Oilproof decorative paper and decorative plate

Abstract

To provide oilproof decorative paper which has high oil resistance, suppresses occurrence of cracking in bending processing, and contributes to reduction of a used amount of a plastic material, and a decorative plate.SOLUTION: Oilproof decorative paper 10 includes a paper base material 1, an anchor coat layer 2, a vapor-deposited layer 3, an adhesive layer 4, and a sealant layer 5, in this order, wherein the anchor coat layer 2 contains at least one of a polyvinyl alcohol-based resin and polyolefin having a polar group.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an oil-resistant decorative paper used for furniture such as kitchen doors, kitchen storage, washbasin storage, and drawer bottom plates.

Background Art

[0002] Conventionally, in furniture and fixtures such as kitchen doors, kitchen storage, washbasin storage, or the bottom plates of their drawers, oil and oily chemicals used in daily life adhere, and the oil soaks into the wooden base material of the furniture and fixtures, causing oil stains, or floating or swelling may occur on the decorative paper covering the surfaces of those furniture and fixtures. This is mainly a phenomenon that occurs because oil and oily chemicals penetrate into the interior of the decorative paper covering the surface of the furniture and fixtures and soak into the base paper layer and the wooden base material layer.

[0003] As a method for suppressing the penetration of such oil and oily chemicals, decorative papers with high oil resistance are widely used. (For example, Patent Document 1)

[0004] On the other hand, even when using decorative papers with high oil resistance, cracks may occur on the surface of the decorative paper or across each constituent layer during lamination of these decorative papers to a wooden base material or during handling during processing. If cracks occur, the intrusion of oil into the interior of the decorative paper from there cannot be completely prevented, and oil stains may occur even when using decorative papers with high oil resistance.

[0005] On the other hand, compared with decorative papers mainly made of paper, synthetic resin sheets (90% by mass or more of plastic materials) such as polyethylene and polypropylene, which hardly allow oil penetration originally, may be used for the above-mentioned furniture and fixtures. However, in recent years, due to the increasing environmental awareness triggered by issues such as marine plastic waste, the momentum for plastic reduction has been growing. From the perspective of promoting the effective use of resources based on the Law for Promoting the Effective Use of Resources, in order to reduce the amount of plastic materials used, in various fields, the use of paper instead of plastic materials is being considered. If cracking in the constituent layers of cosmetic paper made mainly of paper can be prevented, the synthetic resin sheet can be changed to paper-based cosmetic paper, thereby reducing the amount of plastic materials used.

[0006] For example, Patent Document 2 discloses a packaging material having a paper base material layer, an adhesive layer for dry lamination, and a specific sealant layer laminated adjacent to the adhesive layer for dry lamination.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] Since paper has fold retention (also referred to as dead hold property), it has the characteristic of being easy to process. However, from the perspective of processing suitability (bending processing suitability), when applying cosmetic paper to furniture and fixtures by a building material processing method with a sharper fold (for example, V-cut processing), it has been found that there is still room for improvement in that cracks occur in the layers constituting the cosmetic paper.

[0009] The present disclosure has been made to solve the above-described problems in the prior art, and aims to provide an oil-resistant decorative paper and a decorative board that have high oil resistance, suppress the occurrence of cracks during bending, and contribute to reducing the amount of plastic material used.

Means for Solving the Problems

[0010] In order to solve the above problems, an oil-resistant decorative paper according to one aspect of the present disclosure includes a paper base material, an anchor coat layer, a vapor deposition layer, an adhesive layer, and a sealant layer in this order, and the anchor coat layer contains at least one of a polyvinyl alcohol-based resin and a polyolefin having a polar group. Also, in order to solve the above problems, a decorative board according to one aspect of the present disclosure includes a substrate and the oil-resistant decorative paper attached to the substrate.

Effects of the Invention

[0011] According to one aspect of the present disclosure, it has high oil resistance, suppresses the occurrence of cracks during bending, and can contribute to reducing the amount of plastic material used.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of each thickness, etc. are different from the actual ones. Further, the embodiments shown below are examples of the configurations for embodying the technical idea of the present invention, and the technical idea of the present invention does not specify the materials, shapes, etc. of the constituent parts as the following ones. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

[0014] Furthermore, the embodiments shown below are examples of the configurations for embodying the technical idea of the present invention, and the technical idea of the present invention does not specify the materials of the constituent parts, their shapes, structures, arrangements, etc. as the following ones. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims. Also, the directions of "left - right" and "up - down" in the following description are merely definitions for convenience of explanation and do not limit the technical idea of the present invention. Therefore, for example, if the paper surface is rotated by 90 degrees, "left - right" and "up - down" are read in exchange, and if the paper surface is rotated by 180 degrees, it goes without saying that "left" becomes "right" and "right" becomes "left".

[0015] <Oil - resistant decorative paper> FIG. 1 is a cross - sectional view schematically showing an oil - resistant decorative paper according to an embodiment of the present invention. As shown in this figure, the oil - resistant decorative paper 10 according to this embodiment includes a paper base material 1, an anchor coat layer 2, a vapor deposition layer 3, an adhesive layer 4, and a sealant layer 5 in this order. The anchor coat layer 2 contains at least one of a polyvinyl alcohol - based resin and a polyolefin having a polar group. Further, the oil - resistant decorative paper 10 may be provided with a decorative layer in which a pattern printing layer 6 and a surface protection layer 7 are laminated in this order on the sealant layer 5 (that is, on the surface of the sealant layer 5 opposite to the paper base material 1). In FIG. 1, the case where the oil - resistant decorative paper 10 of this embodiment is attached to a base material 9 to form a decorative board 20 is illustrated. The base material 9 and the decorative board 20 will be described later.

[0016] <Paper base material> The material of the paper base material 1 is not particularly limited and may be appropriately selected according to the application of the oil-resistant decorative paper 10 to be applied. There is no particular limitation as long as it is paper mainly composed of plant-derived pulp. Specific examples of the material used for the paper base material 1 include tissue paper, art paper, cast-coated paper, kraft paper, titanium paper, lint paper, cardboard, gypsum board paper, high-quality paper, special high-quality paper, coated paper, sulfuric acid paper, glassine paper, parchment paper, paraffin paper, Japanese paper, imitation paper, and the like. Further, tissue paper (so-called inter-paper reinforced paper) in which synthetic resin is mixed with paper components (for example, cellulose fibers) to strengthen the inter-paper strength, or paper impregnated with latex or synthetic resin may be used. Furthermore, the paper base material 1 using these materials may be subjected to surface treatment such as corona treatment, plasma treatment, or frame treatment as necessary.

[0017] The basis weight of the paper base material 1 is not particularly limited, but if it is less than 20 g / m 2 In the following case, it is too soft, and wrinkles are likely to occur during processing. If it is more than 200 g / m 2 In the above case, peeling from the paper layer (so-called delamination) is likely to occur. Therefore, it is preferably within the range of 20 g / m 2 or more and 200 g / m 2 or less, more preferably within the range of 20 g / m 2 or more and 100 g / m 2 or less, and even more preferably within the range of 25 g / m 2 or more and 70 g / m 2 or less.

[0018] The mass of the paper base material 1 is preferably 50% by mass or more, more preferably 70% by mass or more, and even more preferably 80% by mass or more based on the mass of the entire oil-resistant decorative paper. If the mass of the paper base material 1 is 50% by mass or more based on the mass of the entire oil-resistant decorative paper, compared with conventional oil-resistant members such as synthetic resin sheets (90% by mass or more of plastic materials) made of vinyl chloride, polyethylene, polypropylene, etc. or oil-resistant sheets made of paper / polyethylene / paper, since the amount of plastic used is small, the proportion of the plastic material contained in the oil-resistant decorative paper can be sufficiently reduced. In addition, since 50% by mass or more is a paper material, the oil-resistant decorative paper 10 according to the present embodiment can be said to be made of paper (indicating that it is "made of paper"), and it is also excellent in recyclability.

[0019] A coating layer (not shown) may be provided on the paper base material 1 at least on the side in contact with the anchor coat layer 2 described later. By providing the coating layer, it is possible to prevent the anchor coat layer from penetrating into the paper. In addition, the coating layer can also serve as a caulking to fill the unevenness of the paper, and the anchor coat layer can be formed into a film uniformly without defects. As a result, the oil-resistant decorative paper 10 is more excellent in oil resistance. For the coating layer, for example, as a binder resin, various copolymers such as styrene-butadiene-based, styrene-acrylic-based, ethylene-vinyl acetate-based, etc., polyvinyl alcohol-based resins, cellulose-based resins, paraffin (WAX), etc. are used, and fillers such as clay, kaolin, calcium carbonate, talc, mica, etc. may be included.

[0020] In addition, for the coating layer, for example, an ink containing an acrylic resin as a binder may be used. As the acrylic resin contained as the binder, for example, acrylate copolymer resins mainly composed of ethylene-methyl acrylate copolymer resin (EMA), ethylene-ethyl acrylate copolymer resin (EEA), ethylene-methacrylic acid copolymer resin (EMAA), ethylene-acrylic acid copolymer resin (EAA), ionomer resin, or a mixture thereof can be used. Here, the "main component" refers to the component with the highest content among the components constituting the coating layer.

[0021] Note that the coating layer may be a layer formed by coating an ink containing a urethane resin as a binder. As the urethane resin, a urethane-based one obtained by reacting an acrylic polyol and an isocyanate may be used. For the isocyanate, for example, it can be appropriately selected from tolylene diisocyanate (TDI), xylylene diisocyanate (XDI), hexamethylene diisocyanate (HMDI), diphenylmethane diisocyanate (MDI), lysine diisocyanate (LDI), isophorone diisocyanate (IPDI), methylhexane diisocyanate (HTDI), methylcyclohexanone diisocyanate, trimethylhexamethylene diisocyanate (TMDI), etc. However, considering weather resistance, it is preferable to use hexamethylene diisocyanate (HMDI) having a linear molecular structure. The thickness of the coating layer is not particularly limited, and for example, it may be 1 to 15 μm, or 3 to 10 μm.

[0022] <Anchor coating layer> The anchor coating layer 2 is provided on the surface of the paper substrate 1 and is provided to improve the adhesion between the paper substrate 1 and the vapor deposition layer 3 described later and to improve the oil resistance of the oil-resistant tissue paper. The anchor coating layer 2 contains at least one of a polyvinyl alcohol-based resin and a polyolefin having a polar group. Thereby, the oil-resistant tissue paper 10 is excellent in oil resistance. The anchor coat layer 2 may contain both a polyvinyl alcohol-based resin and a polyolefin having a polar group, or may contain only one of the polyvinyl alcohol-based resin and the polyolefin having a polar group.

[0023] By including a polyolefin having a polar group in the anchor coat layer 2, it is possible to form a dense film due to the crystallinity of the polyolefin, and oil resistance is exhibited. The oil resistance is exhibited due to the crystallinity of the polyolefin, and the adhesion to the vapor deposition layer 3 is exhibited due to having a polar group.

[0024] The polyolefin having a polar group may have at least one selected from the group consisting of a carboxyl group, a salt of a carboxyl group, a carboxylic anhydride, and a carboxylic acid ester.

[0025] As the polyolefin having a polar group, those obtained by copolymerizing ethylene or propylene with an unsaturated carboxylic acid (an unsaturated compound having a carboxyl group such as acrylic acid, methacrylic acid, maleic anhydride, etc.) or an unsaturated carboxylic acid ester, and salts obtained by neutralizing a carboxylic acid with a basic compound may be used, and in addition, those copolymerized with vinyl acetate, an epoxy-based compound, a chlorine-based compound, a urethane-based compound, a polyamide-based compound, etc. may also be used. Specific examples of the polyolefin having a polar group include a copolymer of an acrylic acid ester and maleic anhydride, an ethylene-vinyl acetate copolymer, an ethylene-glycidyl methacrylate copolymer, and the like.

[0026] The polyvinyl alcohol-based resin is, for example, a completely saponified polyvinyl alcohol resin, a partially saponified polyvinyl alcohol resin, a modified polyvinyl alcohol resin, or an ethylene-vinyl alcohol copolymer resin. The degree of polymerization of the polyvinyl alcohol-based resin is preferably 300 or more and 1700 or less. If the degree of polymerization is 300 or more, the oil resistance and bending resistance of the oil-resistant decorative paper are improved. If the degree of polymerization is 1700 or less, the viscosity of the coating liquid of the polyvinyl alcohol-based resin described later becomes low, and the coating suitability is improved.

[0027] In addition, when the anchor coat layer 2 contains a polyvinyl alcohol-based resin, it has excellent flexibility, can suppress cracking of the vapor deposition layer described later after bending (folding), suppress deterioration of oil resistance, and can improve the adhesion between the vapor deposition layer and the anchor coat layer 2. The total content of the polyolefin having a polar group and the polyvinyl alcohol-based resin in the anchor coat layer 2 may be, for example, 50% by mass or more, preferably 70% by mass or more, more preferably 90% by mass or more, and even more preferably 100% by mass.

[0028] The anchor coat layer 2 may contain other components in addition to the polyolefin having a polar group and the polyvinyl alcohol-based resin. Examples of other components include polyolefins other than the polyolefin having a polar group, polyacrylics, polyesters, polyurethanes, polyethyleneimines, polylactic acids, polyamides, starches and their derivatives, and resins such as cellulose derivatives, as well as additives such as silane coupling agents, organic titanates, glycerin, glycols, casein, and waxes. That is, the anchor coat layer 2 may contain at least one of the resin and the additive in addition to at least one of the polyolefin having a polar group and the polyvinyl alcohol-based resin.

[0029] The thickness of the anchor coat layer 2 may be, for example, in the range of 1 μm or more and 20 μm or less, more preferably in the range of 2 μm or more and 10 μm or less, and even more preferably in the range of 2 μm or more and 5 μm or less. If the thickness of the anchor coat layer 2 is 1 μm or more, the unevenness of the paper base material 1 described above can be efficiently filled, and the vapor deposition layer 3 described later can be laminated uniformly. Also, if the thickness of the anchor coat layer 2 is 20 μm or less, the vapor deposition layer 3 can be laminated uniformly while suppressing costs.

[0030] Examples of the solvent contained in the coating liquid of the anchor coat layer 2 include water, methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, n-butyl alcohol, n-pentyl alcohol, dimethyl sulfoxide, dimethylformamide, dimethylacetamide, toluene, hexane, heptane, cyclohexane, acetone, methyl ethyl ketone, diethyl ether, dioxane, tetrahydrofuran, ethyl acetate, and butyl acetate. These solvents may be used alone or in combination of two or more. Among these, from the viewpoint of properties, methyl alcohol, ethyl alcohol, isopropyl alcohol, toluene, ethyl acetate, methyl ethyl ketone, and water are preferred. Also, from the environmental viewpoint, methyl alcohol, ethyl alcohol, isopropyl alcohol, and water are preferred.

[0031] As a method for providing the anchor coat layer 2 on the paper base material 1, it can be obtained by applying a coating liquid containing at least one of the above-mentioned polyolefin and polyvinyl alcohol-based resin and a solvent on the paper base material and drying it. From the viewpoint of preventing blocking, the particle size of the polyolefin in the coating liquid is preferably larger so that the contact area is smaller. Although not particularly limited, specifically, the particle size may be in the range of 0.1 μm or more and 1 μm or less, more preferably in the range of 1 nm or more and 0.7 μm or less, and even more preferably in the range of 1 nm or more and 0.5 μm or less.

[0032] <Vapor deposition layer> The vapor deposition layer 3 is a layer obtained by vapor-depositing a metal or an inorganic compound. The material of the vapor deposition layer may be obtained by vapor-depositing aluminum, or may contain aluminum oxide (AlOx), silicon oxide (SiOx), etc.

[0033] The thickness of the vapor deposition layer 3 may be appropriately set according to the intended use, but is preferably in the range of 10 nm or more and 300 nm or less, more preferably in the range of 30 nm or more and 100 nm or less, and even more preferably in the range of 50 nm or more and 80 nm or less. By setting the thickness of the vapor deposition layer 3 to 10 nm or more, it is easy to make the continuity of the vapor deposition layer 3 sufficient. By setting it to 300 nm or less, the occurrence of curling and cracking can be sufficiently suppressed, and sufficient oil resistance and flexibility can be easily achieved.

[0034] The vapor deposition layer 3 is preferably formed by a vacuum film-forming means from the viewpoints of oil resistance and film uniformity. Known methods such as vacuum evaporation, sputtering, and chemical vapor deposition (CVD) can be used as the film-forming means, but the vacuum evaporation method is preferred because of its high film-forming speed and productivity. Among the vacuum evaporation methods, in particular, the film-forming means by electron beam heating is effective because it is easy to control the film-forming speed by the irradiation area, electron beam current, etc., and the temperature increase and decrease of the vapor deposition material can be performed in a short time.

[0035] <Adhesive layer> The adhesive layer 4 is provided on the surface of the vapor deposition layer 3 so as to be in contact with the vapor deposition layer 3. As the adhesive layer 4, various materials can be used as long as they can adhere the vapor deposition layer 3 and the sealant layer 5. Examples include cured products of urethane-based adhesives and cured products of epoxy-based adhesives.

[0036] 〔Urethane-based adhesive〕 The urethane-based adhesive is a resin composition containing a polyol having two or more hydroxyl groups in one molecule and an isocyanate compound having two or more isocyanate groups in one molecule. A urethane bond is formed by curing the urethane-based adhesive. The urethane-based adhesive is preferably a two-component curing type.

[0037] The urethane-based adhesive may have oil resistance. Examples of methods for imparting oil resistance to the urethane-based adhesive include, for example, a method using a polyol having an oil-resistant skeleton, a method of containing a phosphoric acid-modified compound in the resin composition, and a method of containing a plate-like inorganic compound in the resin composition. These methods can be used alone or in combination of two or more methods.

[0038] As the polyol having an oil-resistant skeleton, those in which the main skeleton is polyester or polyester polyurethane and the polyester contains a structure derived from ortho-oriented aromatic dicarboxylic acid or its anhydride are preferable. The polyester portion of the main skeleton may be obtained by polycondensation reaction of a polycarboxylic acid and a polyhydric alcohol.

[0039] Examples of the polycarboxylic acid include aliphatic polycarboxylic acids and aromatic polycarboxylic acids. Examples of the aliphatic polycarboxylic acid include succinic acid, adipic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, and 1,4-cyclohexanedicarboxylic acid.

[0040] Examples of the aromatic polycarboxylic acid include phthalic acid, terephthalic acid, isophthalic acid, pyromellitic acid, trimellitic acid, 1,2-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 2,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, naphthalic acid, biphenyldicarboxylic acid, 1,2-bis(phenoxy)ethane-p,p'-dicarboxylic acid, and anhydrides of these dicarboxylic acids, and polybasic acids such as p-hydroxybenzoic acid and p-(2-hydroxyethoxy)benzoic acid. The polycarboxylic acid can be used alone or in combination of two or more.

[0041] As the polyvalent carboxylic acid, ortho-oriented aromatic dicarboxylic acid or its anhydride is preferable. The content of the ortho-oriented aromatic dicarboxylic acid or its anhydride is preferably 70 mass% or more and 100 mass% or less based on the total amount of the polyvalent carboxylic acid component constituting the polyester.

[0042] Examples of the ortho-oriented aromatic dicarboxylic acid include phthalic acid, 1,2-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, and anhydrides of these dicarboxylic acids.

[0043] Examples of the polyhydric alcohol include aliphatic polyhydric alcohols and aromatic polyhydric phenols. Examples of the aliphatic polyhydric alcohol include ethylene glycol, propylene glycol, butylene glycol, neopentyl glycol, cyclohexanedimethanol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, 1,6-hexanediol, methylpentanediol, dimethylbutanediol, butylethylpropanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, and tripropylene glycol.

[0044] Examples of the aromatic polyhydric phenol include hydroquinone, resorcinol, catechol, naphthalenediol, biphenol, bisphenol A, bisphenol F, and tetramethylbiphenol, and ethylene oxide adducts and hydrogenated alicyclics thereof.

[0045] The isocyanate compound may be aromatic having an aromatic ring, may be aliphatic having no aromatic ring, may be a low molecular compound or a high molecular compound, and may be a diisocyanate compound having two isocyanate groups or a polyisocyanate compound having three or more isocyanate groups. The isocyanate compound may be a blocked isocyanate compound obtained by adding an isocyanate blocking agent.

[0046] From the perspective of the adhesiveness of the adhesive layer 4, polyisocyanate compounds are preferred as the isocyanate compounds. Since the isocyanate compounds impart oil resistance to the adhesive layer 4, those having an aromatic ring are preferred, and in particular, isocyanate compounds containing a metaxylene skeleton are preferred.

[0047] Examples of the isocyanate compounds include tetramethylene diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, hydrogenated diphenylmethane diisocyanate, metaxylylene diisocyanate, hydrogenated xylylene diisocyanate, isophorone diisocyanate, and trimers of these isocyanate compounds. These isocyanate compounds are, for example, low molecular weight active hydrogen compounds such as ethylene glycol, propylene glycol, metaxylylene alcohol, 1,3-bis(hydroxyethyl)benzene, 1,4-bis(hydroxyethyl)benzene, trimethylolpropane, glycerol, pentaerythritol, erythritol, sorbitol, ethylenediamine, monoethanolamine, diethanolamine, triethanolamine, metaxylylene diamine, and alkylene oxide adducts thereof, various polyester resins, polyether polyols, and high molecular weight active hydrogen compounds such as polyamides, and may be adducts, burettes, or allophanates obtained by reacting the isocyanate compounds with the high molecular weight active hydrogen compounds.

[0048] 〔Epoxy-based Adhesive〕 The epoxy-based adhesive is a resin composition containing an epoxy resin and an epoxy resin curing agent.

[0049] The epoxy resin may have a saturated bond or an unsaturated bond and may be any of an aliphatic compound, an alicyclic compound, an aromatic compound, or a heterocyclic compound. In order to exhibit higher oil resistance, an epoxy resin containing an aromatic ring or an alicyclic structure in the molecule is preferred.

[0050] Examples of the epoxy resin include an epoxy resin having a glycidylamino group derived from metaxylylenediamine, an epoxy resin having a glycidylamino group derived from 1,3-bis(aminomethyl)cyclohexane, an epoxy resin having a glycidylamino group derived from diaminodiphenylmethane, an epoxy resin having a glycidylamino group and / or a glycidyloxy group derived from para-aminophenol, an epoxy resin having a glycidyloxy group derived from bisphenol A, an epoxy resin having a glycidyloxy group derived from bisphenol F, an epoxy resin having a glycidyloxy group derived from phenol novolak, and an epoxy resin having a glycidyloxy group derived from resorcinol. The epoxy resin may be used alone or in combination of two or more. From the viewpoint of oil resistance, an epoxy resin having a glycidylamino group derived from metaxylylenediamine and an epoxy resin having a glycidyloxy group derived from bisphenol F are preferable, and an epoxy resin having a glycidylamino group derived from metaxylylenediamine is more preferable.

[0051] The epoxy resin curing agent may be a reaction product of metaxylylenediamine or para-xylylenediamine and an unsaturated carboxylic acid represented by the following formula (1) and / or its derivative.

[0052] [Chemical formula] [In formula (1), R1 represents an alkyl group having 1 to 8 carbon atoms, an aralkyl group having 1 to 8 carbon atoms, or an aryl group.]

[0053] By using metaxylylenediamine or para-xylylenediamine as a precursor of the epoxy resin curing agent, the oil resistance is further improved. From the viewpoint of oil resistance, metaxylylenediamine is preferable. Metaxylylenediamine or para-xylylenediamine may be used alone or in combination of two or more.

[0054] By using the unsaturated carboxylic acid represented by the above formula (1) and / or its derivative as a precursor of the epoxy resin curing agent, good adhesiveness is exhibited. Examples of the unsaturated carboxylic acid and / or its derivative represented by the above formula (1) include crotonic acid, 2-pentenoic acid, 2-hexenoic acid, 4-methyl-2-pentenoic acid, 2-heptenoic acid, 4-methyl-2-hexenoic acid, 5-methyl-2-hexenoic acid, 4,4-dimethyl-2-pentenoic acid, 4-phenyl-2-butenoic acid, cinnamic acid, o-methylcinnamic acid, m-methylcinnamic acid, p-methylcinnamic acid, 2-octenoic acid, 2-nonenoic acid, 2-decenoic acid, 2-undecenoic acid and other unsaturated carboxylic acids, and their derivatives (such as esters, amides, acid anhydrides, acid chlorides, etc.), but are not particularly limited thereto. The unsaturated carboxylic acid and / or its derivative represented by the above formula (1) may be used alone or in combination of two or more.

[0055] The unsaturated carboxylic acid and / or its derivative represented by the above formula (1) is preferably at least one selected from the group consisting of unsaturated carboxylic acids and their derivatives in which R1 in the above formula (1) is a hydrocarbon group having 1 to 3 carbon atoms or a phenyl group, in order to further improve oil resistance and adhesiveness. At least one selected from the group consisting of crotonic acid and crotonic acid derivatives is more preferable, and at least one selected from the group consisting of crotonic acid and crotonic acid esters is even more preferable. As the crotonic acid ester, an alkyl ester having 1 to 3 carbon atoms is more preferable, and methyl crotonate is even more preferable.

[0056] The adhesive layer 4 may be formed using a one-component curing type or two-component curing type adhesive (dry lamination method), may be formed using a solventless adhesive (non-solvent dry lamination method), or may be formed by extruding a molten resin onto the surface of the vapor deposition layer 3 (extrusion lamination method).

[0057] From the viewpoint of improving the adhesiveness of the adhesive layer 4, the thickness of the adhesive layer 4 is preferably 0.01 μm or more, and from the viewpoint of further reducing the amount of plastic material used, it is preferably 10 μm or less.

[0058] <Sealant layer> The sealant layer 5 is provided on the surface of the adhesive layer 4 so as to be in contact with the adhesive layer 4. Examples of the material of the sealant layer 5 include thermoplastic resins such as polyolefin resins and polyester resins, and polyolefin resins are generally used. Specifically, as the polyolefin resin, ethylene-based resins such as low-density polyethylene resin (LDPE), medium-density polyethylene resin (MDPE), linear low-density polyethylene resin (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, and ethylene-(meth)acrylic acid copolymer, homopolypropylene resin (PP), propylene-ethylene random copolymer, propylene-ethylene block copolymer, propylene-α-olefin copolymer and other polypropylene-based resins, or mixtures thereof can be used.

[0059] From the viewpoint of improving the adhesion strength, the thickness of the sealant layer 5 is preferably 5 μm or more, and from the viewpoint of further reducing the amount of plastic material used, it is preferably 50 μm or less.

[0060] <Pattern printing layer> The pattern printing layer 6 is for imparting design properties, and any pattern can be used as the pattern. Generally speaking, the pattern printing layer 6 is composed of a base coloring layer 6a formed on the sealant layer 5 and a pattern pattern layer 6b formed on the base coloring layer 6a for adding a pattern for imparting design properties. As the pattern of the pattern printing layer 6 by the pattern pattern layer 6b, for example, a wood grain pattern, a stone grain pattern, a cloth grain pattern, a cork pattern, an abstract pattern, or a combination of two or more of these can be used. The under-coloring layer 6a may be a betaine ink layer provided between the pattern printing layer 6 and the sealant layer 5 to ensure concealment, or it may be a coloring layer for emphasizing the pattern of the pattern pattern layer 6b. Further, the under-coloring layer 6a may be omitted. These printing methods are not particularly limited, and known printing methods such as gravure printing, offset printing, silk screen printing, and inkjet printing can be used.

[0061] There is no particular limitation on the printing ink or the like, and it is selected according to the required function, and there is no particular problem whether it is oil-based or water-based. The printing ink or the like used for the pattern printing layer 6 can be the same as that used for the printing pattern layer in conventional decorative paper. For example, acrylic ink can be used. As the acrylic ink, for example, a two-component curable urethane resin-based ink obtained by blending an isocyanate curing agent with an acrylic polyol-based vehicle can be used.

[0062] Furthermore, biomass ink manufactured using plant-derived resources such as cotton, pulp, rice bran, vegetable oil, and seeds of angiosperms as part of the raw materials can be used.

[0063] <Surface protection layer> The surface protection layer 7 that functions as a surface protection layer is a layer for protecting the surface of the oil-resistant decorative paper 10, and is provided to impart surface physical properties such as scratch resistance, abrasion resistance, stain resistance, water resistance, and weather resistance required for the oil-resistant decorative paper 10. The formation of the surface protection layer 7 is not particularly limited, and it can be formed by a known coating method such as gravure coating.

[0064] The material of the surface protective layer 7 is not particularly limited, and the same materials as those used as the surface protective layer in conventional decorative papers can be used. As the material that can be used for the surface protective layer 7, for example, an acrylic urethane resin or an ionizing radiation curable resin can be used. As the acrylic urethane resin, for example, a reaction product mainly composed of an acrylic polyol compound and an isocyanate compound as a curing agent can be adopted. Further, as the ionizing radiation curable resin, for example, a composition mainly composed of at least any one of a prepolymer, an oligomer, and a monomer having a polymerizable unsaturated bond such as a (meth)acryloyl group, which has a property of undergoing a crosslinking reaction by irradiation with ionizing radiation such as an electron beam or ultraviolet rays, can be adopted.

[0065] The surface protective layer 7 may be a single layer or a multi-layer of two or three layers. In this example, the surface protective layer 7 has a two-layer structure in which a first protective layer 7a and a second protective layer 7b as the outermost layer are laminated in this order on the pattern printing layer 6. When the surface protective layer 7 is a multi-layer, a gloss-matte expression can also be imparted by separately applying a matte resin and a gloss resin (for example, separately applying the first protective layer 7a and the second protective layer 7b). Further, an uneven expression with the resin partially raised can also be imparted. In this example, an uneven expression is imparted by providing the second protective layer 7b with the resin partially raised on the first protective layer 7a. Furthermore, an antibacterial agent, an antiviral agent, etc. can also be added to the surface protective layer 7.

[0066] As described above, the embodiments of the present disclosure have been described in detail, but the present disclosure is not limited to the above embodiments. For example, in the oil-resistant decorative paper 10, a coating layer may be provided between the vapor deposition layer 3 and the adhesive layer 4 as a layer for protecting the vapor deposition layer 3. Examples of the material of such a coating layer include a polyvinyl alcohol-based resin, a polyolefin-based resin, a polyester-based resin, a polyurethane-based resin, and an epoxy-amine-based resin.

[0067] <Decorative board> As described above, the oil-resistant decorative paper 10 of the present embodiment is most suitable for applications that require oil resistance to oil and oil-based chemicals among furniture and fixtures such as kitchen doors, kitchen storage, washroom storage, and drawer bottom plates. That is, the oil-resistant decorative paper 10 is preferably used for a decorative board as a surface material having an oil-resistant function. As shown in FIG. 1, the decorative board 20 includes a base material 9 (an example of a substrate) and the oil-resistant decorative paper 10 attached to the base material 9. In the present embodiment, the base material 9 is, for example, a wood-based base material. As the wood-based base material, for example, wood-based base materials such as MDF (Medium density fiberboard), particle board, and plywood can be used.

[0068] FIG. 2 is a schematic cross-sectional view showing a decorative board 20 formed by adhering the oil-resistant decorative paper 10 to the base material 9 and performing V-cut processing. For example, in the decorative board 20, the paper base material 1 of the oil-resistant decorative paper 10 and the base material 9 are adhered. In the V-cut processed decorative board 20, the base material 9 has bent portions 30 (bent portions 31, 33). The bent portion 30 is a portion where the oil-resistant decorative paper 10 is bent on the base material 9. The bent portion 31 is a corner portion (so-called pin corner) protruding at a right angle. The bent portion 33 is a reverse V-shaped portion where the oil-resistant decorative paper 10 is valley-folded as viewed from the innermost layer (paper base material 1) side of the oil-resistant decorative paper 10. On the other hand, the bent portion 31 (pin corner) is a portion where the oil-resistant decorative paper 10 is mountain-folded as viewed from the innermost layer side.

[0069] The decorative board 20 shown in FIG. 2 may be a member assembled by adhering the paper base material 1 side of the oil-resistant decorative paper 10 to one base material 9 (wood-based base material), then grooving the opposite side of the base material 9 to the oil-resistant decorative paper 10 in a V shape and assembling it according to the groove, or a member obtained by grooving one side of the base material 9 in a V shape and then adhering the oil-resistant decorative paper 10 to the member assembled according to the groove. That is, the decorative board 20 may be V-cut processed on the base material 9 after the oil-resistant decorative paper 10 is attached to the base material 9, or the oil-resistant decorative paper 10 may be attached to the base material 9 that has been pre-V-cut processed. Further, the decorative board 20 may be one in which the oil-resistant decorative paper 10 is adhered to a base material 9 having a shape whose cross-section draws a curve.

[0070] The decorative board 20 according to this embodiment can be used for furniture and fixtures such as interior doors, kitchen doors, and storage doors that require warpage prevention. Further, the decorative board 20 according to this embodiment can maintain high oil resistance even for furniture and fixtures that are processed into a shape having a more acute bending portion.

[0071] In this embodiment, a V-cut processed member is cited as an example of the base material 9 in the decorative board 20. However, the present invention is not limited to this, and for example, the oil-resistant decorative paper 10 according to this embodiment may be used to perform wrapping processing on the base material 9.

[0072] (Effects of the embodiment) (1) The oil-resistant decorative paper 10 according to this embodiment includes a paper base material 1, an anchor coat layer 2, a vapor deposition layer 3, an adhesive layer 4, and a sealant layer 5 in this order. The anchor coat layer 2 contains at least one of a polyvinyl alcohol-based resin and a polyolefin having a polar group. According to this configuration, the amount of plastic material used in the oil-resistant decorative paper can be reduced, and it further has high oil resistance and can suppress the occurrence of cracks during bending processing. (2) The anchor coat layer 2 in the oil-resistant decorative paper 10 contains a polyolefin having a polar group, and the polyolefin having a polar group may have at least one of a carboxyl group, a salt of a carboxyl group, a carboxylic anhydride, and a carboxylic acid ester. According to this configuration, oil resistance is exhibited due to the crystallinity of the polyolefin, and adhesion to the vapor deposition layer 3 is improved by having a polar group. (3) The anchor coat layer 2 in the oil-resistant decorative paper 10 contains a polyolefin having a polar group, and the polyolefin having a polar group may be a copolymer of an acrylic ester and maleic anhydride. According to this configuration, oil resistance is exhibited due to the crystallinity of the polyolefin, and adhesion to the vapor deposition layer 3 is improved by having a polar group. (4) In the oil-resistant decorative paper 10, the anchor coat layer 2 contains a polyolefin having a polar group, and the polyolefin having a polar group may be an ethylene-vinyl acetate copolymer. According to this configuration, oil resistance is exhibited due to the crystallinity of the polyolefin, and adhesion to the vapor deposition layer 3 is improved by having a polar group. (5) In the oil-resistant decorative paper 10, the anchor coat layer 2 contains a polyolefin having a polar group, and the polyolefin having a polar group may be an ethylene-glycidyl methacrylate copolymer. According to this configuration, oil resistance is exhibited due to the crystallinity of the polyolefin, and adhesion to the vapor deposition layer 3 is improved by having a polar group. (6) The anchor coat layer 2 in the oil-resistant decorative paper 10 may contain a polyvinyl alcohol-based resin. According to this configuration, it has excellent flexibility, can suppress cracking of the vapor deposition layer described later after bending (folding), suppress deterioration of oil resistance, and can improve the adhesion between the vapor deposition layer 3 and the anchor coat layer 2.

[0073] (7) The adhesive layer 4 in the oil-resistant decorative paper 10 is a cured product of a resin composition containing an epoxy resin and an epoxy resin curing agent. The epoxy resin curing agent may be a reaction product of metaxylylenediamine or paraxylylenediamine and an unsaturated carboxylic acid represented by the above formula (1) and / or its derivative. According to this configuration, the oil resistance can be further improved. (8) The adhesive layer 4 in the oil-resistant decorative paper 10 may be a cured product of a resin composition containing a polyol having two or more hydroxyl groups in one molecule and an isocyanate compound having two or more isocyanate groups in one molecule. According to this configuration, the adhesion between the vapor deposition layer 3 and the sealant layer 5 can be surely improved. (9) The mass of the paper base material 1 in the oil-resistant decorative paper 10 may be 50% by mass or more based on the mass of the entire oil-resistant decorative paper. According to this configuration, the proportion of the plastic material contained in the oil-resistant decorative paper can be sufficiently reduced, and the recyclability is also excellent. (10) The oil-resistant decorative paper 10 may further include a decorative layer in which a pattern printing layer 6 and a surface protection layer 7 are laminated in this order on the sealant layer 5. According to this configuration, the design property and the surface physical properties of the oil-resistant decorative paper can be improved. (11) The decorative board 20 according to the present embodiment includes a base material 9 and an oil-resistant decorative paper 10 attached to the base material 9. According to this configuration, in the oil-resistant decorative paper 10 used for the decorative board 20, the amount of the plastic material used can be reduced, and it has a high level of oil resistance and can suppress the occurrence of cracks during bending. (12) The base material 9 in the decorative board 20 may have a bent portion 30. According to this configuration, even in a fine member, the occurrence of cracks can be suppressed, the design property can be maintained, and the oil resistance can be improved.

Example

[0074] Hereinafter, the present disclosure will be described in more detail with reference to examples, but the present disclosure is not limited to these examples.

[0075] <Production of Oil-Resistant Decorative Paper> (Example 1) On the surface of paper serving as a paper substrate (clay-coated paper, paper thickness: 50 μm, clay coating layer thickness: 5 μm, basis weight: 55 g / m2), a coating solution containing a salt of a carboxyl group (trade name: Chem Pearl S100, ionomer type, particle size: <0.1 μm, solvent: water, IPA, manufactured by Mitsui Chemicals) was applied with a bar coater and dried in an oven to form an anchor coat layer (thickness: 3 μm). AL vapor deposition was performed on the anchor coat layer to form a vapor deposition layer (thickness: 50 nm). On the vapor deposition layer, a linear low-density polyethylene resin (LLDPE) film (trade name: TUX-MCS, manufactured by Mitsui Chemicals Toagosei Co., Ltd., thickness: 30 μm) as a sealant layer was dry laminated using an adhesive (trade name: Takelac A525 / Takenate A52, urethane-based two-component type, manufactured by Mitsui Chemicals, Inc.) to obtain oil-resistant decorative paper. The thickness of the adhesive layer was 5 μm. The mass of the paper in the entire oil-resistant decorative paper of this example was 53% by mass.

[0076] (Example 2) An oil-resistant decorative paper was obtained in the same manner as in Example 1, except that an anchor coat layer was formed using a polyolefin aqueous dispersion instead of the coating solution containing a salt of a carboxyl group. The polyolefin aqueous dispersion was prepared by neutralizing a copolymer of an acrylate ester and maleic anhydride (trade name: Bondine HX-8290, manufactured by Arkema) with triethylamine in a water / IPA mixed solvent. Note that maleic anhydride partially or completely ring-opens in an aqueous solvent to become a carboxylic acid, but after drying, it partially or completely dehydrates again and cyclizes. The mass of the paper in the entire oil-resistant decorative paper of this example was 53% by mass.

[0077] (Example 3) An oil-resistant decorative paper was obtained in the same manner as in Example 1, except that the anchor coat layer was formed using an ethylene-glycidyl methacrylate copolymer (trade name: Sepoljion G515, manufactured by Sumitomo Seika) instead of the coating solution containing a salt of a carboxyl group. The mass of the paper in the entire oil-resistant decorative paper of this example was 53% by mass.

[0078] (Example 4) An oil-resistant greaseproof paper was obtained in the same manner as in Example 1, except that the anchor coat layer was formed using a coating solution composed of an ethylene-vinyl acetate copolymer (trade name: Chemipal V300, manufactured by Mitsui Chemicals, Inc.) instead of the coating solution containing a salt of a carboxyl group. The paper mass in the entire oil-resistant greaseproof paper of this example was 53% by mass.

[0079] (Example 5) An oil-resistant greaseproof paper was obtained in the same manner as in Example 1, except that the vapor deposition layer was changed to silica instead of AL. The paper mass in the entire oil-resistant greaseproof paper of this example was 53% by mass.

[0080] (Example 6) An oil-resistant greaseproof paper was obtained in the same manner as in Example 1, except that the adhesive layer was formed using an epoxy-based adhesive having gas barrier properties (trade name: Maxieve M-100 / C-93, manufactured by Mitsubishi Gas Chemical Company, Inc.) instead of the urethane-based two-component type (Takelac A525 / Takenate A52). The paper mass in the entire oil-resistant greaseproof paper of this example was 53% by mass.

[0081] (Example 7) An oil-resistant greaseproof paper was obtained in the same manner as in Example 1, except that the adhesive layer was formed using a urethane-based adhesive having gas barrier properties (trade name: PASLIM VM001 / 108CP, manufactured by DIC Corporation) instead of the urethane-based two-component type (Takelac A525 / Takenate A52). The paper mass in the entire oil-resistant greaseproof paper of this example was 53% by mass.

[0082] (Example 8) In the same manner as in Example 1, an anchor coat layer was formed on the surface of the paper, and an Al vapor deposition layer was formed on the anchor coat layer. On the vapor deposition layer, a linear low-density polyethylene resin (LLDPE) film (trade name: TUX-MCS, manufactured by Mitsui Chemicals Toagosei Co., Ltd., thickness: 30 μm) was formed as the sealant layer in the same manner as in Example 1. At that time, an oil-resistant decorative paper was obtained in the same manner as in Example 1, except that a solventless adhesive having gas barrier properties (trade name: NSRD011 / NSRD006, manufactured by DIC Corporation) was used as the adhesive layer, and the sealant layer was non-solvent dry laminated on the vapor deposition layer. The thickness of the adhesive layer was 5 μm. The mass of the paper in the entire oil-resistant decorative paper of this example was 53% by mass.

[0083] (Example 9) In the same manner as in Example 1, an anchor coat layer was formed on the surface of the paper, and an Al vapor deposition layer was formed on the anchor coat layer. A polyurethane-based adhesive (trade name: A-3210 / A-3075, manufactured by Mitsui Chemicals, Inc.) was extruded as the adhesive layer on the vapor deposition layer, and an oil-resistant decorative paper was obtained in the same manner as in Example 1, except that the vapor deposition layer and a low-density polyethylene resin (LDPE) film (trade name: Novattic LC-600A, manufactured by Japan Polyethylene Corporation) as the sealant layer were laminated via the above polyurethane-based adhesive. The thickness of the adhesive layer was 5 μm. The mass of the paper in the entire oil-resistant decorative paper was 57% by mass.

[0084] (Example 10) An oil-resistant decorative paper was obtained in the same manner as in Example 1, except that the anchor coat layer was formed using a polyvinyl alcohol-based resin (saponification degree: 98%, polymerization degree: 500) instead of the coating liquid containing a salt of a carboxyl group. The mass of the paper in the entire oil-resistant decorative paper was 53% by mass.

[0085] (Example 11) An oil-resistant decorative paper was obtained in the same manner as in Example 1, except that the anchor coat layer was formed using a polyvinyl alcohol-based resin (saponification degree: 88%, polymerization degree: 500) instead of the coating liquid containing a salt of a carboxyl group. The mass of the paper in the entire oil-resistant decorative paper was 53% by mass.

[0086] (Example 12) An oil-resistant decorative paper was obtained in the same manner as in Example 1, except that the anchor coat layer was formed using a modified polyvinyl alcohol-based resin (trade name: Exceval AQ4104, manufactured by Kuraray Co., Ltd.) instead of the coating liquid containing a salt of a carboxyl group. The mass of the paper in the entire oil-resistant decorative paper was 53% by mass.

[0087] (Example 13) An oil-resistant decorative paper was obtained in the same manner as in Example 10, except that the vapor deposition layer was made of silica instead of AL. The mass of the paper in the entire oil-resistant decorative paper was 53% by mass.

[0088] (Example 14) An oil-resistant decorative paper was obtained in the same manner as in Example 10, except that the adhesive layer was formed using a solventless laminating adhesive (trade name: EA-N370A / B, manufactured by Toyo Ink Co., Ltd.) instead of a two-component urethane-based adhesive (Takelac A525 / Takenate A52). The mass of the paper in the entire oil-resistant decorative paper was 53% by mass.

[0089] (Example 15) A polyurethane-based adhesive (A-3210 / A-3075, manufactured by Mitsui Chemicals, Inc.) was extruded as an adhesive layer onto the vapor deposition layer, and the vapor deposition layer and a low-density polyethylene resin (LDPE) film (trade name: Novatic LC-600A, manufactured by Japan Polyethylene Corporation) as a sealant layer were laminated via the above polyurethane-based adhesive (A-3210 / A-3075) in the same manner as in Example 10 to obtain an oil-resistant decorative paper. The thickness of the adhesive layer was 0.2 μm. The mass of the paper in the entire oil-resistant decorative paper was 57% by mass.

[0090] (Comparative Example 1) The anchor coat layer is made of a urethane-curable acrylic resin which is a cured product of an acrylic polyol (an acrylic polyol is a polymer of an acrylic acid derivative monomer or a polymer of an acrylic acid derivative monomer and other monomers, having a hydroxyl group at the terminal) and a polyisocyanate. The thickness of the adhesive layer is 0.2 μm. An oil-resistant decorative paper was obtained in the same manner as in Example 1 except that a low-density polyethylene resin (LDPE) film (trade name: Novatic LC-600A, manufactured by Nippon Polyethylene Co., Ltd.) was used as the sealant layer. The mass of the paper in the whole oil-resistant decorative paper was 57% by mass.

[0091] (Comparative Example 2) An oil-resistant decorative paper was obtained in the same manner as in Comparative Example 1 except that the thickness of the anchor coat layer was 1 μm. The mass of the paper in the whole oil-resistant decorative paper was 57% by mass.

[0092] The following measurement and evaluation results are shown in Tables 1 to 3 described later together with the configurations of the oil-resistant decorative papers of each Example and Comparative Example.

[0093] (Measurement of water vapor permeability) The water vapor permeability of the oil-resistant decorative papers according to each Example and Comparative Example was measured by the MOCON method. The measurement conditions were a temperature of 40°C and a relative humidity of 90%. While rolling a 600 g roller at a speed of 300 mm / min, a crease was made on the oil-resistant decorative paper, and the water vapor permeability of the oil-resistant decorative paper after opening was also measured in the same manner. "Outside fold" in Tables 1 to 3 indicates the oil-resistant decorative paper after valley-folding the oil-resistant decorative paper as viewed from the paper base material side. The results in Tables 1 to 3 are expressed in the unit [g / m 2 ·day].

[0094] (Observation of the bent part of the decorative board) After adhering the oil-resistant decorative papers according to each Example and Comparative Example to one side of a wood-based substrate (MDF) using a two-component adhesive, a V-shaped groove was cut, and the wood-based substrate was folded along the groove to create a V-cut processed member. The surface state and the presence or absence of cracks of the oil-resistant decorative paper at the inverted V part and the pin angle part of the V-cut processed member were visually observed.

[0095] (Oil resistance test) (1) Salad oil dropping test: 1 ml of salad oil dyed with Sudan black (C29H24N6) was dropped onto the surface of the oil-resistant cosmetic paper according to each example and comparative example, covered with a watch glass for 8 hours, and then left standing. After that, the salad oil was wiped off, and the presence or absence of oil penetration was observed. (2) Hand cream evaluation test: Hand cream (Nivea cream) (registered trademark) was dropped onto the surface of the oil-resistant cosmetic paper according to each example and comparative example, left standing for 8 hours, and then the hand cream was wiped off, and the presence or absence of penetration was observed. The results of the oil resistance test in (2) above were evaluated according to the following criteria. ◎: Oil penetration, etc. cannot be confirmed visually. 〇: Oil penetration, etc. can be slightly confirmed visually, but there is no problem in use. △: Oil penetration, etc. can be confirmed visually, but there is no problem in use. ×: Oil penetration, etc. can be confirmed visually and is not suitable for use.

[0096] (3) Evaluation of oil resistance performance: Based on the values measured according to JAPAN TAPPI paper pulp test method, NO.41:20000, the oil resistance performance of the oil-resistant cosmetic paper was evaluated. ◎: 4 or more 〇: 2 or more and less than 4 △: 1 or more and less than 2 ×: Less than 1

[0097]

Table 1

[0098]

Table 2

[0099]

Table 3

[0100] As shown in Tables 1 to 3, the oil-resistant cosmetic papers 10 of Examples 1 to 15 had good results in all of (1) the salad oil dropping test, (2) the hand cream evaluation test, and (3) the evaluation of oil resistance performance, and it was found that they had high oil resistance. Also, in the oil-resistant cosmetic papers 10 of Examples 1 to 15, no cracks occurred even in the bent portion after V-cut processing.

[0101] Furthermore, the oil-resistant cosmetic papers 10 of Examples 1 to 15 had low water vapor permeability not only before bending (initial) but also after bending, and had good water vapor barrier properties. In this example, if the water vapor permeability was 5 g / m 2 ·24 h or less, it was evaluated as "qualified" because it had sufficient water vapor barrier properties and had no problems in use.

[0102] Thus, according to the oil-resistant cosmetic paper according to the embodiment of the present disclosure, it is possible to expect an effect of having high oil resistance, suppressing the occurrence of cracks during bending processing, and contributing to the reduction of the amount of plastic material used.

[0103] Also, for example, the present disclosure can adopt the following configurations. (1) It includes a paper base material, an anchor coat layer, a vapor deposition layer, an adhesive layer, and a sealant layer in this order, The anchor coat layer contains at least one of a polyvinyl alcohol-based resin and a polyolefin having a polar group, an oil-resistant cosmetic paper. (2) The anchor coat layer contains the polyolefin having a polar group, The polyolefin having a polar group has at least one of a carboxyl group, a salt of a carboxyl group, a carboxylic anhydride, and a carboxylic acid ester, the oil-resistant cosmetic paper described in (1) above. (3) The anchor coat layer contains the polyolefin having a polar group, The oil-resistant decorative paper according to the above (1), wherein the polyolefin having the polar group is a copolymer of an acrylate ester and maleic anhydride. (4) The anchor coat layer contains the polyolefin having the polar group, The oil-resistant decorative paper according to the above (1), wherein the polyolefin having the polar group is an ethylene-vinyl acetate copolymer. (5) The anchor coat layer contains the polyolefin having the polar group, The oil-resistant decorative paper according to the above (1), wherein the polyolefin having the polar group is an ethylene-glycidyl methacrylate copolymer. (6) The oil-resistant decorative paper according to any one of the above (1) to (5), wherein the anchor coat layer contains the polyvinyl alcohol-based resin. (7) The adhesive layer is a cured product of a resin composition containing an epoxy resin and an epoxy resin curing agent, The oil-resistant decorative paper according to any one of the above (1) to (6), wherein the epoxy resin curing agent is a reaction product of metaxylylenediamine or paraxylylenediamine and the unsaturated carboxylic acid represented by the above formula (1) and / or its derivative. (8) The oil-resistant decorative paper according to any one of the above (1) to (6), wherein the adhesive layer is a cured product of a resin composition containing a polyol having two or more hydroxyl groups in one molecule and an isocyanate compound having two or more isocyanate groups in one molecule. (9) The oil-resistant decorative paper according to any one of the above (1) to (8), wherein the mass of the paper base material is 50% by mass or more based on the mass of the entire oil-resistant decorative paper. (10) The oil-resistant decorative paper according to any one of the above (1) to (9), further comprising a decorative layer in which a pattern printing layer and a surface protection layer are laminated in this order on the sealant layer. (11) A substrate, A decorative panel comprising the oil-resistant decorative paper according to any one of (1) to (10) pasted on the substrate. (12) The decorative panel according to (11), wherein the substrate has a bent portion.

Explanation of reference numerals

[0104] 10 Oil-resistant decorative paper 1 Paper substrate 2 Anchor coat layer 3 Vapor deposition layer 4 Adhesive layer 5 Sealant layer 6 Pattern printing layer 6a Undercoat coloring layer 6b Pattern pattern layer 7 Surface protection layer 7a First protection layer 7b Second protection layer 20 Decorative panel 9 Substrate

Claims

1. An oil-resistant decorative paper comprising a paper substrate, an anchor coat layer, a vapor deposition layer, an adhesive layer, and a sealant layer, in this order. The anchor coat layer contains at least one of a polyvinyl alcohol-based resin and a polyolefin having a polar group.

2. The anchor coat layer contains the polyolefin having a polar group. The polyolefin having a polar group has at least one of a carboxyl group, a salt of a carboxyl group, a carboxylic anhydride, and a carboxylic acid ester. The oil-resistant decorative paper according to Claim 1.

3. The anchor coat layer contains the polyolefin having a polar group. The polyolefin having a polar group is a copolymer of an acrylate and maleic anhydride. The oil-resistant decorative paper according to Claim 1.

4. The anchor coat layer contains the polyolefin having a polar group. The polyolefin having a polar group is an ethylene-vinyl acetate copolymer. The oil-resistant decorative paper according to Claim 1.

5. The anchor coat layer contains the polyolefin having a polar group. The polyolefin having a polar group is an ethylene-glycidyl methacrylate copolymer. The oil-resistant decorative paper according to Claim 1.

6. The oil-resistant decorative paper according to Claim 1, wherein the anchor coat layer contains the polyvinyl alcohol-based resin.

7. The adhesive layer is a cured product of a resin composition containing an epoxy resin and an epoxy resin curing agent. The epoxy resin curing agent is a reaction product of metaxylylenediamine or paraxylylenediamine and an unsaturated carboxylic acid represented by the following formula (1) and / or its derivative. The oil-resistant decorative paper according to Claim 1. 【Chemical 1】 [In formula (1), R1 represents an alkyl group having 1 to 8 carbon atoms, an aralkyl group having 1 to 8 carbon atoms, or an aryl group.]

8. The adhesive layer is a cured product of a resin composition containing a polyol having two or more hydroxyl groups in one molecule and an isocyanate compound having two or more isocyanate groups in one molecule. The oil-resistant decorative paper according to Claim 1.

9. The mass of the paper substrate is 50% by mass or more based on the mass of the entire oil-resistant decorative paper. The oil-resistant decorative paper according to Claim 1.

10. The oil-resistant decorative paper further comprises a decorative layer in which a pattern printing layer and a surface protection layer are laminated in this order on the sealant layer. The oil-resistant decorative paper according to Claim 1.

11. A substrate A decorative panel comprising: an oil-resistant decorative paper according to any one of claims 1 to 10 attached to the substrate.

12. The decorative panel according to claim 11, wherein the substrate has a bent portion.

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