JP2007246140A - Engaging utensil, manufacturing method for engaging utensil, and packaging bag having engaging utensil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a freely openable/closable packaging bag in such a manner that an engaging utensil and a shape retaining member are heat-welded and integrated, and are welded to the internal surface of the opening section of the packaging bag, and at the same time, to provide the packaging bag having the engaging utensil which does not return to the original state even when the packaging bag is opened, and has a shape retaining function which can keep open. <P>SOLUTION: This engaging utensil made of a thermoplastic resin consists of a male member and a female member which engage with each other. Then, the male member and/or the female member and the shape retaining member made of a thermoplastic resin are heat-welded and integrated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a packaging bag provided with an occlusion device in which a male member and a female member are engaged with each other in the opening, and the manufacturing of the occlusion device and the occlusion device capable of holding the opening of the packaging bag in an open state and a closed state. The present invention relates to a method and a packaging bag with a bite.

  Conventionally, a packaging bag that can be opened and closed by providing a band-shaped bite made of a male member and a female member at the opening of the packaging bag has been widely used in the fields of food, pharmaceuticals, miscellaneous goods, etc. due to the ease of use. ing. Here, the male member has a strip-shaped base portion that is heat-sealed by heat sealing or the like to the inner surface of the packaging bag in the vicinity of the opening, and a cross-sectional shape that protrudes from the strip-shaped base portion so that the tip bulges. And a male occlusion portion extending along the outgoing direction.

  Similarly, the female member includes a belt-like base portion and a female occlusion portion having a curved cross-sectional shape that meshes with the bulging end portion of the male occlusion portion and extending along the extending direction of the belt-like base portion. And since the peripheral edge of a packaging bag opening part is sealed linearly by making the said male occlusion part and a female occlusion part mutually bite, foodstuff etc. can be sealed and stored without leaking. When taking out the contents such as foods hermetically stored in such a bag with a bite, for example, the bag outer portion in the vicinity of the opening is picked and pulled outward.

  As described above, the packaging bag with the bite can easily open and close the packaging bag. However, the bite is rigid compared to the packaging bag body because the male member and the female member have the above-described shape. However, even if the bite is opened and the packaging bag is opened, it immediately returns to its original state and the opening is closed. For this reason, every time the contents are taken out from the opened packaging bag, it has to be opened each time, and there is a problem that the usability is poor. Therefore, in a pouch container in which a pair of band-shaped fastener members (interlocking tools) formed of a plastic material and having meshing portions that mesh with each other are mounted on the inner surface of the mouth portion of the bag body, the fastener member or the fastener member is mounted. A pouch container having a shape-retaining property capable of being plastically deformed, or a linear or belt-shaped shape-holding member that is plastically deformable sandwiched between the bag body and the fastener member A pouch container is disclosed (see, for example, Patent Document 1).

However, Patent Document 1 does not disclose a method of imparting plastically deformable shape retaining property to the fastener member or the mounting portion of the fastener member, and the shape retaining member is sandwiched between the fastener member and the bag body. There is no disclosure of a practical means. In addition, this method is difficult to manufacture with a general articulator-attached bag making machine and requires not only mechanical modification such as a shape retaining member supply unit and a positioning device between the fastener member and the shape retaining member. Adjustment time such as alignment is required, and there is a problem in that the yield of the product is reduced due to the adjustment and the cost is increased.
JP 2003-40290 A

  Therefore, the present invention integrates the occlusal and the shape-retaining member by heat-sealing and fusing them to the inner surface of the opening of the packaging bag to make the packaging bag openable and closable. It is to provide a packaging bag with an occlusal device having a shape maintaining function capable of maintaining an open state.

  The present invention has been made in order to achieve the above-mentioned problems, and the present invention according to claim 1 is a bite made of a thermoplastic resin comprising a male member and a female member that are engaged with each other. The male member and / or the female member and a shape retaining member made of thermoplastic resin are integrated by heat fusion.

  Moreover, this invention of Claim 2 is a manufacturing method of the articulation tool for manufacturing the articulation tool of Claim 1, Comprising: While forming an articulation tool by extruding a thermoplastic resin, It is characterized by being bonded to the shape holding member with fusion heat and integrated.

  Further, the present invention according to claim 3 is characterized in that, in the method for manufacturing an articulating device according to claim 2, the shape holding member is heated in advance with hot air, bonded to the articulating device, and integrated. is there.

  Moreover, this invention of Claim 4 is a manufacturing method of the occlusion tool for manufacturing the occlusion tool of Claim 1, Comprising: Extrusion molding of a thermoplastic resin forms an occlusion tool, The shape holding member is ultrasonically sealed and fused and integrated.

  Further, the present invention according to claim 5 is a packaging bag with an articulation tool, wherein the bite according to claim 1 is fused to the inner surface of the opening of the packaging bag.

  In the occlusion device of the present invention, the shape holding member is heat-sealed, and by opening the occlusion device to the inner surface of the opening of the packaging bag, the opening of the packaging bag can be freely opened and closed. The tool has a shape-retaining property that can be plastically deformed. When the male member and the female member are manually pulled to release the occlusion state and the packaging bag is opened, the occlusion tool is plastically deformed and the open state is maintained. Therefore, the contents can be easily taken out from the packaging bag, and there is an effect that convenience can be given to the consumer. Also, to close the opening of the packaging bag, the bite is returned to its original state, and when the male and female members of the bite are pressed against each other with fingers, the bite can be easily re-sealed. It is.

  In addition, the occlusion device of the present invention can be integrated with a thermoplastic resin shape holding member by extruding the thermoplastic resin into a predetermined shape, and can be integrated with the fusion heat. It is possible to easily produce a bag with an attached bag making machine, and to obtain a packaging bag with an occlusal tool which is excellent in economic efficiency without incurring modification costs of the bag making machine.

  In addition, as described in claim 3, the shape holding member and the occlusal device are more easily fused by bonding the shape holding member to the occlusal device formed by extrusion by preheating with hot air heating. effective.

  In addition, as described in claim 4, the adhesive force between the shape holding member of the occlusion tool and the occlusion tool is further increased by ultrasonically sealing the fused occlusion tool and the shape holding member. There is an effect.

  The above-described present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of an articulating device according to the present invention. FIG. 2 is an explanatory view of the manufacturing method of one embodiment of the articulating device according to the present invention. FIG. 3 is a plan view showing an embodiment of a packaging bag with an articulating device according to the present invention. 4 is a cross-sectional view taken along line XX of FIG. FIG. 5 is an explanatory diagram relating to the opening of the packaging bag of FIG. FIG. 6 is a perspective view showing the unsealed state of FIG.

  As shown in FIG. 1, the articulating tool 1 according to an embodiment of the present invention is composed of a pair of male members 10 and female members 20. The male member 10 is provided with a male-type occlusal portion 12 having a substantially spade cross section on the same surface with a belt-like base portion 11 as a base material, protruding toward the female member 20 and continuously provided on the opposite surface. A concave portion 13 is provided, and the band-shaped shape holding member 2 is fitted into the concave portion 13 and is heat-sealed and integrated. The concave portion 13 is shorter than the width of the base portion 11 and has a width dimension longer than the width of the male occlusal portion 12, and is provided thinner than the thickness of the base portion 11 in the direction of the male occlusal portion 12. The belt-like shape holding member 2 having substantially the same shape as the cross section 13 is fitted, and the surface of the base 11 and the shape holding member 2 are configured to be substantially the same surface. Further, the female member 20 is provided with a female occlusal portion 22 having an arc-shaped cross section on the same surface with the belt-like base portion 21 as a base material, and is continuously provided with the base portion 21 toward the male member 10, and a concave portion on the opposite surface. 23 is provided, and the band-like shape holding member 2 is fitted into the concave portion 23 and heat-sealed to be integrated. The recess 23 has a width that is shorter than the width of the base 21 and longer than the width of the female occlusion 22, and is provided thinner than the thickness of the base 21 in the direction of the female occlusion 22. A belt-like shape holding member 2 having substantially the same shape as the cross section 23 is fitted, and the surface of the base 21 and the shape holding member 2 are configured to be substantially the same surface. The occlusal tool 1 is configured such that a male occlusion portion 12 and a female occlusion portion 22 are engaged with each other.

  The positions of the shape retaining member 2 and the recess 13 in the male member 10 are preferably arranged so that the center line of the male occlusal portion 12 passes through the center of the shape retaining member 2 and the recess 13 in the width direction. Similarly, the position of the shape maintaining member 2 and the recess 23 in the female member 20 is preferably arranged so that the center line of the female occlusal portion 22 passes through the center of the shape maintaining member 2 and the recess 13 in the width direction. Thus, compared with the base parts 11 and 21, it has the effect which improves a shape maintenance function by arrange | positioning in the position of the male occlusion part 12 and the female occlusion part 22 whose rigidity is strong.

  The male member 10 and the female member 20 of the bite 1 can be made of a thermoplastic resin such as polyethylene or polypropylene, and are extruded into a band using a mold. In addition, the shape maintaining member 2 is composed of a strip-like material made of a stretched polyolefin resin or the like having a rolling ratio of 5 to 16 times, a stretching ratio of 1.3 to 2.5 times, and a total stretching ratio of 10 to 40 times. In addition, although the shape holding member 2 showed the example of the occlusion tool integrated in both the male member 10 and the female member 20, it is not limited to this, It is not limited to this, either the male member 10 or the female member 20 It may be integrated.

Next, a method for manufacturing the articulating tool 1 of the present invention will be described with reference to FIG. First, the first method (hereinafter referred to as a thermal lamination method) is a method in which a female member 20 is formed by extruding a thermoplastic resin using a mold, and the female occlusal portion 22 is arranged at the center. The recessed portion 23 and the belt-shaped shape holding member 2 are fitted and integrated with the fusion heat of the female member 20, and after cooling, the thermoplastic resin is extruded using the mold in the same manner as the female occlusal portion 22 The male occlusal portion 12 of the male member 10 formed as described above is engaged, and the belt-shaped occlusal tool 1 is wound up. 2A shows a state before the female member 20 and the shape maintaining member 2 are fitted together, and FIG. 2B shows a state after the fitting. When the concave portion 23 and the shape retaining member 2 are fitted and integrated, the surface of the base portion 21 on the female occlusal portion 22 side is moved from the position corresponding to the edge of the female occlusal portion 22 to the end portion of the concave portion 23. It is preferable to pressurize the region a provided up to the corresponding position in the direction of the shape holding member 2, and the adhesion between the base 21 and the shape holding member 2 is increased. The surface to be pressed may be from the end edge of the female occlusal portion 22 to the end portion of the base portion 21. If the width of the shape holding member 2 is x, the thickness is t ₁ , the width of the base portion 21 is y, the thickness is t ₂ , and the width between the edges of the female occlusal portion 22 is z, y>x> z, t ₂ > the relationship of t _1. The thickness t ₁ of the shape holding member 2 is preferably 0.1 to 1.0 mm, and more preferably 0.3 to 0.5. If it is less than 0.1 mm, the shape retention effect is reduced, and if it exceeds 1.0 mm, the cost is increased. The width x of the shape holding member 2 is preferably 3 mm to 10 mm, and more preferably 4 mm to 7 mm. If it is less than 3 mm, the shape retention effect is lowered, and if it exceeds 10 mm, the cost is increased. The same applies to the case where the shape holding member 2 is heat-sealed to the male member, and the description thereof is omitted. When polyethylene is used for the thermoplastic resin used for the male member 10 and the female member 20, it is desirable that the shape maintaining member 2 is also made of the same resin as polyethylene.

  Next, the second method (hereinafter referred to as hot air method) will be described with reference to FIG. This method is manufactured by winding the belt-shaped articulating tool 1 in the same manner as the thermal laminating method, and by fitting the concave portion 23 and the shape holding member 2 in the female member 20 and integrating them, and the male member 10, the method of fitting the concave portion 13 and the shape-retaining member 2 together is different. That is, the surface of the shape maintaining member 2 fitted into the recess 23 is heated with hot air and then fitted into the recess 23 to be integrated, and by the heat of fusion of the female member 20 and the preheating of the shape maintaining member 2 Furthermore, there is an effect that it is easier to fuse. Moreover, when integrating, it is preferable to pressurize the area | region a provided in the female-type occlusion part 22 side in the direction of the shape holding member 2. FIG. Others are the same as the first method, and the description is omitted.

  Next, a third method (hereinafter referred to as an ultrasonic method) will be described. This method is also manufactured by winding the belt-like articulating tool 1 in the same manner as the thermal laminating method, and by fitting the concave portion 23 and the shape retaining member 2 in the female member 20 and integrating them, and the male member 10, the method of fitting the concave portion 13 and the shape-retaining member 2 together is different. After fitting the shape retaining member 2 and the recess 23, the shape retaining member is ultrasonically sealed at a portion corresponding to the region a provided on the female occlusal portion 22 side while pressurizing the base 21 and the shape retaining member 2. 2 and the base 21 are integrated. By performing ultrasonic sealing, the base portion 21 and the shape holding member 2 are fused, and the adhesive force is further increased. Others are the same as those of the thermal lamination method, and the description is omitted.

  FIG. 3 shows a packaging bag 3 with an articulation tool in which the articulation tool 1 of the present invention is fused to the opening on the inner surface of the packaging bag. 4 is a cross-sectional view taken along line XX of FIG. The packaging bag 3 with the bite device is composed of the base sheet 30 and the bite device 1. The rectangular base sheet 30 is a biaxially stretched plastic film such as nylon, polyethylene terephthalate, or polypropylene, and a film in which a barrier material such as polyvinyl alcohol or vinylidene chloride is coated on these films, silicon oxide, aluminum oxide, or the like. A substrate layer made of a film on which an inorganic material is deposited, a barrier film such as ethylene vinyl alcohol, an intermediate layer such as aluminum foil and paper, and a heat seal layer such as polyethylene and polypropylene are known as dry lamination method and extrusion lamination method. It consists of a laminated material bonded by the technique. These laminated structures are determined in consideration of various conditions such as contents to be packaged, weight, and sterilization method. The male member 10 and the female member 20 are fused to the inner surface in the vicinity of the edge of one side of the two base sheet 30 so that the male occlusal portion 12 and the female occlusal portion 22 face each other, and the inner surfaces of the remaining three sides They are heat-sealed to form a heat-sealed portion 5 that is sealed. An opening 4 is formed on the side of the fused joint 1, and after filling the contents from the opening 4, the joint 1 is bitten and the periphery of the opening 4 is heat-sealed and sealed. Since the shape maintaining member 2 is integrated with the male member 10 and / or the female member 20, such a packaging bag 3 with the bite can be manufactured by a conventional bite attachment machine. In addition, the packaging bag 3 with a bite is not limited to the flat bag shown in FIG. 3, but can also be used for a gusset bag, a self-supporting bag, a three-sided bag, or the like.

  Next, the shape maintaining function of the packaging bag 3 with the bite according to the present invention will be described with reference to FIGS. FIG. 5 shows a state when the packaging bag 3 with the bite is opened, and a finger is put into the opening 4 of the packaging bag 3 with the bite so that the base 11 of the male member 10 and the base 21 of the female member 20 are connected. When picked with a finger and pulled outward, the occlusion of the male occlusal portion 12 and the female occlusal portion 22 is released and the packaging bag 3 with the occlusal tool is opened. As shown in FIG. 6, since the shape maintaining member 2 fused and integrated with the male member 10 and the female member 20 is plastically deformed and the open state is maintained, the contents can be easily taken out. Further, after the contents are taken out, when the male occlusal portion 12 of the male member 10 and the female occlusal portion 22 of the female member 20 are pressed against each other with fingers, they are engaged and return to the original state, and the packaging bag 3 with the occlusal device is removed. It can be easily resealed.

A female member 20 is formed by extruding low density polyethylene (trade name Petrocene 190, manufactured by Tosoh Corporation) using a mold, and the center line of the female occlusal portion 22 is the width of the shape holding member 2 and the recess 23. The shape holding member 2 (made by Sekisui Chemical Co., Ltd., trade name Forte) having a band-like thickness t ₁ = 0.4 mm and a width x = 7.0 mm is fitted into the recess 23 arranged so as to pass through the center of the direction. Then, it is integrated by a heat lamination method with the heat of fusion of the female member 20 and cooled, while the same resin as that of the female member 20 is extruded using a male mold to form the male member 10. The concave portion 13 and the shape maintaining member 2 which are arranged so that the center line of the mold occlusal portion 12 passes through the center of the shape maintaining member 2 and the concave portion 13 in the width direction are fitted together, and the fusion heat of the male member 10 is integrated. And after cooling, the female occlusal portion 22 of the female member 20 and the male portion And 10 male interlocking section 12 of the by occlusion, the thickness t ₂ = 0.6 mm of the base portion 21 of the base 11 and the female member 20 of the male member 10, the zipper 1 of strip width y = 12.0 mm winding It was made into a shape.

  A female member 20 is formed by extrusion molding using the same mold and the same resin as in the first embodiment, and a surface that is fitted into the concave portion 23 of the shape retaining member 2 using the same shape retaining member 2 as in the first embodiment. Preheating was performed by exposure to hot air heated to 180 ° C. heated by an infrared heater for 1 second, and the recess 23 of the female member 20 was integrated by a hot air method. The male member was extruded using the same mold and the same resin as in Example 1 to form a male member that did not use the shape retaining member 2. After cooling, the female occlusal part of the female member and the male occlusal part of the male member were occluded, and the belt-like occlusal device was wound up.

  The female member 20 is formed by extrusion molding using the same mold and the same resin as in the first embodiment, and the shape holding member 2 is fitted into the recess 23 of the female member 20 using the same shape retaining member 2 as in the first embodiment. Thereafter, the region 21 provided on the surface of the female occlusal portion 22 was ultrasonically sealed while applying pressure to the base 21 and the shape holding member 2, thereby integrating the shape holding member 2 and the base 21. The male member was extruded with the same mold and the same resin used in Example 1 to form a male member that does not use the shape retaining member 2. After cooling, the female occlusal part of the female member and the male occlusal part of the male member were occluded, and the belt-like occlusal device was wound up.

[Comparative Example 1]
The same mold as in Example 1 is extruded using the same resin to form a female member and a male member that do not use a shape-retaining member. After cooling, the female occlusal portion of the female member and the male member of the male member are formed. The bandage was produced by winding the band-shaped occlusion device with the mold occlusal part.

The occlusion device obtained in Examples 1 to 3 and Comparative Example 1 was heated using a general zipper (occlusion device) three-side seal bag making machine (manufactured by Seibu Kikai Co., Ltd.). Heat-sealed and attached to the sealing layer, and heat-sealed on three sides of the base material to provide a heat-sealed portion 5 to produce a packaging bag 3 with a bite of 200 mm × 250 mm. The occlusion implements of Examples 1 to 3 could be attached to the base material in the same manner as the occlusion implement of Comparative Example 1, and could be made well.
(Lamination structure of base material) Polyethylene terephthalate (thickness 12 μm) / adhesive / aluminum oxide-deposited polyethylene terephthalate (thickness 12 μm) / adhesive / linear low density polyethylene (thickness 60 μm)

  Next, with respect to the packaging bag with the bite, the opening of the bag is picked and pulled with fingers, the bite of the bite is released, the opening state, the adhesive state between the base material and the bite, and the bite And the resealed state was sensory evaluated. As a result, about the packaging bag which attached the occlusion implement of Examples 1-3, the open state was hold | maintained and it was favorable. Moreover, the resealed state was good and the state before the original opening was restored. The bite was well bonded without peeling from the substrate. On the other hand, the packaging bag to which the bite of Comparative Example 1 was attached was good in the bonded state and the resealed state of the bite, but the open state immediately returned to the original state even when opened due to the rigidity of the bite. The return opening is blocked.

  The occlusion device and the packaging bag with the occlusion device of the present invention can be widely used as an openable bag for packaging foods, pharmaceutical cosmetics, miscellaneous goods and the like.

It is sectional drawing which shows one Embodiment of the articulation tool concerning this invention. It is explanatory drawing of the manufacturing method of one Embodiment of the articulation tool concerning this invention. It is a top view which shows one Embodiment of the packaging bag with a biting tool concerning this invention. It is the XX sectional view taken on the line of FIG. It is explanatory drawing regarding opening of the packaging bag of FIG. It is a perspective view which shows the unsealed state of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Occlusion tool 2 Shape holding member 3 Packaging bag with occlusion tool 4 Opening part 5 Heat seal part 10 Male member 11, 21 Base part 12 Male occlusion part 13 Recess 20 Female member 22 Female occlusion part 23 Recess 30 Base material sheet a area | region x Width of shape holding member t ₁ Shape holding member thickness y Width of base portion t ₂ Thickness of base portion z Width between edges of female occlusal portion

Claims (5)

A thermoplastic resin occlusion device comprising a male member and a female member which are engaged with each other, wherein the male member and / or the female member and a shape retaining member made of a thermoplastic resin are thermally fused and integrated. An articulating device characterized by being made. It is a manufacturing method of an articulating device for manufacturing an articulating device according to claim 1, wherein a thermoplastic resin is extruded to form an articulating device, and is bonded to a shape holding member by the melting heat of the articulating device, A method for producing an articulating device, characterized by integrating. The method for manufacturing an articulating device according to claim 2, wherein the shape holding member is heated in advance with hot air, and is bonded to an articulating device to be integrated. A method for manufacturing an articulating device according to claim 1, wherein a thermoplastic resin is extruded to form an articulating device, and the articulating device and the shape-retaining member are ultrasonically sealed and melted. A method for manufacturing an articulating device, characterized by wearing and integrating. The packaging bag with an occlusion device, wherein the occlusion device according to claim 1 is fused to an inner surface of an opening of the packaging bag.

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