JP6422064B2 - A laminated film for packaging, a packaging bag formed from the laminated film for packaging, and a method for producing the laminated film for packaging. - Google Patents

Description

Packaging bags for selling products are required to have various performances and functions, but in terms of performance, there are sealing properties for protecting the contents, bag-breaking resistance, shape retention, and the like. Further, there are a barrier property and a light shielding property for preventing deterioration. On the other hand, the convenience of the consumer regarding use, storage, etc. after purchase includes opening of the contents to be taken out, storage after opening, storage and resealability, and taking out of the contents. The present invention improves a method for imparting unsealing of packaging bags, a method for imparting ease of taking out contents, and a method for imparting resealability that facilitates storage after opening to enhance convenience for consumers. The present invention relates to a laminated film for packaging, a packaging bag formed from the laminated film for packaging, and a method for producing the laminated film for packaging .

  The method for opening a packaging bag made of a laminated film is generally to break the vicinity of the seal part at the time of filling, cut with scissors, pull the seal part from the seal part, etc. The method is devised. There are also flexible packaging products whose openability is improved by a method of perforating the laminated soft packaging material with a die cutter or the like, and a method of providing perforations or grooves with a laser beam. However, the method is for facilitating opening including the sealing portion of the packaging bag, and it is a packaging bag that cannot be resealed once opened.

Some packaged products such as wet tissue use a method of attaching a sealing seal provided with an outlet and an adhesive. The manufacturing method of this packaged product is such that a sealing seal provided with a pressure-sensitive adhesive on the packaging laminated film is pasted on the outer surface of the packaging laminated film and then packaged in the shape of the outlet from the back of the packaging laminated film. By taking a cutting blade up to the pressure-sensitive adhesive layer in the laminated film, a cut-out outlet portion is formed.

Therefore, part of the packaging material at the outlet, which has been separated from the packaging material in advance, is attached to the adhesive of the sealing seal, so there is no feeling of breaking the outlet when opened, and there is no perfect sealing or virginity It becomes.

As consumers' needs, packaging bags are easy to open, take out, reseal, and preserve their contents in terms of ease of use of packaging bags. It has become a major theme for people involved in packaging bags formed from films or laminated films for packaging.

JP-A-7-285559 JP 2001-287767 A JP 2002-255199 A JP 2005-162303 A JP2010-30691A JP, 2006-155582, A

  The method of opening the packaging bag does not open from the heat-sealed part, but a non-sealed part is provided with a perforation or groove having a substantially circular or substantially rectangular shape, and the part is opened to serve as a content outlet. The first problem is how to open the bag with improved convenience, and a seal sticker is attached to the surrounding area including the perforation or groove to be the outlet of the packaging bag. After forming the outlet and taking out the contents, the second challenge is to attach a sealing seal to the packaging bag to make it a resealable and protective packaging. It is an object to stably supply a laminated film for packaging satisfying the requirements or a packaging bag formed of the laminated film for packaging at low cost. (In the claims and the description of the specification, “packaging bag” refers to a packed product that has been filled, and “laminated film for packaging” refers to a sheet-like laminated film used for the packaged product and its contents. (It refers to the bag-making product before it is done.)

In the packaging bag of the present invention, a pattern is printed on a substrate film on a surface layer, and the substrate film penetrates a perforation or substrate film having a substantially circular or substantially rectangular shape corresponding to the pattern. Grooves or perforations having a shape that is bisected at the center of the substantially circular shape or the substantially square shape or a groove that penetrates the base film is provided, and at least a sealant layer is laminated on the printing surface side of the base film, The perforation or groove is provided in the non-sealed portion, and the perforation or groove becomes an outlet when opened.

Further, in the above packaging bag, the bag shape is a pillow packaging bag, and the outlet corresponding to the pattern of the non-sealed portion of the pillow packaging bag is provided, or the bag shape is a stand pack packaging bag. The take-out port corresponding to the pattern of the non-seal part of the stand pack packaging bag is provided.

In the laminated film for packaging used in the packaging bag of the present invention, a pattern is printed on the base film of the surface layer, and the base film has a perforation having a substantially circular or substantially rectangular shape corresponding to the pattern, or A perforation having a shape that is bisected at the center of the substantially circular or substantially quadrangular shape is provided, and at least a sealant layer is laminated on the printing surface side of the base film, and the perforation is provided on a non-sealed portion. In the case of the packaging bag, the perforated portion becomes an outlet when opened.

The manufacturing method of the packaging laminated film in which the perforation corresponding to the pattern of the base film of the present invention is provided and the pattern is printed is a method having the following characteristics.

In the method for producing a laminated film for packaging according to the present invention, a pattern is printed with a gravure printing machine on the base film forming one layer of the laminated film for packaging, and a perforation cutting blade is applied in a subsequent unit. After laminating at least a sealant layer after forming a perforation that forms a perforation by aligning the pattern with the die cutter roll and an anvil roll provided with a self-adhesive layer on the outer periphery, or of the laminated film for packaging Print a pattern with a gravure printing machine on a single-layer base film, and after laminating at least a sealant layer, align it with the pattern of the laminated film for packaging and use it as a take-out through the base film by laser processing A groove is formed.

The method of providing an opening in an arbitrary shape according to the present invention is a gravure process that uses a gravure printing machine proposed by the present inventor in Japanese Patent Application No. 2017-46167 to print a pattern and process perforations that facilitate opening. Details on what to do in print inline .

In the packaging bag formed of the laminated film for packaging of the present invention, the base film forming one layer of the laminated film for packaging is printed with a pattern by a gravure printing machine, and then the pattern of the base film is applied. The perforation is applied to the non-sealable portion of the base sheet by a die cutter having a substantially circular or substantially quadrangular cutting edge and an anvil roll provided with a self-adhesive layer on the outer periphery. If the sealant layer is provided at least on the printing surface side of the base film and the perforated portion is opened, the outlet can be formed.

  The laminated film for packaging having the perforation of the present invention does not need to perform pattern printing and perforation processing in a gravure printing inline using a gravure printing machine, and may perform perforation processing offline. The substrate film used for printing is a thin film of about 12 to 40 μm, and it is difficult to manage the distance between the die cutter blade edge and the anvil roll (clearance to prevent contact between the die cutter blade edge and the anvil roll) A stable perforation can be formed by providing a self-adhesive layer composed of one or two layers from 0,2 mm to 0,6 mm on the outer periphery of the anvil roll. Alternatively, the perforation may be performed off-line in a substantially circular or substantially quadrangular shape using an apparatus capable of pressing the gravure plate described above and a nip impression cylinder provided with a self-adhesive layer on the outer periphery. The self-adhesive layer is as described in Japanese Patent Application No. 2017-46167.

The laminated film for packaging of the present invention or the packaging bag formed from the laminated film for packaging has an intermediate layer including an aluminum foil or an aluminum vapor-deposited layer and a sealant layer, and further a surface layer constituting one layer of the laminated film for packaging A non-sealed portion of the base film is provided with a groove or perforation that penetrates the base film into a shape such as a substantially circular shape or a substantially square shape by laser processing, and the groove or perforation portion is opened. Can be used as the outlet .

  As described above, the packaging laminated film of the present invention or the packaging bag formed with the packaging laminated film not only facilitates breakage by providing a penetration portion with a perforated blade in the substrate film, but also the substrate film. As a method of removing all or a part of the film layer or resin layer adjacent to each other, perforations or grooves can be formed by laser processing. In addition, as a laminated film for packaging that performs laser processing, an aluminum foil or an aluminum deposited layer has an intermediate layer to reflect light, and in aluminum foil, heat can be diffused to obtain a stable groove depth. it can. Therefore, in the packaging bag of the present invention, an aluminum foil or an aluminum vapor deposition layer may be provided in the intermediate layer in order to provide grooves or perforations in a wide range in the non-sealed portion.

  The packaging bag of the present invention has a printed film and a perforated through-hole or groove provided on the base film, and is a laminated film for packaging by laminating at least a sealant layer on the pattern surface side, and heat-sealing the sealant layer It is molded with properties.

  In filling the contents, the packing film is filled in a three-sided bag, pillow bag, etc. in the bag making process in advance, or the packing bag is used with a packing machine using a rolled-up packaging laminated film. What is necessary is just to make it a packaging bag, filling it into a three-sided bag or the like.

The base film is printed, and further, a non-sealed region is provided with a perforated fracture line in a substantially circular or substantially quadrangular shape, and at least a sealant layer is provided on the printed surface side, or the base material The film is printed, and a non-sealed region of the film in which the intermediate layer including the aluminum foil or the aluminum vapor deposition layer and the sealant layer are laminated is provided with a perforated break line portion having a substantially circular or substantially quadrangular shape. In addition, a sealing seal or a reinforcing plate seal, or both a reinforcing plate seal and a sealing seal may be attached to a surrounding region including the perforation in a packaging laminate sheet or a packaging bag formed from the packaging laminate sheet. it can.

  Further, in order to obtain a packaging bag in which a seal seal or a reinforcing plate seal or both a reinforcing plate seal and a sealing seal are attached to a peripheral region including the perforation, a sealing seal or a reinforcing plate seal is previously applied to the laminated film for packaging. May be affixed, and a device for affixing these seals to a filling machine such as a pillow bag may be provided.

  In FIG. 1, the external appearance conceptual diagram of the pillow packaging bag (2) which provided the elliptical perforation (1) is shown. The broken line of the ellipse shown in FIG. 1 is a portion to be broken (perforated portion), which is a portion to be the content outlet (3). 3) can be made.

  FIG. 2 shows a conceptual diagram of the appearance in which the outlet (3) is opened and the contents (4) are visible. In conventional general pillow packaging products, the front and back in the vicinity of the seal portion are pulled open, or the packaging bag is torn from a notch provided in the seal portion, and an outlet is provided. In such a method, the unsealed portion has an irregular shape, so that the user feels inconvenience in taking out the contents and storing the remaining contents.

  In FIG. 2, the contents (4) do not pop out even if the pillow packaging bag (2) is shaken, and the crushed powder of the contents does not come out, and the contents can be easily removed from the outlet (3). It can be taken out.

  In FIG. 3, the external appearance conceptual diagram which stuck the sealing seal (5) which does not provide a one part adhesive at the extraction opening (3) is shown. By doing in this way, if it pulls with the adhesive non-application part (6) and pillow packaging bag (2) of a sealing seal (5), it can open a take-out opening (3) along a fracture line part. it can. Furthermore, if the sealing seal (5) is provided with a stop cut (7), the sealing seal (5) can be used as a reseal material. This point will be described in detail later.

  FIG. 4 is a conceptual diagram showing another appearance of a pillow package product provided with perforations. The pillow packaging bag (2) provided with a perforated line in the figure-shaped broken line (8) shown in FIG. 1 is a portion that becomes an outlet (3) of the contents (4), and is shown in the central portion of the bag. A large outlet (3) can be formed by holding the two knobs (9) and removing the laminated film along the line to be broken (perforated line).

FIG. 5 shows a conceptual diagram of the appearance in which the outlet (3) is opened and the contents (4) are visible. When a large number of people should eat one bag, there is an advantage that the contents can be easily taken without putting it into a container.
Thus, the shape of the outlet can be arbitrarily selected depending on the contents and the method of use.

  FIG. 6: shows the external appearance conceptual diagram of the pillow packaging bag (2) which provided the reinforcement board seal | sticker (11) in the outlet (3). By providing a reinforcing plate seal (11) around the outlet (3), the perforation (1) can be easily opened, and the shape retention of the outlet (3) can be improved to further enhance the contents. There is an advantage that it can be easily taken out.

The packaging bag of the present invention has two features. One point includes a base film or a base film with a perforation or groove to be an outlet, and a sealant film or the like is bonded thereto. A sealing seal is affixed to the surrounding area including the point where the packaging bag has a sealing property and the perforation or groove processed as the outlet, and the outlet is opened by rolling the sealing seal. The outlet can be closed by opening and resealing.

  Thus, it was able to be set as the highly convenient packaging bag provided with openability and resealability. The present invention will be described with reference to the drawings.

  FIG. 7 is an external conceptual view showing an example of a sealing seal. The sealing seal (5) consists of an adhesive non-coated part (6) as a handle part and an adhesive coated part (10) for sealing and resealing. A stop cut (7) is provided to prevent this.

  FIG. 8 is an external conceptual view in which a sealing seal (5) is attached as a pillow packaging bag (2) using the packaging laminated film of the present invention. The shape of the take-out port (3) is an example in which a small convex semicircle is provided to improve the opening property and the shape is larger.

  Next, FIG. 9 is provided with a reinforcing plate seal (11) that reinforces the waist of the laminated film for packaging, further provided with a sealing seal (5) on the reinforcing plate seal, and affixed to the outlet (3). It is an external appearance conceptual diagram made into the laminated film waist reinforcement and sealing seal (12) to do.

  FIG. 10 is an external conceptual view in which a laminated laminated film waist reinforcement and sealing seal (12) is attached to a packaging bag in a stand pack form (13) with an outlet (3).

In this way, regardless of the shape of the packaging bag, a sealing laminated film in which a sealant film or the like is bonded to a base film processed with gravure printing and a perforation to be taken out is used. In addition, by using a packaging laminated film in which laser processing is applied to the packaging laminated film, a packaging bag having virginity, unsealing properties, ease of taking out contents, and resealability can be obtained.

  Since the packaging bag of the present invention can be provided with a certain outlet in the non-sealed portion of the packaging bag filled with the contents, it may be considered that the packaging bag is changed into a container by opening the outlet. . In addition, by providing a sealing seal at the outlet, the sealing seal portion became a container lid, and the packaging bag could be made close to a container with a lid.

  As for the contents, solids are suitable for the use of the packaging bag of the present invention. However, depending on the method of using the packaging bag, it can be used for liquids and viscous materials.

In this way, in the laminated film for packaging in which a pattern is printed on the substrate film on the surface layer, the substrate film has a substantially circular or substantially rectangular perforation corresponding to the pattern or the substantially circular shape. Alternatively, a perforation having a shape bisected at the center of the substantially rectangular shape is provided, and at least a sealant layer is laminated on the printing surface side of the base film, and an opening is obtained when the perforation portion is opened. The laminated film for packaging of the present invention is printed on a base film that forms one layer of the laminated film for packaging with a gravure printing machine, and in the subsequent printing unit, in register with the design of the base film, A perforation that forms a substantially circular or substantially quadrilateral outlet by press-contacting with a die cutter roll with a perforated cutting edge and an anvil roll provided with a self-adhesive layer on the outer periphery, or A perforated film is formed at the center of the perforated line to form a perforated outlet, and then a laminate film for packaging is produced by laminating at least a sealant layer on the printing surface side of the base film. It can be a method.

Using a laminated film for packaging provided with an outlet for taking out the contents of the present invention, as a pillow packaging bag or a stand pack packaging bag, it can be an arbitrary outlet depending on the contents, the virginity of the packaging bag, It was possible to obtain a packaging bag with a new method for opening the package and taking out the contents.

External view of pillow packaging bag with oval perforation Fig. 1 is a conceptual diagram of the external appearance when the contents are visible after opening the outlet Fig. 1 is a conceptual diagram of the appearance with a sealing seal that is not partly provided with an adhesive. Another appearance concept diagram of pillow packaging products with perforations Fig. 4 is a conceptual view of the appearance when the outlet is opened and the contents are visible External view of pillow packaging bag with reinforcing plate seal at the outlet External appearance conceptual diagram showing an example of sealing seal Appearance conceptual diagram with sealing seal attached to pillow packaging bag External view of laminated film waist reinforcement and sealing seal for packaging External view of the stand-pack type packaging bag with an outlet Material composition diagram of Example 1 Material composition diagram of Example 2 Material composition diagram of Example 3 Material composition diagram of Example 4 Material composition diagram of Example 5 Material composition diagram of Example 6

  The pattern printing (21) was performed on the polyester film 12μ (20), and the perforated line (1) was processed after being conveyed to the reversing device. A butadiene-based AC agent (22) is applied to the printed film, and aluminum foil 7 μ (23) is bonded by extrusion of polyethylene 15 μ (24). Further, a butadiene-based AC agent (22) is applied to the aluminum surface, and polyethylene 20 μ ( 25) Extruded to obtain a laminated film for packaging. FIG. 11 shows a material configuration diagram.

A chocolate confectionery was packaged in the form shown in FIG. 1 using the produced laminated film for packaging. By picking and pulling the perforated part and the seal part, the outlet could be opened along the line to be broken (perforated part).

  Pattern printing (21), isocyanate AC agent (27) application, and perforation (1) processing were performed on a polypropylene 20μ film (26). The printed film and the vapor-deposited surface of the aluminum-deposited unstretched polyethylene film 25 μ (28) were extruded with EMAA 20 μ (29) to obtain a laminated film for packaging. FIG. 12 shows a material configuration diagram.

  Snack confectionery was packaged in the form of FIG. 4 using the prepared laminated film for packaging. After opening a part of the perforated processed portion with the center knob, it was easily broken along the line to be broken (perforated portion) and opened as shown in FIG.

  In place of the aluminum-deposited polyethylene film (28), an aluminum-deposited unstretched polypropylene 20μ film was used. However, the perforated shape of Example 2 had no problem with the unsealing properties.

  The pattern printing (21) was performed on the polyester film 16μ (30) and conveyed to the reversing device, and then the perforation (1) was processed. Adhesive (31) is applied to the printed film and bonded to aluminum foil 7μ (23) by dry lamination. Further, adhesive (31) is applied and bonded to polyethylene film 25μ (32) by dry lamination, and laminated for packaging. A film was obtained. FIG. 13 shows a material configuration diagram.

The cube-shaped consomme soup was packaged in the form shown in FIG. Holding and pulling the seal portion and the pick portion of the seal seal, it was easily broken along the line to be broken (perforated portion), and the outlet opening could be opened. Moreover, after taking out the contents, it was able to be resealed with a seal seal.

  A laminated film was prepared by laminating a silica-deposited polyester film 12 μ (33) silica surface and a polypropylene film 20 μ (26) by dry lamination using an adhesive (31). After pattern printing was performed on the polypropylene film surface of the laminated film, it was conveyed to a reversing device and perforated (1) from the silica-deposited polyester film 12 μ (33). Next, an isocyanate-based AC agent (27) was applied to the laminated film and extruded with 30 μ (34) of a polyethylene film to obtain a laminated film for packaging. FIG. 14 shows a material configuration diagram.

In this example, the perforation did not completely penetrate the laminated film, and the silica-deposited polyester film 12μ completely penetrated. It was not reached.

With the produced packaging laminated film, commercial butter which is a viscous product was packaged in the form of FIG. After opening a part of the perforated processed portion with the center knob, it was easily broken along the line to be broken (perforated portion) and opened as shown in FIG.

  Similarly to Example 5, the silica surface of the silica vapor-deposited polyester film 12 μ (33) and the polypropylene film 20 μ (26) were bonded together by dry lamination using an adhesive (31) to prepare a laminated film. After pattern printing was performed on the polypropylene film surface of the laminated film, it was conveyed to a reversing device and perforated (1) from the silica-deposited polyester film 12 μ (33).

Next, an adhesive (31) was applied to the printing surface of the laminated film, and a laminated film for packaging was produced by dry lamination with a vapor-deposited surface of aluminum vapor-deposited polyethylene film 30μ (35). FIG. 15 shows a material configuration diagram.

Also in this example, as in Example 5, the perforation did not completely penetrate the laminated film and the silica-deposited polyester film 12μ completely penetrated, but the polypropylene film 20μ has no perforation scratches. Although it was observable, it did not penetrate.

Chocolate confectionery was packaged in the form of FIG. 10 with the produced laminated film. Holding and pulling the seal portion and the pick portion of the seal seal, it was easily broken along the line to be broken (perforated portion), and the outlet opening could be opened. After the contents were taken out, they could be resealed with a seal seal.

Printed on a polypropylene 20μ film (26) (21), extruded with polyethylene 20μ (25), bonded to the glossy surface of aluminum foil 7μ (23), and further polyethylene 25μ (36) on the back surface of the aluminum foil erased surface A laminated film for extrusion packaging with a thickness of was prepared. As the AC agent, a butadiene-based AC agent (22) was used. The laminated film for packaging was provided with a groove (37) by laser processing to form an elliptical outlet. The groove penetrated the polypropylene 20μ film (26) and reached about 10μ of the polyethylene 20μ (25) extruded layer. FIG. 16 shows a material configuration diagram.

After sticking a seal seal on the produced laminated film for packaging, chocolate confectionery was packaged in the form of FIG. When holding and pulling the seal portion and the knob portion of the seal seal, it was easily broken along the line to be broken (groove portion) and the outlet could be opened. After the contents were taken out, they could be resealed with a seal seal.

1 perforation (scheduled break line)
2 Pillow packaging bag 3 Outlet 4 Contents 5 Sealing seal 6 Adhesive non-application part 7 Stop notch 8 Dotted broken line 9 Knob part 10 Adhesive coating part 11 Reinforcement plate seal 12 Laminated film waist reinforcement for packaging And sealing seal 13 Stand pack form 20 Polyester 12μ film 21 Picture printing 22 Butadiene type AC agent 23 Aluminum foil 7μ
24 Polyethylene 15μ
25 Polyethylene 20μ
26 Polypropylene 20μ film 27 Isocyanate-based AC agent 28 Aluminum evaporated unstretched polyethylene film 25μ
29 EMAA 20μ
30 Polyester 16μ film 31 Adhesive
32 Polyethylene film 25μ
33 Silica-deposited polyester film 12μ
34 Polyethylene film 30μ
35 Aluminum evaporated polyethylene film 30μ
36 Polyethylene 25μ
37 Laser processing groove (scheduled fracture line)

Claims (4)

A pattern is printed on the substrate film of the surface layer, and the substrate film has a substantially circular or substantially rectangular perforation corresponding to the pattern or a groove penetrating the substrate film or the substantially circular or the A perforation having a shape that is bisected by a substantially rectangular central portion or a groove that penetrates the base film is provided, and at least a sealant layer is laminated on the printing surface side of the base film, and the perforation is formed on the non-sealed portion. Or a groove part is provided, and this perforation or a groove part becomes an outlet by opening, The packaging bag characterized by the above-mentioned. The packaging bag according to claim 1, wherein the bag shape is a pillow packaging bag, and the outlet corresponding to the pattern of the non-sealed portion of the pillow packaging bag is provided, or the bag shape is a stand pack packaging bag. The packaging bag is characterized in that the outlet corresponding to the pattern of the non-seal portion of the stand pack packaging bag is provided. A laminated film for packaging used in the packaging bag according to claim 1. 4. The method for producing a laminated film for packaging according to claim 3, wherein a pattern is printed on a base film forming one layer of the laminated film for packaging by a gravure printing machine, and a perforation cutting blade is applied in a subsequent unit. After the perforated die cutter roll and the self-adhesive layer are pressed with an anvil roll provided on the outer periphery to form a perforation to register with the pattern and form a perforation, at least a sealant layer is laminated, or the packaging laminate Print the pattern on the base film that forms one layer of the film with a gravure printer, and after laminating at least the sealant layer, align the pattern with the pattern of the laminated film for packaging and take out the base film by laser processing The manufacturing method of the laminated | multilayer film for packaging characterized by forming the groove | channel which becomes.

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