Engagement tool and bag body with engagement tool

Abstract

To provide an engagement tool that can be repeatedly opened while preventing indeliberate opening by an infant, a child, etc., and to provide a bag body with the engagement tool.SOLUTION: An engagement tool 10 includes: a first engagement member 12 which has a first engagement part 18 provided along a longitudinal direction in a belt-like first base material 16; and a second engagement member 14 which has a second engagement part 22 provided along a longitudinal direction in a belt-like second base material 20 and which detachably engages with the first engagement part. The first base material and the second base material are provided with extension parts 13, 17 extending oppositely to external surface sides 16d, 20d on an opposite side from opposing surfaces 16a, 20a on which the first engagement part or the second engagement part is installed from first end parts 16c, 20c in the width direction. Second end parts 16b, 20b on the opposite side from the first end parts are arranged away from the extension parts.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a fitting and a bag body with a fitting.

Background Art

[0002] In various fields such as food, medicine, and sundries, a bag body with a fitting, in which a fitting for opening and closing an opening is attached to the inner surface near the opening of the bag body, is widely used. As the fitting, a first fitting portion and a second fitting portion that are detachably fitted to each other are provided along the longitudinal direction of a pair of strip-shaped base materials, respectively, and an example is cited in which the pair of base materials are arranged opposite to each other and fitted. For example, both the first fitting portion and the second fitting portion each have a plurality of male claw portions arranged in parallel, and a detachable fitting is known in which the heads of the male claw portions of each other are inserted between two male claw portions facing each other and hooked to each other for fitting.

[0003] In such a bag body with a fitting, by fitting the first fitting portion and the second fitting portion of the fitting, the opening formed in the bag body can be closed. Further, by gripping each opening end of the bag body to which the fitting is attached and pulling them in a separating direction to release the fitting between the first fitting portion and the second fitting portion, the bag body can be opened again. In this way, the bag body with a fitting can be repeatedly opened and closed.

[0004] For example, when storing packaged goods such as cigarettes, alcohol-containing foods, and medicines in a bag body with a fitting, it is desirable to store them in a place inaccessible to persons lacking judgment ability such as infants and children. However, there is a possibility that a person lacking judgment ability may accidentally touch a bag body with a fitting that contains such a packaged item. Since conventional bag bodies with fittings are configured to be easily opened and closed, anyone can easily open them. Therefore, a bag body with a fitting that contains a packaged item that one does not want to be touched by infants, children, etc. can also be easily opened. Thus, there has been a demand for a bag body with a fitting that can be repeatedly opened but cannot be easily opened by infants and children. For example, Patent Document 1 discloses a packaging bag provided with a child resistance function chuck so that children and the like cannot easily open it.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The packaging bag described in Patent Document 1 provides a lock area with a child resistance function at a part of the opening of the packaging bag, and provides a release area at the left and right ends of the lock area that can be easily released. In the release area, it is configured to be easily opened when a finger is inserted above the fitting part. Therefore, even children and the like can open the packaging bag when they insert a finger into the release area. Also, specifically, the release area of the packaging bag of Patent Document 1 is a member in the form of a tongue piece that is integrated with the adhesive strip and extended to the opening side at one or both of the left and right ends of the lower surface adhesive fitting body. For example, it has been proposed to provide it by a method of cutting the central part of the adhesive strip along the fitting part or a method of adhering separate release pieces to the left and right ends of the adhesive strip. In any case, when manufacturing the packaging bag, an additional process is required after attaching the chuck to the bag body, which may cause a decrease in production efficiency and a deterioration in yield.

[0007] The present invention has been made in view of the above circumstances, and an object thereof is to provide a fitting that can be repeatedly opened while preventing inadvertent opening by infants, children, etc., and a bag body with a fitting.

Means for Solving the Problems

[0008] The present invention has the following configuration. [1] A first fitting member including a first fitting portion provided along the longitudinal direction on a strip-shaped first base material, and a second fitting member provided along the longitudinal direction on a strip-shaped second base material and having a second fitting portion that is detachably fitted to the first fitting portion. The first base material and the second base material include extension portions that extend facing the outer surface on the outer surface side opposite to the facing surface where the first fitting portion or the second fitting portion is provided from the first end portion in the width direction, and the second end portion opposite to the first end portion is spaced apart from the extension portion. A fitting characterized by this. [2] The fitting according to [1], wherein in a state where the first fitting portion and the second fitting portion are fitted, the positions of the first end portion of the first base material and the first end portion of the second base material coincide. [3] In the first fitting member and the second fitting member, the length from the first end portion to the extending end of the extension portion is longer than the length from the first end portion to the first fitting portion or the second fitting portion. The fitting according to [1] or [2]. [4] In at least one of the first fitting member and the second fitting member, the width of the extension portion is longer than the width of the first base material or the second base material. The fitting according to any one of [1] to [3]. [5] The first fitting portion and the second fitting portion are configured such that the fitting state can be released by applying a force in a direction in which the first base material and the second base material are separated from each other from the fitting state in which the first fitting portion and the second fitting portion are fitted. The force required to release the fitting state is greater than the force for releasing the fitting state by separating the second end portions from each other. The fitting according to any one of [1] to [4]. [6] A bag body having a storage portion for storing contents, and a fitting tool according to any one of [1] to [5] detachably attached to the vicinity of the opening on the inner surface of the bag body, wherein at least a part of the extension portion is fixed to the inner surface of the bag body, and the second end portion is provided on the opening side of the bag body rather than the first end portion. A bag body with a fitting tool, characterized in that. [7] The extension portion extends toward the opening side rather than the second end portion, the extending end of the extension portion is fixed to the inner surface of the bag body, and the first end portion is provided so as to be separable from the inner surface of the bag body. The bag body with a fitting tool according to [6]. [8] A bag body having a storage portion for storing contents, and a fitting tool detachably attached to the vicinity of the opening on the inner surface of the bag body, the fitting tool being provided on the inner surface near the opening of the bag body, and having a first fitting portion provided along the longitudinal direction on a strip-shaped first base material. A first fitting member, and a second fitting member provided on the inner surface facing the first fitting member in the vicinity of the opening of the bag body, having a second fitting portion provided along the longitudinal direction on a strip-shaped second base material and detachably fitting with the first fitting portion, and a part of the outer surface of each first end portion located on the storage portion side in the width direction of the first base material and the second base material is fixed to the inner surface of the bag body, and the second end portion on the opposite side of the first end portion located on the opening side is arranged apart from the inner surface of the bag body, and the first fitting portion and the second fitting portion are configured such that the fitting state can be released by applying a force in a direction separating the first base material and the second base material from the fitting state in which the first fitting portion and the second fitting portion are fitted, and the force required to release the fitting state is configured such that the force for releasing the fitting state by separating the first end portions from each other is larger than the force for releasing the fitting state by separating the second end portions from each other. A bag body with a fitting tool, characterized in that. [Effect of the Invention]

[0009] It is possible to provide a fitting tool that can be repeatedly opened and closed while preventing accidental opening by infants, children, etc., and a bag body with a fitting tool. [Brief Description of the Drawings]

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0011] [Fitting] Hereinafter, the fitting according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. As shown in FIGS. 1 to 3, the fitting 10 according to the present embodiment includes a belt-shaped first fitting member 12 and a second fitting member 14. 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 disposed opposite to each other and are detachably fitted. The fitting 10 is used by being attached to the vicinity of the opening of the bag body with a fitting, which will be described later, so as to be able to seal the opening.

[0012] (First Fitting Member) The first fitting member 12 has a belt-shaped first base material 16, a first fitting portion 18, and a first extension portion 13. The first fitting portion 18 and the first extension portion 13 extend along the longitudinal direction of the first base material 16.

[0013] The first base material 16 is not particularly limited, and those used for the base materials of known fitting tools can be used. For example, polyolefin resins such as ethylene-based polymers and propylene-based polymers can be mentioned. The first base material 16 is preferably a base material made of a laminated film. Examples of the laminated film include a film in which a heat-resistant layer and a heat-sealing layer are laminated from the side of the facing surface 16a facing the second base material 20. Further, the first base material 16 may have a barrier layer between the heat-resistant layer and the heat-sealing layer.

[0014] Examples of the material for the heat-resistant layer include biaxially oriented nylon and biaxially oriented polypropylene. Examples of the material for the heat-sealing layer include linear low-density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, ionomer, etc. Examples of the material for the barrier layer include polyvinyl alcohol.

[0015] The first base material 16 may be composed of one type of resin, or may be composed of a resin composition containing two or more types of resins. Further, 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.

[0016] In addition, the first base material 16 and the second base material 20 may be provided with a resin layer having an easy-cutting function at least in part. A resin layer having an easy-cutting function uses a polyolefin resin composition. Examples of the crystalline polyolefin resin constituting the polyolefin resin composition include ethylene-based polymers and propylene-based polymers. The ethylene-based polymer is not particularly limited, and examples thereof include ethylene homopolymers, ethylene-α-olefin copolymers, ethylene-vinyl acetate copolymers, ethylene-acrylic acid copolymers, and copolymers with metal salts thereof. Examples of the propylene-based polymer include propylene homopolymers, random copolymers or block copolymers of propylene with ethylene or other olefins having 4 or more carbon atoms. Note that the first base material 16 and the second base material 20 may be provided with a resin layer having an easy-cutting function over the entire area thereof.

[0017] As shown in FIGS. 1 to 3, the first fitting portion 18 is provided along the longitudinal direction of the first base material 16 on the facing surface 16a of the first base material 16 facing the second base material 20 of the second fitting member 14.

[0018] The first fitting portion 18 includes a trunk portion 18a rising from the facing surface 16a of the first base material 16 and a head portion 18b provided on the tip side of the trunk portion 18a and larger than the trunk portion 18a. The first fitting portion 18 is a male fitting portion, and is configured such that the head portion 18b fits into a concave portion 22c of a second fitting portion 22 described later.

[0019] In the head portion 18b of the first fitting portion 18 in this example, a portion 18c on the second side end 16b (second end) side protrudes more than a portion 18d on the first side end 16c side. With this configuration, in a state where the first fitting portion 18 and the second fitting portion 22 are fitted as described later in the bag body, the fitting strength on the storage portion side where the content is stored is higher than that on the opening portion side, and even if the internal pressure of the bag body increases, it is difficult to release the fitting between the first fitting portion 18 and the second fitting portion 22. Also, on the opening portion side, the fitting strength is relatively low, and the fitting between the first fitting portion 18 and the second fitting portion 22 can be easily released by applying force by hand.

[0020] The shape of the first fitting portion 18 may be any shape that 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 the first base material 16 can be used.

[0021] As shown in FIGS. 1 to 3, the first fitting member 12 has a first extension portion 13. The first extension portion 13 is provided such that a flat first extension portion 13 extends in a strip shape in the longitudinal direction so as to face the outer surface 16d side opposite to the facing surface 16a of the first base material 16. The first extension portion 13 is continuously provided to extend from the first side end 16c, which is one end portion in the width direction of the first base material 16, to the outer surface 16d side. A first folded-back portion 11 that is folded back is formed at the boundary portion between the first extension portion 13 and the first base material 16. In the present embodiment, the first folded-back portion 11 is bent so that the angle θ formed by the inner surface 13a of the first extension portion 13 facing the outer surface 16d of the first base material 16 is an acute angle. However, the first end portion 16c of the first base material 16 and the first extension portion 13 may be connected in a curved manner.

[0022] As shown in FIG. 2, the width W13 of the first extension portion 13 is longer than the width W16 of the first base material 16. In the width direction W10 of the fitting tool 10, the first extending end 13b of the first extension portion 13 on the side opposite to the first side end 16c is located on the second side end 16b side of the first fitting portion 18 of the first base material 16. In the present embodiment, the first extending end 13b extends longer than the second side end 16b of the first base material 16 in the width direction W10 of the fitting tool 10.

[0023] As shown in FIG. 2, the first extending end 13b of the first extension portion 13 is located on the second side end 16b side of the first fitting portion 18. That is, in the width direction W10 of the fitting tool 10, the length from the first side end 16c to the first extending end 13b of the first extension portion 13 of the first fitting member 12 is longer than the length from the first side end 16c to the trunk portion 18a of the first fitting portion 18.

[0024] The first extension part 13 is preferably a laminated film having at least a base layer and a sealant layer. Examples of the base layer include biaxially stretched nylon and biaxially stretched polypropylene. Examples of the sealant layer include linear low density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer. The first extension part 13 may further be provided with a functional layer such as a barrier layer. Alternatively, the first extension part 13 may be a single-layer film composed only of a sealant layer.

[0025] (Second fitting member) The second fitting member 14 has a strip-shaped second base material 20, a second fitting part 22, and a second extension part 17. The second fitting part 22 and the second extension part 17 are extended along the longitudinal direction of the second base material 20. The second fitting member 14 has the same configuration as the first base material 16, the first folded-back part 11, and the first extension part 13 of the first fitting member 12. That is, the configuration of the second fitting part 22 of the second fitting member 14 is different from that of the first fitting part 18, but the shapes of the other parts are the same as those of the first fitting member 12. The material constituting the second base material 20 is not particularly limited, and examples thereof include a base material having the same configuration as the first base material 16, and the preferred embodiments are also the same.

[0026] As shown in FIGS. 1 to 3, the second fitting part 22 is provided on the facing surface 20a facing the first base material 16 of the first fitting member 12. The second fitting part 22 includes a pair of first arm parts 22a and second arm parts 22b that rise in a circular arc shape in cross section from the facing surface 20a of the second base material 20. A recess 22c extending in the longitudinal direction of the second base material 20 is formed between the first arm part 22a and the second arm part 22b in the second fitting part 22.

[0027] As shown in FIG. 3, the head 18b of the first fitting portion 18 fits into the recess 22c of the second fitting portion 22, and the head 18b of the first fitting portion 18 is locked at the tip portions of the first arm portion 22a and the second arm portion 22b of the second fitting portion 22, whereby the first fitting portion 18 and the second fitting portion 22 are fitted together. Further, by moving the first fitting portion 18 in the direction of separating it from the second fitting portion 22 in the fitted state, the head 18b of the first fitting portion 18 is detached while pushing the first arm portion 22a and the second arm portion 22b of the second fitting portion 22 outward from the inside. Thus, the first fitting portion 18 and the second fitting portion 22 are configured to be detachably fitted together.

[0028] The shape of the second fitting portion 22 may be any shape as long as the opening and closing of the opening of the bag body can be repeatedly performed by attaching and detaching the first fitting portion 18 and the second fitting portion 22 to and from each other. The material of the second fitting portion 22 is not particularly limited, and for example, the same material as the first base material 16 can be used.

[0029] As shown in FIGS. 1 to 3, the second fitting member 14 has a second extension portion 17. The second extension portion 17 is provided such that a flat plate-shaped second extension portion 17 extends in a strip shape in the longitudinal direction so as to face the outer surface 20d side opposite to the facing surface 20a of the second base material 20. The second extension portion 17 is continuously provided to extend from the first side end 20c side, which is one end portion in the width direction of the second base material 20, to the outer surface 20d side of the second base material 20. A folded second folded portion 15 is formed at the boundary portion between the second extension portion 17 and the second base material 20. In the present embodiment, the second folded portion 15 is bent so that the angle θ formed by the inner surface 17a of the second extension portion 17 facing the outer surface 20d of the second base material 20 is an acute angle. However, the first end portion 20c of the second base material 20 and the second extension portion 17 may be curved and connected.

[0030] As shown in FIG. 2, the width W17 of the second extension portion 17 is longer than the width W20 of the second base material 20. In the width direction W10 of the fitting tool 10, the second extension end 17b on the side opposite to the second folding portion 15 of the second extension portion 17 is located closer to the second side end 20b (second end portion) side of the second base material 20 than the second fitting portion 22. In the present embodiment, in the width direction W10 of the fitting tool 10, the second extension end 17b extends longer than the second side end 20b of the second base material 20.

[0031] As shown in FIG. 2, the first extension end 17b of the second extension portion 17 is located closer to the second side end 20b side than the second fitting portion 22. That is, in the width direction W10 of the fitting tool 10, the length from the first side end 20c to the second extension end 17b of the second extension portion 17 of the second fitting member 14 is longer than the length from the first side end 20c to the second arm portion 22b of the second fitting portion 22.

[0032] As shown in FIG. 3, in a state where the first fitting portion 18 and the second fitting portion 22 are fitted, the first side end 16c of the first base material 16 and the first side end 20c of the second base material 20 coincide in position in the width direction W10 of the fitting tool 10.

[0033] The first extension portion 13 and the second extension portion 17 are connected to the first base material 16 or the second base material 20 with the folding portions 11 and 15 as boundaries, respectively. On the other hand, the first extension portion 13 and the second side end 16b of the first base material 16 are spaced apart, and the second extension portion 17 and the second side end 20b of the second base material 20 are spaced apart. The first extension portion 13 and the second extension portion 17 are configured to be elastically deformed starting from the folding portions 11 and 15 and movable in the proximity or separation direction with respect to the first base material 16 or the second base material 20. That is, each of the second side ends 16b and 20b and each of the extension portions 13 and 17 are spaced apart. Here, the spaced-apart arrangement refers to a state in which the second side ends 16b and 20b and the extension portions 13 and 17 are not adhesively fixed and are arranged so as to be able to contact or separate, and includes not only a state in which they are separated from each other but also a state in which they are pressed against each other by an external force and come into contact with each other.

[0034] In a state where the first fitting portion 18 and the second fitting portion 22 are fitted, the first extension portion 13 is movable between a state of facing and being close to the outer surface 16d of the first base material 16 of the first fitting member 12 and a state of being separated from the outer surface 16d. Similarly, in a state where the first fitting portion 18 and the second fitting portion 22 are fitted, the second extension portion 17 is movable between a state of facing and being close to the outer surface 20d of the second base material 20 of the second fitting member 14 and a state of being separated from the outer surface 20d.

[0035] The first fitting portion 18 and the second fitting portion 22 are configured to be able to release the fitting state when a force is applied in a direction to separate the first base material 16 and the second base material 20. Specifically, when the user pinches the second side ends 16b and 20b of the first base material 16 and the second base material 20 with a finger and spreads them apart in a direction in which the opposing surfaces 16a and 20a are separated from each other, the first fitting portion 18 drops off from the second fitting portion 22 and the fitting state is released. Also, even if an external force is applied to each of the first side ends 16c and 20c and the opposing surfaces 16a and 20a of the first base material 16 and the second base material 20 move in a direction to separate from each other, the first fitting portion 18 can drop off from the second fitting portion 22. However, the force required to release the fitting state between the first fitting portion 18 and the second fitting portion 22 is greater than the force to release the fitting state of the fitting portions 18 and 22 by separating the second side ends 16b and 20b from each other. Therefore, even if an external force is applied to each of the first side ends 16c and 20c, the fitting of the fitting portions 18 and 22 is configured to be difficult to release.

[0036] The manufacturing method of the fitting of the present invention is not particularly limited, and known methods can be used. Examples of the manufacturing method of the first fitting member 12 and the second fitting member 14 include extrusion molding and the like.

[0037] According to the fitting tool 10 according to this embodiment, the first fitting member 12 and the second fitting member 14 are each provided with extension portions 13 and 17, and since the respective second side ends 16b and 20b are separated from the extension portions 13 and 17, when the user grips and separates the second side ends 16b and 20b, the fitting state can be easily released. On the other hand, in order for the user to grip and separate the extension ends 13b and 17b to release the fitting state, the separation distance between the extension ends 13b and 17b needs to be a length equal to or greater than a predetermined amount. Therefore, when such a fitting tool 10 is provided at the opening of the bag body, it is possible to provide a fitting tool that can be repeatedly opened while preventing inadvertent opening by infants, children, etc.

[0038] According to the fitting tool 10 according to this embodiment, even if the extension ends 13b and 17b are gripped and separated, it is difficult to release the fitting of the fitting portions 18 and 22, making it difficult for infants, children, etc. to open, and the fitting of the fitting portions 18 and 22 can be released by gripping and separating the second side ends 16b and 20b, which are difficult for infants, children, etc. to operate. That is, the fitting tool 10 has a function of preventing opening by infants, children, etc. in the same region in the longitudinal direction, and a function of releasing the fitting of the fitting portions 18 and 22 by gripping and separating the second side ends 16b and 20b.

[0039] If the fitting tool 10 according to this embodiment is attached to the opening of the bag body, it is possible to easily manufacture a bag body with a fitting tool that can be repeatedly opened while preventing inadvertent opening by infants, children, etc. Since the fitting tool 10 according to this embodiment has a child resistance function and a function of opening by gripping the second side ends 16b and 20b in the same region in the longitudinal direction, the step of setting the child resistance function after attaching to the opening of the bag body becomes unnecessary. As a result, a bag body with a fitting tool having a child resistance function can be easily manufactured.

[0040] [Bag body with fitting tool] Hereinafter, as a bag body with a fitting tool according to this embodiment, a bag body 1 with a fitting tool (hereinafter, may be described as "bag body 1") provided with the above-described fitting tool 10 will be described.

[0041] In this embodiment, the shape of the bag body 40 is rectangular. However, the shape of the bag body 40 is not limited to rectangular. 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 FIG. 4, the bag body 1 includes a sealed bag body 40 for accommodating contents, and a fitting 10 attached along the horizontal direction to the inner surface of the upper part of the bag body 40.

[0042] The bag body 40 is formed by overlapping a first film material 42 and a second film material 44, and heat-sealing all of their peripheral edges 46, and is sealed. Below the fitting 10 of the bag body 40 is a storage portion 47 for accommodating the contents. Above the fitting 10 in the bag body 40 becomes an opening 52 after the bag body 1 is opened. That is, the fitting 10 is attached near the opening 52 of the bag body.

[0043] The first film material 42 and the second film material 44 forming the bag body 40 may be any materials that can weld the fitting 10 by heat-sealing, and a laminated film having at least a sealant layer and a base material layer from the inner surface side is preferable. Examples of the base material layer include biaxially stretched nylon and biaxially stretched polypropylene. Examples of the sealant layer include linear low-density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, and ionomer. The laminated film may be provided with a functional layer such as a barrier layer. The first film material 42 and the second film material 44 may be single-layer films composed only of the sealant layer.

[0044] In the bag body 1, as shown in FIG. 6, the outer surface 13d of the first extending end 13b of the first extension portion 13 is welded to the first film material 42 of the bag body 40, and the outer surface 17d of the second extending end 17b of the second extension portion 17 is welded to the second film material 44 of the bag body 40, whereby the fitting 10 is fixed to the inner surface of the bag body 40.

[0045] The fitting tool 10 is arranged such that the second side end 16b of the first base material 16, the first extending end 13b of the first extension part 13, the second side end 20b of the second base material 2012, and the second extending end 17b of the second extension part 17 are disposed on the opening 52 side of the bag body 1, and each first end part 16c, 20c is disposed on the accommodating part 47 side of the bag body 1.

[0046] As shown in FIG. 6, in the first fitting member 12 and the second fitting member 14, the first fitting part 18 and the second fitting part 22 are disposed opposite to each other. In the state where the first fitting member 12 and the second fitting member 14 are fitted, the pair of base materials 16, 20 and the pair of extension parts 13, 17 are symmetrically disposed with the first fitting member 12 and the second fitting member 14 interposed therebetween.

[0047] As shown in FIG. 5, the fitting tool 10 is arranged in a W shape in the longitudinal section of the bag body 1. The outer surfaces 13d of the first extending end 13b and the outer surfaces 17d of the second extending end 17b are respectively welded to the film materials 42, 44 of the bag body 40. Below the welded part of the fitting tool 10 and the bag body 40, the lower part of the first extension part 13, the first folding part 11, the first base material 16, the second base material 20, the second folding part 15, and the lower part of the second extension part 17 are sandwiched between the film materials 42, 44 of the bag body 40 and are disposed in a separated state. When the film materials 42, 44 of the bag body 40 are brought close to each other, the extension parts 13, 17 and the film materials 42, 44 can be opposed and contacted. Further, the outer surfaces 16d, 20d of the base materials 16, 20 and the inner surfaces 13a, 17a of the extension parts 13, 17 can be opposed and contacted.

[0048] When the opening 52 of the bag body 40 is widened, a gap is formed between the second side end 16b of the first base material 16 and the second side end 20b of the second base material 20, and the first extension part 13 and the second extension part 17. When the user pinches each of the second side end 16b and the second side end 20b by hand and moves them in a separating direction, the fitting between the first fitting part 18 and the second fitting part 22 is released, and the bag body 1 can be opened.

[0049] On the one hand, as shown in FIG. 7, when the edge portions 42b and 44b of the film materials 42 and 44 near the opening 52 of the bag body 40 are gripped and the film materials 42 and 44 are moved in the direction indicated by the arrow in FIG. 7, the extension portions 13 and 17 are separated from the respective base materials 16 and 20, but the base materials 16 and 20 do not separate from each other, and the fitting state between the first fitting portion 18 and the second fitting portion 22 is maintained. As the fitting tool 10, when the folded-back portions 11 and 15 are separated from each other by a predetermined distance or more, the fitting state between the first fitting portion 18 and the second fitting portion 22 can be released. However, as shown in FIGS. 5 and 6, both end portions in the width direction of the bag body 40 are welded, and the fitting tool 10 is provided on the inner surfaces of the film materials 42 and 44 near the opening 52. Therefore, in the state where the opening 52 is opened to the maximum, the first base material 16 and the second base material 20 are maintained in a state of facing each other, and the fitting between the first fitting portion 18 and the second fitting portion 22 is not released. Therefore, even if the edge portions 42b and 44b of the film materials 42 and 44 near the opening 52 are gripped to widen the opening 52, the fitting between the first fitting portion 18 and the second fitting portion 22 is not released, and the bag body 1 cannot be opened. On the other hand, when the user grips the second side ends 16b and 20b of the respective base materials 16 and 20 and spreads them in a direction away from each other, the fitting between the first fitting portion 18 and the second fitting portion 22 is released.

[0050] [Manufacturing Method of Bag Body with Fitting Tool] The manufacturing method of the bag body 1 with a fitting tool includes the following steps. Fitting Tool Forming Step: A resin material for forming a fitting tool is supplied to an extruder, extruded by an annular die, cooled by an air cooling method or a water cooling method, and widened and formed into a film by an inflation method. Thereby, a first fitting member 12 provided with a first fitting portion 18, a first base material 16, and a first extension portion 13 on the inner surface is formed. The second fitting member 14 is also formed in the same manner. Fitting Tool Welding Step: The fitting tool 10 is welded to the inner surfaces of the first film material 42 and the second film material 44. In this step, at a position avoiding the first fitting portion 18, the second fitting portion 22, the first base material 16, and the second base material 20, using a heating device such as a heat bar, the outer surface 13d of the first extending end 13b of the first extension portion 13 is welded to the inner surface of the first film material 42, and the outer surface 17d of the second extending end 17b of the second extension portion 17 is welded to the inner surface of the second film material 44. Fusing process: After the fusing process of the fitting, the film materials 42 and 44 are folded so that the first fitting portion 18 and the second fitting portion 22 face each other, and are fused in the width direction at a plurality of positions with a space in the length direction to continuously form the base of the bag body 1 with fittings. Packaging process: The inner surfaces of the first film material 42 and the second film material 44 after cutting are supplied into the packaging device in a state where they face each other, and while sandwiching the content 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. By this process, the bag body 40 is sealed with the content accommodated in the accommodating portion 47.

[0051] Note that the manufacturing method of the bag body with fittings is not limited to the manufacturing method of the bag body with fittings described above. For example, the manufacturing method of the bag body with fittings may once wind up the cylindrical body obtained in the molding process. Further, a stretching process, a printing process, etc. may be carried out as necessary.

[0052] The bag body 1 with fittings described above can be repeatedly opened while preventing accidental opening by infants, children, etc. by having the above configuration.

[0053] The bag body 1 with fittings according to the present embodiment can manufacture a bag body having a child resistance function in all regions of the opening provided with the fitting 10.

[0054] Although an example in which the fitting 10 is welded to the first film material 42 and the second film material 44 is shown for the bag body with fittings according to the present embodiment, the configuration of the bag body with fittings is not limited to this, and the first fitting portion and the second fitting portion may be directly formed on the inner surface of the film material constituting the bag body.

[0055] (Second Embodiment) FIG. 8 shows a longitudinal sectional view of the opening 52 of the bag body 1A with fittings according to the second embodiment. In the following description, the same reference numerals are given to the components common to those already described in the first embodiment, and the overlapping description is omitted. The bag body 1A with fittings according to the present embodiment is an example that does not include the folded-back portion shown in the first embodiment.

[0056] The configurations of the first base material 16, the second base material 20, the first fitting portion 18, and the second fitting portion 22 are the same as those in the first embodiment. In the bag body 1A shown in FIG. 8, the outer surface 16d of the first side end 16c of the first base material 16 is fixed to the inner surface of the first film material 42, and the outer surface 20d of the first side end 20c of the second base material 20 is fixed to the inner surface of the second film material 44. The first base material 16 and the second base material 20 are not fixed to the film materials 42 and 44 from below (on the side of the accommodating portion 47) of the first fitting portion 18 and the second fitting portion 22 to the respective second side ends 16b and 20b, and the respective second side ends 16b and 20b (the end portions on the opening side) are free ends.

[0057] Similar to the bag body 1 with a fitting tool according to the first embodiment, the bag body 1A with a fitting tool according to the present embodiment does not release the fitting between the first fitting portion 18 and the second fitting portion 22 even when the opening 52 is opened by gripping the edge portions 42b and 44b of the respective film materials 42 and 44. On the other hand, when the second side ends 16b and 20b of the respective base materials 16 and 20 are gripped and opened in a direction away from each other, the fitting between the first fitting portion 18 and the second fitting portion 22 can be easily released.

[0058] According to the bag body 1A with a fitting tool according to the present embodiment, similar to the first embodiment, it is possible to prevent accidental opening by infants, children, etc., and it can be repeatedly opened. Further, according to the bag body 1A with a fitting tool, a bag body having a child resistance function can be manufactured in all regions of the opening provided with the fitting tool 10.

[0059] The above-described bag bodies 1 and 1A with fitting tools can be suitably used not only for infants and children but also for storing packaged items that need to be protected from opening by the elderly and the like.

[0060] In the above embodiment, an example in which the widths of the extension portions 13 and 17 are longer than the widths of the base materials 16 and 20 is shown, but the dimensions of the extension portions 13 and 17 are not limited thereto. For example, when the extending end is fixed to the inner surface of the bag body by a method other than the heat welding method or when the width of the base material is sufficiently long, the width of the extension portion and the width of the base material may be made substantially equal, and the extending end may be provided at a position substantially equal to the second end of the base material.

[0061] In each of the above embodiments and comparative examples, an example was shown in which the first fitting member 12 and the second fitting member 14 have the same shape and are symmetrically arranged except for the configurations of the fitting portions 18 and 22. However, in the first fitting member and the second fitting member, it is not an essential configuration that the shapes of the base material and the extension portion are the same. For example, a form in which the widths of the first extension portion and the second extension portion are different may be used.

[0062] As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention are also included. In addition, the constituent elements shown in the above-described embodiments and each modification can be combined as appropriate.

Explanation of Reference Numerals

[0063] 1, 1A Bag body with fitting 10 Fitting 12 First fitting member (fitting member) 13 First extension portion (extension portion) 13b First extending end (extending end) 14 Second fitting member (fitting member) 16 First base material (base material) 17 Second extension portion (extension portion) 17b Second extending end (extending end) 18 First fitting portion (fitting portion) 20 Second base material (base material) 22 Second fitting portion (fitting portion) 40 Bag body 47 Accommodating portion 52 Opening

Claims

1. A first fitting member including a first fitting portion provided along a longitudinal direction of a band-shaped first base material; a second fitting member provided on a strip-shaped second base material along a longitudinal direction thereof and including a second fitting portion adapted to be detachably fitted with the first fitting portion; The first substrate and the second substrate are an extension portion extending from a first end portion in a width direction to an outer surface side opposite to an opposing surface on which the first fitting portion or the second fitting portion is provided, the extension portion facing the outer surface; A fitting having a second end opposite the first end and spaced apart from the extension.

2. When the first fitting portion and the second fitting portion are fitted to each other, the first end portion of the first base material and the first end portion of the second base material are aligned in position. The fitting of claim 1.

3. In the first fitting member and the second fitting member, the length from the first end to the extending end of the extension portion is longer than the length from the first end to the first fitting portion or the second fitting portion. The fitting according to claim 1 or 2.

4. In at least one of the first fitting member and the second fitting member, the width of the extension portion is greater than the width of the first base material or the second base material. The fitting according to any one of claims 1 to 3.

5. the first fitting portion and the second fitting portion are configured to be able to release the fitted state in which the first fitting portion and the second fitting portion are fitted together by applying a force in a direction in which the first base material and the second base material are separated from each other, A force required to release the fitted state by separating the first ends from each other is greater than a force required to release the fitted state by separating the second ends from each other. The fitting according to any one of claims 1 to 4.

6. A bag body having a storage section for storing contents; and a fitting device according to any one of claims 1 to 5 that is attached to an inner surface of the bag body near an opening of the bag body so as to be able to seal the bag body; At least a portion of the extension is fixed to the inner surface of the bag body, A bag body with a fitting, characterized in that the second end is provided closer to the opening of the bag body than the first end.

7. The extension portion extends toward the opening side beyond the second end portion, The extension end of the extension portion is fixed to the inner surface of the bag body, The first end is provided so as to be separable from the inner surface of the bag body. The bag with fitting according to claim 6.

8. A bag body having a storage section for storing contents; a fitting attached to the inner surface of the bag body near the opening so as to be able to seal the bag body; The fitting tool is a first fitting member provided on an inner surface of the bag body near the opening and having a first fitting portion provided along a longitudinal direction of a belt-shaped first base material; a second fitting member provided on the inner surface of the bag body in the vicinity of the opening thereof and facing the first fitting member, the second fitting member having a second fitting portion provided on a belt-shaped second base material along a longitudinal direction thereof and removably fitted with the first fitting portion; Equipped with a part of an outer surface of each of the first ends of the first base material and the second base material that is located on the side of the storage portion in the width direction is fixed to the inner surface of the bag body; a second end portion opposite to the first end portion located on the opening side is disposed spaced apart from the inner surface of the bag body; the first fitting portion and the second fitting portion are configured to be able to release the fitted state in which the first fitting portion and the second fitting portion are fitted together by applying a force in a direction in which the first base material and the second base material are separated from each other, A bag body with a fitting, characterized in that the force required to release the fitted state by separating the first ends from each other is greater than the force required to separate the second ends from each other and release the fitted state.

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