JP6506007B2 - Non-adhesive film for food, method for producing the non-adhesive film, method for preventing or reducing adhesion of food to non-adhesive film for food, and food packaging container - Google Patents

Description

  The present invention relates to a non-adhesive film for food having a non-adhesive layer used for food containing water and sugar.

Conventionally, in a packaging container for packaging a food containing water or sugar such as pudding, caramel, castella, cake, sweet potato, dumpling, sweet potato, natto, etc., when these foods are sealed in the packaging container, the inside of the packaging container There is a problem that these foods adhere.
In order to give non-adhesiveness to the inside of such a packaging container, a plastic sheet is embossed or a film with many capillaries on the surface like non-woven fabric is used to reduce the contact area with food. Those which reduce adhesion and those which make adhesion difficult by coating a release oil, silicone resin or the like have been devised.

  Patent Document 1 discloses a food package in which the emboss film can be used to further suppress the shape loss, peeling, and peeling of the package by making the product into an air-filled state. In addition, it is necessary to enclose the gas displacement sealing or the oxygen absorbent together in order to make the gas state into air. Patent Document 2 discloses a release film having a continuous layer mainly composed of silicon oxide as a release layer by plasma-enhanced chemical vapor deposition, but deposition processing on the film is essential, and another process is disclosed. Become. Although the mold release oil for confectionery for preventing adhesion with a confectionery and its packaging material is disclosed in patent document 3, although it is a method suitable for gelatin confectionery, such as gummy candy, candy, etc. Peelability is not sufficient for those containing sugar or sugar. Although Patent Document 4 discloses a packaging material having water repellency and releasability of the contents having a resin layer to which spherical silicon is added as the innermost layer, the innermost layer is prepared by mixing spherical silicon with a polyethylene resin, It is a coextruded film, and the thickness of the layer is as thick as 40 to 60 μm. Although the mold release film which coated the silicone resin which contained silicon type fine powder in the plastic film is disclosed in patent document 5, silicon type fine powder aggregates and uniform dispersibility is not obtained. Problems such as unstable exposure of silicon to the surface, large amount of organic solvent, and exposure of the substrate to high temperature when curing the mold release agent may cause problems such as pinholes .

Unexamined-Japanese-Patent No. 2007-308191 JP-A-8-164969 Japanese Patent Application Laid-Open No. 7-39304 JP-A-8-337267 Japanese Examined Patent Publication 6-2393

  The present invention does not require steps such as embossing or vapor deposition for imparting non-adhesiveness, and has sufficient non-adhesiveness to an article requiring non-adhesiveness even if the non-adhesive layer is thin, An object of the present invention is to provide a non-adhesive film for food which can be easily manufactured at low cost.

  The present inventors have found that the above object can be achieved by using a non-adhesive film for food wherein the anchor coat layer and the non-adhesive layer are laminated in this order on at least one side of the substrate layer. It came to complete.

That is, the present invention
(1) A method for producing a non-adhesive film for food for encapsulation, wherein an anchor coat layer and a non-adhesion layer are laminated in this order on at least one side of a base material layer, in a packaging container,
The anchor coat layer is coated with an anchor coat agent containing acrylic resin beads and one selected from acrylic resins or polyester resins having a glass transition point (Tg) of 5 ° C. or more and 50 ° C. or less. Layer formed by
The non-adhesive layer is a layer formed by applying a coating liquid containing hydrophobized inorganic particles and alcohol and / or water,
The substrate layer is at least one selected from paper, aluminum foil, and plastic film or sheet,
The packaging container is at least one selected from plastic containers, plastic bags, metal containers, paper containers, paper bags, and glass containers,
Forming an anchor coat layer;
The step of forming a non-adhesion layer is a step of forming in this order ,
And the said process of forming the said anchor coat layer is a coating process by gravure using one unit of a multicolor gravure printer,
Wherein said step of forming a non-adherent layer is a non-for food for inclusion to be encapsulated into a packaging container, characterized in that the coating is a process by gravure printing using a different one unit of the multi-color gravure printing machine Method for producing adhesive film,
(2) The hydrophobized inorganic particles are at least one selected from those obtained by hydrophobizing silica, talc, sericite, mica, kaolin, or a mixture thereof (1) The manufacturing method of the non-adhesive film for food for enclosures which is included in the packing container of statement.
It is.

  According to the present invention, steps such as embossing and deposition processing for imparting non-adhesion are unnecessary, and even if the non-adhesion layer is thin, it has sufficient non-adhesion to an article requiring non-adhesion. And a non-adhesive film for food wherein an anchor coat layer and a non-adhesive layer are laminated in this order on at least one side of a substrate layer, which can be easily manufactured at low cost, a method for producing the non-adhesive film, food A method of preventing or reducing adhesion to a non-stick film for food and a food packaging container containing the non-stick film are provided.

It is a schematic sectional drawing which shows the example about the non-adhesive film of this invention. It is a schematic sectional drawing which shows the example about the non-adhesive film of this invention. It is a schematic sectional drawing which shows the example about the non-adhesive film of this invention. It is a schematic sectional drawing which shows the example about the non-adhesive film of this invention. It is a schematic sectional drawing which shows the example about the non-adhesive film of this invention.

  Hereinafter, modes for carrying out the present invention will be described in detail. The present embodiment is only one mode for carrying out the present invention, and the present invention is not limited to the present embodiment, and various modifications and embodiments can be made without departing from the scope of the present invention. Is possible.

  The non-adhesive film for food of the present invention (hereinafter, also simply referred to as "non-adhesive film") is a food for which an anchor coat layer and a non-adhesive layer are laminated in this order on at least one side of a substrate layer. It is preferable that it is a non-adhesive film, The said anchor coat layer is a layer containing an uneven | corrugated imparting agent, and the said non-adhesive layer is a layer containing the inorganic particle by which the hydrophobization treatment was carried out.

  The anchor coat layer and the non-adhesion layer are applied to the base material layer by a known method such as printing or application, spraying, immersion or the like to form an anchor coat layer or a non-adhesion layer. The coating method may, for example, be a silk screen printing method, a gravure printing method, an offset printing method, a flexo printing method, a roller coater method, a brush coating method, a spray method or a knife jet coater method. Among them, a gravure printing method, a flexographic printing method or a silk screen printing method is preferably used in view of high quality and productivity, and a gravure printing method using a multicolor gravure printing machine is particularly preferable. More specifically, after the base material layer is formed by the lamination method described later, the anchor coat layer and the non-adhesion layer may be formed in this order by the gravure printing method, but the base material layer to be the base After forming an anchor coat layer and a non-adhesion layer by the gravure printing method in one side of this, another base material layer may be formed in the other side different from this by the lamination method mentioned later. The anchor coat layer and the nonadherent layer may be provided on both sides of the substrate layer.

It is preferable that the formation of the anchor coat layer and the non-adhesion layer is performed by a gravure printing method using one or more units of a multicolor gravure printing machine. Since an anchor coat layer and a non-adhesion layer can be made into a multilayer by this, control of the adhesiveness and non-adhesion property of a substrate layer and a non-adhesion layer can be performed easily.
The adhesion of the nonadherent layer means whether or not the surface having the nonadherent layer and the part or whole surface of the food are easily attached. The nonadherent control means that the adhesion between the surface having the nonadherent layer and the part or whole surface of the food can be controlled. In the present specification, the non-adhesive layer is meant to be interpreted as a surface having the non-adhesive layer.

  The hydrophobized inorganic particles are preferably at least one selected from silica, talc, sericite, mica, kaolin, or a mixture thereof subjected to hydrophobization. Among them, hydrophobically treated silica and talc (hereinafter, also simply referred to as “treated silica” and “treated talc”, respectively) are more preferable. The non-adhesion layer is preferably formed of a coating liquid having a coating suitability including hydrophobicized inorganic particles.

  The hydrophobic treatment of the inorganic particles is not particularly limited as long as a hydrophobic group can be introduced into the inorganic particles, but from the viewpoint of water repellency, cost and safety, silane coupling treatment, silicone treatment and silazane treatment are preferable. A well-known silane coupling agent is used for a silane coupling process, and the process to an inorganic filler, such as a silica and a talc, the process by a dry method or a wet method is preferable. In general, a silane coupling agent is a silane compound having two different functional groups of an organic functional group and an alkoxy group in one molecule, and aminopropylmethoxysilane, aminopropyltriethoxysilane, ureidopropyltriethoxysilane, N- Aminosilane coupling agents such as phenylaminopropyltrimethoxysilane, N-2 (aminoethyl) aminopropyltrimethoxysilane, glycidoxypropyltrimethoxysilane, glycidoxypropyltriethoxysilane, glycidoxypropylmethyldiethoxy Epoxy silane coupling agents such as silane, glycidyl butyl trimethoxysilane, (3,4-epoxycyclohexyl) ethyltrimethoxysilane, mercaptopropyltrimethoxysilane, mercaptopropyl trie Mercaptosilane-based coupling agents such as toxisilane, methyltrimethoxysilane, octadecyltrimethoxysilane, phenyltrimethoxysilane, methacryloxypropyltrimethoxysilane, silane-based coupling agents such as imidazole silane and triazine silane, and the like are used. For example, a dry method is known in which inorganic particles are stirred at high speed with a stirrer, and a stock solution of a silane compound is uniformly dispersed and treated there. In a wet method, inorganic particles are immersed in a dilute solution of silane. Methods of processing are known. For the silicone treatment, silicone oil which is liquid at normal temperature is used. The silicone oil is not particularly limited as long as it has a polysiloxane structure, but dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane and the like are more preferable. The treatment is preferably carried out using 1 to 5% by weight of silicone oil, based on talc. Organosilazanes such as hexamethyldisilazane (HMDS), hexaphenyldisilazane, dimethylaminotrimethylsilane, trisilazane, cyclotrisilazane, 1,1,3,3,5,5-hexamethylcyclotrisilazane for silazane treatment The compounds are preferably used, and hexamethyldisilazane is more preferably used. For example, a method of spraying hexamethyldisilazane in a state in which inorganic particles such as silica and talc are made to flow, silica, talc and the like in an organic solvent such as alcohol and toluene, and further hexamethyldisilazane and water After the addition, it can be produced by a method of evaporating and drying water and an organic solvent with an evaporator. More specifically, HMDS-treated inorganic particles are prepared by placing inorganic particles in a Henschel mixer, spraying water and HMDS while stirring under a nitrogen atmosphere, heating and cooling, and crushing with a ball mill. it can.

  Silica (silicon dioxide) is abundant in natural products, synthetic products, or crystalline or amorphous, among which synthetic amorphous silica is preferred. Synthetic amorphous silica is roughly classified into wet method silica and dry method silica, but it has been subjected to hydrophobic treatment such as silane coupling treatment, silicone treatment (siloxane treatment), silazane treatment or composite treatment of these. For example. Examples of commercially available products include SIPERNAT series (manufactured by EVONIK Co., Ltd.), AEROSIL series (manufactured by Nippon Aerosil Co., Ltd.), WACKER HDK series (manufactured by Asahi Kasei Wacker Silicone Co., Ltd.), Leoroseal (manufactured by Tokuyama Co., Ltd.) and the like.

  Talc is a mineral consisting of magnesium hydroxide and silicate and is a kind of clay mineral. Talc itself, although untreated, has some degree of hydrophobicity, but is not sufficient for the water repellency and nonadhesion of the object of the present invention, and it is necessary to carry out a hydrophobic treatment. Hydrophobization treatment may be general, and may be treated with silica treatment, silicone treatment (siloxane treatment), silazane treatment, resin treatment, fatty acid treatment, silane coupling treatment, titanate treatment, or a composite treatment of these. For example. The treatment amount is preferably 0.01 to 50% by weight, and more preferably 0.05 to 30% by weight with respect to talc. If it is less than 0.01% by weight, the hydrophobicity is not sufficient, and if it is more than 50% by weight, it not only does not contribute to the treatment of talc but it becomes an impurity to inhibit water repellency. For example, the treated talc is obtained by spraying a 10% solution of silicone oil in methylene chloride to the talc so as to be 1 to 5% by weight of the silicone oil and calcining at 100 ° C. for 2 hours.

  The average particle diameter of the hydrophobized inorganic particles is preferably 50 μm or less, more preferably in the range of 0.001 to 50 μm, and further preferably in the range of 0.003 to 30 μm. preferable. When the particle size is 0.001 μm or less, the water repellency is hardly expressed, and when the particle size is larger than 50 μm, the abrasion resistance is inferior. The average particle size referred to here is a measured value by a laser method (manufactured by MICROTRAC 9320 × 100 Honeywell).

In the case of treated silica, it is preferably 50 μm or less, more preferably 30 μm or less.
In the case of treated talc, it is preferably 20 μm or less, more preferably 10 μm or less.

  Furthermore, it is preferable that the film thickness of the non-adhesion layer formed by coating the coating liquid containing the said hydrophobic-treated inorganic particle is 0.01-50 micrometers, and it is 0.01-30 micrometers. Is more preferred. If the film thickness is less than 0.01 μm, it is difficult to express water repellency, and if the film thickness is more than 50 μm, it is difficult to prepare by the gravure printing method.

  The coating liquid preferably contains hydrophobicized inorganic particles and alcohol and / or water. In particular, water, methanol, ethanol, isopropyl alcohol, normal propanol and the like are preferable from the viewpoint of water repellency. These may be used alone or in combination of two or more.

An additive can be used for the said coating liquid as needed. For example, viscosity modifiers, dispersants, antiblocking agents, waxes, fillers and the like can be mentioned. As viscosity modifiers, inorganic compounds such as silica, resin-based thickeners such as polyamide, as dispersants, polymeric resin dispersants, surfactants such as anionic, nonionic, cationic and amphoteric, Resin beads, such as a urethane resin, an acrylic resin, a nitrile resin, a polystyrene resin, or these mixtures etc. are mentioned. Antiblocking agents include inorganic pigments such as calcium carbonate, barium sulfate, silica, mica, montmorillonite, smectite, zeolite, kaolinite and the like. Examples of the wax include polyethylene, polypropylene, microcrystalline, carnauba, polytetrafluoroethylene and the like. As the filler, titanium oxide, calcium carbonate, barium sulfate, talc, zinc oxide, silica, mica, montmorillonite, smectite, zeolite, inorganic pigments such as kaolinite, polyethylene, polypropylene, microcrystalline, carnauba, polytetrafluoroethylene etc. Resin beads such as waxes, urethane resins, acrylic resins, nitrile resins and polystyrene resins, or mixtures thereof. The average particle size of the filler is preferably in the range of 0.01 to 50 μm.
The additive amount of the additive can be used in the range not to inhibit the water repellency, and the total amount of the additive is preferably 80% by weight or less, more preferably 70% by weight or less based on the hydrophobically treated inorganic particles. If the additive is more than 80% by weight with respect to the hydrophobized inorganic particles, the water repellency is reduced.

  The amount of hydrophobized inorganic particles in the coating liquid is preferably 0.1 to 50% by weight, and more preferably 1 to 40% by weight, in the coating liquid. More preferably, it is in weight percent. If the amount is less than 0.1% by weight, the water repellence of the non-adhesion layer coated with the coating liquid is difficult to be expressed, and if it is more than 50% by weight, the fluidity as the coating liquid is inferior and coating by the gravure printing method Not suitable for

In the non-adhesion layer formed by applying the coating solution, the coating amount (UC) of the coating solution is 0.02 g / m ² ≦ UC ≦ 1.5 g / m ² in solid content. It is preferable that 0.1 g / m ² ≦ UC ≦ 1.0 g / m ² is more preferable. When the amount is less than 0.02 g / m ² , the water repellency is difficult to be expressed, and when the amount is more than 1.5 g / m ² , the abrasion resistance of the non-adhesion layer is inferior.

  The anchor coat layer is preferably formed of an anchor coat agent having a coating aptitude containing an unevenness imparting agent.

  By forming an anchor coat layer containing a concavo-convex agent, a concavo-convex layer is provided, which not only contributes to the improvement of the adhesion between the base material layer and the non-adherent layer, but also on the provided concavo-convex layer Furthermore, by laminating the non-adhesive layer, the non-adhesiveness has a great effect.

  The said unevenness imparting agent is titanium oxide, calcium carbonate, barium sulfate, talc, zinc oxide, silica, mica, montmorillonite, smectite, zeolite, inorganic pigments such as kaolinite, polyethylene, polypropylene, microcrystalline, carnauba, polytetrafluoroethylene It is preferable that it is at least one selected from waxes such as, urethane resins, acrylic resins, nitrile resins, resins such as polystyrene resins, or mixtures thereof.

  Furthermore, it is preferable that the said concavo-convex imparting agent is powdery or bead-like. Although resin beads are particularly preferable, any resin beads may be used as long as they can be mixed as an anchor coating agent and can maintain fluidity.

  The average particle diameter of the unevenness imparting agent is preferably larger than 0.1 μm, more preferably in the range of 0.3 to 50 μm, and further preferably in the range of 0.8 to 30 μm. preferable. When the particle size is 0.1 μm or less, the water repellency is difficult to be expressed, and when it is larger than 50 μm, the coating suitability is poor.

  The anchor coating agent preferably further contains a resin. The content ratio of the resin and the unevenness imparting agent is preferably 10/90 to 99.9 / 0.1 in the weight ratio of the resin / the unevenness imparting agent. If the amount of the resin is less than 10, the adhesion to the substrate layer is poor, and if the amount of the unevenness imparting agent is less than 0.1, the water repellence is hardly expressed.

  The anchor coat layer formed by applying the anchor coat agent containing the said resin and an uneven | corrugated imparting agent becomes uneven | corrugated shape in the cross section. By being uneven, good water repellency and non-adhesion can be obtained.

  The resin may be any resin as long as good adhesiveness can be obtained. For example, shellacs, rosins, rosin modified maleic resin, rosin modified phenolic resin, cotton nitrate, cotton acetate, cellulose acetate, cellulose acetyl propionate, cellulose Acetyl butyrate, chlorinated rubber, cyclized rubber, vinyl chloride, vinylidene chloride, polyamide resin, vinyl chloride-vinyl acetate copolymer, polyester resin, ketone resin, butyral resin, chlorinated polypropylene resin, chlorinated polyethylene resin, chlorinated Thermoplastic resins such as ethylene vinyl acetate resin, ethylene vinyl acetate resin, acrylic resin, urethane resin, ethylene-vinyl alcohol resin, styrene maleic acid resin, casein, alkyd resin, etc. may be mentioned, and one or more of these may be used in combination It may be use. Properties of these resins dissolved in a solvent, dissolved in water, or dispersed in water, such as acrylic emulsion, urethane emulsion, polyvinyl alcohol resin, ethylene-vinyl alcohol emulsion, polypropylene emulsion, etc. Can be mentioned.

  The anchor coating agent preferably further contains a solvent, and the resin is dissolved or dispersed in the solvent.

  The solvent may be an organic solvent type or an aqueous type generally used in gravure printing. For example, organic solvents and / or water can be mentioned. Examples of the organic solvent include aromatic hydrocarbon solvents such as toluene and xylene, aliphatic hydrocarbon solvents such as hexane, cyclohexane, methylcyclohexane and ethylcyclohexane, methanol, ethanol, isopropyl alcohol (IPA) and normal propyl alcohol Alcohol solvents such as 1-butanol, 2-butanol, isobutanol, tert-butanol, ethyl acetate, n-propyl acetate, isopropyl acetate, butyl acetate, butyl acetate, isobutyl acetate, sec-butyl acetate, esters of tert-butyl acetate, etc. Solvents, acetone, methyl ethyl ketone (MEK), methyl isobutyl ketone, ketone solvents such as cyclohexanone, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, Glycol ether solvents such as glycol dimethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether and the like, and their esterified products are mentioned. Acetates selected from the group consisting of ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol Such as chromatography monoethyl ether acetate. Any resin may be used as long as it can dissolve the resin used for the anchor coating agent.

  A hardener can also be added to the anchor coating agent as required. For example, tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, 4,4'-dicyclohexyl diisocyanate and trimethylolpropane thereof Polyisocyanate-based curing agents such as trimers, isocyanurate bodies, burette bodies, modified bodies such as allophanate bodies and the like can be mentioned, and these can be used alone or in combination of two or more.

  In the non-adhesive film of the present invention, the non-adhesive layer is non-adhesive to the food when enclosed in a packaging container such that the non-adhesive layer of the non-adhesive film is in contact with the food. Is an indicator of Here, that the non-adhesive layer of the non-adhesive film is in contact with the food means that the surface of the non-adhesive film having the non-adhesive layer is in contact with part or whole surface of the food.

  Furthermore, when a non-adhesion layer is formed by gravure printing, the 100% dot area ratio may lower the area ratio if the non-adhesion is too high or the demand for the non-adhesion to food, or the plate By adjusting the depth or adjusting the dilution rate, the adhesion between the non-adhesive film and the food can be easily controlled. Furthermore, in addition to adjustment of dot area ratio and plate depth, letters (eg, maker name, brand name, product name, symbols etc.) and patterns (eg, marks, marks, designed designs etc.) etc. are "dropped" By forming (by forming a portion without a non-adhering layer), the "punched" portion adheres to the food, and while maintaining appropriate adhesion, there is also an effect that characters, patterns, etc. stand out.

  Said food is dumplings, rice dumplings, Chinese buns, sweet potatoes, dumplings, puddings, caramel, castellas, short cakes, cheese cakes, cheese cakes, hot cakes, roll cakes, madeleine, berm couven, financiers, muffins, waffles, mont blanc, cream puffs, Donut, chocolate, caramel, starch syrup, cream, jam, butter, margarine, ice cream, yogurt, jelly, honey, black nectar, candy, gummy, gelatin, tartlet, pie, strawberry, herb bowl, rice ball, daifuku, Zenzai, anmitsu, Honey Beans, Yimochi, Uiro, Chimaki, Bran Head, Dorayaki, Doto-yaki, Natto, Noodles, Bread, Steamed Bread, Sandwich, Pizza, Cheese, Cream Cheese, Cooked Rice, Sushi, Beef Bowl, Pork Bowl, Chicken Bowl, Chicken Bowl, Cutlet Bowl, Chinese Bowl , Steamed rice, miso, takoyaki, okonomiyaki, Meat, yakitori, teriyaki, grilled fish, simmered fish, simmered chicken, spaghetti, omelet, omelet rice, omelet, baked egg, scrambled egg, boiled egg, hot spring egg, gratin, doria, risotto, curry, stew, meat sauce, hamburger, Meatball, wine sausage, frankfurt, ham, bacon, wonton, spring roll, mapo tofu, shrimp chili, sweet and sour pork, chopped pork, scallop meat, crab meat, crab ball, socked oystercatcher, kimchi, chijimi, potato salad, egg salad, macaroni salad , Vermicelli salad, mayonnaise, soy sauce, sauce, ketchup, mustard, chili oil, miso pickling, pickled pickled horseradish, pickled wasabi, pickled pickled vegetables, pickled pickled pickled vegetables, salted pickles, salted fish, salted mackerel, seaweed, seaweed, seaweed, ramen etc. At least one selected from those containing moisture and sugar such as It is preferred.

  The packaging container is preferably at least one selected from a plastic container, a plastic bag, a metal container, a paper container, a paper bag, and a glass container. Among them, any may be used as long as it is used for food packaging applications, and the shape is not particularly limited. More preferred is soft packaging such as a plastic bag.

  The base material layer of the present invention is preferably at least one selected from paper, aluminum foil, plastic film or sheet. The base material layer may be formed by laminating a thermoplastic resin or the like by a method such as dry lamination, non-solvent lamination or extrusion lamination, or a method of bonding through an adhesive or the like. It may be one. The thickness of the substrate layer is not particularly limited as long as there is no problem in printability, winding-up ability and the like, but it is preferably 5 to 300 μm, and more preferably 6 to 250 μm.

  The said paper should just be suitable for printing, and publication printing paper, packaging printing paper, paperboard printing paper etc. are mentioned. Examples of the publication printing paper include uncoated paper such as high-quality paper and gravure paper, and coated paper such as art paper, coated paper, and finely coated paper. Examples of the packaging printing paper include pure white roll paper and bleached kraft paper. Moreover, as paperboard printing paper, coated or uncoated white balls, coated or uncoated Manila balls, polyethylene coated paper obtained by extruding polyethylene, etc. may be mentioned. Furthermore, synthetic paper such as polyethylene or polypropylene may be used.

  Examples of the plastic film include polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyolefin films such as polyethylene, polypropylene and ethylene-vinyl acetate, polystyrene films, alcohols such as ethylene-vinyl alcohol and polyvinyl alcohol -Based film, polyamide film or barrier film with barrier layer interposed in the middle, polycarbonate film, polyacrylonitrile film, polyimide film, cellophane, moistureproof cellophane, PET film or polyamide film provided with a deposited layer of alumina, silica or the like Vapor-deposited polyester film or transparent vapor-deposited polyamide film, polyvinylidene chloride resin, polyvinyl chloride Alcohol resins, polyacrylic acid resins, polyurethane resins, and various coating films coated with an isocyanate resin. These may be either stretched or unstretched, and one or more may be laminated. An appropriate one can be selected in consideration of mechanical strength and dimensional stability. Further, in order to improve the adhesion, it is possible to select one which has been subjected to corona treatment, low temperature plasma treatment, flame treatment, solvent treatment, coating treatment or the like in advance.

  Examples of plastic films that can be used for the dry lamination and non-solvent lamination include polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyolefin films such as polyethylene, polypropylene and ethylene-vinyl acetate, polystyrene film, ethylene -An alcohol film such as vinyl alcohol and polyvinyl alcohol, a barrier film such as polyamide film or barrier film, polycarbonate film, polycarbonate film, polyacrylonitrile film, polyimide film, cellophane, moistureproof cellophane, PET film or polyamide film to alumina or the like Transparent vapor deposited polyester film or transparent vapor deposited layer provided with silica Polyamide film, PET film, polyamide film, polyethylene film or aluminum vapor deposited film of aluminum is vapor-deposited polypropylene film, polyvinylidene chloride resins, polyvinyl alcohol resins, and various coating films and coated polyacrylic acid resin. These may be either stretched or unstretched, and one type or two or more types may be laminated. An appropriate one can be selected in consideration of mechanical strength and dimensional stability. In addition to plastic films, paper, processed paper, aluminum foil, etc. can also be used.

  Examples of resins that can be used for the extrusion laminate include polyethylene resins such as low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), polypropylene resin, ethylene-vinyl acetate copolymer, ionomer resin, Ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-methyl methacrylate copolymer, ethylene-propylene copolymer, Examples thereof include thermoplastic resins such as methylpentene polymers, acid-modified polyolefin resins obtained by modifying polyethylene and polypropylene with maleic acid and fumaric acid, and polystyrene resins. One or two or more of these resins may be laminated.

  A printing ink layer (hereinafter, also simply referred to as "printing ink") can be coated on the base layer in one or more colors, and the non-adhered layer opposite surface or between the base layer and the nonadherent layer Can also be provided. By applying a printing ink layer to the substrate layer, for example, company name, logo, character, product name, contents, ingredient indication, notification of application method and campaign, eating method and using method, date, origin , And information such as winnings can be given.

  In addition, the space between the thermoplastic resin layer and the anchor coat layer does not have to be plain, and one or more printing ink layers can be coated on the thermoplastic resin layer as well.

  A normal gravure ink can be used as the printing ink layer, and can be appropriately selected according to the base material layer. From the viewpoint of printability and versatility, gravure inks such as urethane resin, vinyl chloride-vinyl acetate copolymer resin, nitrification cotton, polyamide resin, acrylic resin, and chlorinated polypropylene resin are preferable, and one or two of these resins may be used. The gravure ink which combined the kind or more may be sufficient. Moreover, when using two or more colors of gravure ink, it is not necessary to be the ink of the same resin system, and the ink of another resin system can also be used suitably.

  As commercially available products, LG-NT, TPH, VESTA, LRC-NT, KCNT, SYNA-S, LAMREK (all manufactured by Tokyo Ink Co., Ltd.) and the like can be used.

  Each composition such as the coating solution for the non-adhesion layer, printing ink, anchor coating agent uniformly dissolves or disperses the pigment, resin, hydrophobic treated inorganic particles, unevenness imparting agent, various additives and the like in the solvent. Thus, they can be produced by known methods. Dissolution or dispersion can be performed with various stirrers or dispersions such as dissolver, roll mill, ball mill, bead mill, sand mill, attritor, paint shaker, agitator, Henschel mixer, colloid mill, pearl mill, ultrasonic homogenizer, wet jet mill, kneader, homo mixer, etc. Machine can be used. These devices may be used alone or in combination of two or more. When air bubbles or coarse particles are contained in each composition, it is preferable to remove them using a known filter, centrifuge or the like in order to reduce printability and print quality.

  The viscosity of each of the above compositions is not particularly limited as long as it does not affect printing. It is preferable that it is 10-1,000 mPa * s at 25 degreeC, when the manufacture aptitude of each composition, handling, etc. are considered.

  The viscosity can be measured using a commercially available viscometer such as a Brookfield viscometer.

  Each composition described above can be coated as it is, but depending on the coating conditions and the coating effect, the desired viscosity can be obtained by diluting with a dilution solvent with Zahn cup # 3 (manufactured by Rikasha Co., Ltd.) It can be adjusted to use. The viscosity in this case is preferably 10 to 40 seconds at 25 ° C.

  The dilution solvent may be any one as long as it can be used by adjusting the viscosity of each composition, and examples thereof include organic solvents and water, and commercially available ones can also be used. Examples of commercially available products include TA 52 (alcohol solvents), PU 515 (non-toluene solvents), SL 9155 (non-toluene solvents) (all manufactured by Tokyo Ink Co., Ltd.) and the like.

  In the method for producing a non-adhesive film for food in which the non-adhesive layer of the present invention is laminated, an anchor coat layer and a non-adhesive layer are laminated in this order on at least one side of a substrate layer, It is preferable to include a step of applying an agent to form the anchor coat layer, and a step of applying a coating liquid containing hydrophobized inorganic particles to form the non-adhesive layer.

  The step of forming the anchor coat layer and the non-adhesion layer is preferably a known printing or coating, spraying, dipping, etc. step, and more preferably a coating step. Examples of the application process include processes such as silk screen printing, gravure printing, offset printing, flexo printing, roller coater, brush coating, spray, knife jet coater and the like. Among them, a coating process by gravure printing, flexographic printing or silk screen printing is preferably used in view of high quality and productivity, and in particular, a coating process by gravure printing using a multicolor gravure printing machine is preferable. It apply | coats to the said base material layer by these formation processes, and an anchor-coat layer and a non-adhesion layer are laminated | stacked in this order, and it is set as a non-adherent film. More specifically, after the step of forming the base layer laminated by the above-described laminating method, the anchor coat layer and the non-adhesion layer are formed in this order by gravure printing to produce a non-adhesive film. After the step of forming the anchor coat layer and the non-adherent layer by gravure printing on one surface of the base substrate layer, another substrate layer may be formed by the above-described lamination method. The non-adhesive film may be produced by the step of further laminating Moreover, you may manufacture a non-adhesive film by the process which can form a non-adhesion layer on both surfaces of a base material layer.

  By these steps, the anchor coat layer and the non-adhesion layer can be formed in multiple layers, so that the adhesion and non-adhesion properties of the base material layer and the non-adhesion layer can be easily controlled. That is, the non-adherent film of the present invention has a non-adhesion film formed by the conventional embossing and plasma chemical vapor deposition methods, which is a separate step in the preparation of the non-adhesion layer. Since it becomes a formation process by gravure printing using a multicolor gravure printer, printing ink layer, anchor coat layer, non-adhesion layer can be continuously formed on the substrate layer in line, and a series of flows (1 pass) Can be easily produced at low cost. Of course, there are cases where continuous formation can not be performed inline due to the restrictions of the specifications of the gravure printing machine, the printing environment, equipment, etc. In this case, the formation can be performed offline (outline). Moreover, it is preferable to apply | coat an anchor coat layer only to the part which provides a nonadhesion layer.

  The present invention can further provide a method for preventing or reducing adhesion of the food to a non-stick film for food when the food is sealed in a packaging container. That is, the step of cutting the non-adhesive film for food, the step of mounting the non-adhesive layer of the cut non-adhesive film so as to be in contact with the food, and the mounting such that the non-adhesive layer is in contact It is preferable to include the process of containing the non-adhesive film and the said foodstuff in a packaging container, and the process of sealing the opening part of a packaging container. Furthermore, it is more preferable that the non-adhesive layer of the non-adhesive film be placed in contact with the adhesive part of the food. This makes it possible to prevent or reduce the adhesion of the food to the non-adhesive layer of the non-adhesive film of the present invention, even in the particularly highly adhesive part of the food.

  In addition, when the food is sealed in the packaging container, it is preferable that the non-adhering layer of the non-adhesive film be placed in contact with the portion of the food that should not adhere to the packaging container. This allows the packaging container to be sealed so that the portion not to be attached to the packaging container and the packaging container do not come in direct contact with each other. For example, the consumer opens the packaging container and the food is attached with the non-adhesive film placed thereon. When removing the non-adhesive film from the packaging container, adhesion of the food to the non-adhesive film can be prevented or reduced, so that no residue is left on the appearance or the film and the commercial value can be reduced. There is also an effect that there is no.

  The non-adhesive film can be selected based on the type, shape and size of food, packaging container to be enclosed, etc., and cut, divided, cut and cut into sizes and dimensions according to the purpose. . Also, as a method of placing the non-adhering layer in contact with the food, the cut non-adhering film may be placed on the adhesive part of the food via human hands, but the automatic device You may use machines, such as. The placement position of the non-adhesive film is preferably a portion to which food can not adhere to the packaging container, and either on the lower surface (as a spreader), on the upper surface or on the side surface (which may be provided circumferentially) of the food. It may be. Although accommodation in the packaging container may also be performed through human hands, a machine such as an automatic device may be used. These may be selected as appropriate depending on the type, shape and size of the food, the number thereof, the packaging container to be accommodated, the equipment, the environment and the like. Further, the opening of the packaging container is sealed by heat sealing, folding, sticking with an adhesive or bonding, bonding using a binding member such as a needle or the like, binding without using them, fitting with another package It may be performed by a method such as

  In the present invention, it is preferable to use a food packaging container further including a non-adhesive film.

  The form of the food packaging container may be a two-way seal, a three-way seal, a four-way seal, a pillow seal, a standing pouch, an envelope paste, a gusset, a fusion seal, a tube, a caramel package, an overhold, a fin seal, a bun package, a twist, It may be in any of the well known forms used for food applications such as rockets, tetra-packs, gable tops, bricks, sibori and the like.

  Containing a non-adhesive film, as described above, is placed so that the non-adhesive film is in contact with the food, and includes including the food in the packaging container together with the non-adhesive film, but it is always in contact with the food. It does not have to be the case, and it is also included to be contained in the packaging container so as to provide a gap that does not allow the non-adhesive layer of the non-adhesive film and the food to contact with each other. As a result, even if the packaging container is transported, transported, transported, vibrated, tilted, rolled over, transposed, etc., even if a part or whole surface of the food comes into contact with the nonadhering layer of the nonadhering film physically contained within the food container, There is an effect that adhesion of the food can be prevented or reduced.

  Moreover, a heat seal part can be provided by not providing a nonadhesion layer in a part of nonadhesion film, etc., and heat sealability can also be provided.

  Although the non-adhesive film for foodstuffs of this invention is mentioned and illustrated the example, it is not limited to these.

  FIG. 1 shows an example in which the non-adhesive layer of the non-adhesive film 1 is placed in contact with the upper portion of the food 3 and housed in a plastic bag 2 and sealed.

  FIG. 2 shows an example in which the non-adherent layer of the non-adhesive film 1 is placed in contact with the top of the food 3 and housed in the packaging container 2 and the non-adhesive film 1 is sealed together with the plastic bag 2 .

  FIG. 3 shows an example in which the nonadherent layer of the nonadherent film 1 is placed in contact with the top of the food 3, placed on the tray 4 with the food 3 and housed in the plastic bag 2 and sealed. is there.

  In FIG. 4, the nonadherent layer of the nonadherent film 1 is placed so as to contact the entire area from the bottom to the side of the food 3 and further placed on the tray 4 with the food 3 and housed in the plastic bag 2 and sealed. Example. In this case, the tray 4 may not be present.

  In FIG. 5, the nonadherent layer of the nonadherent film 1 is placed in contact with the top of the food 3 and the food 31 and housed in the plastic container 5, and the lid 6 is fitted to the plastic container 5 from the top. , Sealed example. In this case, there are two types of food, but there is no limitation to this. Moreover, although the non-adhesive film 1 was also set to two sheets, you may mount so that one sheet may be in contact with the upper part of the whole several types of foodstuffs.

  EXAMPLES The present invention will be more specifically described below by showing Examples and Comparative Examples, but the present invention is not limited thereto. In Examples and Comparative Examples, parts represent parts by weight and% represents weight%.

Base layer 1
A 20 μm thick OPP film (abbreviation: OPP) is printed with LG-NT ink (urethane, Tokyo Ink Co., Ltd.) and the printing surface is dry laminated to a urethane adhesive (abbreviation: DL) After bonding an OPP film with a thickness of 20 μm using the above, it was aged for 3 days at 40 ° C. to produce a substrate layer 1 having a configuration of “OPP / LG-NT ink / DL / OPP”.

Base layer 2
A 20 μm thick OPP film is printed with LG-NT ink (urethane type, made by Tokyo Ink Co., Ltd.) and aged at 40 ° C. for 3 days to form a base of “OPP / LG-NT ink” The material layer 2 was produced.

[Preparation of non-adhesion layer coating solution]
Non-adherent layer coating solution 1 (Production Example 1)
To 90 parts of ethanol, 10 parts of hydrophobized dry silica (average particle diameter 0.2 μm, WACKER HDK H18, manufactured by Asahi Kasei Wacker Silicone Co., Ltd.) is added while stirring, and non-adhesion layer coating liquid 1 is added. Made.

Non-adhesion layer coating solution 2 (Production Example 2)
10 parts of wet method silica (average particle diameter 6.2 μm, SIPERNAT D10, manufactured by EVONIK) having been hydrophobized was added to 90 parts of ethanol while stirring to prepare a non-adhesion layer coating solution 2.

Non-adhesion layer coating solution 3 (Production Example 3)
10 parts of hydrophobized talc ¹⁾ was added to 90 parts of ethanol while stirring to prepare a non-adhesion layer coating liquid 3.
1): A solution of 10% solution of silicone oil (KF-96-50cs, Shin-Etsu Chemical Co., Ltd.) in 10% methylene chloride is sprayed to 3% by weight of talc, and calcinated at 100 ° C. for 2 hours, Surface-coated talc (average particle size 6 μm)

Non-adhesion layer coating solution 4 (Production Example 4)
Add 8 parts of hydrophobized talc and 2 parts of non-hydrophobicized wet silica (average particle diameter 6.2 μm, SIPERNAT 383DS, manufactured by EVONIK) to 90 parts of ethanol while stirring and do not adhere Layer coating solution 4 was prepared.

Non-adherent layer coating solution 5 (Production Example 5)
10 parts of wet method silica (average particle diameter 6.2 μm, SIPERNAT 383DS, manufactured by EVONIK) not subjected to hydrophobization treatment was added to 90 parts of ethanol while stirring to prepare a non-adhesion layer coating solution 5.

Non-adhesion layer coating solution 6 (Production Example 6)
10 parts of non-hydrophobicized talc (average particle diameter 7 to 11 μm, JA-46R, manufactured by Asada Shoko Co., Ltd.) is added to 90 parts of ethanol while stirring to prepare non-adhesion layer coating liquid 6 did.

[Preparation of anchor coating agent]
Anchor coat agent 1 (Production Example 7)
10 parts of an acrylic resin bead (average particle diameter 10 μm) is added to 50 parts of a polyester resin based solution (solid content 30%, Tg 5 ° C.), 40 parts of n-propyl acetate is added while stirring, and an anchor coat agent 1 was produced.

Anchor coat agent 2 (Production Example 8)
To 60 parts of an acrylic resin solution (solid content 30%, Tg 50 ° C.), 10 parts of an acrylic resin bead (average particle diameter 10 μm) is added, and while stirring, 10 parts of ethyl acetate, 10 parts of methyl ethyl ketone, n-propyl acetate 10 Parts were added to prepare anchor coat agent 2.

Anchor coat agent 3 (Production Example 9)
5 parts of acrylic resin beads (average particle diameter 8 μm) are added to 40 parts of polyester resin based solution (solid content 30%, Tg 20 ° C.), and 25 parts of n-propyl acetate and 30 parts of methyl ethyl ketone are added while stirring , And anchor coating agent 3 were produced.

Anchor coat agent 4 (Production Example 10)
5 parts of acrylic resin beads (average particle diameter 0.8 μm) are added to 40 parts of a polyester resin solution (solid content 30%, Tg 20 ° C.), and 25 parts of n-propyl acetate and 30 parts of methyl ethyl ketone are added while stirring Then, anchor coating agent 4 was produced.

Anchor coat agent 5 (Production Example 11)
20 parts of ethyl acetate, 10 parts of methyl ethyl ketone, and 10 parts of n-propyl acetate were added to 60 parts of an acrylic resin system solution (solid content: 30%, Tg 50 ° C.) while stirring, to prepare anchor coating agent 5.

Example 1
The anchor coat agent 1 (abbreviation: AC1) obtained in Production Example 7 in a first unit, on a PET film (abbreviation: PET) having a thickness of 16 μm using a five-color gravure printing machine, and a second unit The non-adhesion layer coating liquid 1 (abbreviation: non-adhesion layer 1) obtained in Production Example 1 was printed and wound up to prepare a non-adherent film 1. At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 0.9 g / m ² and 0.2 g / m ² . The non-adhesive film 1 became a film of the structure of "PET / AC1 / non-adhesive layer 1" by this.

(Example 2)
Non-adhesive film 2 was produced under the same conditions as in Example 1 except that non-adhesive layer coating solution 1 was changed to non-adhesive layer coating solution 2 (abbreviation: non-adhesive layer 2) obtained in Production Example 2. . At this time, anchor coating agent 1 was diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 2 was diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amount was 1.0 g / m ² and 0.1 g / m ² . The non-adhesive film 2 became a film of the structure of "PET / AC1 / non-adhesive layer 2" by this.

(Example 3)
The non-adhesive film 3 was produced under the same conditions as in Example 1 except that the anchor coat agent 1 was changed to the anchor coat agent 2 (abbreviation: AC2) obtained in Production Example 8. At this time, anchor coating agent 2 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 1.1 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 3 became a film of the structure of "PET / AC2 / non-adhesive layer 1".

(Example 4)
The non-adhesive film 4 was produced under the same conditions as in Example 1 except that the anchor coat agent 1 was changed to the anchor coat agent 3 (abbreviation: AC3) obtained in Production Example 9. At this time, anchor coating agent 3 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 1.1 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 4 became a film of the structure of "PET / AC3 / non-adhesive layer 1".

(Example 5)
The non-adhesive film 5 was produced under the same conditions as in Example 1 except that the anchor coat agent 1 was changed to the anchor coat agent 4 (abbreviation: AC4) obtained in Production Example 10. At this time, anchor coating agent 4 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 1.1 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 5 became a film of the structure of "PET / AC4 / non-adhesive layer 1".

(Example 6)
Using a 7-color gravure press with a reversing machine, the first unit, the anchor coating agent 1, the second unit, the non-adhering layer coating solution 1, the third unit, the third unit with an OPP film of 40 μm thickness The non-adhesive layer coating solution 1 was printed with the anchor coating agent 1 and the fourth unit, and was wound up to produce a non-adhesive film 6. At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.), and coated. Koryou each of the non-stick layer 1 face each 0.9 g / ^{m 2,} respectively surfaces of AC1 is was by 0.2 g / ^{m 2.} The non-adhesive film 6 became a film of the structure of "non-adhesive layer 1 / AC1 / OPP / AC1 / non-adhesive layer 1" by this.

(Example 7)
Non-adhesive film 7 was produced under the same conditions as in Example 1 except that non-adhesive layer coating solution 1 was changed to non-adhesive layer coating solution 3 (abbreviation: non-adhesive layer 3) obtained in Production Example 3. . At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 3 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 1.0 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 7 became a film of the structure of "PET / AC1 / non-adhesive layer 3".

(Example 8)
Non-adhesive film 8 was produced under the same conditions as in Example 1 except that non-adhesive layer coating solution 1 was changed to non-adhesive layer coating solution 4 (abbreviation: non-adhesive layer 4) obtained in Production Example 4. . At this time, anchor coating agent 1 was diluted with SL9155 (non-toluene type solvent, made by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 4 was diluted with TA52 (alcohol type solvent, made by Tokyo Ink Co., Ltd.), The coating amounts were 0.9 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 8 became a film of the structure of "PET / AC1 / non-adhesive layer 4".

(Example 9)
Using a 7-color gravure printer with a reversing machine, the first unit, the anchor coating agent 1, the second unit, the non-adhering layer coating solution 1, the third to the third to the 40 μm thick OPP film In the fifth unit, VESTA ink (polyamide-based, manufactured by Tokyo Ink Co., Ltd.) was printed and wound up to prepare a non-adhesive film 9. At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 0.9 g / m ² and 0.3 g / m ² . Thereby, the non-adhesive film 9 became a film of the configuration of "VESTA ink / OPP / AC1 / non-adhesive layer 1".

(Example 10)
Non-adhesive layer coating solution 1 is printed on base material layer 1 with a first unit, anchor coating agent 1 and a second unit using a five-color gravure printing machine, and wound up, non-adhesive film 10 Was produced. At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amount was 0.9 g / m ² and 0.1 g / m ² . Thereby, the non-adhesive film 10 became a film of the composition of "OPP / LG-NT ink / DL / OPP / AC1 / non-adhesive layer 1".

(Example 11)
Using a five-color gravure printing machine, the first unit is an OPP film with a thickness of 40 μm, the LG-NT ink (urethane type, made by Tokyo Ink Co., Ltd.), the second unit, an anchor coating agent 1, a second The non-adhesion layer coating solution 1 was printed by three units and wound up to prepare a non-adherent film 11. At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amount was 0.9 g / m ² and 0.1 g / m ² . Thereby, the non-sticking film 11 became a film of the structure of "OPP / LG-NT ink / AC1 / non-sticking layer 1."

(Example 12)
Non-adhesion layer coating liquid 1 is printed on the base layer 1 by the first unit, anchor coat agent 1 and the second to third units by using a five-color gravure printing machine, and wound up and not adhered Film 12 was produced. At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 0.9 g / m ² and 0.4 g / m ² . Thereby, the non-adhesive film 12 became a film of the composition of "OPP / LG-NT ink / DL / OPP / AC1 / non-adhesive layer 1".

(Example 13)
Using a five-color gravure printing machine, the anchor coating agent 1 and the second unit print the non-adhesion layer coating solution 1 in a first unit on a 20 μm thick OPP film and take up the substrate layer The non-adhesive film 13 was produced by bonding the printed surface of No. 2 and the opposite surface of the non-adhesive layer 1 by a dry lamination method using a urethane-based adhesive (abbreviation: DL). At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amounts were 0.8 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 13 became a film of the composition of "OPP / LG-NT ink / DL / OPP / AC1 / non-adhesive layer 1".

(Comparative example 1)
Non-adhesive film 14 was produced under the same conditions as in Example 1 except that non-adhesive layer coating solution 1 was changed to non-adhesive layer coating solution 5 (abbreviation: non-adhesive layer 5) obtained in Production Example 5 . At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, made by Tokyo Ink Co., Ltd.), non-adhesion layer coating liquid 5 is diluted with TA52 (alcohol type solvent, made by Tokyo Ink Co., Ltd.), The coating amount was 1.0 g / m ² and 0.1 g / m ² . Thereby, the non-adhesive film 14 became a film of the structure of "PET / AC1 / non-adhesive layer 5".

(Comparative example 2)
Non-adhesive film 15 was produced under the same conditions as in Example 1 except that non-adhesive layer coating solution 1 was changed to non-adhesive layer coating solution 6 (abbreviation: non-adhesive layer 6) obtained in Production Example 6. . At this time, anchor coating agent 1 is diluted with SL9155 (non-toluene type solvent, made by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 6 is diluted with TA52 (alcohol type solvent, made by Tokyo Ink Co., Ltd.), The coating amounts were 1.1 g / m ² and 0.2 g / m ² . Thereby, the non-adhesive film 15 became a film of the structure of "PET / AC1 / non-adhesive layer 6."

(Comparative example 3)
The non-adhesive film 16 was produced under the same conditions as in Example 1 except that the anchor coat agent 1 was changed to the anchor coat agent 5 (abbreviation: AC5) obtained in Production Example 11. At this time, anchor coating agent 5 is diluted with SL9155 (non-toluene type solvent, manufactured by Tokyo Ink Co., Ltd.), and non-adhesion layer coating liquid 1 is diluted with TA52 (alcohol type solvent, manufactured by Tokyo Ink Co., Ltd.). The coating amount was 1.1 g / m ² and 0.1 g / m ² . Thereby, the non-adhesive film 16 became a film of the structure of "PET / AC5 / non-adhesive layer 1."

(Comparative example 4)
The non-adhesive film 17 was produced under the same conditions as in Example 1 except that the anchor coating agent was not used. At this time, the non-adhesion layer coating liquid 1 was diluted with TA 52 (alcohol solvent, manufactured by Tokyo Ink Co., Ltd.), and the coating amount was 0.1 g / m ² . Thereby, the non-adhesive film 17 became a film of the structure of "PET / non-adhesive layer 1".

(Comparative example 5)
A silicone resin (KF-96H-30 Man cs, Shin-Etsu Chemical Co., Ltd., abbreviation: silicone) is applied to a 20 μm thick OPP film, and aged for 3 days at 40 ° C. to form a non-adhesive film 18 Made. At this time, the film thickness of the silicone resin was 0.3 μm. Thereby, the non-sticking film 18 became a film of the "OPP / silicone" configuration.

  The water repellence and non-adhesion properties of the non-adhesive films of Examples 1 to 13 and Comparative Examples 1 to 5 were evaluated, and are shown in Table 1.

<Water repellant>
The contact angle was measured for the nonadherent layer of the nonadherent film. For measurement, a portable contact angle meter PCA-1 (manufactured by Kyowa Interface Science Co., Ltd.) was used. The larger the measured value, the higher the water repellency and the better.
◎: 130 ° or more, :: less than 130 ° 110 ° or more, Δ: less than 110 ° 90 ° or more, x: less than 90 °.

<Non-adhesiveness>
A non-adhering layer of non-adhesive film was placed on a boil (trade name: Koji (Bran) manufactured by Yamazaki Seipan Co., Ltd.) placed horizontally, and a 100 g load was applied over the film for 10 seconds After that, when one side of the non-adhesive film was slowly lifted and peeled off, the adhesion state of the clam on the contact surface of the clam and the film was visually observed. The less adhesion, the better the non-adhesion.
◎: not attached at all, ○: attached slightly, Δ: attached significantly, ×: almost attached.

<Overall evaluation>
Of the water repellency and non-adhesion properties, those with an evaluation result of all "◎" have an overall evaluation of "評 価", and those with an evaluation result of either "◎" or "○" have an overall evaluation of "○", one However, the thing with "(triangle | delta)" made "(triangle | delta)" as comprehensive evaluation, and the thing with "x" even one was made into "x" as comprehensive evaluation.

  According to Table 1, it is clear that the non-adhesive films of Examples 1 to 13 are superior in water repellency and non-adhesiveness as compared with the non-adhesive films of Comparative Examples 1 to 5. Comparative example 1 or 2 which is an example of the non-adhesive film which used the silica or the talc which is not hydrophobized is inferior in non-adhesiveness. Moreover, Comparative example 3 which is an example using an anchor coat agent which does not contain a concavo-convex imparting agent is inferior in non-adhesiveness. In Comparative Example 4 which is an example in which the anchor coating agent is not used, most of the crumbs adhere to the film, and the effect of the nonadherent layer does not appear. The comparative example 5 which is an example which apply | coated the silicone resin which is a prior art example is not effective in non-adhesiveness.

According to the non-adhesive film for food having the non-adhesive property of the present invention, it has sufficient non-adhesive property and can be easily manufactured at low cost, so that it is effectively used as a non-adhesive film to which food does not adhere can do. In addition, depending on the food, application, and form, the nonadhesion requirement may differ, and in such a case, the nonadhesion film and the nonadhesion film may be adjusted by lowering the dot area ratio of the gravure plate or adjusting the plate depth. Adherence to food can be easily controlled. Moreover, by providing a printing ink layer in a base material layer, it can utilize for the display of customer-oriented information, such as a campaign and the method of eating food.
In addition, since it can be coated by the gravure printing method, it is widely used for various water repellent films such as daily necessities applications, pharmaceutical applications and industrial materials applications as well as food applications, packaging bags using such as stickers, labels and sheets. Applicable

1 non-stick film 2 plastic bag 3, 31 food 4 tray 5 plastic container 6 lid

Claims (2)

In the manufacturing method of the non-adhesive film for the food for enclosures which the anchor coat layer and the non-adhesion layer are included in the packaging container laminated | stacked in this order on the at least one surface of a base material layer,
The anchor coat layer is coated with an anchor coat agent containing acrylic resin beads and one selected from acrylic resins or polyester resins having a glass transition point (Tg) of 5 ° C. or more and 50 ° C. or less. Layer formed by
The non-adhesive layer is a layer formed by applying a coating liquid containing hydrophobized inorganic particles and alcohol and / or water,
The substrate layer is at least one selected from paper, aluminum foil, plastic film or sheet,
The packaging container is at least one selected from plastic containers, plastic bags, metal containers, paper containers, paper bags, and glass containers,
Forming an anchor coat layer;
The step of forming a non-adhesion layer is a step of forming in this order ,
And the said process of forming the said anchor coat layer is a coating process by gravure using one unit of a multicolor gravure printer,
Wherein said step of forming a non-adherent layer is a non-for food for inclusion to be encapsulated into a packaging container, characterized in that the coating is a process by gravure printing using a different one unit of the multi-color gravure printing machine Method for producing adhesive films.   The package according to claim 1, wherein the hydrophobized inorganic particles are at least one selected from silica, talc, sericite, mica, kaolin, or a mixture thereof subjected to hydrophobization. The manufacturing method of the non-adhesive film for the foodstuffs for enclosures enclosed in a container.

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