JP2009143601A - Bag body with through hole for holding and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag body with a through-hole for holding which reduces pain to a finger in using the same inserting the finger in the hole. <P>SOLUTION: This bag body with a through-hole for holding is made of a laminated film which has a heat seal layer on the innermost side of a base material film containing a layer laminating at least two stretched film layers using an adhesive agent. In forming the bag, the heat seal layer faces to be superimposed, an outer periphery is heat sealed to be in a bag shape and a through-hole for holding is formed on the outer periphery. At least a part of the peripheral edge of the hole has an unsealed part. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a package with a through-hole for a handle, which contains contents such as liquid, viscous material, solid, powder, granule, etc., and has a through-hole for a handle in any one of the heat seal parts. The through hole for a handle is suitable for storing foods, reagents, and pharmaceuticals because it can reduce finger pain from the periphery of the through hole for the handle when the bag containing the contents is suspended with the finger through the through hole for the handle. The present invention relates to an attached package and a method for manufacturing the same.

  Conventionally, there are tube-type, three-side seal, four-side seal, pillow-type, standing type, etc. bags containing fluid contents such as liquids and viscous bodies, which are used by hooking the heat seal part. A bag body provided with a suspension hole for inserting a handle and a through hole for a handle for inserting a finger is often used in a medical field (for example, see Patent Document 1). In Patent Document 1, a standing pouch having a flexible pouch side wall portion and a pouch bottom portion that are heat-welded to form a self-supporting bag body is provided with an inclined portion at one corner of the upper side and the side side of the pouch side wall portion. In addition, a standing pouch with a spout is disclosed in which a spout for pouring contents onto the inclined portion is thermally welded, and a suspension hole is provided in a thermally welded portion located diagonally to the spout. When the standing pouch is used, the pouch can be turned upside down, the suspension hole can be hooked on the support column, a draining needle can be inserted into the lower liquid extraction portion, and the content liquid can be gradually discharged.

Such a suspension hole is not limited to simply being used for hanging the stand, but can be a through-hole for a handle in which a hole diameter can be increased and a finger can be inserted (see, for example, Patent Document 2). Patent Document 2 discloses a packaging bag having a cut and a through hole formed on both sides of the cut on at least one side of the heat seal side. By hooking a finger on the through-hole, the packaging bag can be securely held even under conditions in which a hand or the like is slippery. By inserting a finger into the through-hole and pulling it left and right, 2 It can be divided.
JP 2002-104446 A Japanese Utility Model Publication No. 5-51706

  However, a bag formed by heat-sealing the outer periphery uses a laminated film having an outer base film layer and at least an innermost heat-sealing layer, and the heat-sealing layers are stacked facing each other. In addition, the outer periphery is generally heat-sealed and molded, and the heat-sealed portion has high rigidity. The penetrating through-hole and handle through-hole formed in the heat-sealed portion give tenderness because the edge of the handle through-hole hits almost perpendicularly to the finger when passing a finger, or the handle through-hole The finger may be injured by the rigidity of the edge. In order to maintain the strength of the heat-sealed part, the handle through-hole is made small in the range that does not hinder use, so if the package shakes or rotates with the finger inserted, the edge of the handle through-hole A cut may be formed on the finger surface at the edge.

  In particular, infusion bags with an internal volume of more than 2 kg have been distributed in recent years, and the handle through-holes and heat seals have been provided to ensure the shape-retaining ability to maintain the shape when suspended from a stand. The part needs to be provided with rigidity capable of resisting the above weight. For this reason, when the operator wears rubber gloves, there is a possibility that the rubber gloves may be damaged by the handle through-hole, and there is a risk of damaging not only the fingers but also the rubber gloves. For this reason, when such a bag body is used in a medical field, the chance of infection increases due to damage to fingers and rubber gloves, and the user is not aware of such scratches or damage to rubber gloves. In some cases, the infection can spread throughout the hospital.

  In addition, when the handle through-hole is hung from the stand for display or used by being hung from the stand for the purpose of gradually discharging the contents, the shape thereof needs to be maintained stably. If the handle through-hole is formed in the unsealed portion of the bag body, the handle through-hole expands when the finger is inserted because the rigidity is insufficient, and the finger or the stand falls out of the bag body. It can be difficult.

  In addition, if the through hole for the handle is formed in the unsealed portion, a plurality of films in the shape of the through hole are generated as a residue in the hole extracting process, and these are charged and attached to the bag body as a final product. Thus, in the filling process of the contents, there is a case where the waste residue enters the bag together with the contents and causes a sanitary inconvenience.

In view of the above-mentioned present situation, an object of the present invention is to provide a bag body with a through-hole for a handle that is excellent in strength and does not damage a finger even when the finger is inserted during use.
Furthermore, it aims at providing the manufacturing method of the bag body with the through-hole for handles which can form the through-hole for handles which is excellent in a softness | flexibility, without the scraps being scattered at the time of manufacture.

  As a result of various studies to solve the above problems, the present inventor has obtained from a laminated film in which a heat seal layer is formed on the innermost side of a base film including a layer in which at least two stretched films are laminated. If the bag body has a heat-sealing layer facing each other, the outer periphery is heat-sealed and formed into a bag shape, and the handle is provided with a through-hole for a handle, the shape retention during use If an unsealed part is formed on at least a part of the periphery of the through hole for the handle, even if the bag is lifted by a finger inserted into the through hole for the handle, the contact surface increases due to the unsealed part. Therefore, it has been found that tenderness can be reduced, and that it is possible to avoid hurting fingers when touching the edge, and when forming the through hole for the handle, heat is applied to at least a part of the hole side of the through hole for the handle. Form a seal It is, also in forming the through hole by the punching blade, to reduce the generation of copies of the scrap, it found to be able to avoid the occurrence of particularly thin film-like scrap, thereby completing the present invention.

  The bag body with a through-hole for a handle according to the present invention can avoid finger tenderness and breakage of fingers, gloves and the like even if a bag is held by inserting a finger into the through-hole for the handle by forming an unsealed portion. . For this reason, when a medical staff handles, the risk of nosocomial infection can be avoided.

  In addition, the bag body with a through hole for a handle of the present invention is formed by stacking the heat seal layers of the laminated film whose innermost layer is a heat seal layer facing each other, heat-sealing the outer periphery, and forming the bag shape, Since the bag body is provided with a handle through-hole in the heat seal portion, and a laminated film in which a heat seal layer is formed on the innermost side of a base film including a layer in which at least two stretched films are laminated is used. In addition, various functions such as gas barrier properties, rigidity, and light-shielding properties can be ensured, and the contents can be stored well and have excellent shape retention during use.

  Further, according to the manufacturing method of the present invention, since at least a part of the inside of the handle through-hole is heat-sealed, the foreign matter generated by adhering to the exterior of the product or mixing inside the product Mixing can be avoided.

  In the first aspect of the present invention, the heat seal layer of the laminated film whose innermost layer is a heat seal layer is opposed to each other, the outer periphery is heat sealed and formed into a bag shape, and the handle is penetrated into the heat seal portion. A bag provided with holes, wherein the laminated film is a laminated film in which a heat seal layer is formed on the innermost side of a base film including a layer in which at least two stretched films are laminated, and the through hole for a handle Is a bag body with a through hole for a handle, wherein an unsealed portion is formed on at least a part of the periphery. Hereinafter, the present invention will be described in detail with reference to the drawings.

(1) Bag body with handle through-hole According to the present invention, the bag body with handle through-hole (10) is heat-sealed on the outer periphery of the bag body as shown in FIG. 40) A handle through-hole (20) is provided. An unsealed portion (30) is formed on the periphery of the handle through-hole (20). When inserting the finger into the handle through-hole (20) of the bag through-hole for handle (10) in which the contents are stored and sealed, and lifting the bag body with the through-hole for handle (10), The unsealed portion (30) formed at the peripheral edge of the handle through-hole (20) can disperse the weight and avoid tenderness, or prevent the occurrence of scratches that come into contact with the handle through-hole (20). it can. The handle through-hole (20) can also be used as a hanging hole for hanging on a hook or the like.

  The size of the handle through-hole (20) can be appropriately selected depending on the application. FIG. 1 (b) shows a partially enlarged view of FIG. 1 (a). As shown in FIG. 1 (b), in the case of a bag (10) into which one finger is inserted, it is converted into an equivalent circle. And it is preferable that the diameter (h1) of the through-hole (20) for handles is 18-25 mm, More preferably, it is 20-23 mm. If the diameter is less than 18 mm, it may be difficult to insert one finger. On the other hand, if the diameter exceeds 25 mm, the shape of the handle through-hole (20) during use is maintained, so the width of the heat seal part (30) is reduced. It is necessary to make it 40 mm or more, which is uneconomical. The above is the size when one finger is inserted, but it is assumed that multiple fingers are inserted, such as when the contents are heavier or the bag is assumed to be a handbag In addition, the size of the handle through-hole (20) is not limited to the above.

  The present invention is characterized in that an unsealed portion (30) is formed at the peripheral edge of the handle through-hole (20), but the width (h2) of the unsealed portion (30) depends on the weight of the contents and usage It can select suitably by the kind of laminated | multilayer film to perform. Generally, it is 1 to 10 mm, more preferably 1 to 5 mm. When the thickness is less than 1 mm, the effect of dispersing the pressure on the finger may be weak. When the thickness exceeds 10 mm, the dispersion effect is small, and the heat seal portion is reduced and the strength may be lowered.

  1 (a) and 1 (b) show a circular through-hole (20) for a handle, but it is not limited to a circular shape as long as it penetrates, and an elliptical shape, barrel shape, semicircular shape, and many It may be square or other. On the other hand, when a notch is formed, such as when a notch that can be penetrated by a finger or the like is formed without forming a through hole, or when a notch is combined with a notch, depending on the weight of the contents, from the notch The bag may tear, which is not preferable.

  The heat seal part (40) formed in the bag body (10) with a through-hole for handles can be appropriately selected according to the shape of the bag body (10). The handle through hole (20) may be formed in any one of the heat seal portions (40). Further, in the case where the handle is suspended from the hook through the bag body with through hole (10), the handle through hole (20) is generally formed in the top seal portion, but this is not the only case. Is not to be done.

  On the other hand, the heat seal part (40) in which the handle through hole (20) is formed has a shortest distance of 5 to 5 from the end of the unsealed part (30) provided at the periphery of the handle through hole (20). It is formed to be 30 mm, more preferably 5 to 15 mm. If the thickness is less than 5 mm, the shape retaining property of the handle through-hole (20) or the heat seal portion (40) in the vicinity thereof may be reduced during use, while the effect does not change even if the thickness exceeds 30 mm. It is useless. In FIG. 1B, the shortest distance is illustrated as h3 or h4.

  As described above, the heat seal portion (40) in which the handle through-hole (20) is formed is not limited to the top seal portion, and may be any one of the horizontal seal portion and the overlapping portion between the horizontal seal portion and the top seal portion. There may be, and the shape is not limited to the strip shape as shown in FIG.

  A laminated film formed by laminating a heat seal layer (87) on a base film formed by laminating a stretched film (81), an adhesive layer (83), and a stretched film (85). FIG. 2 shows the AA ′ cut surface of FIG. On both sides of the handle through-hole (20), an unsealed portion (30) is formed in a state where the laminated heat seal layer (87) is separated without being laminated. In the present invention, “unsealed” refers to a state in which the innermost heat seal layer is not fused when the bag body is heat-sealed to form a bag.

  FIG. 3 shows the relationship between the finger (60) and the partial cross section of the heat seal portion (40) when the bag (10) is lifted by inserting the finger (60) into the conventional handle through-hole (20). Show. Since there is no unsealed portion in the handle through-hole (20), the finger (60) directly contacts the heat seal portion (40). For this reason, the cut surface at the time of forming the handle through-hole (20), that is, the heat seal portion (40) bites into the finger (60) due to the weight of the contents of the bag (10), and a large load is applied. The stretched film used as the base film is used because it has sufficient hardness to impart mechanical strength and rigidity to the laminated film, and generally has a low waist and is sharp when forming the handle through-hole (20). In order to cut, a corner | angular part stands on the outer periphery and it is easy to injure a finger | toe. For this reason, even when a finger is not passed through the handle through hole (20), the finger may be damaged only by touching the outer periphery of the handle through hole (20). On the other hand, in this invention, fingers can be protected by the unsealed part (30). That is, as shown in FIG. 4, since the unsealed part (30) which consists of two laminated films is formed in the edge part of a heat seal part (40), a finger | toe (60) is put in the through-hole for grips (20). Even when the bag body is inserted and lifted, the laminated film of the unsealed portion (30) is not bent in the tangential direction of the finger (60), and the finger (60) does not touch the cut end of the handle through-hole (20). Since the unsealed portion (30) at the cut end has low rigidity, it does not hurt fingers even if it comes into contact.

  In the present invention, the mode of the unsealed portion (30) is not limited to the above. For example, as shown in FIG. ) And a heat seal layer (87), a resin reservoir (89) may be formed at the fused end. For example, when the outer periphery of the unsealed portion (30) on the outer periphery of the handle through-hole (20) is further sealed at a high pressure, the resin reservoir (89) is free of the resin constituting the innermost heat seal layer (87). The process proceeds to the seal part (30), and a resin reservoir (89) is formed at the boundary between the heat seal and the unsealed part. In FIG. 5, reference numeral 43 denotes a high-pressure seal portion.

  FIG. 6 shows a finger inserted into the handle through-hole (20) having an unsealed portion (30) in which a resin reservoir (89) is formed at the fusion end portion of the heat seal layer (87) and the heat seal layer (87). The relationship between the finger | toe (60) and the partial cross section of the heat seal part (40) at the time of inserting (60), a high voltage | pressure seal part (43), a resin reservoir (89), and an unsealed part (30) is shown. Since the two laminated films constituting the unsealed portion (30) spread left and right due to the presence of the resin reservoir (89) and contact the finger (60), the contact area between the finger (60) and the unsealed portion (30) And the load on the finger (60) can be further reduced. Further, although different from FIG. 6, even when the laminated film constituting the unsealed portion (30) overlaps and bends in the same direction, it is once spread by the resin reservoir (89) and then folded, so that it is bent to the finger (60). Can be reduced. When the resin reservoir (89) is formed, the load on the finger can be further reduced by increasing the width (h2) of the unsealed portion (30) within the above range.

  In the bag body with a through hole for a handle according to the present invention, the heat seal portion (40) does not need to maintain a uniform thickness, and a part such as when a high pressure seal portion is formed as shown in FIG. A recess may be formed on the surface.

  The shape of the bag body with a through hole for the handle may be any of a tube shape, a three-side seal, a four-side seal, a pillow shape, a standing type, a gusset type, an envelope-attached seal type, and the size of which is appropriately selected according to the application. can do. The bag body with a through hole for a handle of the present invention may further be provided with a pouring tool, a hanging hole, an opening / closing chuck, an opening / closing notch, and the like. In FIG. 7, a circular handle through-hole (20) is formed at the overlapping portion of the top seal portion and the lateral seal portion, and an unsealed portion (30) is formed in approximately half of the periphery of the handle through-hole (20). A bag body (10) with a through-hole for a handle, in which a high-pressure seal portion (40) is formed and a pouring tool (50) is provided at a diagonal of the through-hole for handle (20). When a finger is passed through the handle through-hole (20) of the bag (10) and hung on the hook, the finger contacts a part of the handle through-hole (20) and receives the weight of the bag (10). The unsealed part (30) is formed only in the part where the finger contacts. When the handle through-hole (20) is suspended from the hook, the handle through-hole (20) and the pouring tool (50) provided diagonally become vertical, and the contents from the pouring tool (50). Can be discharged. In addition, an unsealed part (30) is formed only in the substantially half of the periphery of the said through-hole for handles (20), and, thereby, the area of a heat seal part (40) can be made small.

  FIG. 8 shows an example of the bag body (10) with a through hole for a handle according to the present invention in which a dedicated hanging hole (53) is provided separately from the handle through hole (20) with an unsealed portion (30). This is an example. A through-hole (20) for a handle and a suspension hole (53) are formed in the top seal portion, and a pouring tool (50) is formed in the bottom seal portion. In the present invention, the handle through-hole (20) may be used as a suspending hole (53) for suspending the bag (10) on the hook as long as the end of the hole comes into contact with the finger. .

  FIG. 9 shows a bag body (10) provided with an openable / closable chuck (55) under the top seal portion. Any one of the two laminated films forming the bag body above the chuck (55). An opening (56) formed by forming a notch in one sheet is provided, a circular through hole (20) for a circular handle is formed on both side seal portions, and an extraction tool (50) is formed on the bottom seal portion. . The bag is made in a state where the opening (56) is opened at the upper part of the chuck (55), and for example, enteral nutrients prepared according to the patient's condition can be filled and administered in a hospital. . After opening the chuck (55), if you insert your thumb and forefinger into the handle through-hole (20), you can open the mouth of the bag with one hand and the contents in the bag (10) with one free hand Can be stored. In FIG. 9, an unsealed part (30) and a high-pressure seal part (43) are formed in the upper part of the handle through hole (20), and a bag is inserted into the handle through hole (20) by inserting a finger. Even when the arm is lifted, finger tenderness and wounds can be avoided. Since the unsealed part (30) and the high-pressure seal part (43) were formed limited to the upper part of the handle through-hole (20), the area of the heat seal part (40) could be reduced. In addition, a suspension hole (53) is formed in the top seal portion above the opening, and the bag body in which the contents are stored can be used in a state suspended from the hook.

  FIG. 10 shows an embodiment of the pouring tool (50) and the bag body (10) with a handle through-hole according to the present invention. A handle through-hole (20) is provided in the bottom material portion of the standing pouch. The aspect by which the extraction tool (50) was provided in the corner | angular is shown. The film constituting the standing pouch for maintaining independence is strong, and particularly the bottom where the two heat seal portions (40) overlap is extremely rigid. In FIG. 10, the handle through-hole (20) is formed in the heat seal portion (40) having such a high rigidity, and the unsealed portion (30) and the high-pressure seal are formed on a part of the periphery of the handle through-hole (20). The aspect in which the part (43) was formed is shown. The formation of the unsealed portion (30) can greatly reduce the load on the finger. In addition, the broken line in a figure is a bending edge part of the bottom part of a standing pouch.

(2) Base film The base film used in the present invention comprises a layer obtained by laminating at least two stretched films.

  The stretched film can be a synthetic resin film having excellent mechanical, physical, chemical and other properties sufficient to form a bag. For example, a polyolefin film such as polypropylene or polyethylene; polyethylene terephthalate (PET And polyester film such as polyethylene naphthalate (PEN); polyamide film such as 6,6-nylon; polycarbonate film; polyacrylonitrile film; polyimide film and the like. The stretched film may be a uniaxially stretched film or a biaxially stretched film, and a biaxially stretched film can be suitably used in that it has mechanical strength and dimensional stability.

  In the present invention, as the stretched film, a polyvinylidene chloride resin film, a resin film coated with a composition mainly composed of polyvinylidene chloride resin or polyvinyl alcohol, or a stretched polyamide resin film such as metaxylenediamine (MXD) nylon , Biaxially stretched multilayer polyamide film including ethylene-vinyl alcohol copolymer resin layer, cyclic polyolefin film, polyacrylonitrile film, film made of saponified ethylene-vinyl acetate copolymer, substrate layer with silicon oxide, aluminum oxide, oxidized A stretched resin film having a transparent vapor deposition film of a metal oxide such as indium, tin oxide, or zirconium oxide may be used, and gas barrier properties can be imparted. In addition, as a base material layer of a film having a metal oxide vapor deposition film, a polyester resin film such as polyethylene terephthalate, a polyamide resin film such as various nylons, a polyethylene resin, a polypropylene resin, a cyclic polyolefin resin, Polystyrene films such as polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polybutene resin film, polyvinyl chloride resin, polycarbonate resin, polyimide resin, Polyamideimide resin, polyaryl phthalate resin, silicone resin, polysulfone resin, polyphenylene sulfide resin, polyethersulfone resin, polyurethane resin, cellulose resin, poly (meta Acrylic resins, polyvinylidene chloride film, acetal resin film, fluorine-based resins, there are other stretched film. As the film thickness of the vapor-deposited film of the inorganic oxide, a film having a thickness of 50 to 3000 mm, more preferably 100 to 1000 mm can be suitably used. Commercially available products can also be used as the gas barrier film. For example, product names “IB-PET-WUB” and “IB-ON-FWRC” manufactured by Dai Nippon Printing Co., Ltd. can be preferably used. .

  The stretched film used in the present invention uses one or more of the resins constituting the film, and when forming the film, for example, film processability, heat resistance, weather resistance, mechanical properties, dimensional stability Various plastic compounding agents and additives are added for the purpose of improving and modifying properties, antioxidant properties, slipping properties, mold release properties, flame retardancy, antifungal properties, electrical properties, strength, etc. Depending on the purpose, it can be optionally added up to several tens of percent.

  The stretched film of at least two layers constituting the base film may be the same or different. An example of using different stretched films is a laminated film of a biaxially stretched polypropylene film and a biaxially stretched polypropylene film.

  A stretched film can be laminated through an adhesive to form a base film. For example, the base film can be prepared by a dry lamination method in which bonding is performed using a two-component reaction curable adhesive, a non-solvent lamination in which bonding is performed using a solventless adhesive, or the like. In the present invention, the metal foil or the unstretched film layer may be further laminated between the two stretched films and bonded together with the adhesive. On the other hand, the stretched film may be laminated by a T-die extrusion lamination method using a heat-adhesive resin. At this time, a multilayer film may be prepared by co-extrusion.

  In addition, the base film used in the present invention is further laminated between the two stretched films described above, and further laminated with a metal foil such as aluminum, iron, copper, tin or the stretched film or an unstretched film thereof. The metal foil or stretched film constituting the base film may be subjected to surface treatment. Adhesiveness and printability can be imparted. In addition, you may form a printing layer in the surface or back surface of either layer of a base film.

As the thickness of the base film, a film having a thickness of 9 to 50 μm can be suitably used in order to ensure strength, rigidity and the like.
(3) Heat Seal Layer As the heat seal layer that can constitute the innermost layer, resin layers that can be melted by heat and fused to each other can be used. Specifically, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene -Resins such as ethyl acrylate copolymer, ethylene-methacrylic acid copolymer, and their metal crosslinks, ethylene-α / olefin copolymer polymerized using metallocene catalyst, polypropylene, ethylene-methyl methacrylate Polyolefin resins such as copolymers, ethylene-propylene copolymers, methylpentene polymers, polybutene polymers, polyethylene or polypropylene, and unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, and itaconic acid. Acid-modified polymorphs modified with acid Olefin resins, polyvinyl acetate resins, poly (meth) acrylic resin, a co-extruded film consisting of one or more films or sheets or resin constituting them made of a resin such as polyvinyl chloride resin can also be used.

  Various additives such as lubricants, fillers, heat stabilizers, antioxidants, ultraviolet absorbers, antistatic agents, flame retardants, and colorants are added to the heat seal layer as necessary. There may be.

  The heat seal layer generally uses one or more of polyolefin resin, polyester resin, polystyrene resin, and polylactic acid resin, and is an extrusion method, cast molding method, T-die method, cutting method, inflation method. Formed into a single layer using a film-forming method such as a method or the like, or a multilayer film formed by co-extrusion using two or more resins, or a mixture of two or more resins And can be formed into a film.

  As the heat seal layer, a film having a heat seal property and a barrier property such as a saponified ethylene / vinyl acetate copolymer, a cyclic polyolefin, and polyacrylonitrile may be used.

In this invention, 10-150 micrometers is preferable and, as for the thickness of a heat seal layer, 15-80 micrometers is more preferable.
(4) Laminated film The laminated film used in the present invention is a laminated film in which a heat seal layer is formed on the innermost side of the base film.

  In order to laminate the heat seal layer on the base film, the film constituting the heat seal layer is bonded to the base film layer by a dry laminate or a non-sulfur laminate using a two-component reaction curable adhesive, or The film which comprises a heat seal layer can be prepared by laminating | stacking by T-die extrusion lamination of heat-fusible resin, such as polyethylene. In the case of the extrusion lamination method, an anchor coating agent can be used as necessary.

  In addition, the laminated | multilayer film used by this invention may have another layer between the said base film and a heat seal layer. Examples of such other layers include the stretched film, the metal foil, and an unstretched film made of a constituent resin. These may be bonded by the above-mentioned adhesive, or may be laminated by a T-die extrusion lamination method using a heat-adhesive resin. For example, a base film is prepared by laminating two stretched films by a dry laminating method, and a metal foil is bonded to the base film by T-die extrusion lamination of polyethylene resin, and a linear low density as the innermost layer. A film obtained by laminating a polyethylene film by T-die extrusion lamination of polyethylene resin can be exemplified. In addition, when it is necessary to sterilize the contents, a method of laminating by a laminating method using a two-component curable urethane adhesive is excellent in heat resistance and is preferable.

  In addition, the laminated film used in the present invention may further laminate any one of a metal foil such as aluminum, iron, copper, tin and the stretched film between the base film and the heat seal layer. In addition, the metal foil or stretched film constituting the laminated film may be subjected to a surface treatment. Adhesiveness and printability can be imparted. In addition, you may form a printing layer in the surface or back surface of either layer of a laminated | multilayer film.

  The laminated film used in the present invention may be further provided with an outer layer such as OP varnish on the surface side of the base film. As such an outer layer, it can select suitably by the use of a base film. The outer layer can be a laminate of two or more layers, and a design print layer may be formed on the outer layer.

As the thickness of the laminated film, a film having a thickness of 40 to 300 μm can be suitably used in order to ensure strength, rigidity, and the like.
(5) Manufacturing method of bag body with through-hole for handle In the bag body with through-hole for handle according to the present invention, a heat seal layer is formed on the innermost side of a base film including a layer in which at least two stretched films are laminated. A laminated film is used, and an unsealed portion is formed on at least a part of the periphery of the through hole for a handle formed in the heat seal portion. At this time, if the through hole for the handle is removed without heat-sealing the inside of the through hole for the handle, the light and charged unsealed film adheres to the bag body, and it is not easy to remove it. Sometimes it gets mixed in. In order to avoid this problem, in the present invention, the outside and inside of the through hole forming position for the handle are heat sealed, and then the through hole for the handle is formed at the forming position of the through hole for the handle on the outer periphery. A perforated bag is manufactured. That is, the second of the present invention is a method of manufacturing a bag body in which the outer periphery is heat-sealed and formed into a bag shape, and the outer peripheral portion is provided with a handle through-hole, and includes at least two layers of stretched films. A laminated film in which a heat seal layer is formed on the innermost side of the base film including the laminated layers is overlapped with the heat seal layer facing each other, the outer periphery of the overlap portion, and the position of the formation of the through hole for the handle A method of manufacturing a bag body with a through-hole for a handle, wherein the outer and inner sides are heat-sealed, and then a handle through-hole is formed at a position where the handle through-hole is formed on the outer periphery. Hereinafter, a method for forming a handle through-hole having a characteristic unsealed portion will be described with reference to the drawings.

  In the present invention, “outside and inside the formation position of the handle through-hole is heat-sealed” means that the outside and inside of the extraction position for forming the handle through-hole is heat-sealed. As a result, an unsealed portion is formed on at least a part of the outer periphery of the handle through hole, and a seal portion is formed inside the handle through hole. In FIG. 11A, the handle through hole (20) formation position (23) is indicated by a broken line, and the outer line (25) and the inner line (27) are indicated by a solid line. The range surrounded by the solid lines of the outer line (25) and the inner line (27) is unsealed (30), and the other area is the heat seal part (40). FIG. 11B shows a state after the handle through-hole (20) is removed. Note that the punched piece generated when the handle through-hole (20) is formed has a heat seal part (40) in part, so it is not separated into each laminated film, and is prevented from adhering to the bag body due to its gravity and rigidity. Is done.

  In the present invention, it is only necessary to prevent a part of the punched piece generated when forming the handle through-hole from being separated by heat-sealing the inside of the handle through-hole. A part of the position may be heat-sealed. This is because even in such an embodiment, the unsealed portion can be formed on a part of the outer periphery of the handle through-hole, so that the finger can be prevented from being scratched and the punched piece can be prevented from being separated. Accordingly, as shown in FIG. 12 (a), the cross heat seal portion is located inside the handle through hole extraction position (23), and the outside of the extraction position (23) connected to the ten o'clock heat seal portion. Heat sealing may be performed so as to form the circular heat sealing portion of (25). FIG. 12B shows a state after the handle through hole (20) is pulled out at the pull out position (23) of the handle through hole. Unsealed portions (30) are formed at four locations on the outer periphery of the handle through-hole (20), and the punched piece has a heat seal portion (40) in part, so it is not separated into each laminated film, The rigidity prevents the bag from adhering.

  Moreover, the aspect which makes the inside of the semicircle centering on the center of the through-hole for circular handles the unsealed part (30) may be sufficient as Fig.13 (a). This is because at least a part of the outside and inside of the handle through-hole forming position is heat-sealed, and at the same time, an unsealed part is formed on a part of the outer periphery of the handle through-hole, and separation of the punched piece is prevented. is there.

  In the present invention, a high-pressure seal portion that is heat-sealed at a pressure higher than the others may be formed in a predetermined range of the heat seal portion outside the grip through-hole forming position at the time of heat sealing. This aspect is shown in FIG. FIG. 14 (a) shows a high-pressure seal portion (43) formed in a predetermined range outside FIG. 11 (a). FIG. 14 (b) shows a state after the handle through-hole (20) is removed. State. FIG. 15 shows a schematic cut surface taken along the line X-X ′ of FIG. As shown in FIG. 15, by forming a high-pressure seal portion (43) on the outer periphery of the unsealed portion (30), the melted innermost heat seal layer (87) is deformed toward the unsealed portion (30). Since the resin film (89) is formed and the laminated film (80) constituting the unsealed portion (30) is opened, the load on the finger when the finger is inserted into the handle through-hole (20) can be reduced. it can.

  As a method for forming the high-pressure seal portion (43), only a portion corresponding to the high-pressure seal portion (43) of the heat seal bar forming the heat seal portion (40) is provided with a protrusion of about 0.1 to 0.5 mm. Alternatively, the method of partially increasing the heat seal pressure, or the heat seal portion (40) and the high pressure seal portion (43) may be separately heat sealed, and the high pressure seal portion may be heat sealed at a temperature higher than the others. The method of forming the high-pressure seal part using the heat seal bar can be heat-sealed in one process, and the positioning of the heat seal part (40) and the high-pressure seal part (43) is unnecessary in the bag making process. There are advantages to doing. On the other hand, the method of forming the high-pressure seal part (43) in two steps allows the temperature and pressure to be adjusted by the high-pressure seal part (43) alone, so that the resin reservoir (89) can be easily formed. When the high-pressure seal portion (43) is formed in a separate step from the heat seal portion (40), if the high-pressure seal portion (43) is formed first, the resin reservoir (89) formed at the end of the high-pressure seal portion (43). ) May make it difficult to remove air from the outer end of the high-pressure seal portion (43), and it is preferable to form the high-pressure seal portion (43) after forming the heat seal portion (40).

  In the present invention, as a heat sealing method, for example, a known method such as a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, or an ultrasonic seal can be used. Moreover, you may form a high voltage | pressure seal | sticker part (43) by making a horn into a ring shape using an ultrasonic sealing apparatus.

  The high-pressure seal part (43) is only required to form a resin reservoir (89) at the fusion part of the heat seal layer at the end of the unsealed part (30) by increasing the pressure more than the others. The degree of high pressure can be set arbitrarily. In the present invention, in any manufacturing method, the resin reservoir (89) may be formed after heat sealing, and the resin reservoir (89) may be formed only by adjusting the temperature.

  In the heat sealing process, it is common to cool with a cooling bar after heat sealing. However, in this cooling method, the resin reservoir (89) may be crushed. Before cooling, the resin reservoir (89) may be solidified by blowing cold air, or the cooling pressure may be reduced by lowering the hardness of the receiving rubber plate of the cooling bar to suppress the collapse of the resin reservoir (89).

(6) Use The bag body with a through hole for a handle according to the present invention can be used by being filled with, for example, a food or drink, a reagent, a powdered drug, an infusion solution, blood, or an enteral nutrient. Since the bag body with a through hole for a handle according to the present invention has an unsealed portion formed on the outer periphery of the through hole for the handle, it can be prevented from being damaged even if a finger is inserted. In addition, the strength of the seal portion is excellent, and an excellent effect can be exerted in applications where the seal portion is suspended for a long time.

EXAMPLES Next, although an Example is given and this invention is demonstrated concretely, these Examples do not restrict | limit this invention at all.
(Production Example 1)
A biaxially stretched polyethylene terephthalate film with a thickness of 12 μm, a biaxially stretched polyamide film with a thickness of 15 μm, and an aluminum foil with a thickness of 9 μm are bonded to each other via a two-component curable urethane adhesive layer and heat sealed. As a layer, an unstretched polypropylene film for high retort having a thickness of 60 μm was laminated through a two-component curable urethane adhesive layer. Thus, from biaxially stretched polyethylene terephthalate film (12 μm) / adhesive layer / biaxially stretched polyamide film (15 μm) / adhesive layer / aluminum foil (9 μm) / adhesive layer / unstretched polypropylene film (60 μm) A laminated film A having a width of 580 mm was produced.

(Production Example 2)
After a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm and a biaxially stretched polyamide film having a thickness of 15 μm are bonded via a two-component curable urethane adhesive layer, A liquid curable urethane-based anchor agent layer was applied, and then a heat seal layer was laminated from a linear low density polyethylene film having a thickness of 60 μm via a molten polyethylene resin layer having a thickness of 15 μm. Thus, a width of 580 mm made of biaxially stretched polyethylene terephthalate film (12 μm) / adhesive layer / biaxially stretched polyamide film (15 μm) / polyethylene resin layer (15 μm) / linear low density polyethylene film (60 μm). A laminated film B was produced.

(Production Example 3)
A heat-seal layer was laminated on a biaxially stretched polyamide film having a thickness of 15 μm through a two-component curable urethane adhesive layer and a linear low density polyethylene film having a thickness of 60 μm. Thus, a comparative laminated film having a width of 580 mm made of a biaxially stretched polyamide film (15 μm) / adhesive layer / linear low density polyethylene film (60 μm) was produced.

(Production Example 4)
As shown in FIG. 16, both ends in the longitudinal direction of the iron plate for heat seal bar having a length of 610 mm and a width of 50 mm are scraped off by 60 mm to form a heat seal portion of 490 mm × 50 mm in the central portion, and 185 mm from both ends in the longitudinal direction. In the center of the two places, an unsealed portion was formed by cutting into a ring shape having an outer diameter of 25 mm and an inner diameter of 10 mm, and a vertical heat seal bar was manufactured. The vertical seal bar, a 20 mm wide horizontal seal bar, and a punching blade having a diameter of 21 mm were set in a three-side sealed bag making machine and used for manufacturing a bag according to an example of the present invention.

(Example 1)
The laminated film A produced in Production Example 1 was set in the three-side sealed bag making machine, and the unstretched polypropylene film surfaces were laminated facing each other after half-cutting.

  The vertical seal part is subjected to a vertical seal with a width of 50 mm at a temperature of 190 ° C. using the vertical heat seal bar manufactured in Production Example 4 at the end of the half-cut side, and a horizontal heat seal bar with a width of 20 mm is applied to the horizontal seal part. The horizontal seal was applied at a temperature of 220 ° C. so that the unsealed portion of the vertical heat seal bar was positioned at the center of the 240 mm interval at intervals of 240 mm. After the vertical heat sealing and the horizontal heat sealing, cooling was performed with a cooling bar.

  After cooling, the center inside the unsealed part of the vertical seal part is extracted to a diameter of 21 mm using a cutting blade, both ends in the longitudinal direction are trimmed, cut at a substantially central part of the horizontal seal part, length 280 mm, width 240 mm, A bag body with a through hole for a handle having a side seal width of 10 mm, a top seal width of 50 mm, and a bottom seal portion in an unsealed state was obtained.

Similarly, the laminated film B produced in Production Example 2 was used in place of the laminated film A in Production Example 1, and a bag with through holes for grips was obtained in the same manner as described above.
Regardless of the type of laminated film used, the bag has a through hole for a handle having a diameter of 21 mm formed at the center of the through hole seal portion, and an unsealed portion having a width of 2 mm formed at the periphery of the through hole for the handle. It was.

  In addition, the bag according to this example was manufactured in 3000 bags for both the laminated film A and the laminated film B. However, the punched pieces having a diameter of 21 mm were all removed by suction with a suction device attached to the punching part of the bag making machine. It was not scattered on the bag making machine or attached to the bag body and discharged.

(Production Example 5)
A point where two ring-shaped point seal bars with an outer diameter of 35 mm and an inner diameter of 26 mm are produced, and the chuck ends at the time of manufacturing the bag body with a chuck located between the vertical seal and the horizontal seal of the three-side seal bag making machine. The seal portions were set at 240 mm intervals at adjacent positions in the flow direction.

(Example 2)
The laminated film B was set in the three-side sealed bag making machine, and after half-cutting, the unstretched polypropylene film surfaces were laminated face to face.

  The vertical seal part is subjected to a vertical seal with a width of 50 mm at a temperature of 180 ° C. using the vertical heat seal bar manufactured in Production Example 4 at the end on the half-cut side, and then manufactured on the outside of the non-sealed part of the vertical heat seal part. Point sealing was performed using the point seal bar manufactured in Example 5. In the point seal, the heat seal temperature was adjusted to 210 ° C. so that a resin pool was formed after the point seal. Next, the horizontal seal portion was subjected to horizontal seal at a temperature of 210 ° C. using a horizontal heat seal bar having a width of 20 mm at intervals of 240 mm so that the unsealed portion of the vertical heat seal bar was positioned at the center of the interval of 240 mm. . After the vertical heat sealing and the horizontal heat sealing, cooling was performed with a cooling bar. In addition, since the point seal part was dented from the surroundings and the cooling plate did not hit well and a cooling effect could not be obtained, only the cool air of the dryer was applied immediately after the point seal, and cooling by the cooling bar was not performed.

  After cooling, the center inside the unsealed part of the vertical seal part is extracted to a diameter of 21 mm using a cutting blade, both ends in the longitudinal direction are trimmed, cut at a substantially central part of the horizontal seal part, length 280 mm, width 240 mm, A bag body with a through hole for a handle having a side seal width of 10 mm, a top seal width of 50 mm, and a bottom seal portion in an unsealed state was obtained.

In the same manner, the laminated film A produced in Production Example 1 was used in place of the laminated film B in Production Example 2, and a bag body with through holes for grips was obtained in the same manner as described above.
Regardless of the type of laminated film used, the bag is formed with a through hole for a handle having a diameter of 21 mm at the center of the through hole seal portion, and an unsealed portion having a width of 2 mm is formed at the periphery of the through hole for the handle. A resin reservoir was formed between the point seal portion and the unsealed portion.

  In addition, the bag according to this example was manufactured in 3000 bags for both the laminated film A and the laminated film B. However, the punched pieces having a diameter of 21 mm were all removed by suction with a suction device attached to the punching part of the bag making machine. It was not scattered on the bag making machine or attached to the bag body and discharged.

(Production Example 6)
In the same manner as in Production Example 4, a heat sealing bar iron plate having a length of 610 mm and a width of 50 mm was scraped off at both ends in the longitudinal direction by 60 mm to form a 490 mm × 50 mm heat sealing portion at the center. Next, at two centers of 185 mm from both ends in the longitudinal direction, a circle with an outer diameter of 25 mm was cut out to form an unsealed portion, and a vertical heat seal bar was manufactured.

Example 3
A bag with a through hole for a handle made of laminated film A or laminated film B, respectively, as in Example 1, except that the vertical heat seal bar of Production Example 6 was used instead of the vertical heat seal bar of Production Example 4. Manufactured.

  Regardless of the type of laminated film used, the bag has a through hole for a handle having a diameter of 21 mm formed at the center of the through hole seal portion, and an unsealed portion having a width of 2 mm formed at the periphery of the through hole for the handle. It was.

  However, after the bag making, around the punching part of the bag making machine, two punches of the laminated film B that could not be removed by suction with the suction device attached to the punching part of the bag making machine were dropped and manufactured. Although it did not adhere to the bag body and mixed into the bundle of bag bodies, the possibility was suggested and the usefulness of the present invention was shown.

(Comparative Example 1)
Instead of the vertical heat seal bar of Production Example 4, a full solid heat seal bar having a length of 610 mm and a width of 50 mm is used, and the laminated film A of Production Example 1, the laminated film B of Production Example 2, and Production Example 3 are used as laminated films. A bag body with a through hole for a handle was produced in the same manner as in Example 1 except that the comparative laminated film was used.

  Regardless of the type of laminated film used, the bag was formed with a through hole for a handle having a diameter of 21 mm in the center of the through hole seal portion, and there was no unsealed portion at the periphery of the through hole for the handle.

(Sensory test)
A bag body with a through-hole for a handle including the laminated film A, the laminated film B, and the comparative laminated film produced in Examples 1 and 2 and Comparative Example 1 was filled with 500 ml and 1 l of two patterns of water. Next, after heat-sealing and sealing the opening, the bag body is hung through the handle through-hole of the through-hole seal portion, and the sense of feeling given to the fingers by five women in their twenties to thirties The test results were evaluated. The results are shown in Table 1.

  In the table, ○ indicates that there is no pain as a sensation to the finger, △ indicates pain but can be tolerated, × indicates pain that cannot be tolerated. It was. In addition, when the amount of water increases, in addition to the sensation of pain, you will feel the weight that cannot be supported by one finger, but you will record the sensation after lifting the bag after lifting even at the moment, and the pain will not be amplified In this way, it was instructed not to lift using the same part of the same finger as the other sections in different sections.

  As is clear from the evaluation results shown in Table 1, in the case of 500 ml of water, in the through-hole bag body for a handle of Example 1 and 2, the finger hardly hurts, whereas the laminated film A of Comparative Example 1 In B and B, I already felt a slight pain. Further, when water became 1 liter, there was an example in which the laminated film A and B of Comparative Example 2 could not lift the bag because the finger hurt. In 1 and 2, all were within the limits that could be tolerated, regardless of the difference in pain.

  In addition, in the case of the bag of Comparative Example 2 manufactured with the comparative film, the laminated film has a low waist, so that the cut surface of the through hole for the handle does not hit the finger vertically, and the effect of the present invention is necessary. There wasn't.

  INDUSTRIAL APPLICABILITY The present invention is useful because it can reduce finger tenderness during use when the finger is passed through the handle through-hole.

FIG. 1A shows a bag body with a through-hole for a handle according to the present invention in which the outer periphery of the bag body (10) is heat-sealed and a through-hole for a handle (20) is provided in the heat-sealed portion (40). It is a top view. An unsealed portion (30) is formed on the periphery of the handle through-hole (20). Moreover, FIG.1 (b) is the elements on larger scale of Fig.1 (a). FIG. 2 is an A-A ′ cut surface of FIG. FIG. 3 shows a grip through hole (20) and a finger (60) when a finger (60) is inserted into a conventional handle through hole (20) having no unsealed portion and the bag (10) is lifted. It is a partial expanded cross-section schematic diagram which shows the relationship with). FIG. 4 shows two laminated films constituting the unsealed portion (30) and the unsealed portion (30) when the bag is lifted by inserting the finger (60) into the handle through-hole (20). It is a figure which shows a state. It is sectional drawing of the heat seal part in which the through-hole for handles (20) was formed, and is a figure which shows the aspect by which the resin pool (89) is formed in the fusion | melting edge part of a heat seal layer and a heat seal layer. FIG. 6 shows that a finger (60) is inserted into a through-hole (20) for a handle in which a high-pressure seal portion (43) is formed at the outer peripheral end of an unsealed portion (30) provided on the outer periphery of the through-hole for handle (20). And it is a figure which shows the state of the unsealed part (30) at the time of lifting a bag. In FIG. 7, a circular handle through-hole (20) is formed at the overlapping portion of the top seal portion and the lateral seal portion, and an unsealed portion (30) is formed in substantially half of the periphery of the handle through-hole (20). It is a top view of the bag body (10) with the through-hole for handles of this invention which was formed and the extraction tool (50) was provided in the diagonal of the said through-hole for handles (20). A high-pressure seal portion (43) is formed at the outer peripheral end of the unsealed portion (30). FIG. 8 is a plan view of a bag body (10) with a through hole for a handle according to the present invention in which a hanging hole (53) is formed together with a through hole (20) for a handle with an unsealed portion (30). A through-hole (20) for a handle and a suspension hole (53) are formed in the top seal portion, and a pouring tool (50) is formed in the bottom seal portion. FIG. 9 shows a bag body (10) provided with an openable / closable chuck (55) under the top seal portion, and one of two laminated films forming the bag body on the chuck (55). An opening portion (56) formed by forming a notch in the sheet is provided, a circular through hole (20) for a circular handle is formed in both side seal portions, and a pouring tool (50) is formed in the bottom seal portion, and the top seal portion It is a top view of the bag body (10) with the through-hole for handles of this invention in which the hole (53) for suspension is formed in. In one embodiment of the pouring tool (50) and the bag body (10) with a through hole for a handle according to the present invention, a through hole (20) for the handle is provided in the bottom material portion of the standing pouch, and the pouring tool is provided at the opposite corner. It is a figure which shows the aspect provided with (50). FIG. 11A is a diagram illustrating a manufacturing process of the handle through-hole (20) having an unsealed portion in the heat-sealed portion, the handle through-hole (20) formation position (23) is indicated by a broken line, and a solid line The outside (25) and the inside (27) are shown. FIG. 11B shows a state after the handle through-hole (20) is removed. FIG. 12A is a cross-shaped heat seal portion inside the pull-out position (23) of the handle through-hole, and a circular shape (25) outside the pull-out position (23) connected to the ten o'clock heat seal portion. It is explanatory drawing of the heat seal which forms the heat seal part. FIG. 12B shows a state after the handle through-hole (20) is removed. FIG. 13 (a) shows an embodiment in which the inside of a semicircle centering on the center of the circular handle through hole is an unsealed portion (30), and FIG. 13 (b) shows the handle through hole (20). The state after unplugging is shown. FIG. 14A is a view for explaining an aspect in which a high-pressure seal portion (43) is formed in a predetermined range on the outside (25) of FIG. 11A, and FIG. 20) after unplugging. FIG. 15 is a cut surface taken along the line X-X ′ of FIG. It is a schematic drawing of the vertical heat seal bar used in Example 1 concerning the present invention.

Explanation of symbols

10: Bag body with through-hole for handle,
20 ... through hole for handle,
23 .. extraction position,
25 ... outside the through hole for the handle,
27 ... Inside the through hole for the handle,
30 ... unsealed part,
40 ... heat seal part,
43 ... high pressure seal part,
50 ... pour tool,
60 ... finger,
80 ... laminated film,
81 ... stretched film,
83 ... adhesive layer,
85 ... stretched film,
87 ... heat seal layer,
89 ... Resin reservoir

Claims (6)

In the bag body in which the heat seal layer of the laminated film whose innermost layer is a heat seal layer is overlapped facing each other, the outer periphery is heat sealed and formed into a bag shape, and a handle through hole is provided in the heat seal portion. There,
The laminated film is a laminated film in which a heat seal layer is formed on the innermost side of a base film including a layer obtained by laminating at least two stretched films,
A bag body with a through hole for a handle, wherein the through hole for the handle has an unsealed portion formed at least at a part of its peripheral edge.   The bag body with a through-hole for a handle according to claim 1, wherein a resin pool is provided in a fused portion of the heat seal layer at an end portion of the unsealed portion.   A pouch with a through hole for a handle, wherein a pouring tool is further attached to the bag with a through hole for a handle according to claim 1.   A package with a through-hole for a handle, wherein an infusion solution, blood, or enteral nutrient is stored in the bag with a through-hole for a handle according to claim 1. The outer periphery is heat-sealed and formed into a bag shape, and the manufacturing method of the bag body provided with a through-hole for a handle on the outer peripheral portion,
A laminated film in which a heat seal layer is formed on the innermost side of a base film including a layer in which at least two stretched films are laminated, and the heat seal layer is opposed to each other;
It is the outer periphery of the overlapping portion, and heat seals the outside and inside of the formation position of the through hole for the handle,
Next, a handle through hole is formed at the outer periphery forming position of the handle through hole.   Furthermore, it includes a step of forming a high-pressure heat-sealed portion that heat-seals at a higher pressure than the others in a predetermined range of the heat-sealed portion outside the grip through-hole forming position at the time of heat sealing. The manufacturing method of the bag body with a through-hole for handles of Claim 5.

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