JP7285642B2 - fitting and bag body with fitting - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fitting and a bag body with the fitting.

2. Description of the Related Art In various fields such as food, medicine, and miscellaneous goods, a bag with a fitting attached to the inner surface near the opening of the bag with a fitting for freely opening and closing the opening is widely used. As the fitting tool, a first fitting portion and a second fitting portion that are detachably fitted to each other are provided along the longitudinal direction of the pair of strip-shaped base materials, and the pair of base materials are arranged to face each other. An example of fitting is given. For example, both the first fitting part and the second fitting part have a plurality of parallel male claws, and the heads of the male claws are inserted between the two opposing male claws. Detachable fittings that are hooked and fitted together are known.

In such a bag with a fitting, the opening formed in the bag can be closed by fitting the first fitting portion and the second fitting portion of the fitting. Further, by grasping the respective open ends of the bag body to which the fittings are attached and pulling them away from each other to release the fitting between the first fitting portion and the second fitting portion, The bag can be opened again. In this way, the bag with fittings can be opened and closed repeatedly.

On the other hand, for example, in bags with fittings used for packaging foods, medicines, and miscellaneous goods that require moisture-proof and oxygen-proof properties, it is necessary to fit the bags in order to maintain a sealed state during product distribution and sales. A bag body with fittings is used in which the opening end outside the fittings is sealed, the product is opened when the product is consumed, and then the bag body is opened and closed with the fittings. As such a bag body with fittings, there is known a bag body provided with an easy-to-cut resin portion that allows the bag body to be easily cut (Patent Document 1, Patent Document 2, Patent Document 3). Specifically, by providing an easy-to-cut resin portion between the fitting and the sealing portion at the opening end of the bag, and tearing the easy-to-cut resin portion from a notch formed at the end of the bag, The opening end of the bag can be easily cut to open the bag with fittings. A bag with fittings having an easy-to-cut function and a notch can cut the open end in a straight line, and can prevent the fittings from being damaged due to deviation of the cutting line during cutting.

Japanese Patent Application Laid-Open No. 2004-244027 JP 2012-201369 A WO2011/070996

The bags described in Patent Documents 1 to 3 are formed by forming a resin portion having an easy-to-cut function and fittings on a resin film, and heat-sealing the edges of the resin film to form a bag. , cut the end of the bag to form a notch. Therefore, if the position of the notch deviates from the resin portion having the easy-to-cut function, smooth cutting is hindered. Therefore, it is necessary to improve the accuracy of alignment between the resin portion having the easy-to-cut function and the notch.
In addition, since the easy-to-cut resin portion is easily cut finely in the cutting direction, there is a problem that the resin near the cut surface separates into filaments after being torn, and filiform waste is likely to be generated. In addition, in the bags disclosed in Patent Documents 2 and 3, when the easy-cutting resin portion is torn, the resin near the cut surface may be stretched and fuzzy. When such filamentous waste and fluff are generated on the cut surface, the appearance deteriorates, and the filamentous waste and fluff interfere with taking out the contents contained in the bag body. In particular, since the bag with fittings is used by repeatedly opening and closing it, it is generally expected to be used for a long period of time.

An object of the present invention is to provide a fitting that can be easily torn along an easy-to-cut portion and that can form a beautiful cut surface after tearing, and a bag body with the fitting. do.

The present invention has the following configurations.
[1] A first fitting member including a first fitting portion provided along the longitudinal direction of a strip-shaped first base material;
a second fitting member provided along the longitudinal direction of a strip-shaped second base material and having a second fitting portion detachably fitted to the first fitting portion;
an easy-to-cut portion provided in parallel with the first fitting portion or the second fitting portion on the first base material and the second base material;
a connecting portion formed between the easy-to-cut portion and the first fitting portion or the second fitting portion;
The easy-to-cut portion is composed of one ridge that protrudes in the thickness direction of the base material and one groove that is adjacent to the ridge in the width direction without being separated from the ridge , and , between the ridges and the grooves, there is no flat region that is flush with the surface of the first substrate facing the second substrate, and the ridges and the grooves the distance between is zero, and
The fitting tool, wherein the easy-to-cut portion can be cut along the concave groove by an external force.
[2] The fitting according to [1], wherein the concave groove is provided adjacent to the connecting portion.
[3] a bag body including an accommodating portion for accommodating contents;
and the fitting according to [1] or [2] attached near the opening on the inner surface of the bag body,
A bag body with a fitting, wherein the easy-to-cut portion is provided on the opening side of the bag body, and the first fitting member and the second fitting member are provided on the accommodating portion side.
[4] The ridge is provided on the opening side of the bag body,
The bag body with a fitting according to the above [3], wherein the concave groove is provided on the accommodating portion side.

It is possible to provide a fitting that can be easily torn along an easy-to-cut portion and that can form a beautiful cut surface after tearing, and a bag body with fitting.

It is the perspective view which showed the fitting tool which concerns on one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; It is sectional drawing in the state which the fitting tool which concerns on one Embodiment of this invention fitted. 1 is a front view of a bag with a fitting according to one embodiment of the present invention; FIG. 1 is a perspective view of a bag body with a fitting according to one embodiment of the present invention; FIG. FIG. 5 is a cross-sectional view taken along the line BB of FIG. 4; It is sectional drawing which showed the 1st modification of the fitting tool which concerns on one Embodiment of this invention. It is sectional drawing which showed the 2nd modification of the fitting tool which concerns on one Embodiment of this invention. It is sectional drawing which showed the 3rd modification of the fitting tool which concerns on one Embodiment of this invention. It is sectional drawing which showed the 4th modification of the fitting tool which concerns on one Embodiment of this invention.

[Fitting tool]
A fitting according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG.
As shown in FIGS. 1 to 3, the fitting 10 according to the present embodiment includes a pair of strip-shaped first fitting members 12 and second fitting members 14, an easy-to-cut portion 13, and a connecting portion 15. , is equipped with The easy-to-cut portion 13 and the connecting portion 15 are provided on the first fitting member 12 and the second fitting member 14, respectively. The fitting 10 is configured such that the first fitting portion 18 of the first fitting member 12 and the second fitting portion 22 of the second fitting member 14 are arranged to face each other and are detachably fitted. ing. The fitting 10 is used by being provided in an opening of a bag with fittings, which will be described later.

(First fitting member)
The first fitting member 12 has a strip-shaped first base material 16 , a first fitting portion 18 , an easy-to-cut portion 13 , and a connecting portion 15 . The first fitting portion 18 extends, for example, along the longitudinal direction of the first base material 16 .

The first base material 16 is not particularly limited, and those used for base materials of known fittings can be used. Examples thereof include polyolefin-based resins such as ethylene-based polymers and propylene-based polymers. The first base material 16 is preferably a base material made of a laminated film. As the laminated film, for example, a film in which a heat-resistant layer and a heat seal layer are laminated from the facing surface 16a facing the second substrate 20 can be used. Also, the first base material 16 may have a barrier layer between the heat-resistant layer and the heat seal layer.

Materials for the heat-resistant layer include biaxially oriented nylon and biaxially oriented polypropylene.
Materials for the heat seal layer include linear low-density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, ionomer, and the like.
Polyvinyl alcohol etc. are mentioned as a material of a barrier layer.

The first base material 16 may be composed of one kind of resin, or may be composed of a resin composition containing two or more kinds of resins. In addition, known additives such as stabilizers, antioxidants, lubricants, antistatic agents and colorants may be added as necessary.
The first base material 16 is not limited to a base material made of a laminated film, and may be a base material made of a single layer film.

The first base material 16 and the second base material 20 may be formed of resin having easy-to-cut properties. A polyolefin-based resin composition is used as the resin having an easy-to-cut function. Crystalline polyolefin resins constituting the polyolefin resin composition include ethylene-based polymers and propylene-based polymers. The ethylene polymer is not particularly limited, and may be an ethylene homopolymer, an ethylene/α-olefin copolymer, an ethylene/vinyl acetate copolymer, an ethylene/acrylic acid copolymer, or a copolymer with a metal salt thereof. Examples include coalescence. Examples of the propylene-based polymer include propylene homopolymers, random copolymers or block copolymers of propylene and ethylene or other olefins having 4 or more carbon atoms. In addition, the first base material 16 and the second base material 20 may be formed entirely of a resin having an easy-to-cut function, or the easy-to-cut portion 13 may be formed of a resin having an easy-to-cut function. .

The first fitting portion 18 is provided on the facing surface 16a of the first base material 16 facing the second base material 20 of the second fitting member 14, as shown in FIGS. A first fitting portion 18 is provided on the side of a first side end 16c along the longitudinal direction of the strip-shaped first base material 16, and the second side end 16b and the first fitting portion 18 extend parallel to the first side end 16c. The connecting portion 15 and the easy-to-cut portion 13 are provided in parallel in the longitudinal direction between them.

The first fitting portion 18 includes a trunk 18a rising from the facing surface 16a of the first base material 16, and a head 18b provided on the tip side of the trunk 18a and larger than the trunk 18a. The first fitting portion 18 is a male fitting portion, and is configured such that the head portion 18b is fitted into a concave portion 22c of the second fitting portion 22, which will be described later.

The head portion 18b of the first fitting portion 18 in this example has a shape in which a portion 18c on the side of the second side end 16b protrudes more than a portion 18d on the side of the first side end 16c. With this configuration, when the first fitting portion 18 and the second fitting portion 22 are fitted to each other in the bag body as will be described later, the storage portion side in which the contents are stored is more fitted than the opening portion side. The mating strength is increased, and even if the internal pressure of the bag body increases, the mating between the first fitting portion 18 and the second fitting portion 22 becomes difficult to be released. Further, the fitting strength is relatively low on the opening side, and the fitting between the first fitting portion 18 and the second fitting portion 22 can be easily released by manually applying force.

The shape of the first fitting portion 18 may be any shape as long as it can be fitted with the second fitting portion 22, and a known shape can be adopted. The material of the first fitting portion 18 is not particularly limited, and for example, the same material as that of the first base material 16 can be used.

As shown in FIGS. 1 to 3, the easy-to-cut portion 13 is provided in parallel with the first fitting portion 18 on the facing surface 16a of the first base material 16. As shown in FIGS. The easy-to-cut portion 13 is composed of one protruding line 11 and one concave groove 19 formed adjacent to the protruding line 11 .

The ridges 11 are formed so as to protrude from the facing surface 16 a of the first base material 16 . As shown in FIGS. 2 and 3, the ridges 11 are continuous in the longitudinal direction of the protrusions having a substantially triangular cross section (AA cross section shown in FIG. 1) orthogonal to the longitudinal direction of the first base material 16. formed by

The concave groove 19 is a groove where the thickness of the first base material 16 becomes thin adjacent to the ridge 11 . The recessed groove 19 is a groove whose cross-section perpendicular to the longitudinal direction of the first base material 16 (the AA cross section shown in FIG. 1) is recessed into a substantially triangular shape. The concave groove 19 is formed continuously in the longitudinal direction of the first base material 16 .

The ridges 11 and the grooves 19 are formed adjacent to each other in the lateral direction. Adjacent here means that the ridges 11 and the grooves 19 are continuously provided without being spaced apart in the lateral direction. In other words, there is no flat area flush with the facing surface 16a between the ridge 11 and the groove 19, and the distance between the ridge 11 and the groove 19 is zero. In this embodiment, as shown in FIGS. 2 and 3, the slope 11a of the ridge 11 that is inclined with respect to the facing surface 16a and the slope 19a of the groove 19 that is inclined with respect to the facing surface 16a. form a continuous slope with the same inclination angle. The ridges 11 and the grooves 19 need only be provided adjacent to each other, and the slopes 11a of the ridges 11 and the slopes 19a of the grooves 19 may have different angles of inclination.

The connecting portion 15 is formed between the easy-to-cut portion 13 and the first fitting portion 18 . The connecting portion 15 is a region that connects the easy-to-cut portion 13 and the first fitting portion 18 . That is, the connecting portion 15 is provided adjacent to the first fitting portion 18 and the easy-to-cut portion 13 . In the example shown in FIGS. 2 and 3 , the connection portion 15 is a region of uniform thickness of the first base material 16 between the first fitting portion 18 and the groove 19 of the easy-to-cut portion 13 . Note that the thickness of the connection portion may not be uniform, and for example, the connection portion may have a gradient between the easy-to-cut portion 13 and the first fitting portion 18 .

(Second fitting member)
The second fitting member 14 has a strip-shaped second base material 20 , a second fitting portion 22 , an easy-to-cut portion 13 , and a connecting portion 15 . The second fitting portion 22 extends along the longitudinal direction of the second base material 20 .
The second base material 20 is not particularly limited, and includes, for example, the same base material as the first base material 16, and preferred embodiments are also the same.

The second fitting portion 22 is provided on the facing surface 20a of the first fitting member 12 facing the first base material 16, as shown in FIGS. The second fitting member 14 is provided with a second fitting portion 22 on the side of a first side end 20c along the longitudinal direction of a strip-shaped second base material 20, and a second side end extending parallel to the first side end 20c. Between 20b and first fitting portion 18, connecting portion 15 and easy-to-cut portion 13 are provided in parallel in the longitudinal direction.

The second fitting portion 22 includes a pair of first arm portion 22a and second arm portion 22b rising from the facing surface 20a of the second base material 20 in an arcuate cross section. A concave portion 22c extending in the longitudinal direction of the second base member 20 is formed between the first arm portion 22a and the second arm portion 22b in the second fitting portion 22 .

As shown in FIG. 3, the head portion 18b of the first fitting portion 18 fits into the recess 22c of the second fitting portion 22, and the head portion 18b of the first fitting portion 18 fits into the second fitting portion 22. As shown in FIG. The first fitting portion 18 and the second fitting portion 22 are fitted with each other by being locked at the tip portions of the first arm portion 22a and the second arm portion 22b. Further, by moving the first fitting portion 18 in the fitted state in a direction to separate it from the second fitting portion 22 , the head portion 18 b of the first fitting portion 18 moves to the second fitting portion 22 . The first arm portion 22a and the second arm portion 22b are detached while being pushed apart from the inside. In this manner, the first fitting portion 18 and the second fitting portion 22 are configured to be detachably fitted.

The shape of the second fitting portion 22 may be such that the opening of the bag body can be repeatedly opened and closed by attaching and detaching the first fitting portion 18 and the second fitting portion 22 to each other.
The material of the second fitting portion 22 is not particularly limited, and for example, the same material as that of the first base material 16 can be used.

As shown in FIGS. 1 to 3, the easy-to-cut portion 13 is provided on the facing surface 20a of the second base material 20 in parallel with the second fitting portion 22. As shown in FIGS. The easy-to-cut portion 13 is composed of one protruding line 11 and one concave groove 19 formed adjacent to the protruding line 11 . The easily cut portion 13 and the connecting portion 15 of the second fitting member 14 have the same configuration as the first fitting member 12 .

As shown in FIGS. 2 and 3, the easy-to-cut portion 13 and the connecting portion 15 are provided at positions facing each other when the first fitting portion 18 and the second fitting portion 22 are fitted.

Each ridge 11 formed on the first fitting member 12 and the second fitting member 14 is thicker than the thickness of the other part of the first base material 16, and the concave groove 19 is thicker than the other part of the first base material 16. thinner than the thickness of For example, as shown in FIG. 3, the thickness Tb of the base portion of the first base material 16 and the second base material 20 is 100 to 200 μm, and the thickness T11 is 400 μm, and the thickness T19 of the deepest portion of the recessed groove 19 and the thinnest portion is 40 μm. Thus, in the easy-to-cut portion 13, the difference between the maximum thickness T11 of the ridge 11 and the minimum thickness T19 of the groove 19 is equal to the thickness of the base portions of the first base material 16 and the second base material 20. Sufficiently large with respect to Tb.

A method for manufacturing the fitting of the present invention is not particularly limited, and a known method can be used. Examples of the method for manufacturing the first fitting member and the second fitting member include extrusion molding.

According to the fitting according to the present embodiment, since the easy-to-cut portion 13 is configured by the protruding line 11 and the concave groove 19 formed continuously from the protruding line 11 , it can be easily cut along the concave groove 19 . The first substrate 16 and the second substrate 20 are easily cuttable. That is, the easy-to-cut portion 13 is formed by continuously forming the ridges 11 and the grooves 19 , and does not include a flat region flush with the facing surface 16 a between the ridges 11 and the grooves 19 . For this reason, a portion having a large difference in thickness is formed between the first base material 16 and the second base material 20 . As a result, the stress concentrates on the groove 19 where the thickness of the base material is the thinnest, and the first base material 16 and the second base material 20 are cut along the groove 19 . In addition, as a result of the concentration of stress on the groove 19, a sharp cut surface is formed, and after the first base material 16 and the second base material 20 are torn along the groove 19, filiform waste and fluff are formed on the cut surface. can be prevented from occurring and a beautiful cut surface can be formed.

According to the fitting according to the present embodiment, since the easy-to-cut portion 13 is composed of one protruding line 11 and one concave groove 19, the first base material 16 and the second base material 20 are arranged in the longitudinal direction. When an external force is applied to tear and cut the base material along the line, stress is concentrated on the easy-to-cut part 1, and the line to be cut can be prevented from separating or deviating from a desired direction.

According to the fitting tool according to the present embodiment, since the connection part 15 is provided between the easy-to-cut part 13 and the first fitting part 18 or the second fitting part 22, the base material is cut along the longitudinal direction. It is possible to prevent stress from concentrating on the easy-to-cut portion 1 and breakage of the first fitting portion 18 or the second fitting portion 22 when an external force for cutting is applied.

[Bag body with fitting]
Hereinafter, as a bag with fittings according to the present embodiment, a fittings-equipped bag 1 (hereinafter sometimes referred to as "bag 1") provided with the fittings 10 described above will be described. .

In this embodiment, the bag body 40 has a rectangular shape. The shape of the bag body 40 is not limited to a rectangle. Also, the size of the bag body 40 is not particularly limited, and the shape and size may be appropriately selected according to the contents to be accommodated in the bag body 40 .
As shown in FIGS. 4 and 5, the bag body 1 includes a sealed bag body 40 for containing contents, and fittings attached to the upper inner surface of the bag body 40 along the lateral direction. 10.

The bag main body 40 is formed by superimposing a first film material 42 and a second film material 44, and heat-sealing all of their peripheral edge portions 46, thereby hermetically sealing them. Below the fitting 10 of the bag body 40 is an accommodating portion 47 in which contents are accommodated. The upper portion of the fitting 10 in the bag body 40 becomes an opening 52 after the bag 1 is opened. That is, the fitting 10 is attached near the opening 52 of the bag body.

The first film material 42 and the second film material 44 forming the bag body 40 may be any material that can weld the fitting 10 by heat sealing. preferable.
Examples of the substrate layer include biaxially oriented nylon and biaxially oriented polypropylene.
Examples of the sealant layer include linear low-density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, ionomer, and the like.
A functional layer such as a barrier layer may be provided in the laminated film. The first film material 42 and the second film material 44 may be single layer films consisting of only a sealant layer.

In the bag body 1, as shown in FIG. 6, the outer surface 16d of the first base material 16 of the fitting 10 is welded to the first film material 42 of the bag body 40, and the second base material 20 of the fitting 10 is welded. is welded to the second film material 44 of the bag body 40 .
In the fitting 10, the second side end 16b of the first base material 16 and the second side end 20b of the second base material 20 are arranged on the side of the opening 52 of the bag body 1, and The side end 16c and the first side end 20c of the second base material 20 are arranged on the housing portion 47 side of the bag body 1 .
Therefore, the first fitting portion 18 and the second fitting portion 22 are provided on the housing portion 47 side, and the easy-to-cut portion 13 is provided on the opening portion 52 side. Further, the protruding line 11 is provided on the opening 52 side, and the concave groove 19 is arranged on the accommodating section 47 side.

A cutting auxiliary line 48 is printed along the lateral direction on the outer surfaces of the first film material 42 and the second film material 44 at positions corresponding to the easy-to-cut portion 13 on the upper side of the fitting tool 10 in the bag body 40 . It is A notch 50 is formed on an extension line of the auxiliary cutting line 48 at the lateral end of the bag body 40 . Although the shape of the notch 50 is triangular in this example, it is not particularly limited, and may be semicircular, linear, or the like.

The bag body 1 can be unsealed by cutting and removing the upper portion of the bag body 40 from the notch 50 along the auxiliary cutting line 48 to form an opening 52 in the upper portion as shown in FIG. . The opening 52 formed in the bag body 1 can be repeatedly opened and closed by fitting or releasing the fitting between the first fitting part 18 and the second fitting part 22 of the fitting 10 .

[Manufacturing method of bag body with fitting]
The manufacturing method of the bag body 1 with a fitting includes the following steps.
Fitting tool forming step: A resin material forming fitting tools is supplied to an extruder, extruded by an annular die, cooled by an air cooling method or a water cooling method, and widened to form a film by an inflation method. Thereby, the first fitting member 12 or the second fitting member 14 having the first fitting portion 18 or the second fitting portion 22, the easy-to-cut portion 13, and the connecting portion 15 provided on the inner surface is formed. be done.
Fitting tool welding step: Fitting tool 10 is welded to the inner surfaces of first film material 42 and second film material 44 . In this step, the outer surface 16d of the first substrate 16 is heated to the first film by using a heating device such as a heat bar at a position avoiding the first fitting portion 18, the second fitting portion 22, and the easy-to-cut portion 13. The inner surface of the material 42 is welded, and the outer surface 20 d of the second base material 20 is welded to the inner surface of the second film material 44 .
Fusing process: The film materials 42 and 44 after the fitting tool welding process are folded so that the first fitting part 18 and the second fitting part 22 are opposed to each other, and are cut at a plurality of positions spaced apart in the length direction. The base of the bag body 1 with fittings is continuously formed by fusion cutting in the width direction.
Packaging process: The first film material 42 and the second film material 44 after being cut are fed into the packaging device with their inner surfaces facing each other, and the contents are placed between the first film material 42 and the second film material 44. The peripheral edges of the first film material 42 and the second film material 44 are heat-sealed while being sandwiched. Through this process, the bag main body 40 is sealed with the contents accommodated in the accommodating portion 47 .

Since the bag body 1 with fittings described above includes the fittings 10 having the easy-to-cut portions 13 , the sealed bag body 1 can be easily cut along the grooves 19 . In addition, by providing the easy-to-cut portion 13, it is possible to prevent filiform waste and fluff from being generated on the cut surface, and to form a beautiful cut surface.

The bag body with fittings according to the present embodiment shows an example in which the fittings 10 are welded to the first film material 42 and the second film material 44, but the configuration of the bag body with fittings is limited to this. Instead, the first fitting portion and the second fitting portion may be directly formed on the inner surface of the film material forming the bag body.

According to the method for manufacturing a bag with a fitting described above, the fitting 10 can be easily torn along the easy-to-cut portion 13 and can form a beautiful cut surface after tearing. And the fitting-equipped bag body 1 can be obtained easily.

In addition, the manufacturing method of the bag body with a fitting is not limited to the manufacturing method of the bag body with a fitting mentioned above. For example, in the method of manufacturing a bag with fittings, the cylindrical body obtained in the molding step may be wound once. Moreover, you may implement a drawing process, a printing process, etc. as needed.

The configuration of the easily cut portion of the fitting according to the present invention is not limited to the configuration shown in the above-described embodiments. The easy-to-cut portion may be provided with one protruding line and one concave groove adjacent to each other. Modifications of the easy-to-cut portion are shown in FIGS. 7 to 10. FIG. In the following description, the same reference numerals are given to the same components as those already described in the first embodiment, and overlapping descriptions are omitted.

FIG. 7 is a cross-sectional view showing an easy-to-cut portion 13A of a first modified example of the fitting 10. As shown in FIG. As shown in FIG. 7, the ridge 11A of the easy-to-cut portion 13A may be shaped so that the cross section perpendicular to the longitudinal direction protrudes in an arcuate shape, and the concave groove 19A may be formed in an arcuate groove.

FIG. 8 is a cross-sectional view showing an easy-to-cut portion 13B of a first modified example of the fitting 10. As shown in FIG. As shown in FIG. 8, the easy-to-cut portion is determined by the amount of protrusion 11B protruding from the facing surface 16a of the first base material 16 or the facing surface 20a of the second base material 20, and the depth of the depression of the groove 19B. may not match.

FIG. 9 is a cross-sectional view showing an easy-to-cut portion 13C of the first modified example of the fitting 10. As shown in FIG. As shown in FIG. 9, a ridge 11C is provided adjacent to the connecting portion 15, and grooves 19C are provided on the second side end 16b side of the first base material 16 and the second side end 20b side of the second base material 20. As shown in FIG. may be provided. Further, the concave groove 19C may have a flat surface at the bottom of the groove as shown in FIG.

FIG. 10 is a cross-sectional view showing an easy-to-cut portion 13D of the first modified example of the fitting 10. As shown in FIG. As shown in FIG. 10, the ridge 11D has a uniform thickness between the groove 19D and the second side edge 16b of the first base material 16 or the second side edge 20b of the second base material 20. may be formed.

As shown in the above embodiment and the modifications shown in FIGS. 7 to 10 , the easy-to-cut portion is formed by the groove 19 having a thin thickness of the first base material 16 or the second base material 20 and the ridge 11 having a thick thickness adjacent to each other. By being provided as such, a portion where the difference in thickness of each of the substrates 16 and 20 is larger than that of other regions is formed. As a result, when an external force is applied, stress concentrates on the recessed grooves, making them easy to break.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes and the like are included within the scope of the present invention.
Also, the constituent elements shown in the above-described embodiment and modifications can be combined as appropriate.

1 bag with fitting 10 fitting 12 first fitting member 13, 13A, 13B, 13C, 13D easy-to-cut portion 14 second fitting member 16 first base material 18 first fitting portion 19, 19A, 19B, 19C, 19D concave groove 20 second base material 22 second fitting portion 40 bag main body 47 accommodating portion 52 opening

Claims (4)

a first fitting member including a first fitting portion provided along the longitudinal direction of a strip-shaped first base material;
a second fitting member provided along the longitudinal direction of a strip-shaped second base material and having a second fitting portion detachably fitted to the first fitting portion;
an easy-to-cut portion provided in parallel with the first fitting portion or the second fitting portion on the first base material and the second base material;
a connecting portion formed between the easy-to-cut portion and the first fitting portion or the second fitting portion;
The easy-to-cut portion is composed of one ridge that protrudes in the thickness direction of the base material and one groove that is adjacent to the ridge in the width direction without being separated from the ridge , and , between the ridges and the grooves, there is no flat region that is flush with the surface of the first substrate facing the second substrate, and the ridges and the grooves the distance between is zero, and
The fitting tool, wherein the easy-to-cut portion can be cut along the concave groove by an external force. The fitting according to claim 1, wherein the concave groove is provided adjacent to the connecting portion. a bag body including an accommodating portion for accommodating contents;
and the fitting according to claim 1 or claim 2 attached near the opening on the inner surface of the bag body,
A bag body with a fitting, wherein the easy-to-cut portion is provided on the opening side of the bag body, and the first fitting portion and the second fitting portion are provided on the accommodating portion side. The ridge is provided on the opening side of the bag body,
The bag body with a fitting according to claim 3, wherein the concave groove is provided on the accommodating portion side.

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