with the fitting tool seals the opening of the bag body 110 with the fitting tool 120, the vicinity of the side portions 113, 114 is not particularly stably sealed, and the contents come out of the bag body 110. May end up.
Specifically, when the opening formed in the bag body 110 is sealed, as shown in FIG. 12, it is difficult to bring the flat surface portions 111 and 112 and the side surface portion 113 sufficiently close to each other. There is a gap, and the contents may come out from there.

  An object of this invention is to provide the gusset bag with a fitting tool which has a fitting tool which can be stably sealed so that opening can be opened freely.

The gusseted bag with a fitting of the present invention has a pair of opposed flat portions and a gusset-shaped bag body having a side portion folded inward from at least one side edge of the pair of flat portions,
A fitting having a fitting portion that is provided in a band shape along the circumferential direction on the inner surface of the opening and the side portion of the opening formed in the bag body, and the opposing portions are detachably fitted to each other; Have
The upper part of the bag body is sealed with an upper seal part,
The upper seal portion includes a narrow seal portion having a narrow seal width located on one side edge side of the bag body and a wide seal portion having a wide seal width located on the other side edge side of the narrow seal portion. ,
On the lower side of the narrow seal portion in the bag body, a cutting auxiliary line extending from one side edge to the wide seal portion and assisting the cutting of the bag body for forming the opening is formed,
The fitting is provided on the inner surface of the bag body on the lower side of the auxiliary cutting line from the one side edge to the wide seal portion,
In the fitting tool, a plurality of cutout portions along a direction intersecting with the longitudinal direction of the fitting portion are formed in the fitting portion of the portion where the side surface portion and the flat surface portion face each other. To do.

  The gusset bag with a fitting tool of the present invention can be stably sealed so that the opening can be opened.

It is the front view which showed an example of the gusset bag with a fitting tool of this invention. It is sectional drawing when the gusset bag with a fitting tool of FIG. 1 is cut | disconnected by straight line I-I '. It is sectional drawing when the gusset bag with a fitting tool of FIG. 1 is cut | disconnected by straight line II-II '. It is the perspective view which showed the fitting tool in the gusset bag with a fitting tool of this invention. It is the perspective view which showed a mode that the gusset bag with a fitting tool of FIG. 1 was opened. It is sectional drawing when the gusset bag with a fitting tool of FIG. 5 is cut | disconnected by the straight line III-III '. It is sectional drawing which showed the other example of the fitting tool. It is sectional drawing which showed the other example of the fitting tool. It is sectional drawing which showed the other example of the fitting tool. It is the perspective view which showed an example of the manufacturing process of the gusset bag with a fitting tool of this invention. It is sectional drawing when the attachment position of the fitting tool of the conventional gusset bag with a fitting tool is cut | disconnected in the width direction. It is the expanded sectional view which showed a mode that the opening of the gusset bag with a fitting tool of FIG. 11 was closed.

Hereinafter, an example of an embodiment of a gusset bag with a fitting tool of the present invention is shown and described in detail.
The fitting-equipped gusset bag 1 of the present embodiment (hereinafter referred to as “gazette bag 1”) is provided in a band shape on the inner surface of the bag body 10 and the bag body 10 as shown in FIGS. And the fitted tool 20.

As shown in FIGS. 1 and 2, the bag body 10 includes a pair of opposed flat portions 11 and 12, a side edge 11 a of the flat portion 11, and a side portion 13 that is folded inward from the side edge 12 a of the flat portion 12. And a side surface portion 14 folded inward from the side edge 11b of the flat surface portion 11 and the side edge 12b of the flat surface portion 12. The side surface portion 13 is folded with the folding line 13a inside, and the side surface portion 14 is folded with the folding line 14a inside.
Moreover, as for the bag main body 10 of this embodiment, the plane parts 11 and 12 and the side parts 13 and 14 consist of one film material, this film material is made into a cylinder shape, and side edge parts are bonded together. By forming the back pasting portion 15 and folding the side surface portions 13 and 14 inward to seal the bottom seal portion 16, the bag is shaped like a gusset that can accommodate the contents.

Moreover, the bag main body 10 is sealed by sealing the upper part with the upper seal part 17 in the state which accommodated the contents. As shown in FIG. 1, the upper seal portion 17 has a narrow seal portion 17a with a narrow seal width on the side edges 11a, 12a side, and the side edges 11b, 12b side of the narrow seal portion 17a are The wide seal portion 17b has a wide seal width.
In the upper part of the bag body 10, the lower edge of the narrow seal portion 17a is advanced from the side edge 11a, 12a side to the wide seal portion 17b, and the bag is formed along the side edge portion on the side edge 11a, 12a side of the wide seal portion 17b. An auxiliary cutting line 18 is formed so as to reach the upper edge of the main body 10. The cutting auxiliary line 18 can assist in cutting and opening a part of the upper portion of the side edge 11a, 12a side of the bag body 10. A notch 19 is formed at the end of the auxiliary cutting line 18 on the side edges 11a, 12a side.
As shown in FIG. 5, the bag body 10 can form an opening 10 a on the side of the upper side portion 13 by cutting and opening a part of the upper portion along the cutting auxiliary line 18. ing.

The shape of the flat portions 11 and 12 is a rectangle in this example. However, the shape of the plane portions 11 and 12 is not limited to a rectangle. Further, the size of the flat portions 11 and 12 is not particularly limited, and may be appropriately selected depending on the contents accommodated in the bag body 10.
The shape of the side surface portions 13 and 14 can be appropriately selected according to the flat surface portions 11 and 12, and is rectangular in this example. Further, the size of the side surface portions 13 and 14 is determined according to the size of the flat surface portions 11 and 12.

The flat portions 11 and 12 may be any one that can weld the fitting 20 by heat sealing, and examples thereof include a film in which a heat resistant layer and a heat sealing layer are laminated from the inner surface side. The flat portions 11 and 12 may have a barrier layer between the heat-resistant layer and the heat seal layer.
Examples of the material for the heat-resistant layer include biaxially stretched nylon and biaxially stretched polypropylene.
Examples of the material for the heat seal layer include linear low density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer.
Examples of the material for the barrier layer include polyvinyl alcohol.
The side films 13 and 14 can use the same film material as the flat surfaces 11 and 12.

As the cutting auxiliary line 18, for example, a weakened line formed by thinning a portion of the cutting auxiliary line 18 in the flat surface parts 11 and 12 and the side surface part 13 of the bag body 10 as compared with other parts, a weakened line made of perforations, A weakening line composed of pores formed in a row is mentioned. The auxiliary cutting line 18 is not limited to the weakening line, and may be a line formed by printing or the like indicating a position to be cut with a scissor or a cutter.
The shape of the auxiliary cutting line 18 is not limited to that described above, and may be appropriately provided according to the opening shape formed in the bag body 10.

  The shape of the notch 19 is a triangular shape in this example, but is not particularly limited, and may be a semicircular shape, a linear shape, or the like.

As shown in FIGS. 1 and 2, the fitting tool 20 is provided on the inner surface of the bag body 10 on the lower side of the cutting assisting line 18 in a strip shape along the width direction from the side edges 11a, 12a to the wide seal portion 17b. It has been. As a result, the opening 10a formed in the bag body 10 shown in FIG.
As shown in FIGS. 3 and 4, the fitting tool 20 includes a belt-like base material 21 and a fitting portion 22 provided along the longitudinal direction of the base material 21. The fitting part 22 rises from the base material 21 in a circular arc shape and forms a recess 22a. The first arm part 23 and the second arm part 24, and the first arm part 23 and the second arm part 24 And a male claw portion 25 provided so as to be positioned therebetween. That is, the fitting part 22 of the fitting 20 has a form in which a male fitting part is provided in a female fitting part.

As shown in FIG. 3, the fitting tool 20 includes a male claw part 25 and a first arm part 23 or a second arm claw part 25 in the fitting tool 20 provided on the opposing surface. By being fitted between the arm portions 24, they can be detachably fitted.
In the gusset bag 1, as shown in FIGS. 2 and 3, the fitting portion 22 provided on the side surface portion 13 and the fitting provided on the portions 11 c and 12 c facing the side surface portion 13 of the flat surface portions 11 and 12. The portions 22 are fitted into each other, and the fitting portions 22 of the portions where the flat portion 11 and the flat portion 12 face each other are fitted into each other, so that the opening 10a is sealed openably and closably.

  The cross-sectional shape of the fitting part 22 may be any as long as it can repeatedly open and close the opening 10a formed in the bag body 10 by attaching and detaching the opposing fitting parts 22 to each other. A cross-sectional shape combining a part and a female fitting part can be employed.

Further, as shown in FIGS. 2 and 4, the fitting tool 20 includes a fitting portion 22 provided on the side surface portion 13 of the bag body 10, and a portion 11 c facing the side surface portion 13 in the flat surface portions 11 and 12. A plurality of cutout portions 26 are formed in the fitting portion 22 provided in 12c along the direction intersecting the longitudinal direction of the fitting portion 22. Thereby, the opening 10a formed in the bag body 10 can be stably and sufficiently sealed. The reason for this is as follows.
For example, in the case of the fitting-equipped gusseted bag 101 shown in FIG. 11, the male fitting portion 121 is harder than the film material and is difficult to bend. Therefore, the flexibility of the plane portions 111 and 112 and the side surface portion 113 is low. As a result, as shown in FIG. 12, it is difficult to bring the flat portions 111 and 112 and the side surface portion 113 in the region a sufficiently close to each other, so that a gap is generated on the side surface portion 113 side and the opening cannot be stably sealed. (The same applies to the side surface portion 114 side).
On the other hand, in the gusset bag 1 of the present invention, a plurality of cutout portions 26 are provided in the side portion 13 and the fitting portions 22 provided in the portions 11c and 12c of the flat portions 11 and 12 facing the side portion 13. By being provided, the flexibility of the flat surface portions 11 and 12 and the side surface portion 13 is improved. Therefore, the flat surface portions 11 and 12 and the side surface portion 13 can be easily brought close to each other, the fitting portions 22 provided in those portions can be firmly fitted to each other, and the opening 10a is stably and sufficiently provided. It will be possible to seal it.

  As a form of the notch 26, a form (A) formed by cutting the fitting part 22 with a blade or the like, a form (B) formed by cutting off a part of the fitting part 22, and a fitting The form (C) etc. which crushed and formed a part of part 22 are mentioned. Especially, form (A) is preferable from the point that manufacture is easy and fitting intensity | strength becomes high.

Moreover, in this invention, as shown in FIG.2 and FIG.6, it is preferable that the notch part 27 is provided in the part corresponding to the fold line 13a of the side part 13 in the fitting part 22. FIG. This makes it easier to bend the side surface portion 13 with the fold line 13a as a base point, so that the vicinity of the fold line 13a of the side surface portion 13 is difficult to bend, and the side surface portion 13 and the side surface portions 13 of the flat surface portions 11 and 12 It becomes easy to bring the opposing portions 11c and 12c closer to each other. Therefore, the fitting part 22 provided in the part 11c, 12c facing the side part 13 and the side part 13 of the plane parts 11 and 12 can be more stably fitted.
Moreover, it is preferable that the notch parts 28 and 29 are provided in the part corresponding to the notch part 27 when the opening 10a is sealed in the fitting part 22 provided in the plane parts 11 and 12, respectively. As a result, the side surface portion 13 side of the flat surface portions 11 and 12 can be bent with the cutout portions 28 and 29 as base points, so that the flat surface portions 11 and 12 are curved in the vicinity of the fold line 13a of the side surface portion 13. It becomes difficult to do. Therefore, the side surface portion 13 and the portions 11c and 12c facing the side surface portion 13 of the flat surface portions 11 and 12 are brought close to each other, and the fitting portions 22 provided in those portions can be easily fitted to each other. Become.
Examples of the form of the notches 27 to 29 include the forms (A) to (C) mentioned in the notch 26.

  It is preferable that the fitting part 22 of the side edge 11a of the plane part 11 in the fitting tool 20 and the part of the side edge 12a of the plane part 12 is crushed by heat sealing. Thereby, it can suppress that the part of the side edges 11a and 12a of the bag main body 10 spreads, and the opening 10a can be sealed more stably.

As the material of the fitting tool 20, the same material as that of a known fitting tool can be used, and examples thereof include polyolefin resins such as polyethylene and polypropylene. The resin forming the fitting 20 may be one type or two or more types. Moreover, well-known additives, such as a stabilizer, antioxidant, a lubricating agent, an antistatic agent, and a coloring agent, may be added to the fitting tool 20 as needed.
Moreover, the base material 21 of the fitting tool 20 may consist of a single layer film, and may consist of a multilayer film. Examples of the laminated film include films including a heat seal layer, a heat resistant layer, a barrier layer, and the like.

The manufacturing method of the gusset bag 1 is not specifically limited, For example, the method shown below is mentioned.
First, as shown in FIG. 10, while transporting the long film material 10A forming the flat surface portions 11 and 12 and the side surface portions 13 and 14 in the longitudinal direction, the short film material 10A is formed on the film material 10A. Along the hand direction, the fitting tool 20 provided with the notches to be the notches 26 to 29 is welded, and the film material 10A is cut along the straight line x.
Thereafter, the one side end portion 10b and the other side end portion 10c of the cut film material 10A are aligned so that the fitting tool 20 is on the inside, thereby forming the film material 10A into a cylindrical shape, and these side end portions 10b. The back end portion 15 is formed by heat sealing the side end portion 10c. Next, the back pasting portion 15 becomes the back surface and is folded into a gusset shape so that the fitting tool 20 is disposed on the side surface portion 13 side to form the flat surface portions 11 and 12 and the side surface portions 13 and 14. The side edge 11a and the side edge 12a portion of the flat surface portion 12 are point-sealed, and the fitting portion 22 of that portion is crushed. Furthermore, the bottom portions of the flat portions 11 and 12 and the side portions 13 and 14 are heat sealed to form the bottom seal portion 16, and after the contents are accommodated, the upper portion is heat sealed to form the upper seal portion 17. Seal.
The formation time of the cutting auxiliary line 18 and the notch 19 is not particularly limited, and may be previously formed in a corresponding position of the film material 10 </ b> A, or may be formed after the bag body 10 is sealed.

  As described above, the gusseted bag with a fitting tool of the present invention has a gusset-like shape by providing the fitting tool provided with the aforementioned notch in the belt-like fitting portion on the inner surface of the opening of the bag body. The opening formed in the bag body can be stably and sufficiently sealed.

In addition, the gusset bag with a fitting tool of the present invention is not limited to the gusset bag 1 described above. For example, the fitting part of the fitting tool in the gusseted bag with the fitting tool of the present invention may not have the notches 27 to 29.
Moreover, as long as it has the above-mentioned notch part, the cross-sectional shape may be a shape other than the fitting part 22. For example, as shown in FIG. 7, a strip-shaped base material 21 is fitted with a male part of a ridge composed of a trunk 30 a rising from the base 21 and a head 30 b larger than the trunk 30 a provided on the trunk 30 a. The part 30 may be a gusseted bag with a fitting tool having a plurality of fitting tools 20 </ b> A provided in parallel along the longitudinal direction of the base material 21.
In the fitting tool 20 </ b> A, the respective heads 30 b of the parallel male fitting parts 30 are respectively fitted between the male fitting part 30 and the male fitting part 30 provided in parallel on the opposite side. Thus, the heads 30b can be hooked together and detachably fitted. In such a fitting, the number of male fitting parts is not particularly limited, and is preferably 3 to 6 and more preferably 4 to 5 from the viewpoint of ease of opening and closing operations and certainty.

Further, as shown in FIG. 8, a protruding male fitting portion 31 and a female fitting portion 32 that is detachably fitted to the male fitting portion 31 are formed on a pair of belt-like base materials 21. The gusset bag with a fitting tool having the fitting tool 20B provided along the longitudinal direction of the base material 21 may be used. The male fitting portion 31 has a trunk portion 31a formed so as to protrude from the base material 21, and a head portion 31b having a substantially semicircular cross section larger than the trunk portion 31a. The female fitting portion 32 includes arm portions 32a and 32b protruding from the base member 21 in a circular arc shape, and a concave portion 32c is formed by the arm portions 32a and 32b. The fitting tool 20B allows the male fitting portion 31 and the female fitting portion 32 to be detachable by fitting the head portion 31b of the male fitting portion 31 into the concave portion 32c of the female fitting portion 32. It can be mated.
When the fitting tool 20B is used, the male fitting part 31 and the female fitting part 32 are provided so as to face each other on the plane parts 11 and 12 and the side part 13 facing each other.

  Further, as shown in FIG. 9, with a fitting tool having a fitting tool 20 </ b> C in which a plurality of female fitting portions 33 are provided in parallel along the longitudinal direction of the base material 21 on the belt-like base material 21. It may be a gusset bag. The form of the female fitting part 33 includes the same form as the female fitting part 32. Each arm part of the female fitting part 33 which opposes is fitted in a mutual recessed part, and it can detachably fit by hooking each other.

In addition, the fitting tool is provided on the entire circumference in the circumferential direction of the gusset-shaped bag body, and the gusset bag with the fitting tool is configured to be able to open and close the opening formed in the entire upper portion of the bag body. There may be.
Moreover, the bag main body of a gusset bag with a fitting tool is not limited to what was formed with one film material. For example, it is a gusset bag with a fitting having a bag body formed by heat-sealing the edges of four film materials forming the flat surface portion 11, the flat surface portion 12, the side surface portion 13, and the side surface portion 14, respectively. Also good.
Moreover, it is not limited to the form which has a pair of plane parts 11 and 12 and a pair of side surface parts 13 and 14. FIG. For example, the fitting-equipped gusset having a side part folded inward only on one side edge side of the pair of plane parts and a bag body having no side part on the other side edge side of the pair of plane parts. It may be a bag.

DESCRIPTION OF SYMBOLS 1 Gazette bag with a fitting tool 10 Bag main body 11,12 Plane part 11a, 11b, 12a, 12b Side edge 13,14 Side part 15 Back sticking part 16 Bottom seal part 17 Upper seal part 18 Cut auxiliary part 19 Notch 20, 20A -20C Fitting tool 21 Base material 22 Fitting part 23 First arm part 24 Second arm part 25 Male claw part 26-29 Notch part 30, 31 Male fitting part 32, 33 Female fitting part

Claims (1)

A pair of opposing flat portions, and a gusset-shaped bag body having a side portion folded inward from at least one side edge of the pair of flat portions;
A fitting having a fitting portion that is provided in a band shape along the circumferential direction on the inner surface of the opening and the side portion of the opening formed in the bag body, and the opposing portions are detachably fitted to each other; Have
The upper part of the bag body is sealed with an upper seal part,
The upper seal portion includes a narrow seal portion having a narrow seal width located on one side edge side of the bag body and a wide seal portion having a wide seal width located on the other side edge side of the narrow seal portion. ,
On the lower side of the narrow seal portion in the bag body, a cutting auxiliary line extending from one side edge to the wide seal portion and assisting the cutting of the bag body for forming the opening is formed,
The fitting is provided on the inner surface of the bag body on the lower side of the auxiliary cutting line from the one side edge to the wide seal portion,
In the fitting tool, a plurality of cutout portions along a direction intersecting with the longitudinal direction of the fitting portion are formed in the fitting portion of the portion where the side surface portion and the flat surface portion face each other. A gusset bag with a fitting.

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