JPH1110800A - Laminate and packaging bag utilizing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a surface decoration beautiful without spoiling the functional characteristics of aqueous ink by a method wherein a printed pattern layer, produced by an aqueous ink composite, an aqueous adhesive layer, an aqueous anchor coat agent layer or a solventless adhesive agent layer and a heat seal resin layer are laminated sequentially on a substrate film. SOLUTION: A printed pattern layer 2, produced by an aqueous ink composite, an aqueous adhesive agent layer 3, an aqueous anchor coat agent layer 3a or a solventless adhesive agent layer 3b and a heat seal resin layer 4 are laminated sequentially on a substrate film 1. Further, an overcoat layer, produced by an aqueous resin composite, whose principal constituent of vehicle is a resin, can be provided on the whole surfaces of the substrate film 1 including the printed pattern layer 2. In another case, a resin film, effected as the overcoat layer, can be laminated on the whole surface of the substrate film 1 including the printed pattern layer 2 through the aqueous adhesive agent layer 3, the aqueous anchor coat agent layer 3a or the solventless adhesive agent layer 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated material and a packaging bag using the same, and more particularly, to a printed pattern layer, an adhesive layer and the like using an aqueous ink composition or an aqueous adhesive. TECHNICAL FIELD The present invention relates to a laminated material formed so as to have no influence on contents by a residual organic solvent and the like, and a packaging bag using the same.

[0002]

2. Description of the Related Art Conventionally, in order to fill and package various articles, a paper base, a plastic base, a metal foil, or the like is used, and these are arbitrarily laminated to develop various packaging materials. Have been. Thus, these packaging materials
Usually, a gravure ink that uses many organic solvents, or
Using flexo ink, etc., gravure printing, or
A desired printed pattern or the like is formed by flexographic printing or the like. These packaging materials, combined with the improvement of their functionality and the beauty of surface decoration, etc., can be used for packing various articles as packaging containers such as paper containers, plastic flexible packaging bags, and the like. It is frequently used for packaging.

[0003]

However, in the above-mentioned packaging material, various problems are caused because a gravure ink or the like which uses an organic solvent frequently is used in forming a desired printed pattern or the like. It is what you have. For example, after printing, pollution problems such as air pollution due to solvents that are dried and released, problems with disaster prevention for handling flammable solvents, problems with the working environment where solvents are used, problems with resource saving, effects on contents, There are various problems such as high cost and other economic problems. To this end, various technical countermeasures have been studied, and various technical improvements and improvements, such as, for example, solvent recovery, high solidification, solventlessness, aqueousization, etc., have been developed and proposed. Among them, in particular, from the viewpoint of the current technical level, equipment, etc., various technical countermeasures for water-based gravure inks, flexo inks, etc. were studied and implemented as relatively realistic countermeasures. Has been moved to. However, even if the gravure ink, flexo ink, etc. are made water-based, the plastic film etc. constituting the packaging material is a non-absorbent material. There are various problems such as ink wetting and other problems, and it is a reality that the present condition is not sufficiently satisfactory. Accordingly, the present invention provides a packaging material that uses water-based gravure ink and the like, does not impair its functionality, has beautiful surface decoration, etc., and can be sufficiently satisfied, and a packaging bag using the same. That is.

[0004]

As a result of various studies to solve the above-mentioned problems, the present inventor has found that a printed pattern layer, an adhesive layer and the like constituting a packaging material can be formed with an aqueous ink composition or an aqueous ink composition. Focusing on forming using an aqueous adhesive etc.,
First, at least a base film, a printed pattern layer made of an aqueous ink composition provided on the front surface, the back surface, or both surfaces of the base film, an aqueous adhesive layer made of an aqueous adhesive, and an aqueous anchor coating agent A laminated material is manufactured by sequentially laminating a water-based anchor coat layer or a solventless adhesive layer made of a solventless adhesive, and a heat-sealing resin layer to produce a laminated material. The heat-sealing resin layers are superposed on each other so that the surfaces thereof face each other.
When a packaging bag is manufactured by sealing and forming a seal portion, and the contents are filled and packaged in the packaging bag, the above-mentioned various problems occur. The present invention has been completed by finding that a packaging material, a packaging bag, and the like can be manufactured in which the influence of the residual organic solvent or the like on the contents is completely eliminated.

That is, the present invention provides at least a base film, a printed pattern layer made of an aqueous ink composition provided on the front surface or back surface or both surfaces of the base film, an aqueous adhesive layer made of an aqueous adhesive, A water-based anchor coating agent layer using an anchor coating agent or a solvent-free adhesive layer using a solvent-free adhesive and a heat-sealing resin layer are sequentially laminated. And a packaging bag using the same.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below. First, the configuration of the laminated material according to the present invention and the configuration of a packaging bag using the same will be described with reference to the drawings by exemplifying a few of them. FIGS. FIG. 6 is a schematic cross-sectional view showing a layer configuration of the laminated material according to the present invention. FIG. 6 is a schematic perspective view showing a configuration of a packaging bag according to the present invention using the laminated material shown in FIG. FIG. 7 is a schematic plan view showing an example of a packaged product in which contents are filled and packaged in the packaging bag shown in FIG. 6.

First, as a laminated material according to the present invention, for example, as shown in FIG. 1, at least a base film 1, a printed pattern layer 2 of an aqueous ink composition provided on the back surface of the base film 1, Aqueous adhesive layer 3 using an aqueous adhesive, aqueous anchor coating layer 3a using an aqueous anchor coating agent, or solventless adhesive layer 3 using a solventless adhesive.
b, and a laminated material A having a configuration in which the heat-sealing resin layer 4 is sequentially laminated.

[0008] Alternatively, as a laminated material according to the present invention, for example, as shown in FIG. 2, at least a base film 1, a printed pattern layer 2 a of an aqueous ink composition provided on the surface of the base film 1, Aqueous adhesive layer 3 of an aqueous adhesive, aqueous anchor coat of an aqueous anchor agent
A laminated material B having a configuration in which a heat-resistant resin layer 3b or a heat-sealing resin layer 4 and a solvent-free adhesive layer 3b made of a solvent-free adhesive and a heat-sealing resin layer 4 are sequentially laminated can be used.

Further, the laminated material according to the present invention includes:
For example, as shown in FIG. 3, the laminated material B shown in FIG.
In addition, a laminated material C having a configuration in which an overcoat layer 5 of an aqueous resin composition containing a resin as a main component of a vehicle is further provided on the entire surface of the base film 1 including the printed pattern layer 2a. be able to. In the figure, 3, 3a, 4, etc. have the same meanings as shown in FIG.

Further, as a laminated material according to the present invention, for example, as shown in FIG. 4, the laminated material B shown in FIG. Overcoating is performed via the aqueous adhesive layer 3 made of an aqueous adhesive, the aqueous anchor coating agent layer 3a made of an aqueous anchor coating agent, or the solventless adhesive layer 3b made of a solventless adhesive. A laminated material D having a configuration in which a resin film 5a as the protective layer 5 is laminated.
In the figure, 4 and the like have the same meaning as shown in FIG.

Further, as a laminated material according to the present invention, for example, as shown in FIG. 5, printing with at least a base film 1 and an aqueous ink composition provided on both front and back surfaces of the base film 1 Pattern layers 2 and 2a, an aqueous adhesive layer 3 using an aqueous adhesive, an aqueous anchor coating layer 3a using an aqueous anchor coating agent, or a solventless adhesive layer 3b using a solventless adhesive. And a laminated material E having a configuration in which the sealing resin layers 4 are sequentially laminated. In the above description, although not shown, as shown in FIGS. 3 and 4 above, the entire surface of the base film 1 including the printed pattern layer 2a is covered with an aqueous resin composition containing a resin as a main component of a vehicle. It is possible to provide the coat layer 5 or to laminate a resin film 5a as the overcoat layer 5.

Next, in the present invention, as a packaging bag according to the present invention formed by using the above-described laminated material and making a bag, for example, as shown in FIG. Explaining an example using the laminated material A, the above-described laminated materials A and A
The heat-sealing resin layers 4 and 4 are superposed on each other with the surfaces thereof facing each other. Thereafter, for example, the three peripheral edges are heat-sealed to form a seal portion 6, By forming 6, 6, the packaging bag F according to the present invention can be manufactured. Thus, in the present invention, as shown in FIG. 7, the packaging bag F manufactured as described above is filled with the contents 7 from the opening above it, and then the opening is heat-sealed. Then, the upper end seal portion 8 is formed to manufacture a packaged product G using the packaging bag F according to the present invention. In the above packaging product G, a printed pattern layer, an adhesive layer and the like are formed by using an aqueous ink composition, an aqueous adhesive, an aqueous anchor coating agent, or a solventless adhesive. Therefore, no organic solvent remains,
This solves the problem that the solvent and the like are transferred to the contents, causing the contents to smell the solvent. In particular, in the present invention, when the contents are foods and drinks, etc., the residual organic solvent does not migrate to the contents such as foods and drinks, thereby improving the problem of food hygiene for the contents such as foods and drinks. It has the advantage of being able to do so.

The above examples are examples of the laminated material according to the present invention and a packaging bag using the same, and the present invention is not limited thereto. The packaging bag according to the present invention can be manufactured in the same manner as described above using the laminated materials shown in FIGS. In addition, as the form of the packaging bag, it is possible to produce a packaging bag having various forms such as a self-standing bag (standing pouch), a gusset seal type packaging bag, a pillow type packaging bag, and the like. You can do it.

Next, in the present invention, the materials constituting the above-described laminated material, the packaging bag, etc., and the manufacturing method thereof will be described. Since it is a basic material constituting a bag for use, mechanical, physical, chemical, and the like can be used a resin film or sheet having excellent properties in other, such as, for example, Use films or sheets of tough resin such as polyester resin, polyamide resin, polyaramid resin, polypropylene resin, polycarbonate resin, polyacetal resin, fluorine resin, etc. Can be. Thus, as the resin film or sheet, any one of an unstretched film and a stretched film stretched in a uniaxial or biaxial direction can be used. Further, in the present invention, the thickness of the resin film or sheet may be any thickness that can be held to the minimum necessary for strength, rigidity, and the like. On the contrary, if it is too thin, the strength, rigidity, etc. decrease, which is not preferable. In the present invention, for the above reason, about 10 μm to about 100 μm, preferably about 12 μm to 50 μm
Rank is most desirable.

Next, the aqueous ink composition constituting the printed pattern layer in the present invention will be described. For example, the aqueous ink composition comprises a resin for an aqueous ink as a main component of a vehicle, And other additives such as waxes, dispersants, defoamers, leveling agents, stabilizers, fillers, lubricants, lubricants, etc., and optionally water, or water and alcohol. An aqueous ink composition which is sufficiently kneaded with a mixer or the like by using a solvent composed of a solvent or the like can be used.

In the above, as the resin for the aqueous ink, it is possible to use a solution type, a hydrosol type or an emulsion type natural resin, a synthetic resin, or a mixture of one or more of these modified resins. it can. Specifically, as a resin for aqueous ink, for example,
(Meth) acrylic monomers such as acrylates, methacrylates, hydroxylethyl acrylate, hydroxylethyl methacrylate, nitrile monomers such as acrylonitrile and methacrylonitrile, and amides such as acrylamide and methacrylamide A monomer, an N-alkoxy substituent of the amide monomer,
-Methylol-substituted product, styrene, vinyltoluene, α-
Styrene monomers such as methylstyrene and divinylbenzene, allyl monomers such as diallyl phthalate, allyl glycidyl ether and triallyl isocyanurate, and polymerizable double bonds such as vinyl acetate and N-vinylpyrrolidone. And one or more monomers having a carboxyl group, and one or more unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, etc. An alkali solution-soluble (meth) acrylic copolymer composed of the above copolymer can be used. Furthermore, in the present invention, examples of the resin for aqueous ink include polyallylamide resin, poly (meth) acrylic acid resin, polyethylene oxide resin, poly N-vinylpyrrolidone resin, and water-soluble polyurethane resin. Water-soluble polyester resins, water-soluble polyester resins, water-soluble polyamide resins, water-soluble amino resins, water-soluble phenol resins, other water-soluble synthetic resins, polynucleotides, polypeptides, etc. Water-soluble natural polymers such as polysaccharides and the like can also be used. In the present invention, examples of the water-based ink resin include natural rubber, synthetic rubber, polyvinyl acetate resin, (meth) acrylic resin, polyvinyl chloride resin, polyurethane resin, and polyurethane-polyacrylic resin. Modified or mixed resins and other resins can be used. Thus, in the present invention, one or more of the above resins can be used, and can be used in the form of a solution type, a hydrosol type, or an emulsion type suitable for the resin.

Next, in the above, ordinary water for industrial use and the like can be used as the water, and the solvent consisting of water and alcohol is ethanol, in addition to water.
And lower alcohols such as isopropyl alcohol and N-propyl alcohol, glycols and esters thereof, and the like. -And their esters, etc.
It is desirable to contain it at a ratio of about 5 to 20% by weight. In the aqueous ink as described above, solvents such as the lower alcohols, glycols and their esters as described above improve the fluidity of the ink, improve the wetting of the printing medium, and improve the drying property. It is used for the purpose of adjustment or the like, and the type, amount used, etc. are determined according to the purpose.

In the present invention, the aqueous ink composition as described above is used, and for example, the surface of a substrate film is formed by a gravure printing method or a flexographic printing method.
A desired printed pattern layer such as a character, a figure, a symbol, a picture, and the like can be formed on the back surface or on both surfaces.

Next, in the present invention, as the aqueous adhesive constituting the aqueous adhesive layer, for example, a resin for an aqueous adhesive is used as a main component of a vehicle, and a wax, a dispersant, and an antifoaming agent are added thereto. , Leveling agents, stabilizers, fillers, lubricants,
Use an aqueous type adhesive or an emulsion type aqueous adhesive obtained by adding additives such as a lubricant, etc. arbitrarily and sufficiently kneading using a solvent or the like using a mixer or the like. Can be. In the above description, examples of the resin for an aqueous adhesive include a polyallylamide resin, a poly (meth) acrylic acid resin, a polyethylene oxide resin, a poly N-vinylpyrrolidone resin, and a water-soluble polyurethane resin (water-soluble polyurethane resin). Two-component curable polyurethane resin),
Water-soluble polyester resin, water-soluble polyamide resin,
Use water-soluble amino resins, water-soluble phenol resins, water-soluble synthetic resins such as others, water-soluble natural polymers such as polynucleotides, polypeptides, polysaccharides, etc., and soluble resins such as others. Can be. In the present invention, examples of the resin for an aqueous adhesive include natural rubber, synthetic rubber, polyvinyl acetate resin, (meth) acrylic resin, polyvinyl chloride resin, and polyurethane resin (two-component curable polyurethane). Resins), modified or mixed resins of polyurethane-polyacrylic resins, and emulsion resins of other resins. Further, the above-mentioned alkali solution-soluble (meth) acrylic copolymer can be used. Furthermore, as a water-based dry laminating adhesive, a two-part curable water-based adhesive (ADW-615 / CAT-EP5, manufactured by Toyo Motor Corporation)
Can also be used, which was the most preferred. Examples of the method of applying the aqueous adhesive include a gravure coating method, a reverse roll coating method, and a knife coating method.
Coating method, kiss coating method, and other methods, and the amount of coating may be 1 to 5 g / m
^{The second} position, preferably the ^{second to} third g / m ² position is desirable.

Next, in the present invention, the aqueous anchor
Examples of the aqueous anchor coating agent constituting the coating agent layer include an aqueous ethyleneimine anchor coating agent, an aqueous polybutadiene anchor coating agent, and a water-dispersible polyurethane anchor coating agent. -Take agent (manufactured by Takeda Pharmaceutical Co., Ltd., trade name, Takerac AW-605 / Takenet AW
Anchor coating agent containing no solvent such as -725) can be used. Examples of the method of applying the above-mentioned anchor coating agent include the gravure coating method, the reverse roll coating method, the knife coating method, the kiss coating method and the like in the same manner as described above. The amount of the coating in a dry state is about 0.1 to 5 g / m ² , preferably about 0.5 to 1 g / m ² .

Next, in the present invention, as the solventless adhesive constituting the solventless adhesive layer, for example, a thermosetting adhesive, an ultraviolet curing adhesive, or an electron beam curing adhesive may be used. Materials that constitute the main components of the vehicle include, for example, (meth) acrylic materials,
Solvent-free adhesives mainly composed of phenyl / polyallyl compounds, ethoxy, polyesters, polyurethanes, or mixtures or composites thereof can be used. As a method for applying the above-mentioned solvent-free adhesive, for example, a gravure coating method, a reverse roll coating method, a knife coating method, a kiss coating method, and the like, in the same manner as described above. The composition can be applied in a dry amount of about 1 to 5 g / m ² , preferably ^{2 to 3} g / m ^2.
Position is desirable.

Next, in the present invention, the heat-sealing resin constituting the heat-sealing resin layer is not particularly limited as long as it can be melted by heat and fused to each other.
Low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer
Polyolefin resins such as resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, polyethylene and polypropylene A resin film or sheet made of one or more resins such as acid-modified polyolefin resins modified with unsaturated carboxylic acids such as methacrylic acid, maleic anhydride, fumaric acid, etc. be able to. The resin film or sheet described above can be used in a single layer or a multilayer,
As a barrier material for oxygen, water vapor and the like, for example, aluminum,
A metal film such as silicon oxide or aluminum oxide, or a vapor-deposited film of an inorganic oxide or the like can also be provided. The thickness of the resin film or sheet is about 5 μm to 300 μm,
Preferably, about 10 μm to 100 μm is desirable.

In the present invention, among the above resin films or sheets, it is particularly preferable to use linear low density polyethylene. In other words, the linear low-density polyethylene has the advantage of improving the impact resistance with less propagation of breakage due to its tackiness, and also because the inner layer is in constant contact with the contents. It is also effective for preventing deterioration of environmental stress cracking resistance.
In the present invention, the linear low-density polyethylene,
Other resins can be blended, for example, by blending ethylene-butene copolymer or the like,
Although heat resistance is poor and seal stability tends to deteriorate in a high temperature environment, there is an advantage that tearability is improved and contributes to easy opening.

Further, in the present invention, the above-mentioned
Specific examples of the linear low-density polyethylene as a film or sheet of a resin having a sealing property include a film or sheet of an ethylene-α-olefin copolymer polymerized using a metallocene catalyst. It can be used as well. Examples of the film or sheet of the ethylene-α-olefin copolymer polymerized using the above metallocene catalyst include, for example, a catalyst obtained by combining a metallocene complex such as a catalyst obtained by combining zirconocene dichloride and methylalumoxane with alumoxane. 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. The film or sheet can be used as a single layer or a multilayer, and the thickness is 5 μm.
To about 300 μm, preferably 10 μm to 10 μm.
About 0 μm is desirable. In the present invention, when a film or sheet of an ethylene-α-olefin copolymer polymerized using a metallocene catalyst is used as a film of the resin having heat sealability as described above, a bag may be used. It has the advantage that low temperature heat sealability is possible when producing the body.

Next, in the present invention, the overcoat layer covers the entire surface of the substrate film, for example, while protecting the printed pattern layer formed on the substrate film. Further, it serves to assist or reinforce the function, action, and the like of the base film.For example, by applying an aqueous resin composition containing a resin as a main component of a vehicle on the base film. Alternatively, on the base film, an aqueous adhesive layer of the above-described aqueous adhesive, an aqueous anchor coat layer of an aqueous anchor coat agent, or a solventless adhesive layer of a solventless adhesive By laminating a resin film through the above, an overcoat layer can be formed.

In the above, as the aqueous resin composition containing a resin as a main component of the vehicle, the above-mentioned solution type resin, emulsion type resin, hydrosol type resin, and other resins are similarly used. , One or more of which are the main components of the vehicle, and optionally add additives such as waxes, dispersants, defoamers, leveling agents, stabilizers, fillers, lubricants, lubricants, etc. ,
An aqueous solution type, an emulsion type, or a well-kneaded mixture using a solvent composed of water or the like using a mixer or the like.
A hydrosol-type aqueous resin composition can be used. As a coating method of the above aqueous resin composition, for example,
It can be applied by a gravure coating method, a reverse roll coating method, a knife coating method, a kiss coating method, or the like. The film thickness is 1 to 30 μm in a dry state.
And preferably about 1 to 5 μm.

Next, in the above, the aqueous adhesive, the aqueous anchor coating agent, the solventless adhesive, etc.
The foregoing can be used as well. Examples of the resin film laminated via a water-based adhesive layer, a water-based anchor coating agent layer, or a non-solvent type adhesive layer include, for example, the above-described resin film or sheet having excellent strength. Or a heat-sealing resin film constituting the heat-sealing resin layer, or a film or sheet of various resins such as others. As the resin film, 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, fluororesin, diene resin, polyacetal resin, polyurethane resin, nitrocellulose And various types of resin films such as stainless steel and others. In the present invention, if the film thickness of the resin is too large, the cost is increased, and if the film thickness is too small, the film as an overcoat layer is formed. There is a problem that the function fades,
About 3 to 30 μm, preferably about 5 to 20 μm is desirable.

Next, in the present invention, in addition to the above-mentioned materials, for example, as an intermediate layer, for example, light such as sunlight may be used as a material constituting the laminated material and the packaging bag according to the present invention. It is possible to use a material having a property of shielding light, or a property of impermeable to gas such as water vapor, water, oxygen, or the like, which may be a single base material or a combination of two or more base materials. It may be a composite substrate or the like.
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. Film or sheet of resin such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-propylene copolymer, etc. Polyvinylidene chloride and polyvinyl alcohol
, A film or sheet of a resin such as saponified ethylene-vinyl acetate copolymer, and a colorant such as a pigment added to the resin, and other desired additives. Films or sheets of various colored resins can be used. These materials can be used alone or in combination of two or more. The thickness of the above-mentioned film or sheet is arbitrary, but is usually about 5 μm to 300 μm, and more preferably about 10 μm.
m to 100 μm is desirable. Further, in the above, as the aluminum foil, 5 μm to 30 μm
A film having a thickness of about 100 mm or about 200 to 2000 mm can be used as a deposited film of aluminum or an inorganic oxide. 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 vapor-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 inorganic oxide 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 100 ° to 2000 ° in order to obtain a sufficient barrier property.
It is desirable to be around {1500}. In the above, when the thickness of the inorganic oxide thin film layer exceeds 1500 °, in particular, 2
When it exceeds 000 °, cracks and the like are apt to be formed in the thin film layer of the inorganic oxide, and there is a danger that the barrier property is lowered by the warp, and the material cost is increased. , Less than 100 °, especially less than 200 °, it is difficult to obtain the effect, which is not preferable.

By the way, usually, packaging containers are subjected to severe physical and chemical conditions. Therefore, strict packaging suitability is required for a laminated material constituting the packaging container.
Various conditions such as deformation prevention strength, drop impact strength, pinhole resistance, heat resistance, sealing property, quality maintenance, workability, hygiene, etc. are required. In addition to such materials, other materials that satisfy the above conditions 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 Coalesce (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, synthetic paper 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 is from several μm to 300 μm.
It can be used by selecting from a range of positions. 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 a laminate using the above-mentioned materials in the present invention will be described. The method includes a laminating method used when manufacturing a normal packaging material. Method, for example, wet lamination, dry lamination, solvent-free lamination
It can be carried out by an extrusion method, an extrusion lamination method, a co-extrusion lamination method, or other methods. Thus, in the present invention, when performing the above lamination, if necessary, for example, the surface of the base film, corona treatment,
Pretreatment such as ozone treatment and frame treatment can be performed on the film. In the above, the extruded laminating
For example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (linear) low-density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer A polyolefin resin such as a copolymer, an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, an ethylene-propylene copolymer, a methylpentene polymer, a polyethylene, or a polypropylene is used as an acrylic acid, a methacrylic acid, a maleic anhydride, a fuma resin. An acid-modified polyolefin resin modified with an unsaturated carboxylic acid such as carboxylic acid or the like can be used as a resin for extrusion.

Next, a description will be given of a packaging bag manufactured by using the above-mentioned laminated material in the present invention. The packaging bag uses the above-described laminated material, and has a heat seal property. The surfaces of the resin layers are superposed one on the other, and then the peripheral edge is heat-sealed to form a seal portion, whereby the packaging bag according to the present invention can be manufactured. In addition,
In the present invention, it is possible to manufacture a packaging bag having a configuration in which a chuck tape that can be repeatedly fitted is provided on the inner surface of the packaging bag and at a lower portion of the opening. is there. Thus, as a bag making method, the above-described laminated material is bent or overlapped so that the surfaces of the inner layers are opposed to each other, and the peripheral end thereof is, for example, a side-sealed type. One-sided seal type, Three-sided seal type, Four-sided seal type, Envelope-sealed seal type, Gassho-sealed seal type (Pyro-seale
Heat seals, heat seals such as pleated seals, flat bottom seals, square bottom seals, etc., from various forms according to the present invention. Can be manufactured. In addition, for example, a self-supporting packaging bag (standing pouch) can be used. In the above, as a method of heat sealing, for example,
Roll, rotary roll seal, belt seal, impulse seal
It can be performed by a known method such as a seal, a high-frequency seal, an ultrasonic seal, or the like.

Next, in the present invention, for example, snacks, candy, chocolate, candy, other confectionery, miscellaneous goods, medicines, and other articles are taken from the opening of the packaging bag manufactured as described above. After that, the opening is heat-sealed to form a seal portion, whereby a packaged product using the packaging bag according to the present invention can be manufactured. Thus, the above-mentioned packaged product satisfies various functions such as impact resistance, environmental stress cracking resistance, seal stability, fragrance retention, storage stability, etc. The packaging bag according to the present invention has no trouble, and in particular, has the advantage that the solvent and the like do not transfer to the contents and the solvent odor can be completely eliminated.

[0034]

Next, the present invention will be described in more detail with reference to examples. Example 1 First, 15% by weight of a urethane acrylic emulsion composed of a water-soluble acrylic resin and a water-soluble polyurethane resin, 15% by weight of a pigment (titanium oxide), 50% by weight of water, and ethanol
10% by weight of N-propyl alcohol, 10% by weight of N-propyl alcohol, and other additives such as a lubricant, defoamer, polyethylene wax, pH adjuster, etc. are sufficiently kneaded with a mixer to form an aqueous ink composition. The product was prepared, and a desired print pattern layer was formed on the back surface of a biaxially stretched polypropylene film having a thickness of 20 μm by a gravure printing method using the aqueous ink composition. Next, a two-component curable water-based adhesive (Toyo Mo-
AD-W615 / CAT-E, manufactured by Ton Co., Ltd.
P5) is applied by a gravure coating method to form an aqueous adhesive layer of about 2 g / m ² (dry state), and thereafter, an aluminum vapor-deposited film is formed on the aqueous adhesive layer surface. The non-stretched polypropylene film having a thickness of 25 μm was dry-laminated with its aluminum-deposited film surface facing the aqueous adhesive layer surface to produce a laminate according to the present invention. Next, the laminated material produced above, the unstretched polypropylene film surface is superimposed, facing each other,
Thereafter, the three peripheral edges were heat-sealed to produce a three-side seal type packaging bag. Next, the packaging bag manufactured as described above was filled with snacks, and then the opening was heat-sealed to form an upper end sealing portion, thereby manufacturing a packaged product. The above packaged product was subjected to normal storage and distribution, and then, after opening the packaged product and eating the contents, there was no solvent odor from the laminated material constituting the packaging bag.

Example 2 First, 15% by weight of a water-soluble acrylic acid copolymer emulsion, 15% by weight of a pigment (phthalocyanine blue), 50% of water
% By weight, ethanol 10% by weight, N-propyl alcohol
Mixer 10% by weight and other additives such as lubricant, defoamer, polyethylene wax, pH adjuster, etc.
The aqueous ink composition was prepared by kneading the mixture sufficiently, and the aqueous ink composition was used.
The desired printed pattern layer was formed on the back surface of the biaxially stretched polypropylene film of m. Next, an aqueous ethyleneimine-based anchor coat material was used on the back surface of the biaxially stretched polypropylene film including the printed pattern layer, and this was gravure coated.
An anchor-coating agent layer of about 1 g / m ² (dry state) was formed by application in a coating method, and thereafter, an ethylene-methacrylic acid copolymer was extruded on the surface of the anchoring-coating agent layer. Meanwhile, a 25 μm-thick unstretched polypropylene film having an aluminum vapor-deposited film was extruded and laminated with the aluminum vapor-deposited film surface facing the anchor coating agent layer surface to produce a laminated material according to the present invention. . Next, the laminated material produced as described above is overlaid with its unstretched polypropylene film surface facing each other, and then the three peripheral edges are heat-sealed to form a three-way seal type packaging. Bags were manufactured. Next, a snack is filled in the packaging bag manufactured as described above, and then the opening is heat-sealed.
To form a sealed product, thereby producing a packaged product. The above packaged product was subjected to normal storage and distribution, and then, after opening the packaged product and eating the contents, there was no solvent odor from the laminated material constituting the packaging bag.

Example 3 As in Example 1, first, 15% by weight of a urethane acrylic emulsion composed of a water-soluble acrylic resin and a water-soluble polyurethane resin, 15% by weight of a pigment (titanium oxide), 50% by weight of water, 10% by weight of ethanol, 10% by weight of N-propyl alcohol, and other additives such as a lubricant, an antifoaming agent, a polyethylene wax, and a pH adjuster are sufficiently kneaded with a mixer to obtain an aqueous solution. An ink composition was prepared, and a biaxially stretched polyethylene terephthalate having a thickness of 12 μm was prepared by gravure printing using the aqueous ink composition.
A desired printed pattern layer was formed on the back surface of the film. Next, on the back surface of the biaxially stretched polyethylene terephthalate film including the print pattern layer, an ultraviolet curable acrylic adhesive mainly composed of an acrylic monomer is used, and this is applied by a gravure coat method. To form a UV-curable solventless adhesive layer of about 3 g / m ² (dry state), and then superimpose a 15 μm-thick biaxially stretched nylon film on the adhesive layer surface. The laminate was irradiated with ultraviolet rays. Next, on the surface of the biaxially stretched nylon film, similarly to the above, an ultraviolet curable acrylic adhesive mainly composed of an acrylic monomer was used, and this was applied by a gravure coat method. A UV-curable solventless adhesive layer of about 3 g / m ² (dry state) is formed, and then a 60 μm-thick unstretched polypropylene film is overlaid on the adhesive layer surface, and then irradiated with ultraviolet rays. Then, the laminated material according to the present invention was manufactured. Next, the laminated material produced as described above is overlaid with its unstretched polypropylene film surface facing each other, and then the three peripheral edges are heat-sealed to form a three-way seal type packaging. Bags were manufactured. Next, the retort product is filled in the packaging bag manufactured as described above, and thereafter, the opening is heat-sealed to form an upper end seal portion. Retort packaging products were manufactured. The above packaged product was subjected to normal storage and distribution, and then, after opening the packaged product and eating the contents, there was no solvent odor from the laminated material constituting the packaging bag.

[0037]

As apparent from the above description, according to the present invention, a printed pattern layer, an adhesive layer and the like constituting a packaging material are formed by using an aqueous ink composition or an aqueous adhesive. First, at least, a base film, a printed pattern layer of an aqueous ink composition provided on the front surface or the back surface or both surfaces of the base film, an aqueous adhesive layer of an aqueous adhesive, an aqueous anchor layer A solvent layer or a solventless adhesive layer with a solventless adhesive;
Laminated resin layers in order to produce a laminated material,
Using the laminated material, the heat-sealing resin layers are superposed on each other so that the surfaces thereof face each other, and the peripheral edge thereof is heat-sealed to form a seal portion, thereby forming a packaging bag. Manufacturing, thus filling and packaging the contents in the packaging bag to produce a packaged product,
For example, after printing, pollution problems such as air pollution due to solvents that are dried and released, problems with disaster prevention for handling flammable solvents, problems with the working environment where solvents are used, problems with resource saving, effects on contents, To improve and improve various problems such as high cost and other economic problems, and to be able to manufacture packaging materials, packaging bags, etc., in which the residual organic solvent has no influence on the contents. Can be done.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a layer structure of a laminated material according to the present invention.

FIG. 2 is a schematic sectional view showing a layer configuration of a laminated material according to the present invention.

FIG. 3 is a schematic sectional view showing a layer structure of a laminated material according to the present invention.

FIG. 4 is a schematic sectional view showing a layer configuration of a laminated material according to the present invention.

FIG. 5 is a schematic sectional view showing a layer structure of a laminated material according to the present invention.

FIG. 6 is a schematic perspective view showing a configuration of a packaging bag according to the present invention using the laminated material shown in FIG.

7 is a schematic plan view showing an example of a packaged product in which contents are filled and packed in the packaging bag shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base film 2 Printed pattern layer 2a Printed pattern layer 3 Aqueous adhesive layer 3a Aqueous anchor coating agent layer 3b Solventless adhesive layer 4 Heat-sealing resin layer 5 Overcoat Layer 5a Resin film 6 Seal part 7 Contents 8 Upper seal part A Laminated material B Laminated material C Laminated material D Laminated material E Laminated material F Packaging bag G Packaging product

Claims (6)

[Claims] At least a base film, a printed pattern layer made of an aqueous ink composition provided on the front surface or back surface or both surfaces of the base film, an aqueous adhesive layer made of an aqueous adhesive, and an aqueous anchor A laminated material characterized by sequentially laminating an aqueous anchor coat layer made of a heat-sensitive agent or a solvent-free adhesive layer made of a solvent-free adhesive, and a heat-sealing resin layer. 2. Overcoating of a base film with an aqueous resin composition containing a resin as a main component of a vehicle.
The laminated material according to claim 1, wherein a laminated layer is provided. 3. An aqueous adhesive layer comprising an aqueous adhesive, an aqueous anchor coat agent comprising an aqueous anchor coat agent, or a solventless type comprising a solventless adhesive layer on a base film. The laminated material according to claim 1, wherein a resin film is laminated via an adhesive layer. 4. At least a base film, a printed pattern layer made of an aqueous ink composition provided on the front surface or back surface or both surfaces of the base film, an aqueous adhesive layer made of an aqueous adhesive, and an aqueous anchor layer. Using a laminated material obtained by sequentially laminating an aqueous anchor coat agent layer made of a heat-sensitive agent or a solventless adhesive layer made of a solventless adhesive and a heat-sealing resin layer. A packaging bag, characterized in that the heat-sealing resin layer of (1) is superposed facing each other and a seal portion is provided at a peripheral end thereof. 5. An overcoat by an aqueous resin composition containing a resin as a main component of a vehicle, on a base film.
The packaging bag according to claim 4, further comprising a protective layer. 6. An aqueous adhesive layer using an aqueous adhesive, an aqueous anchor coat agent using an aqueous anchor coat agent, or a solventless adhesive using a solventless adhesive on the base film. The packaging bag according to claim 4, wherein a resin film is laminated via an agent layer.