JP2005111725A - Attaching method of linear member to gusset bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a linear member attaching method for performing work for attaching a plastically deformable linear member to the inside surface of a gusset bag smoothly and stably after the gusset bag is molded. <P>SOLUTION: In the linear member attaching method for attaching the plastically deformable linear members 12 and 13 to the gusset bag 10 having a pair of front and rear surface parts 16 and a pair of left and right inwardly foldable side surface folding parts 14, a film material 23 having a sealant layer 22 is joined so as to cover both end parts of a coated wire 21, wherein the linear members 12 and 13 are coated with a coating resin 20, to form a wire 11 with a film. This wire 11 with the film is sucked and held to an air sucking device 24 in a predetermined shape and the suction surface 25 of this air sucking device 24 is pressed to the inside surface of the gusset bag having the sealant layer to heat-seal the same to attach the linear members 12 and 13 to the side surface folding parts 14 in a C-shape. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for attaching a linear member to a gusset bag and a gusset bag, and in particular, plastically deforms a gusset bag including a pair of front and rear front portions and a pair of left and right side folding portions that can be folded inside these front portions. The present invention relates to a method for attaching a linear member to a gusset bag and a gusset bag for attaching a possible linear member.

  A gusset bag is a bag comprising a pair of front and rear front portions formed from one or a plurality of sheet materials, and a pair of left and right side folding portions that can be folded into a V shape inside these front portions. Then, from the state where the side folding portion is folded and flatly folded, the folding portion in the vicinity of the opening is opened to form a rectangular upper end opening so that various items can be accommodated inside the upper end opening. It has become.

  Moreover, the use of the gusset bag has expanded by devising the sheet material which comprises this, the form of the said gusset bag, etc. For example, as a bag container containing powdery or granular detergent etc., it is commercialized in a state in which the contents are enclosed by sealing the upper end opening, and the user cuts off the sealing portion at the upper end to form the upper end opening In the gusset bag that can be used by repeatedly taking out the detergent, etc., it is necessary to make it possible to easily close the upper end opening that is opened after the sealing portion is cut off, and the detergent from the upper opening that is opened again. It is necessary to make it easy to take out the etc.

On the other hand, the plastic metal wire and the thermoplastic resin wire were integrally attached to the bag, so that the opening and closing of the bag made of the synthetic resin film can be easily repeated without using another member such as a rubber band. Synthetic resin film bags and most sealing bags are disclosed (for example, see Patent Document 1 and Patent Document 2). These bags can be re-closed or re-sealed after the bags are opened by bending the plastic wire together with the synthetic resin film. The plastic wire is sealed so as to be sandwiched between two thin synthetic resin tapes having adhesiveness and heat-sealability, and attached to the bag together with these synthetic resin tapes by heat-sealing or the like. It is formed as a thermoplastic resin tape composed of a resin and an outer layer resin, and is attached to the bag by heat fusion or the like.
JP-A-2-242750 JP 2000-326996 A

  However, the plastic metal wire and thermoplastic resin wire, which are plastically deformable linear members, are attached to the bag in a sealed state by being sandwiched between synthetic resin tapes or covered with an outer layer resin. However, these plastic wires are pre-attached to a film material for forming a bag by fusion or the like, and then the bag is formed by fusion or the like using the film material to which the plastic wire is attached. Or a linear member that can be plastically deformed, for example, with respect to a gusset bag that is commercialized in a state in which a container is enclosed, For example, there is a case where there is no sealant layer on the outer peripheral surface of the bag to which the linear member is to be fused. Etc., so that various problems occur.

  The present invention is capable of performing a plastic deformable linear member mounting operation on a gusset bag in a smooth and stable state even after molding of the gusset bag, and particularly on the inner surface of the bag after molding. An object of the present invention is to provide a method for attaching a linear member to a gusset bag and a gusset bag to which a plastically deformable linear member can be easily attached.

  The present invention is a linear member mounting method for mounting a plastically deformable linear member on a gusset bag including a pair of front and rear front portions and a pair of left and right side folding portions that can be folded inside the front portions. A wire with a film is formed by sealing and bonding a film material having a sealant layer on one side so as to cover at least both ends of the coated wire covering the linear member with a coating resin from the side. The film-attached wire is adsorbed and held in a predetermined shape on the adsorption surface of the air suction adsorption device via the film material, and the adsorption surface of the air suction adsorption device holding the film-attached wire has a sealant layer. The linear member that can be plastically deformed at a predetermined position of the gusset bag is pressed against the surface to be fused of the gusset bag and heat sealed. By providing a linear member mounting method for a gusset bag mounting in shape, it is obtained by achieving the above object.

  Further, the present invention provides a film material having a sealant layer on one side by sealing and bonding so that at least both ends of a coated wire in which a plastically deformable linear member is covered with a coating resin are covered from the side. Providing a gusset bag in which the plastically deformable linear member is attached to the inner side surface by heat-sealing the formed wire with film to the sealant layer on the inner side surface through the film material. Thus, the above object is achieved.

  Here, the plastically deformable linear member is made of, for example, a metal wire, a plate, a narrow plate, a mesh, a ribbon, or a shape memory alloy, a shape memory resin, etc. It is a linear member that can be bent and deformed, and has plastic deformability to such an extent that the shape after bending can be easily maintained, and when the gusset bag is closed by folding the take-out port, for example. The sheet material has a shape-retaining rigidity at the time of plastic deformation that resists the folding restoring force of the sheet material and can stably hold the folded state of the take-out opening. In addition to the linear member such as a wire, the linear member includes, for example, an elongated strip-shaped member having a certain width.

  The covering resin covering the plastically deformable linear member can be sealed with a sealant layer of a film material by heat fusion or ultrasonic fusion, for example, low density polyethylene, high density polyethylene, polypropylene resin Etc. can be used.

  Furthermore, the predetermined position and the predetermined shape of the linear member attached to the gusset bag are determined depending on the form of the gusset bag, the material to be used, the purpose of use, the type of stored items, etc. The position and shape are appropriately selected and designed so as to be easily taken out.

  According to the method for attaching a linear member to a gusset bag and the gusset bag of the present invention, the operation of attaching a linear member capable of plastic deformation to the gusset bag is performed in a smooth and stable state even after the molding of the gusset bag. In addition, a linear member that can be plastically deformed can be easily attached to the inner side surface of the bag after molding.

  As an example, the method for attaching a linear member to a gusset bag according to an embodiment of the present invention is a gusset that constitutes a detergent product in which, for example, a powdery detergent is enclosed and accommodated as a container, as shown in FIGS. This is employed when the linear members 12 and 13 that can be plastically deformed are attached to the inner surface of the gusset bag 10 after the gusset bag 10 is formed.

  Here, according to the present embodiment, the gusset bag 10 is obtained by subjecting one or a plurality of sheet materials cut into a predetermined shape designed in advance to various known bending processes and joining processes. The body portion of the bag container containing the detergent is surrounded by a rectangular bottom 15 and a pair of front and rear front portions 16 and a pair of left and right side folding portions 14 erected from each side of the bottom portion 15. What is formed as a gusset bag container comprising a trunk portion 17 and an upper portion of the trunk portion 17 that are continuously arranged as a unit and a take-out port portion 18 that is folded back when the gusset bag 10 is closed. It is. Further, the gusset bag 10 is taken out from the upper end outlet 19 after a predetermined amount of powdered detergent, which is a container, is inserted in advance, and then the upper and lower side side folding portions 14 are folded inward in a V shape. The mouth 19 is sealed and sealed, for example, so that the introduced detergent is sealed inside, and the outlet 18 which is an unaccommodated portion of the detergent is folded twice, for example, as a detergent product. It has become.

  Further, according to the present embodiment, as the sheet material constituting the gusset bag 10, for example, a multilayer sheet including an aluminum foil layer is used. Preferably, for example, the first layer as the outermost layer is polyester, the second layer. Is a multilayer sheet having a five-layer structure in which the third layer is made of aluminum foil, the fourth layer is polyethylene, and the fifth layer, which is the innermost layer, is a sealant layer. By using a multilayer sheet including an aluminum foil layer as the sheet material, the folding operation at the time of resealing (resealing) can be facilitated, and further, wrinkles and the like are hardly generated on the bag, and the gusset bag 10 It becomes possible to maintain the appearance of the film. In addition, by providing a sealant layer as the innermost layer, the wire 11 with a film can be heat-sealed, and the plastically deformable linear members 12 and 13 can be attached to the inner side surface of the gusset bag 10 as will be described later. Become.

  And the linear member attachment method of this embodiment is a gusset bag 10 provided with a pair of front and rear front parts 16 as described above and a pair of left and right side folding parts 14 that can be folded inside these front parts 16. A method for attaching plastically deformable linear members 12 and 13, as shown in FIGS. 3 and 4, a covered wire 21 in which the linear members 12 and 13 are covered with a coating resin 20 (see FIG. 4). The film-attached wire 11 is formed by sealing and bonding the film material 23 having the sealant layer 22 on one side so that at least both ends of the film are covered from the side. The suction surface 2 of the air suction adsorption device 24 that holds the wire 11 with the film is held by suction on the suction surface 25 of the air suction adsorption device 24 in a predetermined shape. Is pressed against, for example, the inner side surface of the side folding portion 14 which is a surface to be fused of the gusset bag 20 having a sealant layer, and is heat-sealed, thereby linearly deforming the linear member 12 to a predetermined position of the gusset bag 20, 13 is attached in a predetermined shape.

  Further, according to the present embodiment, the predetermined position of the gusset bag 10 to which the linear members 12 and 13 are attached is substantially the upper half of the side folding portion 14 and the predetermined position to which the linear members 12 and 13 are attached. The shape is a U-shape composed of three linear members 12 and 13 having a lateral linear member 13 interposed at one end portion of a pair of longitudinal linear members 12.

  Furthermore, according to this embodiment, the air suction adsorbing device 24 in which the wire 11 with film is adsorbed and held on the adsorbing surface 25 in a U-shape is inserted into the preformed gusset bag 10 and adsorbed by this. Heat sealing is performed while pressing the surface 25 against the inner side surface of the side folded portion 14 which is the surface to be fused.

  According to this embodiment, the film-attached wire 11 in which the film material 23 is bonded to both ends of the covered wire 21 is easily formed, for example, by the following procedure as shown in FIG. That is, the linear covered wires 21 that have been continuously formed by, for example, extrusion molding and are wound around the take-up reel 26 while the linear members 12 and 13 are covered with the covering resin 20 are drawn out from the take-up reel 26. In addition to guiding to the cutting table 27, the cutting wire 27 is used to sequentially cut the covered wire 21 with a length corresponding to each length of the longitudinal linear member 12 and the lateral linear member 13 using a cutter 28. Go.

  Here, as shown in FIG. 4, the covering wire 21 is, for example, 0.1 to 5.0 mm, preferably 0.3 to 1.0 mm in thickness around the wire as the linear members 12 and 13. Is coated with a thickness of, for example, 0.05 to 3.0 mm using, for example, low-density polyethylene, high-density polyethylene, polypropylene resin, or the like as the coating resin 20. The covering resin 20 preferably covers the linear members 12 and 13 in a wide and flat shape. This makes it possible to improve the handling properties of the linear members 12 and 13 and to fuse them by heat sealing or the like. By increasing the area, it becomes possible to more effectively perform fusion and integration with the film material 23 and the gusset bag 10.

  On the other hand, each pair of strip-like film material 23 is spaced apart so that both ends of the covered wire 21 cut according to the lengths of the longitudinal linear member 12 and the lateral linear member 13 are arranged. And arranged in parallel. And while arrange | positioning the both ends of the some covered | coated wire 21 of each cut | disconnected length on the surface of the side which has the sealant layer 22 of these pair of strip | belt-shaped film materials 23, respectively, The covered wires 21 are arranged in parallel with each other in the direction in which the strip-shaped film material 23 extends in the direction perpendicular to the covered wires 21, and the ends of each covered wire 21 are bonded by heat fusion or ultrasonic waves. The film material 23 is bonded by seal bonding such as fusion.

  Thereafter, each pair of strip-like film material 23 is cut at a gap between the covered wires 21 attached at intervals, thereby covering both ends of the covered wire 21 from the side. The wire 11 with film having a length corresponding to each length of the longitudinal linear member 12 and the lateral linear member 13 to which the 23 is attached is easily formed.

  In addition, according to this embodiment, the film material (sheet material) of the material similar to the sheet material which comprises the said gusset bag 10 is used preferably as the film material 23 which has a sealant layer on one side.

  Next, according to the present embodiment, the wire 11 with a film formed in this way is attached to the adsorption surface 25 of the air suction adsorption device 24 with the sealant layer 22 of the film material 23 on the upper surface side. While arrange | positioning in a letter shape, air 11 is attracted | sucked and the adsorption | suction surface 25 is made to adsorb | suck firmly the arrange | positioned wire 11 with a film.

  Here, the air suction adsorption device 24 used in the present embodiment is connected to, for example, a vacuum suction device and sucks air in an internal air chamber, thereby bringing the air chamber into a negative pressure state and communicating with the air chamber. The wire 11 with a film can be adsorbed and held in an easy and stable state via the film material 23 having a considerable adsorption area on the adsorption surface 25 in which the small holes are dispersedly formed.

  Then, the air suction adsorption device 24 in which the film-attached wire 11 is adsorbed and held on the adsorption surface 25 in a predetermined U-shape, for example, is held in a state where the upper end outlet 19 is opened with the adsorption surface 25 facing upward. The molded gusset bag 10 is inserted into the molded gusset bag 10, and the suction surface 15 of the gusset bag 10 is disposed opposite to the inner surface of the substantially upper half of the one side folded portion 14. Thereafter, the suction surface 25 of the air suction adsorption device 24 is pressed against the inner side surface and heat-sealed, and the film material 23 covering both ends of the covered wire 21 is fused to the inner side surface of the gusset bag 10 and air is sucked. And the air suction / adsorption device 24 is pulled apart, and the plastically deformable linear members 12 and 13 are formed on the inner surface of the substantially upper half of the side folding portion 14 at a predetermined position of the gusset bag 10. It will be attached to the U-shape in a stable state.

  Moreover, the film material 23 is sealed and bonded to both ends of the covered wire 21 by performing the above-described process of attaching the linear members 12 and 13 to the other side folded portion 14 in the same manner. This embodiment as shown in FIG. 2 in which linear members 12 and 13 that can be plastically deformed are attached to the inner side surface by heat-sealing the film-attached wire 11 to the inner side sealant layer. The gusset bag 10 is easily formed.

  Here, according to the gusset bag 10 of the present embodiment formed in this way, longitudinal lines that can be plastically deformed along the four standing edges 29 where the front portion 16 and the side folded portion 14 are connected. As shown in FIG. 5, after the upper end outlet 19 is opened, the cylindrical member 12 is attached to the outlet 18 which is a part folded back downward and the body 17 which is a main body part containing the detergent. When the take-out port 18 is folded back to close the gusset bag 10, the return-restoring force of the take-out port 18 by the sheet material can be effectively resisted and the folded-back state of the take-out port 18 can be stably maintained. Become. Therefore, the sheet material of the take-out port portion 18 is used together with the longitudinal linear member 12 while the upper end take-out port 19 is closed by overlapping the upper ends of the pair of front face portions 16 at the upper end take-out port 19 while folding the side folded portion 14 inward. By simply closing the upper end take-out opening 19 of the gusset bag 10 easily and surely by simply turning it back along the turn-up portion 30, the detergent is stored effectively, and the detergent is repeatedly taken out. Is possible.

  Moreover, according to the gusset bag 10 of this embodiment, since the horizontal linear member 13 is provided between the upper end portions of the pair of vertical linear members 12 so as to cross each side folding portion 14, the upper end is taken out. When opening the opening 19, the lateral linear member 13 is restored and supported in a straight line, thereby extending the side folding portion 14 that has been folded inwardly, and extending the upper end of the rectangular shape. It becomes possible to hold | maintain 19 easily, and it becomes possible to take out the accommodated detergent still more easily and efficiently.

  And according to the linear member attachment method and gusset bag 10 of the present embodiment having the above-described configuration, the attachment work of the linear members 12 and 13 that can be plastically deformed to the gusset bag 10 is performed on the gusset bag 10. Even after molding, the process can be performed in a smooth and stable state, and the linear members 12 and 13 that can be plastically deformed can be easily attached to the inner surface of the bag 10 after molding. That is, according to the present embodiment, the air-suction adsorption device uses the film-attached wire 11 in which the film material 23 having the sealant layer 22 is sealed and bonded to both ends of the coated wire 21 in which the linear members 12 and 13 are covered with the coating resin 20. By holding the suction surface 25 against the inner surface of the gusset bag 10 as a surface to be fused and heat-sealing, the side folding portion 14 which is a predetermined position of the gusset bag 10 is held. Since the linear members 12 and 13 are attached in a U-shape, for example, even when there is a sealant layer that can be fused only on the inner surface of the molded gusset bag 10, the linear member can be plastically deformed. 12 and 13 can be attached to the gusset bag 10 smoothly and easily by a stable flow operation.

  Moreover, according to this embodiment, the film material 23 which covers the both ends of the covering wire 21 from the side is fused to the inner side surface of the gusset bag 10 so as to sandwich the both ends, whereby a linear member is obtained. Since it can protect firmly, without exposing the end surface of 12 and 13, the contact with the linear members 12 and 13 and the detergent which is a containment thing is interrupted | blocked reliably, and it is by contact with the said accommodation thing inside It is possible to effectively avoid damage to the linear members 12 and 13 due to the occurrence of rust or the like.

  Note that the present invention is not limited to the above embodiment, and various modifications can be made. For example, the predetermined shape of the plastically deformable linear member attached to the gusset bag is not necessarily a U-shape, but is a combination of a plurality of other straight lines such as a V-shape or a simple one. It may be a linear shape of a book, or a shape in which a plurality of straight lines and curves are continuous. Further, the predetermined position of the gusset bag to which the linear member is attached may be the front side portion in addition to the side folded portion, or may be attached to the outer side surface of the bag without being limited to the inner side surface. Furthermore, the sheet material constituting the gusset bag to which the linear member is attached is not necessarily a multilayer sheet having the above-described configuration including the aluminum foil layer, and is a sheet material not including the aluminum foil layer or a single-layer sheet material. May be. For example, a sheet material such as polyolefin resin, vinyl chloride, polyester resin, polyamide resin, or the like can be used. Furthermore, the contents contained in the gusset bag do not necessarily need to be a powdery detergent, and contain various other things such as liquid contents such as shampoo and rinse, and solid contents such as confectionery. It can also be used as a bag container.

  In addition, the film material attached so as to cover the covered wire from the side does not necessarily have to be attached in a rectangular shape only to both ends of the wire with film, for example, a circular film piece can be attached, As shown in FIGS. 6A and 6B, the film material 23 can be attached over the entire length of the covered wire 21 to form the wire 11 with a film. In addition, it is preferable to perform the joining of the covering wire 21 and the film material 23 in this case by the dotted 31 by an ultrasonic seal.

It is a perspective view which shows the detergent product using the gusset bag with which the linear member was attached by the linear member attachment method which concerns on one Embodiment of this invention. It is a perspective view which shows the gusset bag to which the linear member was attached by the linear member attachment method which concerns on one Embodiment of this invention. It is explanatory drawing of the linear part attachment method which concerns on one Embodiment of this invention. It is a perspective view explaining the structure of a covered wire. It is a perspective view which shows the gusset bag of the state which turned the taking-out opening part. It is a top view which illustrates other forms of a wire with a film.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Gusset bag 11 Wire 12 with film Vertical linear member 13 Horizontal linear member 14 Side fold part 15 Bottom part 16 Front part 17 Trunk part 18 Outlet part 19 Upper outlet part 20 Coating resin 21 Covering wire 22 Sealant layer 23 Film Material 24 Air Suction Adsorption Device 25 Adsorption Surface 25 Band-shaped Seal Material 26 Take-up Reel 28 Cutter

Claims (5)

A linear member mounting method for mounting a plastically deformable linear member on a gusset bag comprising a pair of front and rear front portions and a pair of left and right side folding portions that can be folded inside the front portions,
A wire with a film is formed by sealing and joining a film material having a sealant layer on one side so as to cover at least both ends of the coated wire covering the linear member with a coating resin from the side,
The wire with film is adsorbed and held in a predetermined shape on the adsorption surface of the air suction adsorption device via the film material,
A wire that can be plastically deformed at a predetermined position of the gusset bag by pressing the adsorption surface of the air suction adsorption device holding the wire with the film against a surface to be fused of the gusset bag having a sealant layer and heat-sealing. The linear member attachment method to the gusset bag which attaches a shape member in the said predetermined | prescribed shape. The gusset bag has a sealant layer that serves as the surface to be fused on the inner surface thereof, and the air suction adsorbing device is inserted into the gusset bag to heat the suction surface against the inner surface. The method of attaching a linear member to a gusset bag according to claim 1, wherein the gusset bag is sealed. The predetermined position to which the linear member is attached is the side folded portion, and the predetermined shape to which the linear member is attached is that a lateral linear member is interposed at one end portion of a pair of vertical linear members. The method for attaching a linear member to a gusset bag according to claim 1 or 2, wherein the method is a U-shape comprising three linear members. A wire with a film formed by sealing and joining a film material having a sealant layer on one side so as to cover at least both ends of a coated wire in which a plastically deformable linear member is covered with a coating resin from the side. However, the gusset bag in which the plastically deformable linear member is attached to the inner side surface by being heat sealed to the sealant layer on the inner side surface through the film material. The wire with film is heat-sealed at the side folding portion, and the plastically deformable linear members are three linear members in which a lateral linear member is interposed at one end portion of a pair of vertical linear members. The gusset bag according to claim 4, wherein the gusset bag is attached in a U shape.

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