JPH1059381A - Gusset type packaging bag with fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gusset type packaging bag provided with a fastener in which the bag body can be easily opened and which has a fastener at the opening of the bag to be repeatedly sealed and used and further, which is appropriate for charging and packaging the contents. SOLUTION: Notches are cut from the upper end along the outside folding lines of the outside folding parts, at both outside folding parts 51 to form oppositely arranged front and rear plates. And a fastener 9 constituting a protrusions- recessions fitting is fitted to the inside face of the front and rear plates 7, 8. The front and rear plates are erected and both sides thereof are heat-sealed to provide a side seal part 10. The upper end of the opening is heat-sealed to form the upper end seal part 11. And further, the outside folding parts having no relation with the formation of the side seal part 10, including the upper end part of the side seal part 10, are trimmed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gusset-type packaging bag with a fastener, and more particularly to powdered, granular, and needle-like cocoa, cocoa, black tea, green tea, laver, rice, etc. Or with fasteners suitable for filling and packaging of various articles such as laminar products and foods, snacks, chocolates, candy and other confectionery, detergents, bath additives, chemical products such as photographic preparations, and others. The present invention relates to a gusset-type packaging bag.

[0002]

2. Description of the Related Art Conventionally, various flexible packaging bags have been developed and proposed for filling and packaging various food products. One of them is a so-called gusset type packaging bag. This is a bag having an inner folded portion on both sides and having a large ratio of the inner volume of the package (cm ³ ) / the area of the packaging material (cm ² ), and is used for filling and packaging various foods and other articles. ing. By the way, in recent years, in a flexible packaging bag, after opening and taking out the contents, in order to reclose the opening and use it repeatedly, it is possible to fit unevenly and provide a resealable fastener. A bag has been proposed. In view of this, an attempt was made to attach a fastener that can be fitted into the opening and closing of the gusset-type packaging bag, but the gusset-type packaging bag has an inner folded portion on both sides. It is extremely difficult to fit a fastener having resealability into the portion corresponding to the opening by engaging and recessing. In order to solve this problem, the present inventor has previously proposed a method of manufacturing a gusset-type packaging bag with a fastener and an intermediate thereof as described in JP-A-7-214702. .

[0003]

The above-mentioned JP-A-7-21
A gusset-type packaging bag with a fastener manufactured by the method for manufacturing a gusset-type packaging bag with a fastener described in Japanese Patent No. 4702 is easy to attach a fastener and has resealability through the fastener. It is a very excellent packaging bag that can be used repeatedly and is free from breakage even if the contents are filled and packed in the packaging bag. However, in the above-mentioned gusset-type packaging bag with a fastener, in order to take out the contents from the bag, usually, the upper ends of the front plate and the rear plate to which the fastener is attached are heat-sealed.
To tear open the bag and open the bag.
There is a problem in the opening property at that time, it is difficult for anyone to open easily, and it is necessary to open using scissors, a knife, a cutter or the like. In particular, the backing part is constructed by attaching both sides of the packaging material to the palms, and the side parts provided with fasteners are easy to hold by hand, as the packaging material may be six-fold. There is a problem that it is extremely difficult to tear open. Therefore, the present invention is easy to open the bag, and,
It is an object of the present invention to provide a gusset-type packaging bag with a zipper having a zipper at an opening portion of the bag, which is excellent in resealability, can be used repeatedly, and has suitability for filling and packaging the contents.

[0004]

The inventor of the present invention has conducted various studies on the above-mentioned gusset-type packaging bag with fasteners. As a result, both ends of the packaging material constituting the gusset-type packaging bag are attached to each other with palms. A gusset sleeve is formed by forming a sticking seal portion and forming inward fold portions on both sides thereof, and an upper end seal of one opening portion of the gusset sleeve.
Opening notches are formed symmetrically on the four sides of the both inside folds below the portion corresponding to the part where the fold is formed, and then the inside folds are pulled out to remove the inside folds. Invert the outer folds on both sides, and further engrave cuts in the outer folds from the top along the outer fold line of the outer fold to form opposing front and rear plates Further, fasteners forming concave and convex fittings are attached to the inner surfaces of the front plate and the rear plate, and the opposing front plate and the rear plate are erected to heat seal both sides thereof. To provide a side seal part,
The upper end of the opening is heat-sealed to form an upper seal, and furthermore, the outer fold including the upper end of the side seal is not involved in the formation of the side seal. By trimming the zipper, a gusset-type packaging bag with a zipper was manufactured.When opening the bag, the opening notch was used as an opening starting point, and it was easy and easy to open the bag by hand. A gusset-type packaging bag with a zipper that has a zipper at the opening of the bag, is resealing-rich, can be used repeatedly, and has a suitability for filling and packaging the contents. The present invention has been completed.

That is, according to the present invention, in a gusset-type bag having an inner folded portion on both sides, both ends of a wrapping material constituting the gusset-type bag are stuck together to form a back-sealing seal portion, and A gusset sleeve is formed by forming inner folded portions on both sides of the gusset sleeve.
Opening cutouts are formed symmetrically on the four sides of both inner folds below a portion corresponding to a portion forming the upper end seal of one opening of the opening, and further, both inner folds are formed. Is pulled out to invert the inner fold to form outer folds on both sides, and cut both sides of the outer fold along the outer fold line of the outer fold from the upper end. Forming a front plate and a rear plate facing each other, and furthermore, attaching fasteners forming concave and convex fittings to the inner surfaces of the front plate and the rear plate, and erecting the front plate and the rear plate facing each other. And heat seal both sides thereof to form a side seal portion. Heat-seal the upper end portion of the opening to form an upper end seal portion. -Not involved in the formation of the side seal, including the upper end of the seal It relates with gusset type packaging bag - fastener characterized by comprising trimming the folded portion.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below. First, the configuration of the gusset-type packaging bag with a fastener according to the present invention will be described with reference to the drawings. FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. FIG. 3 is a perspective view showing a configuration of the gusset-type packaging bag with fastener in each step of manufacturing the gusset-type packaging bag with fastener according to the present invention.

First, in the present invention, as shown in the perspective view of FIG. 1, a packaging material 1 constituting a gusset-type packaging bag is provided.
Are bonded together with their inner surfaces superposed on each other to form a back-sealing seal portion 2. Further, on both sides, inside fold portions 3, 3, 3, 3 are formed to form a gusset sleeve A. To manufacture.

Next, in the present invention, as shown in the perspective view of FIG. 2, the gusset sleeve A manufactured as described above has a lower portion below a portion corresponding to a portion forming an upper end seal portion of one opening portion. The opening notches 4, 4, 4, 4 are formed symmetrically on the four sides of the inner folded portions 3, 3, 3, 3 on both sides.

Next, in the present invention, as shown in the perspective view of FIG.
Gazette sleeve A manufactured by forming four pieces 4, 4, 4
And pulling out the inner folds 3, 3, 3, 3 in the opening where the opening cutouts 4, 4, 4, 4 are formed, and removing the inner folds 3, 3, 3, 3 Invert the inner polygonal lines l ₁ , l ₂ and the outer polygonal lines l
Outer folds 5, 5, 5, 5 defined by ₃ are formed on both sides.

Next, in the present invention, as shown in the perspective view of FIG. 4, after forming the outer folds 5, 5, 5, 5 on both sides, the outer folds 5, 5, 5,. 5,
The outer bent line l ₃ of the outer folded portions 5, ₅ , ₅ , ₅ ;
forming a cut portion 6, 6 from the upper end along the l _3.

According to the present invention, as shown in the perspective view of FIG. 5, after the cuts 6, 6 are formed in the outer folded portions 5, 5, 5, 5, the cuts 6, 6, The packaging material 1 is pushed right and left outward from the base of 6 to form opposing front and rear plates 7 and 8, and the inner surfaces of the front and rear plates 7 and 8 are also fitted with concave and convex respectively. The fastener 9 to be constituted is heat-sealed and attached.

Next, in the present invention, as shown in the perspective view of FIG. 6, the fasteners 9 forming the concave and convex fittings are respectively attached to the inner surfaces of the front plate 7 and the rear plate 8 and then opposed to each other. The front plate 7 and the rear plate 8 are erected again, and the fasteners 9 forming the concave-convex fitting provided above are concave-convex fitted. Then, both sides of the portion surrounded by the dotted lines P and P are
Heat sealing is performed including the opening notches 4 and 4 to form side seals 10 and 10.

Next, according to the present invention, as shown in the perspective view of FIG. 7, after forming side seal portions 10 and 10 on both sides, a front plate on which a fastener 9 forming a concave and convex fitting is attached. The upper end opening of the rear plate 7 and the rear plate 8 is heat-sealed to form an upper end seal portion 11, and further, the side seal portion 1 is formed.
0, 10 including the upper end portions 10 ₁ , 10 ₁
By cutting off and trimming an outer folding unit 5 _1, 5 ₁ not involved in formation of the pole tip 10, 10,
The gusset-type packaging bag with a fastener according to the present invention can be manufactured.

Thus, in the present invention, the gusset-type packaging bag with a fastener according to the present invention manufactured as described above is not shown, but the contents are taken through the opening opposite to the upper end seal portion. And then heat sealing the opening to form a bottom seal, whereby the packaged product according to the present invention can be manufactured. At the time of opening, holding the packaged product in the hand and tearing at the opening notch portion as the opening start point, the packaging material is doubled at this portion, so it can be torn very easily, The package product can be easily opened, and since the upper end of the side seal portion is trimmed and cut off, the initial opening and the end of opening can be smoothly torn. It has resealability because it has a fastener that fits unevenly, so that the contents can be repeatedly taken out and reused.

[0015] The above example illustrates the fastener according to the present invention.
It is an example of a gusset-type packaging bag with an attachment, and the present invention is not limited thereto. For example, as another example, as shown in the perspective view of FIG. 8, in the gusset-type packaging bag with a fastener according to the present invention as described above, the lower part of the upper end seal portion 11 is provided. An opening cut tape 1 extending in a uniaxial direction on both front and back surfaces of a portion of the packaging material 1 including the opening notches 4, 4.
2 can also be attached. By providing the opening cut tape 12 as described above, the opening material of the packaging material 1 constituting the package product is synergistic with the opening property of the opening cutouts 4, 4. It has the advantage that it can be easily torn straight and straight along the loop 12 and that the package product can be easily opened. In the above, as a method of providing the opening cut tape 12 as described above, as shown in FIG.
Open both sides of the part surrounded by P,
4 and heat seal the side seal portions 10 and 10
After forming (see FIG. 6), the portions on both sides of the
The side seal portions 10 and 10 are formed by sealing, and the opening cut tapes 12 and 12 are adhered to the front and back surfaces of the packaging material 1, and then, the fastener 9 forming the concave and convex fitting is provided. The upper end openings of the attached front plate 7 and rear plate 8 are heat-sealed to form an upper end seal portion 11. Further, the upper end portions 10 ₁ , 10 _{1 of the} side seal portions 10, 10 are formed. When, the Saidoshi - outer folding portion 5 ₁ not involved in formation of the pole tip 10, 10, 5 _1, opening for Kattote - flop 12 _1,
Cut off to trim the 12 _1, another form of fastener according to the present invention - can be produced with gusset type packaging bag.

In the present invention, FIG. 9 and FIG.
As shown in a perspective view of FIG. 0, in the gusset-type packaging bag with a fastener according to the present invention, an opening notch is provided at an end of the side seal portions 10, 10 at the opening notches 4, 4. 13, 13 can also be formed. Thus, by providing the opening notches 13 as described above, when opening the opening notches 4 as opening starting points, the packaging material constituting the packaged product is opened with the opening notches 13. , 13 have the advantage that they can be more easily torn than those not engraved and that the packaged product can be easily opened.

Further, in the present invention, as shown in FIG. 11, the gusset sleeves are provided at the tops of the inner folds 3, 3, 3, 3 on both sides, with the inner folds 3, 3, 3,. 3 fold lines l ₄ , l ₄ , l ₄ , l ₄
The linear seal portions 14, 14, 14, 14 are
Obtained by forming the side Gazettosuri - may be a blanking A _1. Such Gazettosuri - using Bed A _1, in the same manner as described above, according fastener to the present invention - can be produced with gusset type packaging bag, and Thus, the bag body produced in this way, When a package product is formed by filling and packing the contents, the self-sufficiency of the display of the package product can be enhanced, and the display space, the display design, and the like can be significantly improved. Have

Further, in the present invention, as shown in FIG. 12, the gusset sleeve is formed by first forming an easily-opening scar 15 on both ends of the packaging material 1 constituting the gusset-type packaging bag with a fastener. , 15 are formed, and then the packaging material 1 on which the easily-openable scars 15, 15 are formed is used, and the inner surfaces of both ends of the easily-openable scars 15, 15 of the packaging material 1 are opposed to each other. The superposed portion is heat-sealed to form a back-sealing seal portion 2, and further, inside fold portions 3 and 3 are formed on both sides to form a gusset sleeve A _{2 of the} present invention. It can also be. Such Gazettosuri - using Bed A _2, in the same manner as described above, according fastener to the present invention - can be produced with gusset type packaging bag, and Thus, the bag body produced in this way, Even if the portion of the back-sealing seal portion 2 is doubled, since the easily-openable scars 15 and 15 are formed in that portion, when opening the package product, when opening the portion, This has the advantage that the packaging material 1 can be very easily torn and the packaged product can be easily opened.

Although not shown in the present invention,
In the zipper-attached gusset-type packaging bag according to the present invention, the shape of the opening notch is not limited to a semi-elliptical shape as described above, but may be, for example, a circle, a semicircle, a rhombus, a triangle, and a rectangle. , Hexagonal, etc., and the opening notch portion is, as described above, an opening notch penetrating through the inside fold portion corresponding to a portion below the upper end seal portion. Instead of forming the portion, a notch for opening, a cutting line for opening, a perforation line for opening, or the like that penetrates the inside folded portion may be used. Further, when a resin film or sheet stretched in a uniaxial or biaxial direction is used as a packaging material for forming the gusset-type packaging bag with a fastener according to the present invention, the opening property is as described above. Opening cutout, opening cutout
Can be markedly increased in combination with a notch for opening and a notch for opening. Further, in the present invention, in the gusset-type packaging bag with a fastener according to the present invention, the shape of the opening notch provided at the end of the sand seal at the opening notch portion is the straight line as described above. Instead of a notch in the shape of, for example, a V-cut for opening, a perforation, or the like may be used.

The gusseted packaging bag with a fastener according to the present invention produced as described above has an opening notch at the side seal portion, and thus the opening notch. If there is no opening notch, the part is heat-sealed in a state where the six layers of the front plate and the rear plate, the inner folded part and the outer folded part are laminated, and the side seal part is formed. In contrast, when a notch for opening is present, the two layers of the front plate and the rear plate may be heat-sealed between their inner surfaces to form a side seal portion. This has the advantage that the packaging material constituting the packaging bag can be easily and easily torn to open the gusseted packaging bag with a fastener according to the present invention. . Furthermore, since the end portion of the sand seal portion is cut off by the trimming process, the initial opening and the final opening can be performed smoothly, and a tape for opening and a tape for opening are used together. By doing so, the opening property can be significantly improved.

Next, in the present invention, the material constituting the gusset-type packaging bag with a fastener according to the present invention will be described. First, the packaging material constituting the gusset-type packaging bag with a fastener according to the present invention will be described. As a base material film as a base material, a resin film or sheet having excellent properties in mechanical, physical, chemical, etc., and in particular, having strength and toughness and having heat resistance is used. Can be used.Specifically, for example, polyester-based resins, polyamide-based resins, polyaramid-based resins, polyolefin-based resins, polycarbonate-based resins,
A tough resin film or sheet, such as a polyacetal resin, a fluorine resin, or the like, may be used. Thus, the above resin film or sheet
Any of unstretched films or stretched films uniaxially or biaxially stretched can be used. As the thickness of the film,
It is preferably about 5 μm to 100 μm, and more preferably about 10 μm to 50 μm. In the present invention, the base film as described above is subjected to, for example, front printing or back printing by printing a desired printing pattern such as a character, a figure, a symbol, a picture, or a pattern by a normal printing method. It may be.
Further, in the base film as described above, for example, polyolefin-based resin, or polyester-based resin or the like, if it itself has a heat-sealing property, it is utilized in the present invention. A gusset-type packaging bag with a fastener can be manufactured.

Next, in the present invention, as the above-mentioned substrate film, for example, various paper substrates constituting a paper layer can be used.
The paper base material is provided with shapeability, bending resistance, rigidity, etc., for example, strong size bleached or unbleached paper base material, or pure white roll paper, kraft paper, paperboard, A paper substrate such as a processed paper or the like can be used. In the above, as the paper base material constituting the paper layer, a basis weight of about 20 to
600 g / m ² , preferably about 30 to 4 basis weight
It is desirable to use a material of about 50 g / m ² . Needless to say, in the present invention, a paper base constituting the paper layer and various resin films or sheets as the base films mentioned above can be used in combination.

Next, in the present invention, when the gusset-type packaging bag with a fastener according to the present invention is manufactured, the innermost layer or the outermost layer of the packaging material constituting the gusset-type packaging bag is overlapped or opposed. Since the heat seal is performed to form a seal portion to form a bag, the innermost layer or the outermost layer of the packaging material constituting the zippered gusset-type packaging bag according to the present invention includes: It is desirable to use a resin film having heat sealability. The heat-sealing resin film may be any film that can be melted by heat and fused together, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, and wire. Low-density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-methyl methacrylate copolymer Acid modification by modifying an ethylene-unsaturated carboxylic acid copolymer such as a polymer, ethylene-propylene copolymer, methylpentene polymer, polybutene polymer, ethylene-acrylic acid copolymer or ethylene-methacrylic acid copolymer Polyolefin resin, polyvinyl acetate resin, poly (meth) acrylic resin, Vinyl chloride resin, film or sheet of resin and other like - can be used and. Thus, the above-mentioned film or sheet can be used in a state of a coating film of a composition containing the resin. The thickness of the film, film or sheet is about 5 μm to 300 μm, preferably 10 μm
About 100 μm is desirable. By the way, in the present invention, the resin film having heat sealability as described above can be provided also on the outermost layer constituting the packaging material. The gusset sleeve according to the present invention is produced by superposing the outer layer surfaces together and heat sealing the end of the superposed surface to form a seal portion.

Further, in the present invention, the above-mentioned
As a film of the resin having a sealing property, a film or sheet of an ethylene-α-olefin copolymer polymerized by using a metallocene catalyst can be used in the same manner. Specifically, as a film or sheet of an ethylene-α-olefin copolymer polymerized using a metallocene catalyst, for example, a metallocene complex such as a catalyst formed by a combination of zirconocene dichloride and methylalumoxane and alumoxane A catalyst or catalyst of the combination, that is, a film or sheet of an ethylene-α-olefin copolymer obtained by polymerization using a metallocene catalyst can be used. The metallocene catalyst has a non-uniform active site and is called a multi-site catalyst, whereas the existing catalyst is called a single-site catalyst because the active site is uniform. Specifically, Mitsubishi Chemical Co., Ltd. product name "Kernel", Mitsui Petrochemical Industry Co., Ltd. product name "Evolu", USA, Exxon Chemical (E
XXON CHEMICAL) trade name "EXACT", Dow Chemical, USA (DOW)
CHEMICAL) "Affinity- (A
FFINITY), trade name "ENGAG (ENGAG)
E) ethylene-polymerized using a metallocene catalyst such as
An α-olefin copolymer film can be used. Thus, in the present invention, the ethylene-α.
The olefin copolymer film can be used in the form of a coating film or the like made of a composition containing the resin. The thickness of the film or film is 5
It is preferably about μm to 300 μm, preferably about 10 μm to 100 μm. In the present invention, when a film or sheet of an ethylene-α-olefin copolymer polymerized using a metallocene catalyst is used as the heat-sealing resin film as described above,
This has the advantage that low-temperature heat sealability is possible when manufacturing a bag.

Further, in the present invention, a substrate having a barrier property can be used. Therefore, as the substrate having the barrier property, light such as sunlight can be shielded. Or a material having a property of impervious to water vapor, water, gas and the like can be used.
A single substrate may be used, or a composite substrate obtained by combining two or more types of substrates may be used. Specifically, for example, a resin film having an aluminum foil having a light-shielding property and a barrier property or a vapor-deposited film thereof, a silicon oxide film having a barrier property, a resin film having a vapor-deposited film of an inorganic oxide such as aluminum oxide. , Water vapor, low density polyethylene having a barrier property such as water, medium density polyethylene, high density polyethylene, linear low density polyethylene,
Polypropylene, ethylene-propylene copolymer or other resin film or sheet, polyvinylidene chloride having gas barrier properties, polyvinyl alcohol, ethylene-
Various light-shielding colored resins obtained by adding a colorant such as a pigment to the resin film or sheet of the resin such as saponified vinyl acetate copolymer, or the like, and kneading it with other desired additives to form a film. Film or sheet or the like can be used. These materials can be used alone or in combination of two or more. The thickness of the above film or sheet is arbitrary, but is usually 5 μm.
About 300 μm, and further about 10 μm to 100 μm
The m-th position is desirable. Further, in the above, an aluminum foil having a thickness of about 5 μm to 30 μm, and an aluminum or inorganic oxide deposited film having a thickness of about 100 to 2000 mm can be used. Examples of the resin film supporting the above-mentioned vapor-deposited film include a polyester film, a polyamide film, a polyolefin film, a polyvinyl chloride film, a polycarbonate film, a polyvinylidene chloride film, a polyvinyl alcohol film, and an ethylene-acetic acid film. Saponified vinyl copolymer films and the like can be used.

Further, in the above, as the inorganic oxide constituting the above-mentioned inorganic oxide deposited film layer, for example, silicon oxide (SiO _x ), aluminum oxide, indium oxide, tin oxide, zirconium oxide or the like is used. can do. Furthermore, in the present invention, the inorganic oxide may be a mixture of silicon monoxide and silicon dioxide, or a mixture of silicon oxide and aluminum oxide. In the present invention, as a method of forming the inorganic oxide thin film layer, the thin film layer is formed by forming a vapor deposition film by a vacuum vapor deposition method such as an ion beam method or an electron beam method, or a sputtering method. be able to. In the above description, the thickness of the inorganic oxide thin film layer is usually preferably about 10 nm to 200 nm in order to obtain a sufficient barrier property.
About 150 nm is desirable. In the above, when the thickness of the inorganic oxide thin film layer exceeds 150 nm, in particular, 200
If the thickness exceeds nm, cracks and the like are likely to be formed in the inorganic oxide thin film layer, and there is a risk that the barrier property may be reduced due to the warp, and the material cost may be increased.

Usually, packaging bags are subjected to severe physical and chemical conditions, so that the packaging material constituting the packaging bags is required to have strict packaging suitability, and the deformation prevention strength is high. , Drop impact strength, pinhole resistance, heat resistance,
Various conditions such as sealability, quality maintenance, workability, hygiene, etc. are required. For this reason, in the present invention, in addition to the above materials, the above conditions are satisfied. Other materials can be used arbitrarily, specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate Copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid or methacrylic acid copolymer, methylpentene polymer,
Polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride
Vinylidene chloride copolymer, poly (meth) acrylic resin, polyacrylonitrile resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), Polyester resin, polyamide resin, polycarbonate resin, polyvinyl alcohol
Resin, saponified ethylene-vinyl acetate copolymer,
Fluorine resin, diene resin, polyacetal resin,
Any known resin film or sheet such as polyurethane resin, nitrocellulose, etc. can be used. In addition, for example, a film such as cellophane, synthetic paper, or the like can be used. In the present invention, the above-mentioned film or sheet can be used in any of unstretched and uniaxially or biaxially stretched. The thickness is arbitrary, but can be selected from a range of several μm to 300 μm. Further, in the present invention, the film or sheet may be any film such as an extruded film, an inflation film, or a coating film.

Next, a method of manufacturing the packaging material according to the present invention using the above-mentioned materials in the present invention will be described. As the method, a normal packaging material is laminated. Methods, for example, wet lamination method, dry lamination method, solventless dry lamination method, extrusion lamination method, T-die co-extrusion molding method, co-extrusion lamination method, inflation method, etc. Can be done with Thus, in the present invention, when performing the above lamination,
If necessary, the film can be subjected to a pretreatment such as a corona treatment and an ozone treatment. For example, an anchor such as an isocyanate (urethane), a polyethyleneimine, a polybutadiene, and an organic titanium can be used. Coating agent or polyurethane, polyacryl, polyester, epoxy, polyvinyl acetate, cellulose
Known anchor coating agents, adhesives and the like, such as adhesives for laminating, and other laminating materials, can be used.

In the above-mentioned method for producing a packaging material, as the extruded resin constituting the adhesive resin layer at the time of extruding and laminating, for example, polyethylene, ethylene-α-olefin copolymer, polypropylene, Polybutene, polyisobutene, polyisobutylene,
Copolymer of ethylene and unsaturated carboxylic acid such as polybutadiene, polyisoprene, ethylene-methacrylic acid copolymer, or ethylene-acrylic acid copolymer, or acid-modified polyolefin resin obtained by modifying them, ethylene-acrylic acid Ethyl copolymer, ionomer resin,
Ethylene-vinyl acetate copolymers and others can be used. Further, in the present invention, as the adhesive constituting the adhesive layer when dry laminating, specifically, a two-component curable urethane-based adhesive or a polyester urethane-based adhesive used in dry laminates and the like Polyether urethane adhesives, acrylic adhesives, polyester adhesives, polyamide adhesives, polyvinyl acetate adhesives, epoxy adhesives, rubber adhesives, and the like can be used.

Next, in the present invention, a method of engraving an easily-openable scar on a packaging material constituting a gusset-type packaging bag with a fastener according to the present invention will be described. Needle punch method for pressing heated needle, embossing roll, polishing roll,
A hot-melt perforation method for fusing and perforating a film using a grindstone, polishing tape, etc., a physical perforation method using a knife, a cutter, etc., laser beam machining, corona discharge, plasma discharge And the like, and other methods. Thus, in the present invention, when engraving the easily-openable scar on the packaging material, the state of the film alone, the state of the packaging material laminated by the laminating method as described above, and the packaging material It can be engraved in any state, such as a state of a packaging bag formed by using the bag, or a state of a package formed by filling and packaging the contents using the packaging bag. In the present invention, the shape of the easily-openable scar may be any shape such as a linear shape, a curved shape, a perforated line shape, a broken line shape, and the like, and the number thereof may be one or more, or a continuous shape. Alternatively, it may be discontinuous or the like. Further, the structure of the cut may be a state of a through hole or a transmission hole, a state of a half cut, or a state in which these are mixed. However, in the present invention, the easily-openable scar is not desirably a through-hole penetrating through all the layers of the laminate from the viewpoint of the suitability of protecting the contents. By the way, in the present invention, the most preferable method for forming the easily-opening scar is a method of engraving a continuous or discontinuous opening break using irradiation of a pulse oscillation type laser. . In the above, the types of lasers are carbon dioxide laser, YA
A G laser, a semiconductor laser, an argon ion laser or the like can be used, and is not particularly limited. In the present invention, even when an easily-openable scar is carved on the entire surface of the backside adhesive tape, the easily-openable scar can be carved by performing the above-described method.

Next, in the present invention, the fastener constituting the concave-convex fitting used when manufacturing the gusset-type packaging bag with the fastener according to the present invention includes, for example,
As shown in FIG. 13, the flat support portions 20 and 20 'are provided with a convex portion 21 and a concave portion 22, respectively.
A hook-type zipper tape B or the like, which can form a concave-convex fitting body portion with 2 and has resealability, can be used. The above-mentioned zipper tape includes a heat-sealing resin film and a heat seal on the innermost surface constituting a packaging material used in manufacturing the above-mentioned gusset-type packaging bag with a fastener. It is preferable to use a resin having an adhesive property. For example, depending on the type of the resin film having heat sealability on the innermost surface, low density polyethylene, linear (linear) low Density polyethylene,
Moldings made of heat-sealing resin such as polyethylene resins such as medium-density polyethylene and high-density polyethylene, polypropylene resins, ionomer resins, ethylene-methacrylic acid copolymers and ethylene-vinyl acetate copolymers Can be used. For example, a heat-sealing resin film of the innermost layer constituting the packaging material used when manufacturing the zipper-attached gusset-type packaging bag according to the present invention has heat-sealing properties. When an unstretched polypropylene resin film is used, in the present invention, the zipper tape has a heat-sealing property as the innermost heat-sealing film constituting the above-mentioned packaging material. It is preferable to use a resin of the same quality as that of the stretched polypropylene resin film, and use a molded article of a polypropylene resin molded using the same as a material.

According to the present invention, when manufacturing the gusset-type packaging bag with a fastener according to the present invention, a zipper tape is interposed at a predetermined position between the front plate and the rear plate. Then, the zipper tape can be heat-sealed and fixed to the respective innermost layers of the packaging material. In the above, as a method of heat sealing, for example, a bar seal, a rotary roll seal, a belt seal,
It can be performed by a known method such as an impulse seal, a high-frequency seal, and an ultrasonic seal.

In the present invention, as the cut tape for opening, the above-mentioned materials constituting the gusset-type packaging bag with a fastener according to the present invention can be similarly used. For example, polyethylene, polypropylene, polyester, polyamide, polyvinyl chloride,
Polycarbonate, polyacrylonitrile, polyacrylic resin, polystyrene, and other resins are used as main materials, and a film or sheet stretched in a uniaxial direction is used as a base film, and an adhesive layer or An opening cut tape having an adhesive layer and having a width of about 3 to 15 mm can be used.

Next, in the present invention, when manufacturing the gusset-type packaging bag with a fastener according to the present invention, a method of heat-sealing the outer peripheral portion or the like when making the bag, or a method for opening the bag. As a heat sealing method for attaching the tape, for example, a bar seal,
Rotary roll seal, belt seal, impulse seal,
It can be performed by a known method such as a high-frequency seal or an ultrasonic seal.

Next, in the present invention, the method of filling and packing the contents in the gusset type packaging bag with a fastener according to the present invention will be described. Thus, a fastener is attached, a side seal portion, an upper end seal portion and the like are further provided, and a trimming process is performed. On the other hand, the contents are filled from the other opening of the gusset sleeve, and then The end of the opening is heat-sealed to form a bottom seal, whereby the filled package product according to the present invention can be manufactured. In the above, the contents to be filled and packaged include coffee, cocoa, black tea, green tea, laver, rice, and other powdery, granular, needle-like or thin plate-like luxurious products, foods, snacks, chocolates, and the like. Toys, candy, etc.,
Various products such as detergents, bath additives, chemical products such as photographic preparations, and others can be mentioned.

[0036]

The present invention will be described more specifically with reference to the following examples. Example 1 First, a biaxially oriented polyethylene terephthalate film having a thickness of 12 μm / a low-density polyethylene layer having a thickness of 20 μm /
A packaging material having a layer structure of an aluminum foil layer having a thickness of 7 μm / a low-density polyethylene layer having a thickness of 70 μm is used, and a strip sheet having a width of 340 mm and a length of 240 mm is manufactured therefrom. The size of the gusset sleeve is 110 mm in width, and the inside fold is 50
mm to form a folded part on the inside, forming a folded part on the inside, overlapping both ends of the inner surface, and heat sealing the overlapped part to form a back-sealed seal part. Then, a gusset sleeve was manufactured as a cylindrical portion (see FIG. 1). Next, four semi-elliptical punching holes having a width of 5 mm and a length of 8 mm are formed on each of the four sides of the inner folded portion above one opening of the gusset sleeve manufactured as described above, and are opened. Notches (see FIG. 2).
Next, the inside protruding edge of the inside fold portion where the opening notch portion of the gusset sleeve having the opening notch portion formed above is pulled out to the outside and turned over to be 80 mm in length.
Formed on both sides (see FIG. 3). Thereafter, a notch having a length of 24 mm from the upper end is formed in the outer folded portion along the outer folding line of the folded portion using a cutter. (See FIG. 4). Thereafter, after the notch is formed as described above, the packaging material is pushed right and left outward from the base of the notch to form opposing front and rear plates, and further, the front and rear plates are formed. A fastener made of polyethylene constituting a concave-convex fitting was attached to the inner surface of the plate by heat sealing (see FIG. 5). Next, after attaching the fastener made of polyethylene, the front plate and the rear plate facing each other are erected, and the unevenness of the polyethylene fastener constituting the uneven fitting provided above is fitted. Then, both sides are heat-sealed to form a side seal portion (see FIG. 6). Further, the upper end of the front plate and the upper end of the rear plate to which a fastener made of polyethylene constituting the concave and convex fit is attached. A heat seal is applied to the opening to form an upper seal (see FIG. 7), and then the above-mentioned side seal is formed.
Trim and trim off the outer folds that did not contribute to the formation of the side seals, including the upper end of the
A gusset-type packaging bag with a fastener according to the present invention was manufactured. Next, coffee powder was filled from the other opening of the gusset-type packaging bag with the fastener manufactured above,
Thereafter, the opening was heat-sealed to form a bottom seal, thereby producing a packaged product according to the present invention. At the time of opening, when the sheet is torn from the portion where the notch is provided, the packaging material constituting the bag is easily torn, and can be easily opened.
The resin had resealability and could be used repeatedly.

Example 2 In the above-mentioned Example 1, when manufacturing the gusset-type packaging bag with a fastener according to the present invention, when forming the side seal portion, the portion including the opening notch portion was wrapped. A cut tape consisting of a vertically uniaxially stretched polypropylene tape having a width of 6 mm and a thickness of 60 μm / adhesive layer of 30 g · m ² was attached to both sides of the material (see FIG. 8).
In the same manner as in the method described in Example 1 above, a gusset-type packaging bag with a fastener according to the present invention was manufactured.
The gusset-type packaging bag with a fastener obtained as described above was filled and packed in the same manner as in Example 1, and the same effect was obtained.

Example 3 In Example 1, a biaxially stretched polyethylene terephthalate having a thickness of 12 μm was used in advance for the packaging material used in manufacturing the gusset-type packaging bag with a fastener according to the present invention. A large number of fine penetrating scars are formed using a roll-shaped grindstone at both ends of the film, and then a biaxially stretched polyethylene terephthalate film having a large number of such penetrating scars is used. A packaging material having a layer structure of 12 μm biaxially stretched polyethylene terephthalate film / 20 μm-thick low-density polyethylene layer / 7 μm-thick aluminum foil layer / 70 μm-thick low-density polyethylene layer was produced. Next, using the packaging material produced above, a gusset-type packaging bag with a fastener according to the present invention was produced in the same manner as in the method described in Example 1 above. The gusset-type packaging bag with a fastener obtained as described above was filled and packed in the same manner as in Example 1, and the same effect was obtained.

Example 4 In the gusset-type packaging bag with a fastener manufactured in Example 4 described above, an opening notch is engraved at the end of the side seal portion at the opening notch. A gusset-type packaging bag with a fastener according to the present invention was manufactured. The gusset-type packaging bag with a fastener obtained as described above was filled and packed in the same manner as in Example 1, and the same effect was obtained.

Example 5 Instead of the packaging material used in Example 1 above, a packaging material consisting of the following (1) to (11) was used. A gusset-type packaging bag with a fastener was manufactured, and the same effect was obtained.
(1). 12 μm thick biaxially oriented polyethylene terephthalate film layer / 3.0 g / m ² adhesive layer / thickness 9
μm aluminum foil layer / 3.0 g / m ² adhesive layer /
Packaging material having a layer structure of a low-density polyethylene layer having a thickness of 50 μm (2). 20 μm thick biaxially oriented polypropylene film layer / 20 μm low density polyethylene layer / 9 μm thickness
(3) Packaging material having a layer structure of an aluminum foil layer having a thickness of 50 m / a low-density polyethylene layer having a thickness of 50 m. Biaxially oriented polypropylene film layer with a thickness of 20 μm / low density polyethylene layer with a thickness of 15 μm / biaxially oriented polyethylene terephthalate film layer with a thickness of 12 μm / aluminum evaporated film / low density polyethylene layer with a thickness of 15 μm / thickness A packaging material having a layer structure of a non-stretched polypropylene layer having a thickness of 20 μm (however, the fastener is
(4). 15 μm thick biaxially stretched nylon film layer /
3.0 g / m ² adhesive layer / 15 μm-thick biaxially stretched nylon film layer having an aluminum evaporated film / 3.
Packaging material having a layer structure of 0 g / m ² adhesive layer / 50 μm thick ethylene-vinyl acetate copolymer layer (5). From a layer structure of a biaxially oriented polypropylene film layer having a thickness of 40 μm / an adhesive layer having a thickness of 3.0 g / m ² / a non-stretched polypropylene film layer having a thickness of 25 μm having an aluminum vapor deposition film / a low-density polyethylene layer having a thickness of 50 μm. Packaging material (6). 12 μm thick biaxially oriented polyethylene terephthalate film layer / 20 μm thick low-density polyethylene layer / 12 μm thick biaxially oriented polyethylene terephthalate film layer having a deposited silicon oxide film / 3.0 g / m
^2. Packaging material having a layer structure of adhesive layer / low-density polyethylene layer having a thickness of 40 μm (7). # 300 moisture-proof cellophane layer / 20-μm-thick low-density polyethylene layer / 7-μm-thick aluminum foil layer / 20-μm-thick low-density polyethylene layer / basis weight 52 g /
Packaging material having a layer structure of paper layer of m ² / low-density polyethylene layer of 60 μm in thickness (8). 15 µm thick coated with polyvinylidene chloride
Packaging material having a layer structure of biaxially stretched nylon film layer / non-stretched polypropylene film layer having a thickness of 40 μm (the fastener is made of polypropylene) (9). Polyvinylidene chloride coated thickness 12 μm
Biaxially oriented polyethylene terephthalate film layer / low-density polyethylene layer having a thickness of 15 μm / biaxially oriented polyethylene terephthalate film layer having a thickness of 12 μm and a low-density polyethylene layer having a thickness of 70 μm Packaging material having composition (10). Packaging material having a layer structure of # 300 moisture-proof cellophane layer coated with polyvinylidene chloride / low-density polyethylene layer having a thickness of 15 μm / unstretched polypropylene film layer having a thickness of 40 μm (11). 12 μm thick biaxially oriented polyethylene terephthalate film layer / 3.0 g / m ² adhesive layer / 18 μm thick transverse uniaxially oriented polyethylene film layer / thickness 2
Packaging material having a layer structure of 0 μm low-density polyethylene layer / 9 μm-thick aluminum foil layer / 70 μm-thick low-density polyethylene layer

[0041]

As is apparent from the above description, the present invention provides a gusset-type packaging bag in which both ends of a packaging material are attached to each other to form a back-attached seal, and both sides thereof are formed. A gusset sleeve is formed by forming an inner folded portion on the inner side of the gusset sleeve, and is symmetrical with respect to four sides of both inner folded portions below a portion corresponding to a portion forming an upper end seal portion of one opening portion of the gusset sleeve. Forming the opening notch part, and furthermore, pull out the both inner folded parts outward, invert the inner folded part to form the outer folded parts on both sides, and furthermore, in the both outer folded parts. A notch is cut out from the upper end along the outer fold line of the outer fold to form a front plate and a rear plate facing each other, and thereafter, the concave and convex fittings are respectively formed on the inner surfaces of the front and rear plates. Attach fasteners and face each other Heat the both sides by upright and a rear and plate plate - tosylate - Le to Saidoshi - provided Le unit, also heat the upper portion of the openings - city - upper and Le sheet -
Forming a gusset-type packaging bag with fasteners by forming an outer folded portion that is not involved in the formation of the side seal portion including the upper end portion of the side seal portion. Therefore, when opening the bag body, the opening notch is used as an opening starting point, and the bag can be easily and easily opened by holding by hand,
Furthermore, it is possible to manufacture a gusset-type packaging bag with a fastener having a fastener at the opening portion of the bag, which is rich in resealability, can be used repeatedly, and has a suitability for filling and packaging the contents. It is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a gusset sleeve used in manufacturing a gusset-type packaging bag with a fastener according to the present invention.

FIG. 2 is a perspective view showing a configuration of the gusset-type packaging bag with a fastener in a process of manufacturing the gusset-type packaging bag with the fastener according to the present invention.

FIG. 3 is a perspective view showing a configuration of the gusset-type packaging bag with a fastener in a process of manufacturing the gusset-type packaging bag with the fastener according to the present invention.

FIG. 4 is a perspective view showing a configuration of the gusset-type packaging bag with a fastener in a step of manufacturing the gusset-type packaging bag with the fastener according to the present invention.

FIG. 5 is a perspective view showing the configuration of the fastener-attached gusset-type packaging bag in the step of manufacturing the fastener-attached gusset-type packaging bag according to the present invention.

FIG. 6 is a perspective view showing a configuration of the gusset-type packaging bag with a fastener in a step of manufacturing the gusset-type packaging bag with the fastener according to the present invention.

FIG. 7 is a perspective view showing a configuration of the gusset-type packaging bag with a fastener in a step of manufacturing the gusset-type packaging bag with the fastener according to the present invention.

FIG. 8 is a perspective view showing a configuration of a gusset-type packaging bag with a fastener according to another embodiment in a process of manufacturing the gusset-type packaging bag with a fastener according to the present invention.

FIG. 9 is a perspective view showing a configuration in which an opening notch is provided in the gusset-type packaging bag with a fastener according to the present invention.

FIG. 10 is a perspective view showing a configuration in which an opening notch is provided in the gusset-type packaging bag with a fastener according to the present invention.

FIG. 11 is a perspective view showing the configuration of another type of gusset sleeve used when manufacturing the gusset-type packaging bag with a fastener according to the present invention.

FIG. 12 is a perspective view showing the configuration of another type of gusset sleeve used in manufacturing the gusset-type packaging bag with a fastener according to the present invention.

FIG. 13 is a perspective view showing a configuration of a fastener that forms a concave-convex fit in the gusset-type packaging bag with a fastener according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Packaging material 2 Back bonding seal part 3 Inner fold part 4 Opening notch part 5 Outer fold part 5 ₁ Outer fold part 6 Notch part 7 Front plate 8 Rear plate 9 Fastener 10 which forms uneven fitting 10 Side seal Seal part 10 ₁ Upper end part of side seal part 11 Upper seal part 12 Cut tape for opening 12 ₁ Cut tape for opening 13 Notch for opening 14 Linear seal part 15 Easy-to-open flaw A Gazette Three Bed A ₁ Gazettosuri - Bed A ₂ Gazettosuri - Bed B Jippate - flop P dotted l _1, l ₂ inner fold line l ₃ outer fold line l ₄ fold line

Claims (4)

[Claims] 1. A gusset-type bag having an inner folded portion on both sides, wherein both ends of a wrapping material constituting the gusset-type bag are stuck together to form a back-sealing seal portion, and
A gusset sleeve is formed by forming inner folds on both sides of the gusset sleeve. Further, both inner folds below a portion corresponding to a portion forming an upper end seal portion of one opening of the gusset sleeve are formed. Opening notches are formed symmetrically on the four sides, and furthermore, both inner folds are pulled out to invert the inner folds to form outer folds on both sides. A notch is cut from the upper end of the outer fold along the outer fold line of the outer fold to form opposed front and rear plates, and
Fasteners forming concave and convex fittings are attached to the inner surfaces of the front plate and the rear plate, respectively, and both sides of the opposed front plate and the rear plate are heat-sealed to provide side seal portions. The upper end of the opening is heat-sealed to form an upper seal, and furthermore, the outer fold including the upper end of the side seal is not involved in the formation of the side seal. A gusset-type packaging bag with a zipper, which is obtained by trimming. 2. The method according to claim 1, wherein a linear seal portion is formed on four sides along a fold line of the inner fold at the fold top of the inner fold.
2. A gusset-type packaging bag with a fastener according to item 1. 3. The method according to claim 1, wherein an opening cut tape is adhered on the opening notch.
Or a gusset-type packaging bag with a fastener according to item 2. 4. An opening notch is engraved at an end of a side seal portion where an opening notch is engraved between a portion to which a fastener is attached and an upper end seal portion. The gusset-type packaging bag with a fastener according to claim 1, 2 or 3, wherein