Decorative sheet, decorative material and manufacturing method thereof

Abstract

To provide a decorative sheet that is excellent in blocking resistance, adhesion to a coating layer, ease of scraping off, and suitability for mirror finish.SOLUTION: A decorative sheet has a transparent resin layer and a primer layer disposed in order on a substrate sheet at least comprising a polyolefin resin. The surface of the decorative sheet is subjected to a measurement by a measuring method in accordance with JIS B0601: 2013, so that the ratio between an average length RSm of rough curve elements and a maximum height Rz (RSm / Rz) is 40-100.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a decorative sheet, a decorative material, and a method for producing the same. [Background technology]

[0002] Conventionally, decorative materials having a decorative sheet on an adherend such as a wood substrate have been used as flooring materials for buildings such as detached houses, condominiums, apartments, etc. When such decorative materials are actually used, a cured coating film such as urethane or acrylic may be formed on the surface of the decorative sheet to impart durability, scratch resistance, etc. to the surface of the decorative sheet.

[0003] A decorative sheet before the formation of a coating film has been proposed for forming the above-mentioned decorative material (see Patent Document 1). This decorative sheet has a primer layer for forming a coating film, which is formed from a specific blend of acrylic-urethane copolymer resin and isocyanate, and aims to improve the adhesion of the coating film.

[0004] Although the decorative sheet before the coating film described above is an excellent decorative sheet, there is room for improvement in terms of the ability to scrape off excess paint. In the process of manufacturing decorative materials, there are cases where a decorative sheet before the coating film is formed is manufactured, temporarily wound up, and transported to another line or shipped. Such decorative sheets are required to have blocking resistance and excellent coating film adhesion (recoatability) before the coating film is formed.

[0005] Furthermore, in order to improve the design of the decorative sheet described above, grooved portions, chamfered portions, etc. may be formed on the surface and a paint may be applied before a coating film is formed. Next, excess paint adhering to areas other than the grooved portions, chamfered portions, etc. is scraped off, and a coating film is then formed on the surface of the decorative sheet. With such decorative sheets, it is necessary that excess paint on the surface be easy to scrape off before a coating film is formed, and scraping ability is required.

[0006] Furthermore, in some cases, the decorative sheet described above is required to have a mirror-like surface in order to improve its design after a coating film is formed in a later process. Such decorative sheets are required to have properties that make them easy to mirror-finish, i.e., mirror-finish suitability, before the coating film is formed.

[0007] Therefore, there is a need for the development of a decorative sheet that is excellent in blocking resistance, paint film adhesion, scraping properties, and mirror finish suitability. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 5499429 Summary of the Invention [Problem to be solved by the invention]

[0009] An object of the present invention is to provide a decorative sheet that is excellent in blocking resistance, paint adhesion, scraping ability, and mirror finish suitability. Another object of the present invention is to provide a decorative material that is excellent in paint adhesion, scraping ability, and mirror finish suitability. A further object of the present invention is to provide a production method that can easily produce a decorative material that is excellent in paint adhesion, scraping ability, and mirror finish suitability while suppressing blocking. [Means for solving the problem]

[0010] As a result of extensive research, the present inventors have discovered that the above-mentioned object can be achieved by a decorative sheet having a transparent resin layer and a primer layer, in that order, on a substrate sheet made of at least a polyolefin resin, and the surface shape of the decorative sheet exhibits specific characteristics, and have thus completed the present invention.

[0011] That is, the present invention relates to the following decorative sheet, decorative material, and method for producing the same. 1. A decorative sheet having a transparent resin layer and a primer layer in this order on a substrate sheet made of at least a polyolefin resin, The surface of the decorative sheet has a ratio (RSm / Rz) of the average length RSm of the roughness curve element to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of 40 to 100. A decorative sheet characterized by: 2. The decorative sheet according to item 1, wherein the primer layer contains an inorganic filler. 3. The decorative sheet according to item 2, wherein the content of the inorganic filler is 10 to 30 parts by mass per 100 parts by mass of the cured resin component that forms the primer layer. 4. The decorative sheet according to any one of items 1 to 3, having an uneven pattern on the surface. 5. A decorative material having an adherend on the surface of the decorative sheet according to any one of items 1 to 4 opposite to the primer layer. 6. The decorative material according to item 5, having grooved portions and / or chamfered portions on the decorative sheet side. 7. The decorative material according to item 6, wherein the grooved portion and / or the chamfered portion are coated with paint. 8. The decorative material according to any one of items 5 to 7, having a coating film on the primer layer. 9. The decorative material according to item 8, wherein the coating film is made of an ionizing radiation curable resin. Item 10. The decorative material according to Item 9, wherein the ionizing radiation curable resin is an ultraviolet curable resin. 11. (1) A method for manufacturing a decorative material by adhering a decorative sheet to an adherend, The decorative sheet has a substrate sheet made of at least a polyolefin resin, a transparent resin layer, and a primer layer in this order, The surface of the decorative sheet has a ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of 40 to 100. A method for producing a cosmetic material, comprising: 12. After step 1, further: (2) Step 2: forming grooved portions and / or chamfered portions on the decorative sheet side of the decorative material; (3) applying paint to the grooved portion and / or the chamfered portion; and (4) Step 4: scraping off paint from areas other than the grooved portion and / or the chamfered portion having Item 11. The manufacturing method according to item 11. 13. The manufacturing method according to item 11 or 12, further comprising a coating film forming step of forming a coating film on the decorative sheet side of the decorative material. [Effects of the Invention]

[0012] The decorative sheet of the present invention is excellent in blocking resistance, paint adhesion, scraping ability, and mirror finish suitability. Furthermore, the decorative material of the present invention is configured to have an adherend on the side of the decorative sheet opposite the primer layer, and therefore is excellent in paint adhesion, scraping ability, and mirror finish suitability. Furthermore, the method for producing a decorative material of the present invention produces a decorative material using the decorative sheet of the present invention, which is excellent in blocking resistance, paint adhesion, scraping ability, and mirror finish suitability, and therefore blocking of the decorative sheet is suppressed, and a decorative material with excellent paint adhesion, scraping ability, and mirror finish suitability can be easily produced. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic diagram (cross-sectional view) of a decorative sheet of the present invention. [Figure 2] 1 is a schematic diagram (cross-sectional view) of a decorative material of the present invention. [Figure 3] 1 is a schematic diagram (cross-sectional view) of a decorative material of the present invention. [Figure 4] 1 is a schematic diagram (cross-sectional view) of a decorative material of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] 1. Decorative sheet The decorative sheet of the present invention is a decorative sheet having, in this order, a transparent resin layer and a primer layer on a substrate sheet made of at least a polyolefin resin, and is characterized in that the surface of the decorative sheet has a ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of 40 to 100. The decorative sheet of the present invention having the above characteristics has a ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of the surface within a specific range, and therefore has excellent coating adhesion, blocking resistance, scraping ability, and suitability for mirror finish.

[0015] Fig. 1 is a cross-sectional view showing an example of a decorative sheet of the present invention. The decorative sheet 1 of the present invention shown in Fig. 1 has, in this order, a transparent resin layer 15 and a primer layer 16 on a substrate sheet 12 made of at least a polyolefin resin.

[0016] The decorative sheet of the present invention will be described in detail below. In the decorative sheet of the present invention, the surface is the so-called "front side," which is the side opposite to the side that comes into contact with the adherend when the decorative sheet of the present invention is laminated onto an adherend or the like, and is the side that is visible after lamination. In addition, in this specification, the direction of the surface of the decorative sheet of the present invention will sometimes be referred to as the "front" or "top," and the opposite side will sometimes be referred to as the "back" or "bottom."

[0017] The surface of the decorative sheet of the present invention has a ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of 40 to 100. If RSm / Rz is less than 40, scraping properties and mirror finish suitability decrease. If RSm / Rz exceeds 100, blocking resistance decreases. RSm / Rz is preferably 40 to 100, more preferably 50 to 80, and even more preferably 60 to 70. Since the primer layer is usually the outermost layer of the decorative sheet of the present invention, RSm and Rz of the surface of the decorative sheet may be measured on the surface of the primer layer.

[0018] The RSm and Rz mentioned above are the average length RSm and maximum height Rz of the roughness profile elements, respectively, measured under measurement conditions conforming to JIS B0633:2001 by a measurement method conforming to JIS B0601:2013.

[0019] The RSm is preferably 100 to 600 μm, more preferably 150 to 450 μm, and even more preferably 200 to 300 μm. When the lower limit of RSm is within the above range, the coating adhesion, scraping ability, and mirror finish suitability of the decorative sheet of the present invention are further improved. When the upper limit of RSm is within the above range, the blocking resistance of the decorative sheet of the present invention is further improved.

[0020] The above Rz is preferably 2 to 15 μm, more preferably 3 to 10 μm, and even more preferably 4 to 6 μm. When the lower limit of Rz is within the above range, the blocking resistance of the decorative sheet of the present invention is further improved. When the upper limit of Rz is within the above range, the coating adhesion, scraping ability, and mirror finish suitability of the decorative sheet of the present invention are further improved.

[0021] In this specification, the above RSm, Rz, and RSm / Rz are values ​​measured by the following measurement method.

[0022] An area of ​​5 cm length and 5 cm width is arbitrarily selected on the surface of the decorative sheet. Five points are arbitrarily selected within this area, and the average length RSm and maximum height Rz of the roughness curve elements are measured in the width direction (TD) of the decorative sheet under measurement conditions (evaluation length 40 mm) conforming to JIS B0633:2001 using a measurement method conforming to JIS B0601:2013, and the average values ​​of the five points are taken as the measured values ​​of RSm and Rz. Next, RSm / Rz is calculated from the measured values ​​of RSm and Rz.

[0023] Methods for adjusting RSm, Rz, and RSm / Rz on the surface of a decorative sheet within the above ranges include, for example, (1) a method of adjusting by embossing from the primer layer side of the decorative sheet of the present invention, (2) a method of adjusting by embossing from the transparent resin layer side before forming the primer layer during the manufacturing process of the decorative sheet of the present invention, (3) a method of adjusting by blending fine particles such as silica into the primer layer and changing the content and average particle diameter of the fine particles, and (4) a method of adjusting by combining the above methods (1) to (3).

[0024] In the above method (1) or (2), the specific method of embossing is not particularly limited, and examples thereof include a method of pressing an embossing plate against the surface to be embossed, a method of embossing using an embossing roll, and a chill roll embossing method of embossing using a chill roll whose surface temperature is controlled at a low temperature.

[0025] The surface temperature of the chill roll in the chill roll embossing method is not particularly limited, but is preferably 20 to 60°C, more preferably 30 to 50°C.

[0026] The decorative sheet of the present invention has a transparent resin layer and a primer layer, in this order, on a substrate sheet made of at least a polyolefin resin, and the specific layer configuration is not limited as long as the RSm / Rz of the surface of the decorative sheet is 40 to 100. For example, as shown in Figure 1, a decorative sheet having, from bottom to top, a back primer layer 11, a substrate sheet 12, a picture pattern layer 13, a transparent adhesive layer 14, a transparent resin layer 15, and a primer layer 16 is exemplified. Each layer will be specifically described below using a decorative sheet with such a layer configuration as a representative example.

[0027] Base sheet The substrate sheet is made of a polyolefin resin, and usually a film made of a polyolefin resin is used.

[0028] The polyolefin resin is not particularly limited, and those commonly used in the field of decorative sheets can be used. Examples include polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin thermoplastic elastomer, etc. Among these, polypropylene, polyolefin thermoplastic elastomer, etc. are particularly preferred.

[0029] Homopolypropylene or copolymers containing polypropylene as the main component are also preferred, and examples thereof include homopolypropylene resin, random polypropylene resin, and block polypropylene resin.

[0030] Additionally, propylene-α-olefin copolymers containing 15 mol % or more of a comonomer selected from ethylene, butene-1, 4-methylpentene-1, hexene-1, and octene-1 are also preferred.

[0031] The polyolefin-based thermoplastic elastomer is a block polymer that uses isotactic polypropylene for the hard segment and atactic polypropylene for the soft segment. In particular, a mixture of hard segments made of isotactic polypropylene and soft segments made of atactic polypropylene in a weight ratio of 80:20 is preferred.

[0032] The polyolefin resin may be formed into a film by, for example, a calendar method, an inflation method, a T-die extrusion method, or the like.

[0033] The thickness of the substrate sheet is not particularly limited and can be set depending on the product characteristics, but is usually about 40 to 150 μm, and preferably about 50 to 100 μm.

[0034] The base sheet may contain additives as needed. Examples of additives include fillers such as calcium carbonate and clay, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, and colorants (see below). The amount of additives added can be determined appropriately depending on the product characteristics.

[0035] The colorant is not particularly limited, and known colorants such as pigments and dyes can be used. Examples include inorganic pigments such as titanium white, zinc oxide, red iron oxide, vermilion, ultramarine, cobalt blue, titanium yellow, yellow lead, and carbon black; organic pigments (including dyes) such as isoindolinone, Hansa Yellow A, quinacridone, permanent red 4R, phthalocyanine blue, indanthrene blue RS, and aniline black; metal pigments such as aluminum and brass; and pearlescent pigments made of foil powder such as titanium dioxide-coated mica and basic lead carbonate. The coloring of the substrate sheet can be either transparent or opaque (hiding), and these can be selected as desired. For example, opaque coloring can be selected to conceal the background color of the adherend (the substrate to which the decorative sheet is adhered). On the other hand, transparent coloring can be selected to allow the background pattern of the adherend to be visible.

[0036] One or both sides of the substrate sheet may be subjected to a surface treatment such as corona discharge treatment, ozone treatment, plasma treatment, ionizing radiation treatment, dichromate treatment, etc., as needed. For example, when corona discharge treatment is performed, the surface tension of the substrate sheet surface is 3×10 -4 N or more, preferably 4 × 10 -4 The surface treatment may be carried out in accordance with the usual method for each treatment.

[0037] A back primer layer may be provided on the back surface of the base sheet (the surface to which the adherend is attached) to facilitate adhesion of the adherend, and a printing primer layer may be provided on the top surface of the base sheet (the surface opposite to the surface to which the adherend is attached) to facilitate formation of a picture pattern layer.

[0038] The back primer layer and the printing primer layer can be formed by applying a known primer agent to one or both sides of the substrate sheet. The primer agent can be a resin component dispersed in a solvent. Examples of the resin component include acrylic-urethane resins and urethane-cellulose resins (e.g., resins obtained by adding hexamethylene diisocyanate to a mixture of urethane and soluble nitrocellulose).

[0039] The amount of primer applied is not particularly limited, but is usually 0.1 to 100 g / m 2 , preferably 0.1 to 50 g / m 2 That's about it.

[0040] There are no particular limitations on the thickness of the back primer layer and the printing primer layer after drying, but each is usually about 0.01 to 10 μm, and preferably about 0.1 to 1 μm.

[0041] Pattern layer A picture pattern layer may be formed on the substrate sheet.

[0042] The picture pattern layer imparts a design to the decorative sheet in the form of a desired pattern, and the type of pattern is not particularly limited, and examples thereof include wood grain patterns, stone grain patterns, sand grain patterns, tile patterns, brickwork patterns, fabric patterns, leather-grained patterns, geometric figures, letters, symbols, and abstract patterns.

[0043] The method for forming the picture pattern layer is not particularly limited, and it may be formed, for example, by a printing method using a colored ink, coating agent, or the like obtained by dissolving (or dispersing) a known colorant (dye or pigment) together with a binder resin in a solvent (or dispersion medium).

[0044] Examples of colorants include inorganic pigments such as carbon black, titanium white, zinc white, red iron oxide, iron blue, and cadmium red; organic pigments such as azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, and dioxazine pigments; metal powder pigments such as aluminum powder and bronze powder; pearlescent pigments such as titanium oxide-coated mica and bismuth oxide chloride; fluorescent pigments; and luminous pigments. These colorants can be used alone or in combination. These colorants may further contain fillers such as silica, extender pigments such as organic beads, neutralizers, surfactants, and the like.

[0045] Examples of binder resins include acrylic resins, styrene resins, polyester resins, urethane resins, acrylic-urethane resins, chlorinated polyolefin resins, vinyl chloride-vinyl acetate copolymer resins, polyvinyl butyral resins, alkyd resins, petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine-containing resins, silicone resins, cellulose derivatives, rubber resins, etc. These resins can be used alone or in combination of two or more.

[0046] Examples of solvents (or dispersion media) include petroleum-based organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, and methylcyclohexane; ester-based organic solvents such as ethyl acetate, butyl acetate, 2-methoxyethyl acetate, and 2-ethoxyethyl acetate; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, and propylene glycol; ketone-based organic solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; ether-based organic solvents such as diethyl ether, dioxane, and tetrahydrofuran; chlorine-based organic solvents such as dichloromethane, carbon tetrachloride, trichloroethylene, and tetrachloroethylene; and inorganic solvents such as water. These solvents (or dispersion media) can be used alone or in combination of two or more.

[0047] Examples of printing methods used to form the picture pattern layer include gravure printing, offset printing, screen printing, flexographic printing, electrostatic printing, and inkjet printing. When forming a solid picture pattern layer over the entire surface, examples of coating methods include roll coating, knife coating, air knife coating, die coating, lip coating, comma coating, kiss coating, flow coating, and dip coating. Other methods that may be used include hand-drawing, ink-flowing, photography, transfer printing, laser beam writing, electron beam writing, partial vapor deposition of metals or the like, and etching, or may be used in combination with other forming methods.

[0048] The thickness of the picture pattern layer is not particularly limited and can be set appropriately depending on the product characteristics, but the layer thickness at the time of coating is about 1 to 15 μm, and the layer thickness after drying is about 0.1 to 10 μm.

[0049] Colored hiding layer If necessary, a colored concealing layer may be further formed between the base sheet and the picture / pattern layer. The colored concealing layer is provided when it is desired to conceal the ground color of the adherend from the front surface of the decorative sheet. The colored concealing layer may be formed to stabilize the concealing properties not only when the base sheet is transparent, but also when the base sheet is colored for concealment.

[0050] As the ink for forming the colored concealing layer, an ink for forming a picture pattern layer and capable of concealing coloring can be used.

[0051] The colored concealing layer is preferably formed by a method that can coat the entire substrate sheet (to form a solid layer on the entire surface), such as the above-mentioned roll coating, knife coating, air knife coating, die coating, lip coating, comma coating, kiss coating, flow coating, and dip coating.

[0052] The thickness of the colored concealing layer is not particularly limited and can be set appropriately depending on the product characteristics, but the layer thickness at the time of coating is about 0.2 to 10 μm, and the layer thickness after drying is about 0.1 to 5 μm.

[0053] transparent adhesive layer A transparent adhesive layer may be formed on the picture pattern layer. The transparent adhesive layer is not particularly limited as long as it is transparent, and may be colorless and transparent, colored and transparent, translucent, etc. This adhesive layer is formed to bond the picture pattern layer and the transparent polypropylene-based resin layer.

[0054] The adhesive is not particularly limited, and any adhesive known in the field of decorative sheets can be used.

[0055] Examples of adhesives known in the field of decorative sheets include thermoplastic resins such as polyamide resins, acrylic resins, and vinyl acetate resins, and curable resins such as thermosetting urethane resins. Two-component curing polyurethane resins or polyester resins using isocyanate as a curing agent may also be used.

[0056] The adhesive layer can be formed, for example, by applying an adhesive onto the design layer and then drying and curing it. Conditions such as drying temperature and drying time are not particularly limited and may be set appropriately depending on the type of adhesive. The adhesive application method is not particularly limited, and methods that can be used include roll coating, curtain flow coating, wire bar coating, reverse coating, gravure coating, gravure reverse coating, air knife coating, kiss coating, blade coating, smooth coating, and comma coating.

[0057] The thickness of the adhesive layer is not particularly limited, but the thickness after drying is 0.1 to 30 μm, preferably about 1 to 20 μm.

[0058] transparent resin layer A transparent resin layer is formed on the transparent adhesive layer. The transparent resin layer may be colorless and transparent, colored and transparent, translucent, or the like, as long as it is transparent.

[0059] The resin component contained in the transparent resin layer is not limited, but is preferably a thermoplastic resin, particularly preferably polypropylene, and more preferably homopolypropylene. The transparent resin layer is preferably substantially formed of the above polypropylene-based resin.

[0060] Additives such as fillers, flame retardants, lubricants, antioxidants, light stabilizers (ultraviolet absorbers, radical scavengers, etc.) can be added to the transparent resin layer as needed. In particular, the addition of a light stabilizer is preferred to improve weather resistance.

[0061] Examples of the ultraviolet absorber include organic ultraviolet absorbers such as triazines, benzotriazoles, benzophenones, salicylic acid esters, etc. Inorganic ultraviolet absorbers such as zinc oxide, cerium oxide, and titanium oxide in the form of fine particles having a particle size of 0.2 μm or less can also be used.

[0062] Examples of the radical scavenger include hindered amine radical scavengers such as bis-(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, and piperidine radical scavengers. The transparent resin layer is formed by, for example, calendering, inflation, or T-die extrusion of a resin. Alternatively, a pre-existing film may be used.

[0063] The thickness of the transparent resin layer is usually about 20 to 300 μm.

[0064] If necessary, a textured pattern may be formed on the transparent resin layer by embossing, and a primer layer, as described below, may be formed on the transparent resin layer. By forming a textured pattern on the transparent resin layer, it becomes easier to adjust RSm, Rz, and RSm / Rz on the surface of the decorative sheet of the present invention to fall within the above-mentioned ranges, further improving the coating adhesion, blocking resistance, and scraping properties of the decorative sheet of the present invention.

[0065] Primer layer A primer layer (a primer layer for forming a coating film) is formed on the transparent resin layer.

[0066] The primer layer can be formed by applying a primer layer-forming resin composition containing a known resin component used in primer layers to the surface of the transparent resin layer. Examples of the resin component include a urethane resin primer agent made of an acrylic-urethane copolymer resin, an acrylic-modified urethane resin (acrylic urethane resin), etc., a primer agent made of a urethane-cellulose resin (e.g., a resin obtained by adding hexamethylene diisocyanate to a mixture of urethane and soluble cellulose), and a resin primer agent made of an acrylic-urethane block copolymer.

[0067] The copolymerization ratio of the acrylic component in the above acrylic-urethane copolymer resin is preferably 65% ​​or less, more preferably 20 to 65%, and even more preferably 20 to 40%. By setting the upper limit of the copolymerization ratio of the acrylic component within the above range, the coating film adhesion of the decorative sheet is further improved. By setting the lower limit of the copolymerization ratio of the acrylic component within the above range, even better weather resistance can be imparted to the decorative material.

[0068] The primer layer may contain additives as needed. Examples of additives include inorganic fillers such as silica, calcium carbonate, clay, and the like, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, ultraviolet absorbers, and light stabilizers. The amount of additives added can be appropriately determined depending on the product characteristics.

[0069] Silica is preferred as the inorganic filler. By including silica in the primer layer, it becomes easier to adjust the RSm, Rz, and RSm / Rz of the surface of the decorative sheet of the present invention to within the above-mentioned ranges, and the coating adhesion, blocking resistance, and scraping properties of the decorative sheet of the present invention are further improved.

[0070] The inorganic filler is generally in powder form. In this case, the average particle size of the inorganic filler is not particularly limited, but is preferably 1 to 5 μm, and more preferably 1 to 3 μm.

[0071] The content of the inorganic filler is preferably 5 to 35 parts by mass, more preferably 10 to 30 parts by mass, and more preferably 15 to 25 parts by mass, per 100 parts by mass of the cured resin component that forms the primer layer. The primer layer has high coating adhesion. Because the decorative sheet of the present invention has such a primer layer on the outermost surface, blocking tends to occur when the sheet is wound into a roll. In the decorative sheet of the present invention, blocking can be more effectively suppressed by setting the lower limit of the inorganic filler content within the above range.

[0072] Furthermore, when an inorganic filler is contained, if the content is too high, there is a risk of causing a decrease in adhesion between the primer layer and the coating film over time. In particular, the adhesion of the coating film is likely to decrease under high-temperature, high-humidity atmospheres. In the decorative sheet of the present invention, by setting the upper limit of the inorganic filler content within the above range, the decrease in adhesion of the coating film under high-temperature, high-humidity atmospheres can be more effectively suppressed.

[0073] The primer layer may be formed by a known coating method such as roll coating. Prior to forming the primer layer, the surface on which the primer layer is to be formed, i.e., the surface of the transparent resin layer, may be subjected to a surface treatment for improving adhesion, such as a corona discharge treatment, a plasma treatment, or an ozone treatment, as necessary.

[0074] If necessary, a textured pattern may be formed on the primer layer by embossing. By forming a textured pattern on the primer layer, it becomes easier to adjust RSm, Rz, and RSm / Rz on the surface of the decorative sheet of the present invention to fall within the above-mentioned ranges, further improving the coating adhesion, blocking resistance, and scraping properties of the decorative sheet of the present invention.

[0075] 2. Cosmetic materials The decorative material of the present invention is a decorative material having an adherend on the side of the decorative sheet opposite the primer layer. The decorative sheet of the present invention described above can be bonded to various adherends to form a decorative material.

[0076] Fig. 2 is a schematic diagram showing an example of the decorative material of the present invention. In Fig. 2, the decorative material 2 of the present invention has the decorative sheet 1 laminated on the adherend 21 via the adhesive layer 22.

[0077] The material of the adherend is not particularly limited, and examples thereof include inorganic non-metallic, metallic, wooden, and plastic materials.

[0078] Specific examples of inorganic non-metallic materials include non-ceramic ceramic materials such as paper cement, extruded cement, slag cement, ALC (aerated lightweight concrete), GRC (glass fiber reinforced concrete), pulp cement, wood chip cement, asbestos cement, calcium silicate, gypsum, and gypsum slag, as well as ceramic materials such as earthenware, pottery, porcelain, stoneware, glass, and enamel.

[0079] Examples of metal materials include metal materials (metal steel sheets) such as iron, aluminum, and copper.

[0080] Examples of wood-based materials include veneers, plywood, particle board, fiberboard, and laminated lumber made of cedar, cypress, oak, lauan, teak, and the like.

[0081] Examples of plastic materials include polypropylene, ABS resin, and phenol resin.

[0082] The shape of such an adherend is not particularly limited, and it is usually a flat plate in consideration of installation on flooring or the like.

[0083] After joining to the adherend, tongue processing may be performed using a cutter, router, tenoner, or the like, depending on the characteristics of the final product. Furthermore, as shown in Figure 3, the decorative material of the present invention may have grooved portions 23, such as V-shaped grooves, on the decorative sheet side, or may have chamfered portions 24 on the edge on the decorative sheet side by chamfering the four sides of the decorative sheet side. Furthermore, the decorative material of the present invention may be coated with paint to impart design features to the above-mentioned grooved portions and chamfered portions.

[0084] coating The decorative material of the present invention may have a coating film on the primer layer of the decorative sheet.

[0085] An example of a decorative material of the present invention on which a coating film has been formed is shown in Figure 4. In Figure 4, decorative material 2 of the present invention has a grooved portion 23, which is a V-shaped or other linear groove, on the decorative sheet 1 side, and grooved portion 23 is coated with paint 25. It also has a chamfered portion 24 at the end on the decorative sheet 1 side, and paint 26 is coated on chamfered portion 24. In Figure 4, the decorative material of the present invention has a coating film 27 formed on the primer layer of decorative sheet 1, and the surface of the decorative material is covered with coating film 27.

[0086] Various coating films can be formed on the primer layer of the decorative sheet that constitutes the decorative material. Examples of resin components that constitute the coating film include curable resins such as epoxy resins, urethane resins, acrylic resins, ester resins, and unsaturated polyester resins, as well as mixed resins consisting of one or more of these.

[0087] The coating film can be formed of one layer or two or more layers.

[0088] As the coating film, a transparent surface protective layer formed by using an ionizing radiation curable resin is particularly preferred. By forming a transparent surface protective layer using an ionizing radiation curable resin, a decorative material with better scratch resistance, weather resistance, etc. can be obtained. In particular, the decorative sheet and decorative material of the present invention are excellent in that they can ensure high adhesion even when using an ionizing radiation curable resin, which is difficult to ensure as a coating film.

[0089] A transparent surface protective layer will now be specifically described as a representative example of a coating film that can be formed on the primer layer of the decorative sheet and decorative material of the present invention.

[0090] The ionizing radiation curable resin is not limited as long as it undergoes a crosslinking polymerization reaction upon irradiation with ionizing radiation and changes into a three-dimensional polymer structure. Preferred ionizing radiation curable resins are electron beam curable resins and ultraviolet curable resins.

[0091] Ionizing radiation includes visible light, ultraviolet light (near ultraviolet light, vacuum ultraviolet light, etc.), X-rays, electron beams, ion beams, etc., and among these, ultraviolet light and electron beams are preferred.

[0092] Ultraviolet light sources that can be used include ultra-high pressure mercury lamps, high pressure mercury lamps, low pressure mercury lamps, carbon arc lamps, black light fluorescent lamps, and metal halide lamps. The wavelength of the ultraviolet light is approximately 190 nm or more and 380 nm or less.

[0093] As the electron beam source, various electron beam accelerators can be used, such as Cockcroft-Waldt type, Van de Graaf type, resonant transformer type, insulating core transformer type, linear type, dynamitron type, and high frequency type. The energy of the electron beam is 1.6 × 10 -17 J or above 1.6×10 -16 J or less is preferable, and 1.6 × 10 -17 J or above 4.8×10 -17 The dose of the electron beam is preferably about 2 Mrad or more and 15 Mrad or less.

[0094] The ionizing radiation curable resin may be a known or commercially available product (for decorative sheets, hard coat films, veneers, wood flooring, etc.). Specifically, a composition containing at least one of a prepolymer, oligomer, and monomer having a polymerizable unsaturated bond or an epoxy group in the molecule is used.

[0095] Examples of the prepolymer or oligomer include methacrylates such as polyester methacrylate, polyether methacrylate, polyol methacrylate, and melamine methacrylate; urethane acrylates such as urethane acrylate, urethane dimethyl acrylate, and urethane trimethyl acrylate; and acrylates such as polyester acrylate, polyether acrylate, polyol acrylate, and melamine acrylate.

[0096] Examples of the monomer include styrene-based monomers such as styrene and α-methylstyrene; acrylic acid esters such as methyl acrylate, 2-ethylhexyl acrylate, methoxyethyl acrylate, butoxyethyl acrylate, butyl acrylate, and phenyl acrylate; and methacrylic acid esters such as methyl methacrylate, ethyl methacrylate, propyl methacrylate, ethoxymethyl methacrylate, phenyl methacrylate, and lauryl methacrylate.

[0097] Substituted amino alcohol esters of unsaturated acids include 2-(N,N-diethylamino)ethyl acrylate, 2-(N,N-diethylamino)ethyl methacrylate, 2-(N,N-dibenzylamino)methyl acrylate, and 2-(N,N-diethylamino)propyl acrylate.

[0098] Other examples include unsaturated carboxylic acid amides such as acrylamide and methacrylamide; monofunctional compounds such as ethyl carbitol acrylate and ethylene glycol acrylate; polyfunctional compounds such as ethylene glycol diacrylate, propylene glycol diacrylate, neobenzyl glycol diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, dipropylene glycol diacrylate, diethylene glycol dimethacrylate, and polyethylene glycol diacrylate; polythiol compounds with two or more thiol groups in the molecule such as trimethylolpropane trithioglycolate, trimethylolpropane trithiopropiolate, and dipentaerythritol tetrathioglycol; and acrylate monomers with three or more functional groups such as trimethylolpropane triacrylate, pentaerythritol hexaacrylate, and dipentaerythritol hexamethacrylate.

[0099] The method for forming a transparent surface protective layer using an ionizing radiation curable resin is not limited, but for example, it can be formed by irradiating a coating film of a composition (paint) containing the ionizing radiation curable resin with ionizing radiation. The ionizing radiation may be any radiation having energy that can act on the ionizing radiation curable resin contained in the paint and the photoradical polymerization initiator and sensitizer additives to initiate a radical polymerization reaction, and examples of such ionizing radiation include electromagnetic waves such as ultraviolet rays, X-rays, and gamma rays. Of these, electron beams are the most practical in terms of the curing ability of the coating film and the simplicity of the irradiation equipment. When irradiating with electron beams, for example, 2.8 × 10 -17 The coating can be crosslinked and cured by irradiating it with an electron beam under the conditions of 1000 keV and 5 Mrad (50 kGy).

[0100] The thickness of the transparent surface protective layer is not limited, but is usually 5 to 150 g / m2 in terms of solid content. 2 It is particularly desirable to set the thickness to 15 to 60 μm.

[0101] The transparent surface protective layer of the resulting decorative material may have surface irregularities. These surface irregularities are due to the irregularities of the adherend (e.g., wood substrate) itself, uneven application of adhesive, etc. In this case, it is preferable to polish the surface of the transparent surface protective layer. This makes it possible to suitably obtain a decorative material with a smooth surface of the transparent surface protective layer. Furthermore, one or more additional transparent surface protective layers may be formed on the polished transparent surface protective layer. Furthermore, the surface of the additionally formed transparent surface protective layer may be polished, and one or more additional transparent surface protective layers may be formed.

[0102] 3. Manufacturing method of decorative materials The method for producing a decorative material of the present invention comprises: (1) Step 1 of manufacturing a decorative material by attaching a decorative sheet to an adherend, The decorative sheet has a substrate sheet made of at least a polyolefin resin, a transparent resin layer, and a primer layer in this order, The surface of the decorative sheet is manufactured in such a way that the ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz is 40 to 100, as measured by a measurement method in accordance with JIS B0601:2013.

[0103] Because the manufacturing method of the present invention has the above-mentioned configuration, decorative materials are produced using the decorative sheet of the present invention, which has excellent coating adhesion, blocking resistance, scraping ability, and suitability for mirror finishing.Therefore, blocking of the decorative sheet is suppressed, and decorative materials with excellent coating adhesion, scraping ability, and suitability for mirror finishing can be easily produced.

[0104] (Process 1) Step 1 is a step of producing a decorative material by adhering a decorative sheet onto an adherend. The decorative sheet and adherend may be those described above for the decorative sheet and decorative material of the present invention.

[0105] The method for adhering the decorative sheet to the adherend is not particularly limited, and examples include a method of adhering via a known adhesive layer, etc. Alternatively, the decorative sheet may be adhered directly to the adherend by bringing the back primer layer of the decorative sheet into contact with the adherend.

[0106] By the above-described step 1, the decorative sheet is attached to the adherend, and the decorative material is produced.

[0107] (Process 2) The method for producing a decorative material of the present invention may further include (2) step 2, after step 1 above, of forming grooved portions and / or chamfered portions on the decorative sheet side of the decorative material.

[0108] The method for forming the grooved portion and chamfered portion is not particularly limited, and examples thereof include a method in which, depending on the characteristics of the final product, a grooved portion is formed by providing a V-shaped groove using a tenoner, and a chamfered portion is formed by chamfering the four sides.

[0109] The depth of the grooved portion is not particularly limited, but is preferably 0.1 to 1.0 mm, and more preferably 0.1 to 0.5 mm.

[0110] By the above-described step 2, grooved portions and / or chamfered portions are formed on the decorative sheet side of the decorative material.

[0111] (Step 3) The method for producing a decorative material of the present invention may include, after step 2 above, step 3 (3) of applying paint to the grooved portion and / or the chamfered portion.

[0112] The paint is not particularly limited, and any conventionally known paint may be applied, including, for example, colored inks and coating agents used in the design layer of the decorative sheet.

[0113] Examples of application methods include roll coating using a roller and die coating. In step 3, the paint may be applied not only to the grooved and / or chamfered portions formed in step 2, but also to areas of the decorative material including the grooved and / or chamfered portions. Alternatively, the paint may be applied to the entire surface of the decorative material from the primer layer side of the decorative material that has undergone step 2. Any paint adhering to areas other than the grooved and / or chamfered portions may be scraped off in step 4, which will be described later.

[0114] In step 3, the amount of paint to be applied to the surface of the decorative material is not particularly limited, and may be 50 to 150 g / m 2 The thickness of the paint is about 50 to 150 μm. In the grooved portion, paint 25 may be filled into grooved portion 23 as shown in FIG.

[0115] By the above-described step 3, paint is applied to the grooved portion and / or the chamfered portion.

[0116] (Step 4) The method for producing a decorative material of the present invention may include, after the above step 3, step (4) of scraping off the paint from the portions other than the grooved portions and / or chamfered portions.

[0117] The method for scraping off the paint is not particularly limited, and examples include scraping off the surface of the decorative material on which grooved and / or chamfered portions have been formed using a roller, squeegee, etc., or scraping off the paint using a suction nozzle.

[0118] In the decorative material of the present invention, the surfaces of the grooved portions 23 and chamfered portions 24 are located lower than the surface of the decorative material, as shown in Figure 3. Therefore, to scrape off paint from areas other than the grooved portions and / or chamfered portions in step 4, the paint can be scraped along the surface of the decorative material on which the grooved portions and / or chamfered portions are formed. This leaves paint 25 in the grooved portions 23 and paint 26 applied to the chamfered portions 24, as shown in Figure 4, and allows the paint to be scraped off from areas other than the grooved portions 23 and / or chamfered portions 24.

[0119] By the above-described step 4, the paint is scraped off from the portions other than the grooved portion and / or the chamfered portion.

[0120] (Coating film formation process) The manufacturing method for a decorative material of the present invention may further include a coating film formation step in which a coating film is formed on the decorative sheet side of the decorative material. By including the coating film formation step in the manufacturing method of the present invention, a coating film 27 is formed on the decorative sheet 1 side of the decorative material 2, as shown in Figure 4. In Figure 4, the decorative material 2 of the present invention has a grooved portion 23, which is a V-shaped or other linear groove, on the decorative sheet 1 side, and a coating material 25 is applied to the grooved portion 23 and filled in. In addition, the end on the decorative sheet 1 side has a chamfered portion 24, and a coating material 26 is applied to the chamfered portion 24. In Figure 4, by including step 5 in the manufacturing method of the present invention, the coating material 25 applied to the grooved portion 23 and the coating material 26 on the chamfered portion 24 are covered and sealed with the coating film 27.

[0121] The coating film forming step may be carried out after step 1, after step 2, or after steps 3 and 4. When the coating film forming step is carried out after steps 3 and 4, the decorative material shown in FIG. 4 is obtained.

[0122] The method for forming the coating film is not particularly limited, and it can be formed by applying a resin composition containing the resin components and the like described above as the coating film that constitutes the decorative material to the decorative sheet side of the decorative material, and then curing it using a method that hardens the coating film that constitutes the decorative material.

[0123] By the above-described step 5, a coating film is formed on the decorative sheet side of the decorative material. [Example]

[0124] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0125] Example 1 (Production of decorative sheets) A 2-μm thick urethane-cellulose resin back primer layer was formed on the back surface of a 60-μm-thick substrate sheet made of a colored polyolefin film. A 2-μm thick acrylic-urethane resin design layer was formed on the front surface of the substrate sheet by gravure printing. A 3-μm thick transparent adhesive layer was formed on the design layer using a urethane resin, and a 80-μm thick transparent olefin resin was then laminated on top of it using a hot-melt extrusion method to form a transparent resin layer. The transparent resin layer had a layer of maleic acid-modified PP (10 μm thick) on the transparent adhesive layer side, and a layer of random PP (70 μm thick) was laminated on the maleic acid-modified PP layer.

[0126] An embossing process was performed on the transparent resin layer to form a concave-convex pattern. The surface of the decorative sheet was then subjected to a corona discharge treatment. A primer layer-forming resin composition, which was a blend of 100 parts by mass of acrylic-urethane copolymer resin, 6 parts by mass of HMDI curing agent, and 22 parts by mass of silica with an average particle size of 2 μm, was then applied to the transparent resin layer to form a primer layer with a thickness of 2 μm, thereby producing a decorative sheet. The RSm / Rz of the surface of the decorative sheet was 63. The RSm, Rz, and RSm / Rz of the surface of the decorative sheet were measured using the following measurement methods.

[0127] (Method for measuring RSm, Rz, and RSm / Rz) An area of ​​5 cm length and 5 cm width was arbitrarily selected on the surface of the decorative sheet. Five points were arbitrarily selected within this area, and the average length RSm and maximum height Rz of the roughness curve elements were measured in the width direction (TD) of the decorative sheet under measurement conditions (evaluation length 40 mm) in accordance with JIS B0633:2001 using a measurement method in accordance with JIS B0601:2013, and the average values ​​of the five points were taken as the measured values ​​of RSm and Rz. Next, RSm / Rz was calculated from the measured values ​​of RSm and Rz.

[0128] (Production of decorative materials) The decorative material was prepared by attaching 12mm lauan plywood to the primer layer on the back of the decorative sheet. A urethane-modified ethylene vinyl acetate emulsion adhesive (amount applied was 9 g / 30.3 cm in wet form, including solvent) was used for the attachment. 2 ) was used.

[0129] Example 2 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the amount of silica in the resin composition for forming the primer layer was 10 parts by mass, and embossing was performed to set the RSm / Rz of the surface of the decorative sheet to 67.

[0130] Example 3 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the amount of silica in the resin composition for forming the primer layer was 30 parts by mass, and embossing was performed to set the RSm / Rz of the surface of the decorative sheet to 62.

[0131] Example 4 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the amount of silica in the resin composition for forming the primer layer was 22 parts by mass, and embossing was performed to set the RSm / Rz of the surface of the decorative sheet to 40.

[0132] Example 5 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the amount of silica in the resin composition for forming the primer layer was 22 parts by mass, and embossing was performed to set the RSm / Rz of the surface of the decorative sheet to 100.

[0133] Example 6 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the average particle diameter of the silica in the resin composition for forming the primer layer was 4 μm, the blending amount was 10 parts by mass, no embossing was performed, and the RSm / Rz of the surface of the decorative sheet was 40.

[0134] Example 7 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the silica content of the resin composition for forming the primer layer was 22 parts by mass, and embossing was performed using a chill roll embossing method using a chill roll with a surface temperature of 40°C, resulting in an RSm / Rz of 60 on the surface of the decorative sheet.

[0135] Comparative Example 1 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that the amount of silica in the resin composition for forming the primer layer was 22 parts by mass, and embossing was applied to set the RSm / Rz of the surface of the decorative sheet to 22.

[0136] Comparative Example 2 A decorative sheet and decorative material were obtained in the same manner as in Example 1, except that silica was not blended into the resin composition for forming the primer layer, embossing was not performed, and RSm / Rz of the surface of the decorative sheet was set to 150.

[0137] (evaluation) The decorative sheets and decorative boards of the Examples and Comparative Examples produced as described above were evaluated by the following methods.

[0138] Blocking resistance The decorative sheets of the above examples and comparative examples were cut into squares measuring 5 cm long x 5 cm wide, and the decorative sheet was laminated so that the primer layer of the decorative sheet was in contact with the base sheet, producing a laminate simulating a roll of decorative sheet. The resulting laminate was left in an oven at 40°C for 24 hours under a pressure of 0.49 MPa. The laminate was then removed from the oven, and the decorative sheets constituting the laminate were peeled off by hand. The peel resistance was confirmed, and the appearance of the laminate was visually observed. Evaluation was performed according to the following evaluation criteria. A rating of + or higher was deemed acceptable for practical use. ++: The decorative sheets constituting the laminate could be easily peeled off without any resistance to peeling, and there was no change in the appearance of the contact areas between the decorative sheets of the laminate. +: When peeling off the sheets that make up the laminate, there was resistance to peeling, and the gloss changed at the contact points between the sheets of the laminate (the gloss of the base sheet was transferred to the surface of the primer layer). -: The decorative sheets that make up the laminate could not be easily peeled off, and the primer layer was transferred (to the base sheet) at the contact points between the decorative sheets of the laminate, or cohesive failure of the primer layer was observed.

[0139] Scraping ability A V-shaped groove having a depth of 0.5 mm was formed on the surface of the decorative material of the above Examples and Comparative Examples, and paint was applied to the groove by roll coating using a roller. The excess paint was then scraped off using a roller. The appearance of the surface of the decorative material before and after the paint was applied was visually observed and evaluated according to the following evaluation criteria. A rating of + or higher was deemed acceptable for practical use. ++: No color change +: Color change was slight -: Color change was obvious

[0140] Recoatability An acrylic ultraviolet-curable resin containing a photopolymerization initiator was roll-coated onto the primer layer of each of the decorative materials of the above Examples and Comparative Examples to a solid content of 60 g / m 2 The uncured resin layer was then coated and dried so that the thickness was such that the resin was cured by irradiating the uncured resin layer with a light intensity of 100 W / cm using a high-pressure mercury lamp as the light source, forming a 60 μm thick coating film that was an ultraviolet-curable resin layer.

[0141] After making a cross-cut (an X-shaped cut) in the primer layer, a 24 mm wide piece of Nichiban Cellotape (registered trademark) was applied and then rapidly peeled off five times in succession to the cross-cut area. The coating film was visually inspected for peeling and evaluated according to the following evaluation criteria. A rating of + or higher was deemed acceptable for practical use. ++: No peeling of the coating +: The coating film partially peeled off (a part of the test area peeled off) -: The coating peeled off completely (the entire test area peeled off)

[0142] Mirror finish suitability An acrylic ultraviolet-curable resin containing a photopolymerization initiator was roll-coated onto the primer layer of each of the decorative materials of Example 1 and Comparative Example 1 to a solid content of 60 g / m 2 The uncured resin layer was then coated and dried to form an uncured UV-curable resin layer. Next, a high-pressure mercury lamp was used as the light source, and the uncured resin layer was irradiated with light at a dose of 100 W / cm to cure the resin, forming a 60 μm thick UV-curable resin coating. If the surface of the coating did not achieve a mirror finish, it was sanded with paper after the coating was formed to achieve a mirror finish. Evaluation was based on the following criteria: +: The surface of the coating was mirror-finished without sanding. -: Paper polishing was required to achieve a mirror finish.

[0143] The results are shown in Table 1.

[0144] [Table 1] [Explanation of symbols]

[0145] 1. Decorative sheet 11. Back primer layer 12. Base sheet 13. Pattern layer 14...Transparent adhesive layer 15...Transparent resin layer 16. Primer layer 17···Uneven pattern 2. Decorative materials 21...Adherent material 22...Adhesive layer 23...Groove processing section 24 Chamfered part 25, 26...paint 27. Coating

Claims

1. A decorative sheet having a transparent resin layer and a primer layer in this order on a substrate sheet made of at least a polyolefin resin, The surface of the decorative sheet has a ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of 40 to 100; The RSm is 100 to 600 μm, The Rz is 2 to 15 μm. A decorative sheet characterized by:

2. The decorative sheet according to claim 1 , wherein the primer layer contains an inorganic filler.

3. 3. The decorative sheet according to claim 2, wherein the content of said inorganic filler is 10 to 30 parts by mass per 100 parts by mass of the cured resin component that forms said primer layer.

4. The decorative sheet according to any one of claims 1 to 3, which has an uneven pattern on its surface.

5. A decorative material having an adherend on the surface of the decorative sheet according to any one of claims 1 to 4 opposite to the primer layer.

6. The decorative material according to claim 5 , wherein said decorative sheet has grooved portions and / or chamfered portions.

7. The decorative material according to claim 6 , wherein the grooved portion and / or the chamfered portion is coated with paint.

8. The decorative material according to any one of claims 5 to 7, which has a coating film on the primer layer.

9. The decorative material according to claim 8, wherein the coating film is made of an ionizing radiation curable resin.

10. The decorative material according to claim 9 , wherein the ionizing radiation curable resin is an ultraviolet curable resin.

11. (1) Step 1 of manufacturing a decorative material by attaching a decorative sheet to an adherend, The decorative sheet has a substrate sheet made of at least a polyolefin resin, a transparent resin layer, and a primer layer in this order, The surface of the decorative sheet has a ratio (RSm / Rz) of the average length RSm of the roughness curve elements to the maximum height Rz, measured by a measurement method in accordance with JIS B0601:2013, of 40 to 100; The RSm is 100 to 600 μm, The Rz is 2 to 15 μm, The surface of the decorative sheet opposite to the surface is attached to the adherend. A method for producing a cosmetic material, comprising:

12. After step 1, (2) Step 2: Forming grooved portions and / or chamfered portions on the decorative sheet side of the decorative material; (3) applying paint to the grooved portion and / or the chamfered portion; and (4) Step 4: Scrape off paint from areas other than the grooved portion and / or the chamfered portion having The method of claim 11.

13. The manufacturing method according to claim 11 or 12, further comprising a coating film forming step of forming a coating film on the decorative sheet side of the decorative material.

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