JP2014040054A - Decorative sheet having anti-allergenic performance and aldehyde adsorption performance, and decorative plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet which can simultaneously and effectively exert both of anti-allergenic performance and aldehyde adsorption performance.SOLUTION: The decorative sheet is formed by stacking an aldehyde adsorption layer formed of a resin composition containing an aldehyde adsorbent and a curable resin, and an anti-allergenic functional layer formed of a resin composition containing an anti-allergenic agent and a curable resin, on a substrate sheet in sequence. Accordingly, the decorative sheet can simultaneously and effectively exert both of anti-allergenic performance and aldehyde adsorption performance.

Description

  The present invention relates to a decorative sheet that effectively exhibits antiallergen performance and aldehyde adsorption performance, and a decorative board using the decorative sheet.

  In recent years, the number of people suffering from allergic diseases is increasing, and in order to prevent the development of allergic diseases, it is required to remove or inactivate allergens such as mites and pollen that cause allergic diseases from indoor spaces. .

  Formaldehyde is known to show carcinogenicity, and further, it has been reported that it promotes the production of IgE antibody in vivo and worsens allergic symptoms (see Non-Patent Document 1). In recent years, although many of the building materials for interior use distributed in the country have reduced formaldehyde emission, some products brought into the room, especially imported furniture, still emit formaldehyde. For this reason, it is also required to quickly reduce formaldehyde from the indoor space.

  Therefore, in the field of building materials for interior and exterior such as flooring and wall materials of buildings, development of building materials that can effectively exhibit antiallergen performance and aldehyde adsorption performance and can form comfortable and healthy indoor spaces is desired. .

  Conventionally, as a building material to which antiallergen performance is imparted, a building material obtained by coating an antiallergen agent made of zirconium salt on the surface of a wood material such as a wood material or plywood is known (for example, a patent document). 1). In such a building material, since the anti-allergen agent was simply applied, it was easy to peel off and poor in durability. Therefore, in order to solve this problem, a photocurable resin composition in which a water-insoluble high molecular weight antiallergen agent having a phenolic hydroxyl group is mixed with a photopolymerizable oligomer, etc. is applied to a wooden base material and photocured. Floor materials have been developed (see, for example, Patent Document 2). Moreover, as a building material to which formaldehyde adsorption performance is imparted, a decorative sheet in which a protective layer containing vegetable tannin is laminated on a base material layer has been reported (see Patent Document 3). Furthermore, antibacterial / antiviral, antiallergenic and antiallergenic properties can be achieved by coating the building material with a resin coating containing a functional material having at least one of antibacterial / antiviral, antiallergenic and deodorant functions. In addition, it has been reported that one or more functionalities among deodorant properties can be provided (see Patent Document 4).

  However, no specific examination has been made on a decorative sheet that can effectively exhibit both antiallergen performance and aldehyde adsorption performance simultaneously.

"The world's first demonstration" Flash Streamer "discharge technology suppresses adjuvant effect", [Online], June 9, 2005, Daikin Industries, Ltd. [Search February 9, 2012], Internet <http: / /www.daikin.co.jp/press/2005/050609_a/index.html>

JP 2001-212806 A JP 2008-239721 A JP 2000-177088 A JP 2008-80210 A

  When we examined the combination of anti-allergen performance and aldehyde adsorption performance on decorative sheets used for interior building materials such as flooring and wall materials, both anti-allergen and aldehyde adsorbents were applied to the surface layer of the decorative sheet. When mixed and coexisted, it was confirmed that the anti-allergen performance by the anti-allergen agent was reduced (see Comparative Example 3 described later), and it was found that both the anti-allergen performance and the aldehyde adsorption performance could not be effectively exhibited simultaneously.

  Then, an object of this invention is to provide the decorative sheet which can exhibit both anti-allergen performance and aldehyde adsorption | suction performance effectively simultaneously, and the decorative board using the said decorative sheet.

  The present inventor has intensively studied to solve the above-mentioned problems, and as a result, an aldehyde adsorption layer formed of a resin composition containing an aldehyde adsorbent and a curable resin, an antiallergen agent, and a cure on a base sheet. It has been found that a decorative sheet in which anti-allergen functional layers formed of a resin composition containing a functional resin are sequentially laminated can effectively exhibit both anti-allergen performance and aldehyde adsorption performance simultaneously. The present invention has been completed by further studies based on such knowledge.

That is, this invention provides the decorative sheet and the decorative board of the aspect hung up below.
Item 1. On the base sheet, an aldehyde adsorption layer formed of a resin composition containing an aldehyde adsorbent and a curable resin, and an anti-allergen functional layer formed of a resin composition containing an anti-allergen agent and a curable resin, in this order, A decorative sheet characterized by being laminated.
Item 2. Item 2. The decorative sheet according to Item 1, wherein the curable resin used for forming the aldehyde adsorbing layer and the anti-allergen functional layer is an electron beam curable resin.
Item 3. In the resin composition used for the formation of the aldehyde adsorption layer, 2 to 4 functional urethane (meth) acrylate oligomer is 50 parts by mass or more with respect to 100 parts by mass of the total amount of the curable resin contained in the resin composition. Item 3. The decorative sheet according to Item 1 or 2, which is contained in a proportion.
Item 4. Item 4. The decorative sheet according to any one of Items 1 to 3, wherein the anti-allergen agent is a compound having a phenolic hydroxyl group.
Item 5. Item 5. The decorative sheet according to any one of Items 1 to 4, wherein the anti-allergen agent is a compound in which a compound having a phenolic hydroxyl group is supported on an inorganic solid acid.
Item 6. Item 6. The decorative sheet according to any one of Items 1 to 5, wherein the aldehyde adsorbent is an aldehyde adsorbent capable of adsorbing aldehyde by chemical adsorption.
Item 7. Item 7. A decorative board obtained by attaching the decorative sheet according to any one of items 1 to 6 to an adherend.
Item 8. The manufacturing method of a decorative sheet including the following first step and second step:
On the base sheet 1, a resin composition containing an aldehyde adsorbent and a curable resin is applied and cured, and a resin composition containing an antiallergen agent and a curable resin is applied, Second step for curing.

  According to the decorative sheet and decorative plate of the present invention, since both antiallergen performance and aldehyde adsorption performance can be effectively exhibited, a comfortable and healthy indoor space can be formed. Moreover, since the decorative sheet and decorative plate of the present invention can also have practically required contamination resistance, they can also have practical performance required as building materials, particularly interior building materials.

It is a figure which shows the cross-sectional structure about an example of the aspect of the decorative sheet of this invention. It is a figure which shows the cross-sectional structure about an example of the aspect of the decorative sheet of this invention. It is a figure which shows the cross-sectional structure about an example of the aspect of the decorative sheet of this invention.

1. Decorative sheet The decorative sheet of the present invention comprises an aldehyde adsorbing layer 2 formed on a base sheet 1 by a resin composition containing an aldehyde adsorbent and a curable resin, and a resin composition comprising an antiallergen agent and a curable resin. The anti-allergen functional layer 3 formed by the above is laminated in order. Hereinafter, the decorative sheet of the present invention will be described in detail.

(1) Laminated structure The decorative sheet of the present invention has a laminated structure in which an aldehyde adsorbing layer 2 and an antiallergen functional layer 3 are sequentially laminated on a base sheet 1. The decorative sheet of the present invention is based on the fact that the aldehyde adsorbing layer 2 is formed between the base sheet 1 and the anti-allergen functional layer 3, and the anti-allergen functional layer 3 forms the outermost surface. One or two or more other layers may be provided between the material sheet 1 and the aldehyde adsorption layer 2 and / or between the aldehyde adsorption layer 2 and the anti-allergen functional layer 3. For example, between the base material sheet 1 and the aldehyde adsorbing layer 2 and / or between the aldehyde adsorbing layer 2 and the anti-allergen functional layer 3, in order to improve the adhesion, a primer layer as necessary 4 may be provided. Also, for example, printing between the base sheet 1 and the aldehyde adsorbing layer 2 or between the aldehyde adsorbing layer 2 and the anti-allergen functional layer 3 is performed as necessary for the purpose of improving the design of the decorative sheet. A layer 5 may be provided. Moreover, when using the sheet | seat of the multilayer structure which consists of two or more resin sheets as the base material sheet 1, you may provide the printing layer 5 between the resin sheets in a base material sheet as needed.

  Moreover, the backer layer 6 which consists of a resin layer is laminated | stacked on the back surface (surface on the opposite side with respect to the surface which laminates | stacks an aldehyde adsorption layer) as needed in the decorative sheet of this invention. Also good.

  1-3, the schematic diagram of the cross-sectional structure is shown about an example of the aspect of the decorative sheet of the present invention. The decorative sheet shown in FIG. 1 has a laminated structure in which an aldehyde adsorbing layer 2 and an antiallergen functional layer 3 are sequentially laminated on a base sheet 1. The decorative sheet shown in FIG. 2 has a laminated structure in which a printed layer 5, a primer layer 4, an aldehyde adsorbing layer 2, and an antiallergen functional layer 3 are laminated on a base sheet 1 in this order. In the decorative sheet shown in FIG. 3, the base sheet 1 is a multi-layered sheet in which the resin sheet 11 a, the printing layer 5, the adhesive layer 12, and the resin sheet 11 b are sequentially laminated. It has a laminated structure in which a primer layer 4, an aldehyde adsorption layer 2, a primer layer 4, and an anti-allergen functional layer 3 are laminated in order.

(2) Composition and forming method of each layer Hereinafter, the composition and forming method of each layer constituting the decorative sheet of the present invention will be described.

[Base Material Sheet 1]
The material of the base sheet 1 used in the present invention is not particularly limited and may be made of resin or fiber. However, when the decorative sheet of the present invention is used as a floor decorative sheet, the resin base material is used. When used as a decorative sheet for wallpaper, a fibrous base material is preferable.

  When using a resin base material as the base material sheet 1, it is not particularly limited as long as it is a resin sheet applicable to a decorative sheet, but a resin sheet preferably made of a thermoplastic resin is mentioned. Examples of the thermoplastic resin constituting the base sheet 1 include polyolefin resins such as polyester resins, polypropylene resins, and polyethylene resins; (meth) acrylic resins, polyurethane resins, polyester resins, polyamide resins, and the like. . Among these, when using the decorative sheet of the present invention as a flooring material, in terms of cost and sheet flexibility, preferably a polyolefin-based resin, and when characteristics such as scratch resistance are required, A polyester resin is preferable. Moreover, the resin sheet used as the base material sheet 1 may be colored or non-colored.

  Moreover, when using a resin base material as the base material sheet layer 1, the said base material sheet 1 may be a sheet | seat of the single layer structure which consists of one resin sheet, and two or more resin sheets are laminated | stacked. It may also be a multi-layered sheet. When a resin sheet having a multilayer structure is used as the base sheet, the two or more resin sheets may be composed of the same resin component or may be composed of different resin components.

  For example, when a multi-layered resin sheet is used as the base sheet 1, an easy-adhesion layer is formed on the surface of the first resin sheet by performing corona discharge treatment, plasma treatment, etc. as necessary, and further required After the adhesive layer is provided according to the process, the second resin sheet is bonded and pressed by a lamination method such as extrusion lamination, dry lamination, wet lamination, thermal lamination, etc. It is done.

  The adhesive layer provided as necessary when using a resin sheet having a multilayer structure is made of, for example, an adhesive such as urethane, acrylic, acrylic / polyurethane, polyester, polyamide, polystyrene, or cellulose. It is formed by using. These adhesives may be used individually by 1 type, and may be used in combination of 2 or more type.

Moreover, if a fibrous base material is used as the base material sheet 1, any material that is usually used as wallpaper paper may be used. The fibrous base material may contain a flame retardant, an inorganic agent, a dry paper strength enhancer, a wet paper strength enhancer, a colorant, a sizing agent, a fixing agent, and the like as necessary. Specific examples of fiber base materials include general paper for wallpaper (pulp-based sheets sized with a sizing agent), flame-retardant paper (pulp-based sheets such as guanidine sulfamate and guanidine phosphate) Inorganic paper containing inorganic additives such as aluminum hydroxide and magnesium hydroxide; fine paper; thin paper; fiber mixed paper (mixed synthetic fiber with pulp) and the like. The basis weight of the fibrous base material is not particularly limited, for example, 50 to 300 g / m ² approximately, and preferably about 50 to 120 / m ^2.

  The base sheet 1 may be subjected to an easy adhesion treatment such as a corona discharge treatment or a plasma treatment on the surface on which the aldehyde adsorption layer 2 is laminated, as necessary, in order to enhance the adhesion.

  Although the thickness of the base material sheet 1 can be suitably set according to the use etc. of the decorative sheet of this invention, generally 20-300 micrometers is preferable. In addition, when using the resin sheet of a multilayer structure as the base material sheet 1, the sum total of the thickness of the resin sheet which comprises each layer should just be in the said range, and the thickness of each resin sheet may be the same or different. .

[Aldehyde adsorption layer 2]
The aldehyde adsorption layer 2 is a layer provided between the base sheet 1 and the anti-allergen functional layer 3. The aldehyde adsorption layer 2 is formed of a resin composition containing an aldehyde adsorbent and a curable resin.

  The aldehyde adsorbent may be any substance that adsorbs aldehydes such as formaldehyde and acetaldehyde, and preferably a substance capable of adsorbing formaldehyde. The aldehyde adsorbent may be an organic compound or an inorganic compound, and the aldehyde adsorption mechanism may be either chemical adsorption or physical adsorption. Here, “chemical adsorption” means adsorption of an aldehyde by a chemical bond, and “physical adsorption” means adsorption of an aldehyde by van der Waals force. Hereinafter, in the present specification, an aldehyde adsorbent capable of adsorbing aldehyde by chemical adsorption is referred to as “aldehyde chemical adsorbent”, and an aldehyde adsorbent capable of adsorbing aldehyde by physical adsorption is referred to as “aldehyde physical adsorbent”. Sometimes written.

  Examples of the aldehyde chemical adsorbent include nitrogen-containing compounds such as amines, ureas, amides, imides, hydrazides, azoles and azines.

Examples of the amines include hydroxylamine, ethanolamine, dimethylamine, diethylamine, isopropylamine, proline, hydroxyproline, dicyanodiamide, ethyleneimine, ethylenediamine, propylenediamine, diethylenetriamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, 1 , 2-diaminopropane, triethylenetetramine, tetraethylenepentamine, iminobispropylamine, tetramethylenediamine, guanidine carbonate, glycine, alanine, sarcosine, glutamic acid, hexamethylenediamine, melamine, morpholine, 2-amino-4,5 - dicyano imidazole, 3- azahexane-1,6-diamine, sodium _{aminobenzoate, H 2 N- (CH 2 CH} 2 -NH) n- Examples include amine compounds represented by CH ₂ CH ₂ NH ₂ (n is an integer of 0 or more and 3 or less), aniline, and the like.

  Examples of the ureas include urea, thiourea, methylurea, ethyleneurea, acetylurea, azodicarbonamide and the like.

  Examples of the amides include formamide, acetamide, succinic acid amide, dicyandiamide and the like.

  Examples of the imides include succinimide, hydantoin, and isocyanuric acid.

  Examples of hydrazides include lauric acid hydrazide, salicylic acid hydrazide, form hydrazide, acetohydrazide, propionic acid hydrazide, p-hydroxybenzoic acid hydrazide, naphthoic acid hydrazide, 3-hydroxy-2-naphthoic acid hydrazide, oxalic acid dihydrazide, and malonic acid dihydrazide. Succinic acid dihydrazide, adipic acid dihydrazide, azelaic acid dihydrazide, sebacic acid dihydrazide, dodecane-2 acid dihydrazide, maleic acid dihydrazide, fumaric acid dihydrazide, diglycolic acid dihydrazide, tartaric acid dihydrazide, diphthalide diacid dihydrazide, diphthalide diacid dihydrazide , Dimer acid dihydrazide, 2,6-naphthoic acid dihydrazide and the like.

  Examples of the azoles and azines include 3-methyl-5-pyrazolone, 1,3-dimethyl-5-pyrazolone, 3-methyl-1-phenyl-5-pyrazolone, 3-phenyl-6-pyrazolone, and 3-methyl. Pyrazolones such as -1- (3-sulfophenyl) -5-pyrazolone, pyrazole, 3-methylpyrazole, 1,4-dimethylpyrazole, 3,5-dimethylpyrazole, 3,5-dimethyl-1-phenylpyrazole, 3-aminopyrazole, 5-amino-3-methylpyrazole, 3-methylpyrazole-5-carboxylic acid, 3-methylpyrazole-5-carboxylic acid methyl ester, 3-methylpyrazole-5-carboxylic acid ethyl ester, 1, 2,3-triazole, 1,2,4-triazole, 3-n-butyl, 5-dimethyl-1,2,4- Riazole, 3,5-di-n-butyl-1,2,4-triazole, 3-mercapto-1,2,4-triazole, 3-amino-1,2,4-triazole, 4-amino-1, 2,4-triazole, 3,5-diamino-1,2,4-triazole, 5-amino-3-mercapto-1,2,4-triazole, 3-amino-5-phenyl-1,2,4- Triazole, 3,5-diphenyl-1,2,4-triazole, 1,2,4-triazol-3-one, urazole (3,5-dioxy-1,2,4-triazole), 1,2,4 -Triazole-3-carboxylic acid, 1-hydroxybenzotriazole, 5-hydroxy-7-methyl-1,3,8-triazaindolizine, 1H-benzotriazole, 4-methyl-1H-benzotria Lumpur, 5-methyl -1H- benzotriazole, 6-methyl-8-hydroxy-triazolopyridazine, 4,5-dichloro-3-pyridazine, maleic hydrazide, 6-methyl-3-pyridazone and the like.

  The aldehyde chemical adsorbent may be one in which the nitrogen-containing compound is supported on a porous material. Examples of the porous material used for supporting the nitrogen-containing compound include silicon dioxide, activated carbon, sepiolite, mica and the like. Among these porous materials, silicon dioxide is preferably used from the viewpoint of imparting excellent aldehyde adsorption performance.

  Examples of the aldehyde physical adsorbent include inorganic compounds such as zeolite (mordenite type, Y type, ZSM-5 type, etc.), aluminum phosphate, and hydroxyapatite.

  These aldehyde adsorbents may be used alone or in combination of two or more. Among these aldehyde adsorbents, from the viewpoint of further improving the aldehyde adsorption performance, preferably an aldehyde chemical adsorbent, more preferably an aldehyde chemical adsorbent in which the nitrogen-containing compound is supported on a porous material. It is done.

  The average particle diameter of the aldehyde adsorbent is not particularly limited, but may be, for example, 0.01 to 50 μm, preferably 0.05 to 30 μm.

  The content of the aldehyde adsorbent in the aldehyde adsorbing layer 2 is appropriately set according to the type of aldehyde adsorbent to be used. For example, the aldehyde adsorbent is 0.5 per 100 parts by mass of the curable resin described later. About 50 mass parts, Preferably about 1-30 mass parts is mentioned.

  Specific examples of the curable resin used for the aldehyde adsorption layer 2 include an ionizing radiation curable resin and a thermosetting resin (including a room temperature curable resin and a two-component reaction curable resin). Among these, an ionizing radiation curable resin is preferable because it has a high curing rate and good workability, and it is easy to adjust the physical properties of the resin such as flexibility and hardness.

  Specific examples of the ionizing radiation curable resin include those obtained by appropriately mixing monomers, oligomers, and / or prepolymers having a polymerizable unsaturated bond or an epoxy group in the molecule. Here, ionizing radiation means an electromagnetic wave or charged particle beam having an energy quantum capable of polymerizing or cross-linking molecules, and usually ultraviolet (UV) or electron beam (EB) is used. Also included are electromagnetic waves such as rays and γ rays, and charged particle rays such as α rays and ion rays. The ionizing radiation curable resin is preferably one that undergoes radical polymerization (curing) by electron beam irradiation.

  As said monomer, the (meth) acrylate monomer which has a radically polymerizable unsaturated group in a molecule | numerator is suitable, and a polyfunctional (meth) acrylate monomer is especially preferable. The polyfunctional (meth) acrylate monomer may be a (meth) acrylate monomer having two or more polymerizable unsaturated bonds in the molecule. In the present specification, “(meth) acrylate” means “acrylate or methacrylate”, and other similar ones have the same meaning.

  Examples of the oligomer include urethane (meth) acrylate oligomer, epoxy (meth) acrylate oligomer, polyester (meth) acrylate oligomer, polyether (meth) acrylate oligomer, polybutadiene (meth) acrylate oligomer, and silicone (meth) acrylate. Examples include oligomers and aminoplast resin (meth) acrylate oligomers. Among these, urethane (meth) acrylate oligomers are preferable from the viewpoint of more effectively exhibiting aldehyde adsorption performance.

  The urethane (meth) acrylate oligomer can be obtained, for example, by esterifying a polyurethane oligomer obtained by reaction of polyether polyol or polyester polyol and polyisocyanate with (meth) acrylic acid, and is a radically polymerizable unsaturated group. It is a compound which has this. Although it does not restrict | limit especially about the number of radically polymerizable unsaturated groups of the urethane (meth) acrylate oligomer used for an aldehyde adsorption layer, For example, a 2-10 piece, ie, 2-10 functional thing, is mentioned. In particular, from the viewpoint of more effectively exhibiting the aldehyde adsorption function, the urethane (meth) acrylate oligomer is preferably 2 to 6 functional, more preferably 2 to 4 functional.

  These curable resins may be used alone or in a combination of two or more. Among these curable resins, from the viewpoint of further enhancing the aldehyde adsorption performance, a urethane (meth) acrylate oligomer is preferable, and a bifunctional urethane (meth) acrylate oligomer is more preferable. In particular, per 100 parts by mass of the curable resin contained in the aldehyde adsorbing layer, the difunctional to tetrafunctional urethane (meth) acrylate oligomer is 50 parts by mass or more, preferably 60 to 100 parts by mass, and more preferably 70 to 100 parts by mass. When it is contained in a proportion, the aldehyde adsorption performance can be more effectively exhibited.

  The aldehyde adsorbing layer 2 has a weather resistance improver, an abrasion resistance improver, a polymerization inhibitor, a crosslinking agent, an infrared absorber, an antistatic agent, an adhesion improver, depending on the desired physical properties to be provided. Includes various additives such as leveling agents, thixotropic agents, coupling agents, plasticizers, antifoaming agents, fillers, solvents, colorants, gloss modifiers, antibacterial agents, antifungal agents, antifouling agents, etc. You may go out.

  The aldehyde adsorbing layer 2 is a gravure coat, bar coat, roll coat, reverse roll coat, comma coat, flow coater, blown resin composition containing a curable resin, an aldehyde adsorbent, and various additives as required. The resin composition is applied after coating by a plating method, an airless spray method, an air spray method, a brush coating, a trowel coating, a dipping method, a lifting method, a nozzle method, a winding method, a sink method, a piling method, a patching method, etc. It is formed by curing. The conditions for curing the resin composition are appropriately set according to the type of curable resin to be used, etc., for example, if ionizing radiation curable resin is used and cured by electron beam irradiation, acceleration The voltage is about 70 to 300 kV and the irradiation dose is about 5 to 300 kGy (0.5 to 30 Mrad), preferably about 5 to 70 kGy (0.5 to 7 Mrad).

  Although it does not restrict | limit especially about the thickness of the aldehyde adsorption layer 2, For example, 1-50 micrometers, Preferably 5-30 micrometers is mentioned.

[Anti-allergen functional layer 3]
The anti-allergen functional layer 3 is laminated on the aldehyde adsorption layer 2 to form the outermost surface layer of the decorative sheet of the present invention. The anti-allergen functional layer 2 is formed of a resin composition containing an anti-allergen agent and a curable resin.

  The anti-allergen agent used in the anti-allergen functional layer 2 is not particularly limited as long as it can be decomposed or inactivated against various allergens such as mites and pollen. For example, a compound containing a hydroxyl group (that is, a hydroxyl group) Containing compound), preferably a compound having a phenolic hydroxyl group. Specific examples of the compound having a phenolic hydroxyl group that can be used as an antiallergen include compounds having a plurality of phenolic hydroxyl groups in the molecule, that is, a hydroxyl group bonded to an aromatic ring such as a benzene ring or a naphthalene ring. . Among the compounds having a phenolic hydroxyl group, polyparavinylphenol; poly (3,4,5-hydroxybenzoic acid) is preferable from the viewpoint of having excellent antiallergenicity and being easily and inexpensively available industrially. Vinyl acrylate); low molecular weight polyphenols such as epicatechin, gallotannin, epigallocatechin, epicatechin gallate, epigallocatechin gallate, catechin; and high molecular weight polyphenols such as tannic acid. Among these, tannic acid is more preferable from the viewpoint of exhibiting superior antiallergen performance. These anti-allergen agents may be used alone or in combination of two or more.

  Moreover, as said allergen agent, it can also obtain as a commercial item, For example, "Marcalinker M (brand name)" (Maruzen Petrochemical Co., Ltd.) etc. are mentioned as a commercial item about polyparavinylphenol.

  Furthermore, as a suitable example of the anti-allergen agent, a compound in which the compound having a phenolic hydroxyl group is supported on an inorganic solid acid can be mentioned. In such an anti-allergen agent, the compound having a phenolic hydroxyl group supported on an inorganic solid acid may be used singly or in combination of two or more of the above-mentioned compounds. Good.

  The inorganic solid acid is an inorganic substance, and is a compound having an acid site or an active site that releases hydrogen ions on its surface and develops acidity. Examples of the inorganic solid acid include zeolites such as H-substituted Y zeolite and H-substituted ZSM-5 zeolite; phosphates such as zirconium phosphate, aluminum phosphate, tin phosphate, cerium phosphate, and titanium phosphate Antimonic acid; and composite oxides such as silica alumina, silica titania, silica zirconia, titania alumina, titania zirconia, and the like. Among these inorganic solid acids, from the viewpoint of exerting superior antiallergen performance, preferably zeolites, composite oxides, more preferably zirconium phosphate, particularly preferably layered phosphoric acid having a crystal form of a layered structure. Zirconium is mentioned.

  Examples of the shape of the inorganic solid acid include powder, lump, plate, and fiber, but it is preferably powder from the viewpoint of handling. In the case of powder, the average particle diameter is not particularly limited, but for example, 0.01 to 50 μm, preferably 0.02 to 20 μm. According to the powdery inorganic solid acid having such an average particle diameter, it is easy to handle, and more excellent antiallergen performance can be obtained.

  When using an anti-allergen agent in which a compound having a phenolic hydroxyl group is supported on an inorganic solid acid, the mass ratio of the compound having a phenolic hydroxyl group and the inorganic solid acid is, for example, 10:90 to 95: 5, preferably 20: 80-80: 20, More preferably, 20: 80-40: 60 is mentioned. By satisfying such a mass ratio, particularly excellent antiallergen performance can be exhibited by the synergistic effect of the compound having a phenolic hydroxyl group and the inorganic solid acid.

  An anti-allergen agent in which a compound having a phenolic hydroxyl group is supported on an inorganic solid acid is also available as a commercial product. For example, “Alleluve (trade name)” (Toagosei Co., Ltd.) combining a polyphenol compound and a zirconium compound. (Made by company) etc. are mentioned as a commercial item.

  The content of the anti-allergen agent in the anti-allergen functional layer 3 is appropriately set according to the type of the anti-allergen agent to be used and the like. For example, the anti-allergen agent is 1 to 100 parts by mass of the curable resin described later. About 30 mass parts, Preferably about 5-15 mass parts is mentioned.

  About the kind of curable resin used for the anti-allergen functional layer 3, the thing similar to what is used with the said aldehyde adsorption layer is illustrated, but from a viewpoint of exhibiting an anti-allergen performance much more effectively. , Preferably urethane (meth) acrylate oligomers, more preferably 2 to 10 functional urethane (meth) acrylate oligomers, and particularly preferably 2 to 6 functional urethane (meth) acrylate oligomers.

  In the anti-allergen functional layer 3, the curable resin may be used alone or in combination of two or more.

  The anti-allergen functional layer 3 has a weather resistance improver, an abrasion resistance improver, a polymerization inhibitor, a crosslinking agent, an infrared absorber, an antistatic agent, and an adhesion improver depending on the desired physical properties to be provided. Various additives such as leveling agents, thixotropic agents, coupling agents, plasticizers, antifoaming agents, fillers, solvents, colorants, gloss control agents, antibacterial agents, antifungal agents, antifouling agents, etc. May be included.

  The anti-allergen functional layer 3 is formed by applying and curing a resin composition in which a curable resin, an anti-allergen agent, and various additives as necessary are mixed. The coating method, curing method, and the like used in forming the anti-allergen functional layer 3 are the same as in the case of forming the aldehyde adsorption layer 2.

  Although it does not restrict | limit especially about the thickness of an antiallergen functional layer, For example, 5-50 micrometers, Preferably 7-30 micrometers is mentioned.

[Primer layer 4]
In order to improve the adhesion between the base material sheet 1 and the anti-allergen functional layer 2 and / or between the aldehyde adsorption layer 2 and the anti-allergen functional layer 3, the primer layer 4 is used as necessary. It is a layer provided.

  The primer agent for forming the primer layer 4 is not particularly limited. For example, urethane resin, (meth) acrylic resin, (meth) acrylic-urethane copolymer resin, urethane-based resin mainly composed of acrylic polyol, and chloride. Vinyl-vinyl acetate copolymer, polyester resin, butyral resin, chlorinated polypropylene, chlorinated polyethylene and the like can be mentioned. In addition to the resin, the primer layer 4 may contain a solvent, a stabilizer, a plasticizer, a curing agent, and the like as necessary.

  The primer layer 4 can be formed by applying the primer agent as it is or in a state where it is dissolved or dispersed in a solvent, applying it by a known printing method, application method or the like, drying and curing it.

  Further, when forming the primer layer 4, the substrate sheet 1 and / or the aldehyde adsorption layer 2 can be easily subjected to corona discharge treatment, plasma treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone / ultraviolet treatment, etc. Adhesion treatment can be applied to enhance the adhesion between these and the primer layer.

  Further, when laminating the aldehyde adsorption layer 2 and / or the antiallergen function 3 layer on the primer layer 4, in order to ensure the adhesion between these layers and the primer layer 4, the surface of the primer layer 4 may be easily treated. The adhesion between the aldehyde adsorbing layer 2 and / or the anti-allergen functional layer 3 can be further enhanced by the adhesion treatment, and the primer layer 4 is kept in a semi-cured state, and then the aldehyde adsorbing layer 2 and / or After applying the resin composition for forming the anti-allergen functional layer 4, the aldehyde adsorbing layer 2 and / or the anti-allergen functional layer 3 and the primer layer 4 are integrated by curing with irradiation with ionizing radiation. It is also possible to increase the adhesion between the two.

  Although it does not restrict | limit especially as thickness of the primer layer 4, For example, 0.1-5 micrometers, Preferably 0.5-3 micrometers is mentioned.

[Print layer 5]
The printed layer 5 is a layer provided as necessary for the purpose of improving the design of the decorative sheet. The printing layer 5 can be provided between the base sheet 1 and the aldehyde adsorption layer 2 and / or between the aldehyde adsorption layer 2 and the anti-allergen functional layer 3. Moreover, when using the sheet | seat of the multilayer structure which consists of two or more resin sheets as the base material sheet 1, you may provide the printing layer 5 between the resin sheets in the base material sheet 1. FIG.

  The printing layer 5 is constituted by a concealing layer and / or a picture layer, and is formed by printing using ink and a printing machine. The concealing layer is a layer that is uniformly and uniformly coated over the entire surface, and has the effect of concealing the substrate on which the base sheet 1 or the decorative sheet is bonded, in addition to the effect of improving the design. The pattern layer is a layer in which various patterns are exposed with ink. As the pattern of the pattern layer, a grain pattern simulating the surface of a rock such as a grain pattern, marble pattern (for example, travertine marble pattern), a fabric pattern simulating a texture or cloth pattern, a tiled pattern, a brickwork pattern, etc. There are also patterns such as parquet and patchwork that combine these. From the viewpoint of improving design properties, it is preferable to provide a pattern layer and a concealing layer. Examples of the method for forming the print layer 5 include gravure printing, flexographic printing, and rotary printing such as silk screen printing, sheet-fed printing, and the like.

  Moreover, as ink used for formation of the printing layer 5, what added the pigment to binder resin can be used. The pigment used in the ink is not particularly limited and may be either an inorganic pigment or an organic pigment. Inorganic pigments include, for example, titanium oxide, zinc white, carbon black, black iron oxide, yellow iron oxide, yellow lead, molybdate orange, cadmium yellow, nickel titanium yellow, chrome titanium yellow, iron oxide (valve), and cadmium. Examples thereof include red, ultramarine blue, bitumen, cobalt blue, chromium oxide, cobalt green, aluminum powder, bronze powder, titanium mica, and zinc sulfide. Examples of organic pigments include aniline black, perylene black, azo (azo lake, insoluble azo, condensed azo), polycyclic (isoindolinone, isoindoline, quinophthalone, perinone, flavantron, anthrapyrimidine, anthraquinone, quinacridone, Perylene, diketopyrrolopyrrole, dibromoanthanthrone, dioxazine, thioindigo, phthalocyanine, indanthrone, halogenated phthalocyanine) and the like. These pigments may be used alone or in combination of two or more. The binder resin used in the ink is not particularly limited. For example, polyurethane resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl acetate-acrylic copolymer. Examples include resins, chlorinated polyethylene resins, chlorinated polypropylene resins, acrylic resins, polyester resins, polyamide resins, butyral resins, polystyrene resins, nitrocellulose resins, and cellulose acetate resins. These binder resins may be used individually by 1 type, and may be used in combination of 2 or more type.

  Although the thickness in particular of the printing layer 5 is not restrict | limited, For example, about 0.1-10 micrometers is mentioned.

[Backer layer 6]
The backer layer 6 is a resin layer provided as necessary on the back surface of the base sheet 1 (the surface opposite to the surface on which the aldehyde adsorption layer 2 is laminated). By providing such a backer layer 6, the effect of unevenness inevitably existing on the surface of the adherend is alleviated when the decorative sheet is attached to an adherend (especially woody plywood) to make a decorative plate. be able to. In particular, when used as a decorative sheet for floors, the backer layer also serves as a layer that imparts cushioning properties to the decorative sheet.

  The resin for forming the backer layer 6 is not particularly limited, but a thermoplastic resin is preferable. For example, polypropylene, ethylene-vinyl alcohol copolymer, polymethylene, polymethylpentene, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyarylate , Polyethylene naphthalate-isophthalate copolymer, polyimide, polystyrene, polyamide, ABS and the like.

  For the backer layer 6, for example, the resin component may be formed by a calendar method, an inflation method, a T-die extrusion method or the like, or a pre-molded resin film may be used.

  When the backer layer 6 is formed by extrusion molding of a molten resin, for example, extrusion molding using a T die can be suitably used. Further, when the backer layer is a multilayer, for example, a multi-manifold type or feed block type T-die may be used to perform multilayer simultaneous extrusion. When making the backer layer 6 into a multilayer, it is preferable that the layer nearest to the back surface of the base material sheet 1 is an easily adhesive resin layer, for example. Such an improvement can be achieved by, for example, blending a known thermoplastic elastomer into a layer that forms an easily adhesive resin layer. The type of the thermoplastic elastomer is not particularly limited, and can be widely selected from those that are highly compatible with the resin constituting the backer layer and can contribute to improvement in adhesion to the base sheet.

  In addition, when the backer layer 6 formed by extrusion molding is difficult to adhere to the back surface of the base material sheet by adhesion by thermal fusion, in order to enhance the adhesion between the backer layer 6 and the base material sheet 1 as necessary. An adhesive layer may be provided between them.

  Although there is no restriction | limiting in particular about the thickness of the backer layer 6, For example, 100 micrometers or more, Preferably it is about 150-600 micrometers, More preferably, about 250-400 micrometers is mentioned. The tensile modulus of elasticity of the backer layer 6 is not particularly limited, but is, for example, 1000 MPa or more, preferably 1500 to 2500 MPa or more.

[Separator]
In the decorative sheet of the present invention, a separator can be provided on the surface of the base sheet 1 (the surface when the backer layer 6 is provided) via an adhesive. By setting it as such a structure, the surface exposed by peeling a separator can be affixed on a to-be-adhered body.

[Embossed pattern]
The decorative sheet of the present invention can also be embossed by embossing on the surface of the anti-allergen functional layer 3 for the purpose of imparting design properties. The embossing method for forming the embossed pattern is not particularly limited, and examples thereof include a method of heating and pressurizing with an embossed plate from the anti-allergen functional layer surface. The shape of the embossed pattern is not particularly limited, and is set according to the characteristics of the building material to which the decorative sheet of the present invention is applied.

(3) Applications The adherend to which the decorative sheet of the present invention is applied is not particularly limited, and may be either an interior material or an exterior material. Preferred are interior materials such as floor materials and wall materials, and more preferred are interior floor materials. Further, the material of the adherend to which the decorative sheet of the present invention is applied is not particularly limited, and examples thereof include a wood substrate; a non-wood substrate such as a plastic plate and a plaster board, and preferably a wood substrate. It is done.

(4) Manufacturing method of decorative sheet The decorative sheet of the present invention is manufactured by laminating the aldehyde adsorbing layer 2 and the antiallergen functional layer 3 on the base sheet 1. For example, the decorative sheet of the present invention can be manufactured through the following first step and second step.
First step: A resin composition containing an aldehyde adsorbent and a curable resin is applied onto the substrate sheet 1 and cured.
Second step: A resin composition containing an anti-allergen agent and a curable resin is applied and cured.

  More specifically, the laminated sheet of the present invention is a layer (primer layer 4, printing layer 5 or the like) formed on the base sheet 1 between the base sheet 1 and the aldehyde adsorbing layer 2 as necessary. ), The aldehyde adsorption layer 2 is laminated, and if necessary, a layer formed between the aldehyde adsorption layer 2 and the anti-allergen functional layer 3 is laminated, and then the anti-allergen functional layer 4 is laminated. Is done. The method of forming and stacking each layer is as described above.

2. Decorative plate The decorative plate of the present invention is obtained by attaching the decorative sheet to an adherend.

  The upper adherend may be a wooden substrate or a non-wood substrate. Examples of wood substrates include veneer boards made of various materials such as cedar, firewood, firewood, pine, lawan, teak, and melapy, wood-based boards such as wood veneer, wood plywood, particle board, and medium density fiberboard (MDF). Is mentioned. Moreover, as a non-woody board | substrate, a plastic board, a gypsum board etc. are mentioned, for example. In the decorative board of the present invention, the substrate may be a single substrate or may be a laminate of two or more substrates.

  The adherend is preferably a wooden substrate, and more preferably a floor wooden substrate.

  In addition, as an adhesive used for attaching the decorative sheet and the adherend, it is possible to use urea, vinyl acetate resin, urea resin, melamine resin, phenol resin, isocyanate, or the like. It can be used alone or as a mixed adhesive mixed arbitrarily. For the adhesive, if necessary, inorganic powders such as talc, calcium carbonate, clay, titanium white, wheat flour, wood flour, plastic powder, coloring agents, insect repellents, fungicides and the like may be added and mixed. it can.

The adhesive can be applied using an application device such as a spray, a spreader, or a bar coater. In general, the adhesive is applied to the substrate surface with a solid content of 35 to 80% by mass and an application amount of 50 to 300 g / m ² .

  Adhesion of a decorative sheet to an adherend is usually performed by forming an adhesive layer on the back of the decorative sheet and adhering the adherend or applying an adhesive on the adherend. It is performed by a method such as sticking. A sticking device such as a cold press, a hot press, a roll press, a laminator, a wrapping, an edge sticking machine, or a vacuum press can be used for sticking the decorative sheet.

  The decorative board of the present invention thus obtained is arbitrarily cut and subjected to optional decoration such as grooving and chamfering on the surface and the mouth using a cutting machine such as a router or a cutter. Can do. The decorative board of the present invention is used for various applications such as flooring and wall material, preferably for flooring.

  Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the examples.

Example 1
On the base sheet, the primer forming resin composition was applied at 1.5 g / m ² to form a primer layer. As the base material sheet, a polyolefin resin sheet (formed by extruding colored polyethylene with a thickness of 80μ with respect to 60μ transparent polypropylene) was used. As a resin composition for forming a primer layer, a primer “manufactured by DIC Graphics Corporation” What added 5 mass parts of hexamethylene diisocyanate with respect to 100 mass parts of "EBR primer" was used.

On the primer layer formed above, the resin composition for forming an aldehyde adsorption layer containing 100 parts by mass of the bifunctional urethane oligomer and 10 parts by mass of an aldehyde adsorbent (Kesmon manufactured by Toagosei Co., Ltd.) is 15 g / m ^2. After coating, an electron beam having an acceleration voltage of 165 kV and an irradiation amount of 10 kGy (1 Mrad) was irradiated to semi-cure the resin to form an intermediate resin layer.

Next, on the intermediate resin layer, 100 parts by mass of a hexafunctional urethane oligomer, 10 parts by mass of an antiallergen agent (Allemov manufactured by Toagosei Co., Ltd.), and 16 parts by mass of a matting agent (amorphous silica having a particle size of 5 μm) are included. After coating the resin composition for forming an antiallergen functional layer at 15 g / m ² , an electron beam with an acceleration voltage of 165 kV and an irradiation amount of 50 kGy (5 Mrad) was applied to cure the resin to form a surface resin layer.

  Thus, a decorative sheet was manufactured in which a base sheet having a thickness of 140 μm, a primer layer having a thickness of 1.5 μm, an aldehyde adsorbing layer having a thickness of 15 μm, and an anti-allergen functional layer having a thickness of 15 μm were sequentially laminated.

Comparative Example 1
In the formation of the intermediate resin layer and in the formation of the surface resin layer, instead of the resin composition for forming the anti-allergen functional layer, 100 parts by mass of a hexafunctional urethane oligomer and a matting agent (amorphous silica having a particle size of 5 μ) 16 A substrate sheet having a thickness of 140 μm, a primer layer having a thickness of 1.5 μm, a surface resin layer having a thickness of 15 μm (containing no anti-allergen agent) under the same conditions as in Example 1 except that a resin composition containing parts by mass was used. ) Were laminated in order.

Comparative Example 2
Resin composition comprising the use of a bifunctional urethane oligomer in the formation of the intermediate resin layer, and 100 parts by mass of the hexafunctional urethane oligomer in the formation of the surface resin layer and 16 parts by mass of a matting agent (amorphous silica having a particle size of 5μ) Except for using the product, a base sheet having a thickness of 140 μm, a primer layer having a thickness of 1.5 μm, a resin layer having a thickness of 15 μm (containing no aldehyde adsorbent), and a surface resin having a thickness of 15 μm, under the same conditions as in Example 1. A decorative sheet in which layers (containing no antiallergen) were sequentially laminated was produced.

Comparative Example 3
In the formation of the intermediate resin layer and in the formation of the surface resin layer, 100 parts by mass of a hexafunctional urethane oligomer, 10 parts by mass of an aldehyde adsorbent (Kesmon manufactured by Toagosei Co., Ltd.), and an anti-allergen agent (Alleimove manufactured by Toagosei) A base material sheet having a thickness of 140 μm and a thickness of 1 μm under the same conditions as in Example 1 except that a resin composition containing 16 parts by mass of a mass part and a matting agent (amorphous silica having a particle size of 5 μm) was used. A decorative sheet was produced in which a 5 μm primer layer and a 15 μm thick surface resin layer (containing an aldehyde adsorbent and an antiallergen agent) were sequentially laminated.

Test example 1
In order to evaluate the performance of the decorative sheet of Example 1 and Comparative Example 1-3, antiallergen performance, formaldehyde adsorption performance, and stain resistance were evaluated.

(1) Antiallergen performance About the decorative sheet of each Example and a comparative example, the aqueous solution (The initial concentration of mite allergen: Mite antigen Derf1, refinement | purification (brand name), Wako Pure Chemical Industries Ltd. make): 100 ng / ml) is dropped onto a decorative sheet, covered with a glass plate, and allowed to stand for 24 hours. The mite allergen on the decorative sheet is collected, and the inactivation rate of the mite allergen is measured using an ELISA method. Anti-allergen performance was evaluated according to the following criteria.
<Criteria for anti-allergen performance>
A: The inactivation rate from the initial concentration of mite allergen is 90% or more B: The inactivation rate from the initial concentration of mite allergen is 70% or more and less than 90% C: From the initial concentration of mite allergen Inactivation rate from 50% to less than 70% D: Deactivation rate from initial concentration of mite allergen is from 30% to less than 50% E: Inactivation rate from initial concentration of mite allergen is 10 %: Less than 30% F: Inactivation rate from initial concentration of mite allergen is less than 10%

(2) Formaldehyde adsorption performance About the decorative sheet of each Example and a comparative example, the test piece cut | disconnected to 10 square cm is inserted in the Tedlar back | bag of internal volume 5L, 28 mass% formaldehyde aqueous solution and synthetic air [(nitrogen: (Oxygen) volume ratio 4: 1, relative humidity 50%], and 1 liter of gas adjusted to a formaldehyde concentration of 40 ppm was fed into the Tedlar bag. Then, the time-dependent change of the formaldehyde concentration in the air in the Tedlar bag was measured by gas chromatography, the formaldehyde removal rate after 6 hours was calculated by the following formula, and the formaldehyde adsorption performance was evaluated according to the following criteria.

<Criteria for formaldehyde adsorption performance>
A: Formaldehyde removal rate of 90% or more B: Formaldehyde removal rate of 50% or more and less than 90% C: Formaldehyde removal rate of 30% or more and less than 50% D: Formaldehyde removal rate of 10% or more and 30% Less than E: Formaldehyde removal rate is less than 10%

(3) Contamination resistance According to JIS-K-6902, after dripping office ink and blue black on the decorative sheet surface of each example and comparative example, surface changes when wiped with water 24 hours later are as follows. Evaluation based on the criteria.
<Criteria for contamination resistance>
A: The surface does not change B: The surface is slightly contaminated, but does not impair the appearance C: The surface is slightly contaminated, the appearance is slightly impaired D: The surface is significantly contaminated What

(4) Results Table 1 shows the results obtained. As is clear from Table 1, the decorative sheet (Comparative Examples 1 and 2) containing no anti-allergen agent in the surface resin layer and no aldehyde adsorbent in the intermediate resin layer did not exhibit anti-allergen performance and formaldehyde adsorption performance. . Further, the decorative sheet (Comparative Example 3) containing both the anti-allergen agent and the aldehyde adsorbent in the surface resin layer showed only low anti-allergen performance. In contrast, the decorative sheet (Example 1) in which an aldehyde adsorbent is blended in the intermediate resin layer and an anti-allergen agent is blended in the surface resin layer has been able to exhibit very excellent anti-allergen performance and formaldehyde adsorption performance. It was.

Example 2
In the resin composition for forming an aldehyde adsorption layer, a decorative sheet was produced under the same conditions as in Example 1 except that the ratio of the aldehyde adsorbent to 100 parts by mass of the bifunctional urethane oligomer was changed to 5 parts by mass.

Example 3
In the resin composition for forming an anti-allergen functional layer, a decorative sheet was produced under the same conditions as in Example 1 except that the ratio of the anti-allergen agent to 100 parts by mass of the hexafunctional urethane oligomer was changed to 5 parts by mass.

Example 4
In the resin composition for forming an aldehyde adsorption layer, the ratio of the aldehyde adsorbent to 100 parts by mass of the bifunctional urethane oligomer was changed to 15 parts by mass, and in the resin composition for forming the anti-allergen functional layer, 100 parts by mass of the hexafunctional urethane oligomer. A decorative sheet was produced under the same conditions as in Example 1 except that the ratio of the anti-allergen agent to 5 parts by mass was changed to 5 parts by mass.

Example 5
In the resin composition for forming an aldehyde adsorption layer, the ratio of the aldehyde adsorbent to 100 parts by mass of the bifunctional urethane oligomer was changed to 5 parts by mass, and in the resin composition for forming the anti-allergen functional layer, 100 parts by mass of the hexafunctional urethane oligomer. A decorative sheet was produced under the same conditions as in Example 1 except that the ratio of the anti-allergen agent to 15 parts was changed to 15 parts by mass.

Example 6
The intermediate resin layer is formed using a resin composition for forming an aldehyde adsorption layer containing 50 parts by mass of a bifunctional urethane oligomer, 50 parts by mass of a hexafunctional urethane oligomer, and 10 parts by mass of an aldehyde adsorbent (Kesmon manufactured by Toagosei Co., Ltd.). A decorative sheet was produced under the same conditions as in Example 1 except that this was done.

Test example 2
In order to evaluate the performance of the decorative sheet of Example 2-6, anti-allergen performance, formaldehyde adsorption performance, and stain resistance were evaluated in the same manner as in Test Example 1 above.

  The obtained results are shown in Table 2. Also from this result, the decorative sheet (Example 2-6) in which an aldehyde adsorbent is blended in the intermediate resin layer and an anti-allergen agent is blended in the surface resin layer has both functions of anti-allergen performance and formaldehyde adsorption performance. It was able to demonstrate effectively.

DESCRIPTION OF SYMBOLS 1 Base sheet 11a, 11b Resin sheet 12 Adhesive layer 2 Aldehyde adsorption layer 3 Antiallergen functional layer 4 Primer layer 5 Print layer

Claims (8)

  On the base sheet, an aldehyde adsorption layer formed of a resin composition containing an aldehyde adsorbent and a curable resin, and an anti-allergen functional layer formed of a resin composition containing an anti-allergen agent and a curable resin, in this order, A decorative sheet characterized by being laminated.   The decorative sheet according to claim 1, wherein the curable resin used for forming the aldehyde adsorbing layer and the anti-allergen functional layer is an electron beam curable resin.   In the resin composition used for the formation of the aldehyde adsorption layer, 2 to 4 functional urethane (meth) acrylate oligomer is 50 parts by mass or more with respect to 100 parts by mass of the total amount of the curable resin contained in the resin composition. The decorative sheet according to claim 1 or 2, which is contained in a proportion.   The decorative sheet according to any one of claims 1 to 3, wherein the anti-allergen agent is a compound having a phenolic hydroxyl group.   The decorative sheet according to any one of claims 1 to 4, wherein the anti-allergen agent is a compound in which a compound having a phenolic hydroxyl group is supported on an inorganic solid acid.   The decorative sheet according to any one of claims 1 to 5, wherein the aldehyde adsorbent is an aldehyde adsorbent capable of adsorbing aldehyde by chemical adsorption.   A decorative board obtained by attaching the decorative sheet according to claim 1 to an adherend. The manufacturing method of a decorative sheet including the following first step and second step:
On the base sheet 1, a resin composition containing an aldehyde adsorbent and a curable resin is applied and cured, and a resin composition containing an antiallergen agent and a curable resin is applied, Second step for curing.