JP6998932B2 - Bag with zipper - Google Patents

Description

The present invention relates to a bag with a zipper having a zipper portion that is openly sealed at the entrance / exit of an article by male-female fitting.

For storing foods, storing medicines, etc., a bag with a zipper having a chuck portion that can be openedly sealed at the entrance / exit of an article by male-female fitting is used.
As such a bag with a zipper, as shown in FIG. 8, a bag E with a zipper provided with wide sealing portions 120 on both sides of the article entrance / exit 110 of the bag body 100 has been proposed (see Patent Document 1).

That is, since the width of the article inlet / outlet 110 is narrower than the width of the article accommodating portion 130 by providing the wide seal portion 120 in the zippered bag E, it is easy to take out the contents of the article accommodating portion 130 little by little. There is an advantage of becoming.
Further, since the wide seal portion 120 is provided at the position where the edge of the chuck portion 160 faces, the seal portion 120 does not tear when the chuck portion 160 is opened and closed, and the durability is excellent.

Jitsukaisho 57-169650 Gazette

However, in the bag E with a zipper, since the wide sealing portion 120 is continuously provided up to the opening end of the bag main body 110 with the same width, the opening is expanded while holding the opening end of the bag main body 110. There is a problem that it is difficult to release the fitting of the chuck portion 160.

In view of the above circumstances, the present invention has a chuck that makes it easy to take out an article even if the bag body is less likely to tear even if the chuck is repeatedly opened and closed, and even if the width of the chuck is narrower than the width of the bag body. The purpose is to provide a bag.

In order to achieve the above object, in the bag with a zipper according to the present invention, the sheet-like materials in a stacked state are formed in a bag shape by fusing the lower edge and both side edges in the stacked state, and the upper edge side. With a bag main body having an article entrance / exit and a chuck portion provided with a chuck portion that is fused to the sheet-like material and has male / female fittings of the same width dimension so that the article entrance / exit can be opened openly. The bag is a bag, and the bag main body portion has a side edge fusion portion formed to have the same width along both side edges, and one side edge fusion portion to the other side edge fusion portion side. It is provided with two wide fusion splicing portions extending toward each other and a partition fusion splicing portion provided so as to partition between the wide fusion splicing portions so as to form an article inlet / outlet having a different width provided with a chuck portion. The wide fused portion extends from the end edge of the side edge fused portion to the edge of the chuck portion, and from the side edge fused portion to the upper edge of the first fused portion. A shape extending in the direction of the chuck portion side edge of the first fused portion, and the chuck portion side edge thereof being cut out in a stepped or tapered shape with respect to the chuck portion side edge of the first fused portion. The partition fusion portion has the same width as the vertical width of the first fusion portion, and one end of the partition fusion portion sandwiches the partition fusion portion. A first partition fusion splicer that reaches the edge and the other end reaches the end edge of the chuck portion of the other article inlet / outlet that sandwiches the partition fusion splicer portion, and the first partition fusion splicer above the first partition fusion splicer portion. It has two second partition fusion portions separated from the upper edge of the attachment portion by a slit reaching the upper edge side end edge of the bag main body portion and has a symmetrical shape about the slit, and the second partition fusion fusion is performed. A narrow portion extending from the upper edge of the first partition fusion portion to the upper edge of the slit along the slit, and a portion along the upper edge of the first partition fusion portion from the lower end side of the narrow portion. Along with extending in a direction away from the slit, the extending end is provided with a wide portion having a stepped or tapered shape cut out from the end edge of the first partition fusion portion, and the sides on both sides thereof. The edge fusion portion has a length that protrudes upward from the upper end of the bag main body portion, and the upper edge fusion portion is at the upper end of the portion of the side edge fusion portions on both sides that protrudes upward from the bag main body portion. A cut line is provided between the upper edge fusion portion and the article entrance / exit, which is connected by the attachment portion and serves as a guide for forming the bag main body portion by cutting, and the upper end of the slit is cut out. It is characterized by reaching the line .

In the bag with a chuck of the present invention, the chuck portion has a male member and a female member having a width dimension substantially the same as the width of the chuck portion on the sheet material of the bag main body, respectively, at positions where the chuck portion of the sheet material is formed. It may be formed by being fused to.
That is, with the above configuration, the amount of male and female members constituting the thick chuck portion can be minimized.
Further, the amount of resin constituting the entire bag is reduced, and the amount of exhaust gas when the waste is incinerated can be reduced, which is environmentally friendly.

The bag with a zipper of the present invention is not particularly limited, but the width of the zipper portion is preferably 6 cm or less.
That is, in a bag with a chuck, the chuck portion is generally sandwiched between the thumb and the index finger to fit the male and female members. Therefore, the width at which the male and female members can be fitted in one operation is at most the tip of the index finger. It is the length from to the second joint part.
Therefore, if the average length from the tip of the index finger to the second joint is 6 cm or less, the chuck portion can be reliably sealed with one touch.

The bag with a zipper of the present invention is not particularly limited, but may have a configuration in which a plurality of the entrances and exits of articles having different width dimensions are arranged side by side in the width direction of the bag main body.
That is, with the above configuration, the size of the opening can be selected according to the amount to be taken in and out.

In the present invention, the sheet-like material is not particularly limited as long as it can be fused, but for example, polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polyvinyl chloride, polyvinylidene chloride, polyamide, and ethylene / vinyl acetate are used. Examples thereof include a polymer, a plastic film such as an ethylene / vinyl alcohol copolymer, paper, and a composite sheet thereof, and a composite sheet with an aluminum foil or the like, which may be transparent, opaque, or printed.
Further, in the present invention, the material of the male member and the female member of the chuck portion is not particularly limited, but it is desirable that the chuck portion is made of, for example, a resin that can be fused with the sheet material. For example, when the innermost layer of the sheet material is made of linear low-density polyethylene or low-density polyethylene, it is preferable that the male member and the female member are also made of polyethylene-based resin.

The zippered bag of the present invention is used, for example, to store powder, granules, liquid foods and drugs.

In the bag with a zipper of the present invention, as described above, the sheet-like materials in the stacked state are formed in a bag shape by fusing the lower edge and both side edges in the stacked state, and the article entrance / exit is provided on the upper edge side. A bag with a zipper having a bag main body and a chuck portion that is fused to the sheet-like material and has a male-female member having the same width and female mating to open the entrance / exit of the article. The bag main body portion extends from one side edge fusion portion toward the other side edge fusion portion and a side edge fusion portion formed to have the same width along both side edges. It is provided with two wide fusion splicing portions and a partition fusion splicing portion provided so as to partition between the wide fusion splicing portions so as to form an article inlet / outlet having a different width provided with a chuck portion. A first fusion portion in which the attachment portion reaches from the end edge of the side edge fusion portion to the end edge of the chuck portion, and a first attachment portion along the upper edge of the first fusion portion from the side edge fusion portion. A second fusion having a shape extending in the direction of the chuck portion side edge of the fused portion and having the chuck portion side edge cut out in a stepped or tapered shape with respect to the chuck portion side edge of the first fused portion. It has a attachment portion, and the partition fusion portion has the same width as the vertical width of the first fusion portion, and one end reaches the end edge of the chuck portion of one of the article inlets / outlets sandwiching the partition fusion portion. The first partition fusion section where the other end reaches the end edge of the chuck portion of the other article inlet / outlet sandwiching the partition fusion section, and above the first partition fusion section above the first partition fusion section. It has two second partition fusion sections separated from the edge by a slit reaching the upper edge side edge of the bag main body and has a symmetrical shape about the slit, and the second partition fusion section is the said. A narrow portion extending from the upper edge of the first partition fusion portion to the upper edge of the slit along the slit, and from the lower end side of the narrow width portion along the upper edge of the first partition fusion portion from the slit. Along with extending in a distant direction, the extending end is provided with a wide portion having a shape notched in a stepped or tapered shape with respect to the end edge of the first partition fusion portion, and the side edge fusion portions on both sides are provided. Is long enough to protrude above the upper end of the bag body, and is connected by the upper edge fusion section at the upper end of the side edge fusion portions on both sides that protrude above the bag body. A cut line is provided between the upper edge fusion portion and the entrance / exit of the article as a guide for forming the bag main body portion by cutting, and the upper end of the slit reaches the cut line. Therefore, it has the following excellent points.
(1) Since it is equipped with article entrances and exits with different opening widths, a large article entrance / exit is used when the amount of items to be taken in and out is large, and a small article entrance / exit is used when the amount of items to be taken in and out is small. It can be kept in the opening of the limit and can prevent oxidation and moisture of the contents.
(2) Since the slit is provided and the upper part of each article entrance / exit is continuous in a circle shape, the opening edge is not torn when opening each article entrance / exit with the opening edge. ..

It is a front view which shows the state before fusion | fusion of the lower end fusion part of the 1st reference example of a bag with a zipper. FIG. 5 is a cross-sectional view taken along the line XX of FIG. It is a figure which shows the state which filled the bag with a zipper of FIG. It is a figure which shows the state which cut out the cut-out part of the bag with a zipper of FIG. It is a front view which shows the state before fusion | fusion of the lower end fusion part of the 2nd reference example of the bag with a zipper. It is a front view which shows the state before fusion | fusion of the lower end fusion part of the 1st Embodiment of the bag with a zipper of this invention. It is a front view which shows the state before fusion | fusion of the lower end fusion part of the 3rd reference example of a bag with a zipper . It is explanatory drawing of the bag with a conventional zipper.

Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments thereof.
1 to 4 show a first reference example of a bag with a zipper .

As shown in FIGS. 1 and 3, the zippered bag A has a rectangular shape in front view, and as shown in FIG. 2, two rectangular resin sheet materials 1 and 1 and a chuck portion 2a are attached. It is formed of a male member 21 and a female member 22 that constitute the member.
That is, as shown in FIG. 1, the two resin sheets 1 and 1 have two side edge fusion portions 41 and an upper edge fusion portion 42 so that the male member 21 and the female member 22 fit together. And are fused and integrated by the two wide fusion splicing portions 5a, and formed into a bag shape having an opening 12 at the lower end.

The both side edge fused portion 41 and the upper edge fused portion 42 are formed with a narrow width of the same width.
The wide fused portion 5a includes a first fused portion 51 on the opening 12 side and a second fused portion 52 of the upper edge fused portion 42, and the both side edge fused portions 41 are provided in the vicinity of the upper edge fused portion 42. An article entrance / exit 11 having a width of 6 cm is formed between the first fusing portions 51 while extending from the other to the other wide fusing portion 5a.
The width of the second fused portion 52 is narrower in a stepped manner than that of the first fused portion 51.

The male member 21 is supported by the base portion 21a having a length of 6 cm and having a strip shape having the same width as the vertical dimension of the article entrance / exit 11 and the base portion 21a so as to be continuous in the longitudinal direction of the base portion 21a. The fitting ridge 21b is provided, and the base portion 21a is fused at a position corresponding to the article inlet / outlet 11 of one of the resin sheet materials 1 so that the fitting ridge 21b is parallel to the upper fusion portion. ..
The female member 22 is supported by a strip-shaped base portion 22a having a length of 6 cm and the base portion 22a so as to be continuous in the longitudinal direction of the base portion 22a, and the base portion 22a is the other resin sheet material 1. The fitting groove 22b is fused so as to be parallel to the upper fusion portion at a position corresponding to the article entrance / exit 11 to which the fitting ridge 21b is fitted.

In general, it is preferable that the male member 21 and the female member 22 are fused to the resin sheet material 1 before being fused into a bag shape.
Further, the resin sheet material 1 may be transparent, opaque, or may have a printed surface.

Then, as shown in FIG. 3, the zippered bag A is filled with the space between the opening 12 and the chuck portion 2a through the opening, and then the end edge on the opening 12 side. The lower end fusion portion 43 is formed in the lower end fusion portion 43, and the contained object 7 is accommodated in a sealed state between the lower end fusion portion 43 and the chuck portion 2.
Further, as shown by the dotted line in FIGS. 1 and 3, the bag A with a zipper is printed with a cut line 13 indicating a boundary between the bag main body portion 14 and the cut portion 15.

As shown in FIG. 4, when the cut-out line 13 cuts the cut-out portion 15 along the cut-out line 13 when taking out the contained object 7 housed in the bag main body portion 14, the cut-out line 13 has a chuck portion 2a on the bag main body portion 14. It is possible to form an open end 16 suitable for opening and closing.
That is, by pushing the open end 16 open with both hands, the fitting of the fitting ridge 21b of the chuck portion 2a and the fitting groove 22b can be easily released, and the contained object 7 can be taken in and out from the article entrance / exit 11. It has become like.

The bag A with a zipper is as described above, and has the following excellent effects.
(1) Since the wide fused portion 5a is provided along the edge of the chuck portion 2a, the bag main body portion 14 is less likely to be damaged even if the chuck portion 2a is repeatedly opened and closed.
(2) Since the wide fused portion 5a includes the second fused portion 52 having a width narrower than that of the first fused portion 51,
That is, since the wide fused portion 5a is narrowed stepwise toward the outside of the bag main body 14, the opening end 16 of the bag main body 14 cut along the cut line 13 is widened larger than the article entrance / exit 11. And the contents 7 can be easily taken in and out.
(3) Since the male member 21 and the female member 22 constituting the chuck portion 2a are used only in the same minimum length as the length of the article entrance / exit 11, the amount of resin used in the entire bag is minimized. Can be eco-friendly.
(4) Since the length of the chuck portion 2a is 6 cm or less, even in the case of a person with a small hand, the chuck portion 2a is between the tip of the index finger or the middle finger of both hands and the second joint portion and between the thumb. The entire length direction of the male member 21 can be sandwiched and pressed at once, and the fitting ridge 21b of the male member 21 can be reliably and quickly fitted into the fitting groove 22b of the female member 22 with one touch.

FIG. 5 shows a second reference example of a bag with a zipper .
As shown in FIG. 5, the zippered bag B is formed so that the second fused portion 53 of the wide fused portion 5b gradually narrows in width from the upper end of the first fused portion 51 in a tapered shape. Except for the above, it is the same as the first embodiment.
Therefore, the same components as in the first embodiment are designated by the same reference numerals as those in the first embodiment.

FIG. 6 shows the first embodiment of the bag with a zipper of the present invention.
As shown in FIG. 6, the zippered bag C includes a partition fusion splicing portion 5d between the wide fusing portion 5c and the wide fusing portion 5c.

The wide fused portion 5c includes a first fused portion 54 and a second fused portion 55 as in the first reference example.
The first fused portion 54 extends from one side edge fused portion 41 toward the other side edge fused portion 41.
The second fused portion 55 extends from the side edge fused portion 41 along the upper edge of the first fused portion 54 toward the chuck portion side edge of the first fused portion 54, and the side edge fused portion 41 thereof. The length from to the edge on the side of the chuck portion is shorter than that of the first fused portion 54.
That is, the second fused portion 55 has a shape in which the end edge on the chuck portion side is cut out in a stepped manner with respect to the edge on the chuck portion side of the first fused portion 54.

The partition fusion splicing portion 5d includes a first partition fusion splicing portion 56 and two second partition fusion splicing portions 57 in a state of being separated via a slit 8.
The first partition fusion splicing portion 56 has the same vertical dimensions as the first fusing portion 54 of the wide fusion splicing portion 5c, and the center in the major axis direction is provided so as to be offset to one side from the center in the width direction of the bag with chuck 5c. A first article entrance / exit 17a having a large opening width and a second article entrance / exit 17b having a small opening width are formed between the first fusion section 54.
The first article entrance / exit 17a and the second article entrance / exit 17b are chuck portions 2b made of male and female members having the same structure as that of the first embodiment having the length of the first article entrance / exit 17a or the second article entrance / exit 17b, respectively. 2c is provided.
One end of each of the chuck portions 2b and 2c reaches the end edge of the first fused portion 54, and the other end reaches the end edge of the first partition fused portion 56.
One of the two second partition fusion portions 57 has an L-shaped front view cross section and the other has an inverted L-shaped front view cross section with the slit 8 interposed therebetween, and the narrow portion 57b and the wide portion 57a, respectively. It is equipped with.
The narrow width portion 57b extends from the upper edge of the first partition fusion splicing portion 56 to the upper edge of the slit 8 along the slit 8.
The wide portion 57a has the same vertical dimensions as the first fused portion 54, and has the same vertical dimension as the second fused portion 55 in a direction away from the slit 8 along the upper edge of the first partition fused portion 56 from the lower end portion of the narrow portion 57b. It extends the same length.
That is, the wide portion 57a has a shape in which the extending end is notched in a stepped manner with respect to the end edge of the first partition fusion splicing portion 56.

The slit 8 has a length that reaches the cutting line 13 from the upper end of the first fused portion 56.
The bag C with a zipper has the same configuration as that of the first embodiment except for the above.
Therefore, the same components as in the first reference example are designated by the same reference numerals as those in the first embodiment.

The bag C with a zipper has the same action and effect as the first reference example , and also has the following effects.
(1) Since the first article entrance / exit 17a and the second article entrance / exit 17b having different opening lengths are provided, the first article entrance / exit 17a is used when the amount to be taken in and out is large, and the first article entrance / exit 17a is used when the amount to be taken in and out is small. 2 The bag can be kept in the minimum necessary opening by using the article entrance / exit 17b, and oxidation and moisture of the contained matter can be prevented.
(2) Since the slit 8 is provided and the upper portions of the first article entrance / exit 17a and the second article entrance / exit 17b are both continuous in a circle shape, the first article entrance / exit 17a and the second article have an open end edge. When opening the doorway 17b, the edge of the opening is not torn off.

FIG. 7 shows a third reference example of a bag with a zipper .
As shown in FIG. 7, this zippered bag D is not provided with the wide fusion splicing portion 5c, and the partition fusion splicing portion 5e is twice as wide as the side edge fusion splicing portion 41, and has a slit. Is the same as the bag with a zipper C of the first embodiment, except that the slit 8 is provided in the center of the upper end.

In FIG. 7, 18a is the entrance / exit of the first article, 18b is the entrance / exit of the second article, and 2d is therefore, the same components as those of the first embodiment are designated by the same reference numerals as those of the first embodiment. There is.

The present invention is not limited to the above embodiment. For example, in the above embodiment, when the contents are taken in and out, the cut portion is removed along the cut line, but the cut portion is not provided, and as shown in FIG. 4, the cut portion is not provided. A bag with the end edge exposed as it is may be used.
In the case of such a bag, the lower fusion part may be fused before accommodating the contents. That is, even if the lower fused portion is fused, the contents can be accommodated in the bag by using the article entrance / exit.
Further, in the case of such a bag, a male member is fused to one end of a sheet material having a long strip shape in the long direction, and a female member is fused to the end in the other long direction. At the same time, it is possible to provide a side edge fusion portion and a wide fusion portion after folding so that the male member and the female member are in the fitted state.

In the above embodiment, the sealing portion is cut off with scissors, but a perforation may be provided so that the sealing portion can be cut off by hand along the perforation.
In the above embodiment, the wide fused portion is symmetrical, but the left and right widths do not have to be symmetrical as long as the object of the present invention can be achieved.
In the above embodiment, the width of the wide fused portion is narrowed in two stages, but the width may be narrowed in three or more stages.

In the above embodiment , the number of partition fusion portions is one, but two or more may be used.
In the above embodiment, the fitting ridges of the male member and the fitting grooves of the female member are one each, but two or more may be provided.

A, B, C Chuck bag 1 Sheet material 11, 17a, 17b Article entrance / exit 2a, 2b, 2c Chuck part 21 Male member 21a Base part 21b Fitting ridge 22 Female member 22a Base part 22b Fitting groove 41 Side edge fusion Bonding part 42 Upper edge fusion part 43 Lower edge fusion part 5a, 5b, 5c Wide fusion part 5d Partition fusion part 51,54,56 First fusion part 52,55,57 Second fusion part 7 object

Claims (1)

In the superposed state, the sheet-like material in the superposed state is formed into a bag shape by fusing the lower edge and both side edges, and has a bag main body having an article entrance / exit on the upper edge side.
A bag with a zipper provided with a chuck portion that is fused to the sheet-like material and has a male-female member having the same width and female mating to openably seal the entrance / exit of the article.
The bag main body portion includes a side edge fusion portion formed to have the same width along both side edges and a side edge fusion portion.
Two wide fusion sections extending from one said side edge fusion section toward the other said side edge fusion section,
A partition fusion splicing portion provided so as to partition between the wide fusion splicing portions is provided so as to form an article inlet / outlet having a different width provided with each chuck portion.
A first fusion portion in which the wide fusion portion reaches from the end edge of the side edge fusion portion to the end edge of the chuck portion.
Along the upper edge of the first fused portion, the side edge fused portion extends in the direction of the chuck portion side edge of the first fused portion, and the chuck portion side edge thereof is the chuck of the first fused portion. It has a second fused portion that is notched in a stepped or tapered shape with respect to the edge on the side of the portion.
The partition fusion portion has the same width as the vertical width of the first fusion portion, one end reaches the end edge of the chuck portion of one of the article inlets / outlets sandwiching the partition fusion portion, and the other end reaches the partition fusion portion. The first partition fusion splicer that reaches the edge of the chuck part of the other article entrance / exit that sandwiches the landing part,
Two second units having a symmetrical shape centered on the slit separated from the upper edge of the first partition fusion section by a slit reaching the upper edge side edge of the bag body portion above the first partition fusion section. Has two partition fusion sections,
The narrow portion in which the second partition fusion portion extends from the upper edge of the first partition fusion portion to the upper edge of the slit along the slit, and the first partition fusion portion from the lower end side of the narrow portion. A wide portion having a shape extending along the upper edge of the portion in a direction away from the slit and having the extending end cut out in a stepped or tapered shape with respect to the edge of the first partition fused portion. Prepare,
The side edge fusion portions on both sides have a length that protrudes upward from the upper end of the bag main body portion, and at the upper end of the portion of the side edge fusion portions on both sides that protrudes upward from the bag main body portion. , Connected by the upper edge fusion part,
A cut line is provided between the upper edge fusion portion and the entrance / exit of the article as a guide for forming the bag main body portion by cutting, and the upper end of the slit reaches the cut line. A bag with a zipper.

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