JP6413173B2 - Fitting tool and bag with fitting tool - Google Patents

Description

  The present invention relates to a fitting tool and a bag body with a fitting tool.

  In various fields such as foods, medicines, miscellaneous goods, etc., bag bodies with fitting tools in which fitting tools for opening and closing the opening portions are attached to the inner surface in the vicinity of the opening portions of the bag body are widely used. As the fitting tool, for example, a male side fitting part of a protrusion and a female side fitting part detachably fitted to the male side fitting part on each facing surface of a pair of strip-shaped base materials, A fitting provided respectively along the longitudinal direction of these base materials is known (Patent Document 1). In the bag body with a fitting tool, the fitting tool is attached to the inner surface of the bag body in the vicinity of the opening, and the male fitting portion and the female fitting portion of the fitting tool are fitted to each other. The body opening can be freely opened and closed.

By the way, in applications such as portable ashtrays, it is required that fittings attached to the bag body can be easily fitted with one hand in addition to being able to be fitted enough so that contents such as ash do not jump out. It is done.
However, the conventional fitting tool such as Patent Document 1 grips the opening ends of the bag bodies to which the fitting tool is attached, and pulls them in the direction of separating them, so that the male fitting part is female. It is a form that is supposed to be detached from the side fitting portion and opened, and it is difficult to open with one hand.

JP 2003-160147 A

  An object of the present invention is to provide a fitting that can be easily opened with one hand in addition to having a sufficient fitting strength, and a bag with a fitting provided with the fitting.

A fitting tool of the present invention comprises a pair of belt-like base materials, and a pair of fitting portions that are provided along the longitudinal direction on respective opposing surfaces of the pair of base materials and are detachably fitted to each other. A distance D between the outer surfaces of the pair of base materials when the pair of base materials is equal to or greater than the rigidity of each of the pair of mating portions. The ratio (L / D) of the width L of the pair of base materials is 4 to 10.
In the fitting device of the present invention, it is preferable that the pair of base materials contain polypropylene, and the pair of fitting portions contain at least one selected from the group consisting of polyethylene and polypropylene elastomer.

  Moreover, the bag body with a fitting tool of this invention comprises the bag main body which accommodates the contents, and the fitting tool of this invention provided in the inner surface of the opening part of this bag main body.

In addition to having sufficient fitting strength, the fitting of the present invention can be easily opened with one hand.
Moreover, the bag body with a fitting tool of this invention is equipped with the fitting tool which has sufficient fitting strength, and can be easily opened with one hand.

It is the perspective view which showed an example of the fitting tool of this invention. It is an AA cross section of the fitting tool of FIG. It is the front view which showed an example of the bag body with a fitting tool of this invention. It is a BB cross section of the bag body with a fitting tool of FIG. It is the perspective view which showed a mode that the bag body with a fitting tool of FIG. 3 was opened. It is sectional drawing which showed the other example of the fitting tool of this invention. It is sectional drawing which showed the other example of the fitting tool of this invention.

<First Embodiment>
[Fitting tool]
Hereinafter, an example of the fitting of the present invention will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the fitting 10 includes a pair of first base material 11 and second base material 12 in the form of strips, and the male side of the protrusion provided on the first base material 11. It has the fitting part 13 and the female side fitting part 14 which is provided in the 2nd base material 12, and fits to the male side fitting part 13 so that attachment or detachment is possible.
The first base material 11 and the second base material 12 in the fitting tool 10 have the same length and width.
The male side fitting portion 13 is provided on the facing surface 11 a of the first base material 11 along the longitudinal direction of the first base material 11. The female side fitting portion 14 is provided on the facing surface 12 a of the second base 12 along the longitudinal direction of the second base 12.

In the fitting 10, the rigidity of both the first base material 11 and the second base material 12 is equal to or greater than the rigidity of each of the male side fitting part 13 and the female side fitting part 14. The rigidity of both the first base material 11 and the second base material 12 is equal to or higher than the respective rigidity of the male side fitting part 13 and the female side fitting part 14 and the bending elastic modulus of the first base material 11 It means that both of the bending elastic moduli of the second base material 12 are equal to or higher than the bending elastic modulus of the male side fitting portion 13 and higher than the bending elastic modulus of the female side fitting portion 14.
In the fitting tool 10, the distance between the outer surface 11 b of the first base member 11 and the outer surface 12 b of the second base member 12 when the male fitting portion 13 and the female fitting portion 14 are fitted. The ratio (L / D) of the width L of the first base material 11 and the second base material 12 to D is 4-10.

  When the fitting tool 10 satisfies the conditions described above, as shown in FIG. 1, force is exerted in a direction in which the first base material 11 is contracted from both ends 11 c and 11 d in the longitudinal direction of the first base material 11. Is added, the first base member 11 is easily bent so that the outer surface 11b side protrudes. Similarly, when a force is applied in the direction in which the second base 12 is contracted from both ends 12c and 12d in the longitudinal direction of the second base 12, the second base 12 protrudes from the outer surface 12b. Easy to bend. Moreover, the male side fitting part 13 tends to detach | leave from the female side fitting part 14 with the force which deform | transforms so that the 1st base material 11 and the 2nd base material 12 may space apart. Thus, both the end portions 11c and 11d in the longitudinal direction of the first base material 11 and both the end portions 12c and 12d in the longitudinal direction of the second base material 12 are gripped with one hand, and the first base By compressing the material 11 and the second base material 12 in the longitudinal direction, the male side fitting part 13 can be detached from the female side fitting part 14.

  The ratio (L / D) is 4 to 10, preferably 5 to 8. If the ratio (L / D) is equal to or higher than the lower limit value, it is easy to open the fitting 10 with one hand. If the ratio (L / D) is less than or equal to the upper limit value, the fitting strength between the male fitting portion 13 and the female fitting portion 14 can be sufficiently obtained.

The width L of the 1st base material 11 and the 2nd base material 12 is not specifically limited, When the magnitude | size of the base material which can be opened with one hand is considered, 5-20 mm is preferable and 7-15 mm is more. preferable. If the width L is equal to or greater than the lower limit value, it is easy to open the fitting 10 with one hand. If the said width | variety L is below an upper limit, the fitting intensity | strength with the male side fitting part 13 and the female side fitting part 14 is fully easy to be obtained.
In addition, although the width | variety of the 1st base material 11 of this example and the width | variety of the 2nd base material 12 is the same, the fitting tool of this invention is not limited to a thing with the same width | variety of a pair of base material. The ratio (L / D) of the width L of the first base material to the distance D and the ratio (L / D) of the width L of the second base material to the distance D are within the ranges described above. If so, the width L of the first base material and the width L of the second base material may be different.

The distance D between the outer surface 11b of the first base material 11 and the outer surface 12b of the second base material 12 when the male side fitting portion 13 and the female side fitting portion 14 are fitted is 1.2-2. 5 mm is preferable, and 1.4 to 2.0 mm is more preferable. If the distance D is equal to or greater than the lower limit value, the fitting strength between the male fitting portion 13 and the female fitting portion 14 can be sufficiently obtained. If the distance D is equal to or less than the upper limit value, the fitting tool 10 can be easily opened with one hand.
The distance D is linear in a state in which the male fitting portion 13 and the female fitting portion 14 are fitted, and the first base material 11 and the second base material 12 are not bent. This means the distance between the outer surface 11b of the first base material 11 and the outer surface 12b of the second base material 12 in the portion. The distance D is a distance between the outer surface 11b of the first base material 11 and the outer surface 12b of the second base material 12 in the portion where the male side fitting portion 13 and the female side fitting portion 14 are provided. Is required.

The difference (Ea−Ec) between the bending elastic modulus Ea of the first base material 11 and the bending elastic modulus Ec of the male side fitting portion 13 is preferably 0 to 600 MPa, and more preferably 100 to 400 MPa. The greater the difference in bending elastic modulus (Ea-Ec), the easier it is to open the fitting 10 with one hand. When the difference in bending elastic modulus (Ea-Ec) is smaller for Ea, it becomes difficult to open with one hand. The difference (Ea−Ed) between the bending elastic modulus Ea of the first base material 11 and the bending elastic modulus Ed of the female side fitting portion 14, the bending elastic modulus Eb of the second base material 12 and the male side fitting portion 13. The difference between the bending elastic modulus Ec (Eb−Ec) and the difference between the bending elastic modulus Eb of the second substrate 12 and the bending elastic modulus Ed of the female side fitting portion 14 (Eb−Ed) is also the difference (Ea− For the same reason as in Ec), it is preferably within the above range.
The bending elastic modulus is a value defined by JIS K7171. Specifically, the bending elastic moduli Ea to Ed of the first base material 11, the second base material 12, the male side fitting portion 13, and the female side fitting portion 14 are made of materials that form them. It is the value measured based on JIS K7171 using each produced strip-shaped test piece.

The material of the first base material 11 and the second base material 12 may be any material as long as a rigidity equal to or higher than the rigidity of the male side fitting part 13 and the female side fitting part 14 is obtained. It is preferable to contain at least one selected from the group consisting of polyethylene and polypropylene.
As the 1st base material 11 and the 2nd base material 12, the laminated film which has a heat resistant layer which consists of polypropylene, and the heat seal layer of the outer surface 11b, 12b side rather than this heat resistant layer is more preferable. The polypropylene forming the heat-resistant layer is particularly preferably 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.

In the laminated film forming the first base material 11 and the second base material 12, the rigidity of both the first base material 11 and the second base material 12 is the male side fitting part 13 and the female side fitting part. A barrier layer may be provided between the heat-resistant layer and the heat seal layer as long as it is within the range of 14 or more.
Examples of the material for the barrier layer include polyvinyl alcohol.
Further, the first base material 11 and the second base material 12 may be added with known additives such as a stabilizer, an antioxidant, a lubricant, an antistatic agent, and a colorant as necessary. .
The material of the 1st base material 11 and the 2nd base material 12 may be the same, and may differ.

The male side fitting portion 13 is provided on the facing surface 11 a of the first base material 11 along the longitudinal direction of the first base material 11. The male fitting portion 13 has a trunk portion 13a that rises from the facing surface 11a of the first base member 11, and a head portion 13b that is provided on the distal end side of the trunk portion 13a and has a substantially semicircular cross section larger than the trunk portion 13a. ing.
The female side fitting portion 14 is provided on the facing surface 12 a of the second base 12 along the longitudinal direction of the second base 12. The female-side fitting portion 14 rises from the facing surface 12a of the second base member 12 in a circular arc shape and has a pair of first arm portions 14a and a first arm portion whose tip end portion is folded back to the second base member 12 side. 2 arm portions 14b. The female fitting portion 14 has a recess 14c formed by a first arm portion 14a and a second arm portion 14b.
The male fitting portion 13 and the female fitting portion 14 can be detachably fitted by fitting the head portion 13b of the male fitting portion 13 into the recess 14c of the female fitting portion 14. It has become.

  The cross-sectional shape of the male side fitting part 13 and the female side fitting part 14 can repeat opening and closing of the opening part of a bag main body by attaching / detaching the male side fitting part 13 and the female side fitting part 14 mutually. I just need it. For example, the female side fitting portion has a neck portion that rises from the facing surface 12a of the second base member 12, and a pair of arm portions that rise from the neck portion in a circular arc shape. The female side fitting part in which the concave streak which fits the head of a joint part may be formed may be sufficient.

As materials of the male side fitting part 13 and the female side fitting part 14, the rigidity of both the first base material 11 and the second base material 12 is that of the male side fitting part 13 and the female side fitting part 14. It is sufficient if it has more than each rigidity, and it is preferable to contain at least one selected from the group consisting of polyethylene and polypropylene elastomer.
As polyethylene which forms the male side fitting part 13 and the female side fitting part 14, linear low density polyethylene is especially preferable.

Moreover, the male side fitting part 13 and the female side fitting part 14 are both rigid in both the first base material 11 and the second base material 12 so that the male side fitting part 13 and the female side fitting part 14 are rigid. Polypropylene may be contained as long as it is in a range that is equal to or greater than the rigidity. For example, the male side fitting part 13 and the female side fitting part 14 may be formed of a mixture of polypropylene and polyethylene or a mixture of polypropylene and polypropylene elastomer.
The material of the male side fitting part 13 and the female side fitting part 14 may be 1 type, and 2 or more types may be sufficient as it.

  The manufacturing method of the fitting tool 10 is not particularly limited. For example, the material for forming the first base material 11 and the second base material 12 and the male side fitting portion 13 and the female side fitting portion 14 are formed. Two-color molding combined with the material to be used.

[Bag with fitting]
Hereinafter, as an example of a bag body with a fitting tool of the present invention, a bag body with a fitting tool 1 (hereinafter referred to as “bag body 1”) provided with the fitting tool 10 described above will be described.
As shown in FIG. 3, the bag body 1 according to the present embodiment includes a bag main body 20 that houses the contents, and a fitting tool 10 that is attached to the inner surface of the upper portion of the bag main body 20 along the lateral direction. doing.
The bag body 20 is a bag in which the first film material 21 and the second film material 22 are overlapped, and the side edge portion 23 and the bottom edge portion 24 of both of them are heat sealed, so that the upper portion is opened. It is in the shape. The upper opening of the bag body 20 can be opened and closed by the fitting tool 10.

  In the bag body 1, as shown in FIG. 4, the outer surface 11 b of the first base material 11 of the fitting tool 10 is welded to the first film material 21 of the bag main body 20, and the second base of the fitting tool 10. The outer surface 12 b of the material 12 is welded to the second film material 22 of the bag body 20.

  The shape of the bag body 20 is rectangular in this embodiment. However, the shape of the bag body 20 is not limited to a rectangle. Further, the size of the bag body 20 is not particularly limited, and may be appropriately selected depending on the contents accommodated in the bag body 20 and is preferably a size that can be easily gripped with one hand and easily applied to the fitting tool 10.

The 1st film material 21 and the 2nd film material 22 which form the bag main body 20 should just be what can weld the fitting 10 by heat seal, and are the lamination | stacking which has a sealant layer and a base material layer at least from an inner surface side. A film is preferred.
As a base material layer, the layer formed with biaxially-stretched nylon, biaxially-stretched polypropylene, etc. is mentioned.
Examples of the sealant layer include a layer formed of linear low density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, ionomer and the like.
The laminated film may be provided with a functional layer such as a barrier layer.
Moreover, the 1st film material 21 and the 2nd film material 22 may be a single layer film which consists only of a sealant layer.

The bag body 1 can seal an upper part so that opening and closing is possible by fitting the male side fitting part 13 and the female side fitting part 14 of the fitting 10.
As described above, in the fitting 10, the rigidity of both the first base material 11 and the second base material 12 is equal to or greater than the rigidity of the male side fitting part 13 and the female side fitting part 14, Since the ratio (L / D) is controlled within a specific range, the force that compresses the first base material 11 and the second base material 12 along the longitudinal direction is the male side fitting portion 13 and the female side. It works efficiently as a force for separating the side fitting portion 14. Therefore, by gripping both side edge portions 23 of the portion of the bag body 20 of the bag body 1 to which the fitting tool 10 is attached with one hand and applying a force so as to crush in the longitudinal direction of the fitting tool 10, As shown in FIG. 5, the upper part of the bag 1 can be easily opened.

<Other embodiments>
In the fitting tool of the present invention, the rigidity of both of the pair of base materials is equal to or greater than the rigidity of each of the pair of fitting portions, and the distance between the outer surfaces of the pair of base materials when the pair of fitting portions are fitted. If ratio (L / D) of width L of a pair of base materials to D is 4-10, it will not be limited to above-mentioned fitting tool 10. If the rigidity of both of the pair of base materials is equal to or greater than the rigidity of each of the pair of fitting portions and the ratio (L / D) is 4 to 10, even one-handed fitting tool other than the fitting tool 10 can be used. Can be opened easily.

For example, the fitting tool of the present invention may be the fitting tool 10A illustrated in FIG. FIG. 6 is a cross-sectional view of the fitting 10A when cut along the width direction. The same parts in FIG. 6 as those in FIG.
The fitting tool 10A has the first base material 11A and the second base material 12A instead of the first base material 11 and the second base material 12, except that the fitting 10A has the first base material 11A and the second base material 12A. It is the same as compound 10.
Facing surface 11a of the first substrate 11A is, the lateral direction of the central portion 11e of the thickness _{d 3} is a side end portion 11f of the first substrate 11A, to be thinner than the thickness _d 1, _{d 2} of 11g It is concavely curved. Similarly, the opposing surface 12a of the second substrate 12A has a thickness _{d 6} is a side end portion 12f of the lateral direction of the central portion 12e of the second substrate 12A, thinner than the thickness _d 4, _{d 5} of 12g It is curved in a concave shape.

  Since the opposing surface 11a of the first base material 11A and the opposing surface 12a of the second base material 12A are curved in a concave shape, the first base material 11A and the second base material 12A are moved in the longitudinal direction thereof. When a force is applied so as to be compressed along, the force acts as a force for separating the first base material 11A and the second base material 12A more efficiently. Therefore, the fitting tool 10 </ b> A is easier to open with one hand than the fitting tool 10.

Side end portion 11f of the first substrate 11A, the ratio of the thickness _{d 3} of the central portion 11e to the thickness _d 1, _{d 2} of 11g is preferably 1-1 / 10, more preferably from 8 / 10-5 / 10 . If the said ratio is more than a lower limit, sufficient fitting strength is easy to be obtained. If the said ratio is below an upper limit, it will become easy to open 10 A of fitting tools with one hand.
For the same reason, the side end portion 12f of the second substrate 12A, the ratio of the thickness _{d 6} of the central portion 12e to the thickness _d 4, _{d 5} of 12g is 1-1 / 10 are preferred, 8/10 ˜5 / 10 is more preferable.

  In fitting tool 10A, male side fitting part 13 is provided in central part 11e in opposing surface 11a of the 1st substrate 11A, and female side fitting is carried out in central part 12e in opposing surface 12a of the 2nd substrate 12A. A joint portion 14 is provided.

Moreover, the fitting tool of this invention is not limited to what has the above described male side fitting part 13 and female side fitting part 14. FIG. For example, the fitting tool of the present invention may be the fitting tool 10B illustrated in FIG. FIG. 7 is a cross-sectional view of the fitting 10B when cut along the width direction. In FIG. 7, the same parts as those in FIG.
The fitting 10B has the male fitting portion 13A and the female fitting portion 14A instead of the male fitting portion 13 and the female fitting portion 14, except that the fitting 10B has the male fitting portion 14A. It is the same as compound 10.

  The male side fitting portion 13 </ b> A is formed on the facing surface 11 a of the first base material 11 along the longitudinal direction of the first base material 11. The male side fitting portion 13A includes a trunk portion 13a that rises from the facing surface 11a of the first base member 11, a head portion 13c that is formed on the distal end side of the trunk portion 13a, and has a substantially circular cross-section than the trunk portion 13a. Have 13 A of male side fitting parts are the same forms as the male side fitting part 13 of 1st Embodiment except the cross-sectional shape when the head 13c is cut | disconnected along the width direction is a substantially circular shape.

  14 A of female side fitting parts are formed in the opposing surface 12a of the 2nd base material 12 along the longitudinal direction of the 2nd base material 12. As shown in FIG. 14 A of female side fittings consist of the 1st arm part 14d and the 2nd arm part 14e which stand up from the opposing surface 12a of the 2nd base material 12 in cross-sectional arc shape. A concave strip 14f is formed in the female-side fitting portion 14A by the first arm portion 14d and the second arm portion 14e. 14A of female side fittings are female side fitting of 1st Embodiment except the front-end | tip part of each of the 1st arm part 14d and the 2nd arm part 14e not being turned back to the 2nd base material 12 side. It is the same form as the joint part 14.

The male side fitting portion 13A and the female side fitting portion 14A can be detachably fitted by fitting the head portion 13c of the male side fitting portion 13A into the recess 14f of the female side fitting portion 14A. It has become.
In the fitting 10B, when the male side fitting part 13A and the female side fitting part 14A are fitted, the inner surfaces of the first arm part 14d and the second arm part 14e of the female side fitting part 14A are The male side fitting part 13A is in close contact with the outer surface. Thereby, sufficient fitting strength is obtained.
Further, in the fitting tool 10B, the distal end portions of the first arm portion 14d and the second arm portion 14e of the female side fitting portion 14 are not folded back so as to be hooked on the male fitting portion 13. . Therefore, the fitting tool 10 </ b> B is easier to open with one hand than the fitting tool 10.

  Moreover, the fitting tool of this invention provides the several male side fitting part in each of the opposing surface of a pair of base material, and the head of the male side fitting part provided with two or more in the opposing surface of each base material You may hook and fit each other. Moreover, the fitting tool of this invention provides a female side fitting part in each of the opposing surface of a pair of base material, and hooks and fits the arms of the female side fitting part provided in the mutual base material. It may be a thing.

Moreover, a bag body with a fitting tool is not limited to what is equipped with the fitting tool 10, For example, 10A of fitting tools, the fitting tool 10B, etc. may be provided.
Moreover, the bag main body of the bag body with a fitting tool is not specifically limited, The bag main body of various forms known as a bag main body of a bag body with a fitting tool is employable. For example, in the bag body with a fitting tool of the present invention, all the periphery of the bag body is heat-sealed to be in a sealed state, and the opening formed by opening is opened by the fitting tool by using a cutting auxiliary line. You may enable it to be able to be opened and closed freely.
As the cutting auxiliary line, known ones can be adopted, for example, a weakened line in which the portion of the cutting auxiliary line is thinner than the other parts, a weakened line composed of perforations, and pores formed in rows A weakening line consisting of

EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited by the following description.
[Example 1]
The fitting 10 illustrated in FIG. 1 was produced by the following method.
As a material for forming the first base material 11 and the second base material 12, linear low density polyethylene was used. Moreover, linear low density polyethylene was used as a material which forms the male side fitting part 13 and the female side fitting part 14. FIG. Using the above-described material, two-color molding was performed using an extruder to obtain the fitting 10.
In the obtained fitting 10, the distance between the outer surface 11 b of the first base material 11 and the outer surface 12 b of the second base material 12 when the male fitting portion 13 and the female fitting portion 14 are fitted. D was 2.0 mm, the width L of the first base material 11 and the second base material 12 was 13 mm, and the ratio (L / D) was 6.5. Further, the bending elastic modulus Ea of the first base member 11 is 400 MPa, the bending elastic modulus Eb of the second base member 12 is 400 MPa, the bending elastic modulus Ec of the male fitting portion 13 is 200 MPa, and the female fitting portion 14. The flexural modulus Ed of was 200 MPa.
Material forming first base material 11 and second base material 12, material forming male side fitting part 13 and female side fitting part 14, distance D, width L, ratio (L / D), and Table 1 shows the flexural moduli Ea to Ed.

[Examples 2 to 3 and Comparative Examples 1 and 2]
Material forming first base material 11 and second base material 12, material forming male side fitting part 13 and female side fitting part 14, distance D, width L, ratio (L / D), and A fitting was produced in the same manner as in Example 1 except that the respective flexural moduli Ea to Ed were changed as shown in Table 1.

[Evaluation method]
As the first film material 21 and the second film material 22, rectangular multilayer films (120 mm long, 80 mm wide, 112 μm thick) made of linear low density polyethylene (thickness 100 μm) / polyethylene terephthalate (thickness 12 μm) are used. Moreover, the bag body 1 was obtained by making a bag using a side seal bag making machine with a zipper, using the fittings obtained in each example.
The part to which the fitting tool in both the side edge parts 23 in the bag body 1 was gripped with one hand, a force was applied so that the fitting tool could be compressed, and the ease of opening was evaluated according to the following criteria.
“Good (good)”: Can be easily opened with one hand.
"X (defect)": It is difficult to open with one hand.

Table 1 shows the evaluation results of the ease of opening of each example.
In addition, the symbol in Table 1 has the following meaning.
LLDPE: linear low density polyethylene.
PP: Polypropylene.

  As shown in Table 1, in Examples 1 to 3, in which both the rigidity of the pair of base materials is equal to or greater than the rigidity of the pair of fitting portions and the ratio (L / D) is 4 to 10, the ratio (L / Compared with Comparative Example 1 in which D) was less than 4, Comparative Example 2 with more than 10 could be easily opened with one hand.

DESCRIPTION OF SYMBOLS 1 Bag body with fitting tool 10, 10A, 10B Fitting tool 11, 11A 1st base material 11a Opposing surface 11b Outer surface 12, 12A 2nd base material 12a Opposing surface 12b Outer surface 13, 13A Male side fitting part 14 , 14A Female side fitting portion 20 Bag body 21 First film material 22 Second film material 23 Side edge portion 24 Bottom edge portion

Claims (3)

A pair of belt-like base materials, and a pair of fitting portions that are provided along the longitudinal direction on the opposing surfaces of the pair of base materials and detachably fit to each other;
The rigidity of both of the pair of base materials is equal to or greater than the rigidity of each of the pair of fitting portions,
The fitting tool in which the ratio (L / D) of the width L of the pair of base materials to the distance D between the outer surfaces of the pair of base materials when the pair of fitting portions are fitted is 4 to 10. . The pair of substrates contains polypropylene;
The fitting tool according to claim 1, wherein the pair of fitting portions contain at least one selected from the group consisting of polyethylene and polypropylene elastomer.   The bag body with a fitting tool which comprises the bag main body which accommodates the contents, and the fitting tool of Claim 1 or 2 provided in the inner surface of the opening part of this bag main body.

Images