WO2023249082A1 - 化粧シート - Google Patents
化粧シート Download PDFInfo
- Publication number
- WO2023249082A1 WO2023249082A1 PCT/JP2023/023147 JP2023023147W WO2023249082A1 WO 2023249082 A1 WO2023249082 A1 WO 2023249082A1 JP 2023023147 W JP2023023147 W JP 2023023147W WO 2023249082 A1 WO2023249082 A1 WO 2023249082A1
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- WO
- WIPO (PCT)
- Prior art keywords
- protective layer
- decorative sheet
- surface protective
- layer
- ionizing radiation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F122/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
- C08F122/10—Esters
- C08F122/1006—Esters of polyhydric alcohols or polyhydric phenols, e.g. ethylene glycol dimethacrylate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D135/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D135/02—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
- D21H19/68—Coatings characterised by a special visual effect, e.g. patterned, textured uneven, broken, discontinuous
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/02—Patterned paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/28—Multiple coating on one surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/406—Bright, glossy, shiny surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/538—Roughness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/737—Dimensions, e.g. volume or area
- B32B2307/7375—Linear, e.g. length, distance or width
- B32B2307/7376—Thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2451/00—Decorative or ornamental articles
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02161—Floor elements with grooved main surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
Definitions
- the present invention relates to a decorative sheet.
- Decorative sheets are used, for example, to decorate the interior and exterior materials of fittings, furniture, fixtures, and flooring materials in order to add design and durability to them.
- a decorative sheet is generally widely used as a decorative board that is attached to the surface of a substrate such as wood, a wooden board, a metal plate, a noncombustible board, a paper substrate, a resin substrate, etc. via an adhesive or the like.
- Designability is imparted by forming patterns such as wood grain or stone grain using various printing methods, for example. Plain sheets with no patterns are sometimes preferred for decorative sheets. The presence or absence of a pattern and the type of pattern vary depending on the purpose and preference.
- the glossiness of the surface is also important for the design of decorative sheets.
- a variety of decorative sheets are selected depending on the purpose and preference, from mirror-like high-gloss sheets to low-gloss sheets with no reflections at all.
- imparting durability is an important function of decorative sheets as well as imparting design. Durability is a comprehensive evaluation of scratch resistance, stain resistance, and whether these properties can be maintained over a long period of time. Although requirements vary depending on the environment and situation in which the decorative sheet is used, there is always a demand for decorative sheets with high performance.
- a surface protective layer on the outermost surface of the decorative sheet. Furthermore, in order to adjust the glossiness described above, particularly to achieve low gloss, it is common to add a gloss adjuster (matting additive) to the surface protective layer.
- decorative sheets are generally subjected to processing such as cutting and bending in order to form decorative materials such as decorative boards, it is preferable that the decorative sheets have processability that can withstand these processes.
- An object of the present invention is to provide a decorative sheet that provides a rough texture.
- the invention includes a raw fabric layer and a surface protective layer provided on one surface of the raw fabric layer, and a plurality of ridges each protruding in the shape of a ridge on the surface of the surface protective layer.
- the decorative sheet is provided with an uneven structure including shaped portions, and the uneven structure of the surface protective layer has a protruding peak height Rpk of 3.5 ⁇ m or more.
- a decorative sheet according to the above aspect in which the protruding peak height Rpk is 25 ⁇ m or less.
- a decorative sheet according to any of the above aspects, wherein the uneven structure of the surface protective layer has an average length RSm of roughness curve elements of 150 ⁇ m or more.
- a decorative sheet according to the above aspect in which the average length RSm is 1000 ⁇ m or less.
- a decorative sheet according to any of the above aspects, wherein the surface protective layer has a thickness of 8 ⁇ m or more.
- a decorative sheet according to any of the above aspects, wherein the surface protective layer has a glossiness of 10.0 or less.
- At least some of the plurality of ridged portions are adjacent to each other in the width direction, and at a position where the at least some of the plurality of ridged portions are adjacent to each other in the width direction, the above-mentioned
- a decorative sheet according to any of the above side surfaces is provided, in which a cross section parallel to the width direction and the thickness direction of the surface protective layer has a sinusoidal wave shape in the portion where the uneven structure is provided.
- the surface protective layer includes a cured product of an ionizing radiation-curable resin.
- the ionizing radiation-curable resin is an acrylate containing a repeating structure as a main component, and the repeating structure is any one of ethylene oxide, propylene oxide, and ⁇ -caprolactone,
- the repeating structure is repeated three or more times.
- a decorative material comprising a decorative sheet according to any of the above aspects and a base material to which the decorative sheet is attached.
- FIG. 1 is a sectional view of a decorative material including a decorative sheet according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a surface protective layer included in the decorative sheet of FIG. 1.
- FIG. 3 is a microscopic image of a surface protective layer included in a decorative sheet according to an example of the present invention.
- FIG. 1 is a sectional view of a decorative material including a decorative sheet according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a surface protective layer included in the decorative sheet of FIG. 1.
- FIG. 3 is a micrograph of a surface protective layer included in a decorative sheet according to an example of the present invention.
- the cross section shown in FIG. 2 is a cross section along the thickness direction of the surface protective layer.
- the micrograph in FIG. 3 is a planar photograph obtained using a laser microscope (OLS-4000 manufactured by Olympus Corporation).
- the decorative material 11 shown in FIG. 1 includes a base material B and a decorative sheet 1 attached to the base material B.
- the decorative material 11 is a decorative board.
- the decorative board may be flat, bent or folded.
- the decorative material 11 may have a shape other than a plate.
- the base material B is a plate material here.
- the board material is, for example, a wooden board, an inorganic board, a metal board, or a composite board made of a plurality of materials.
- the base material B may have a shape other than a plate.
- the decorative sheet 1 includes a raw fabric layer 2, a pattern layer 3, a transparent resin layer 4, a surface protection layer 5, an adhesive layer 7, a primer layer 6, and a concealing layer 8.
- the pattern layer 3, the adhesive layer 7, the transparent resin layer 4, and the surface protection layer 5 are provided in this order from the raw fabric layer 2 side on the surface of the raw fabric layer 2 opposite to the surface facing the substrate B.
- the hiding layer 8 and the primer layer 5 are provided in this order on the surface of the raw material layer 2 facing the substrate B from the raw material layer 2 side.
- One or more of the pattern layer 3, transparent resin layer 4, primer layer 6, adhesive layer 7, and hiding layer 8 may be omitted. Below, the elements included in the decorative sheet 1 will be explained in order.
- Raw fabric layer The raw fabric layer 2 or its material can be arbitrarily selected from paper, synthetic resin, synthetic resin foam, rubber, nonwoven fabric, synthetic paper, metal foil, etc. It is.
- paper include thin paper, titanium paper, and resin-impregnated paper.
- synthetic resin include polyethylene, polypropylene, polybutylene, polystyrene, polycarbonate, polyester, polyamide, ethylene-vinyl acetate copolymer, polyvinyl alcohol, and acrylic.
- Rubbers include ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber, styrene-butadiene copolymer rubber, styrene-isoprene-styrene block copolymer rubber, styrene-butadiene-styrene block copolymer rubber, and polyurethane.
- I can give an example.
- the nonwoven fabric organic or inorganic nonwoven fabric can be used.
- the metal of the metal foil include aluminum, iron, gold, and silver.
- the thickness of the raw fabric layer 2 is preferably within the range of 20 ⁇ m or more and 250 ⁇ m or less, considering printing workability, cost, etc.
- Primer layer When using an olefin resin as the material for the raw fabric layer 2, the surface of the raw fabric layer 2 is often in an inactive state. Therefore, in this case, it is preferable to provide the primer layer 6 between the raw fabric layer 2 and the base material B.
- the primer layer 6 is omitted, and in order to improve the adhesion between the raw fabric layer 2 and the base material B, the raw fabric layer 2 is subjected to, for example, corona treatment.
- Surface modification treatments such as , plasma treatment, ozone treatment, electron beam treatment, ultraviolet ray treatment, and dichromic acid treatment may be performed.
- the material for the primer layer 6 for example, the material described later for the pattern layer 3 can be used. Since the primer layer 6 is applied to the back side of the decorative sheet 1, considering that the decorative sheet 1 will be wound up into a web, the primer layer 6 is applied to avoid blocking and increase adhesion with the adhesive.
- Inorganic fillers may also be added to layer 6. Examples of the inorganic filler include silica, alumina, magnesia, titanium oxide, and barium sulfate.
- a colored sheet may be used as the raw fabric layer 2, or an opaque hiding layer 8 may be provided.
- the concealing layer 8 can be made of, for example, the same material as that described later for the pattern layer 3.
- the purpose of the hiding layer 8 is to provide hiding properties, it is preferable to use, for example, an opaque pigment, titanium oxide, iron oxide, etc. as the pigment.
- metals such as gold, silver, copper, aluminum, etc. to the material of the hiding layer 8, for example. Generally, flaky aluminum pieces are often added.
- the pattern layer 3 is a layer formed by printing a pattern on the raw fabric layer 2 using ink.
- the binder for the ink for example, nitrified cotton, cellulose, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polyurethane, acrylic, polyesters, or modified products thereof may be used alone or in combination. can.
- the binder may be water-based, solvent-based, or emulsion type, and may be a one-part type or a two-part type using a hardening agent.
- the pattern layer 3 may be formed by a method in which a layer made of curable ink is cured by irradiation with ultraviolet rays, electron beams, or the like.
- the ink used to form the pattern layer 3 may further contain, for example, colorants such as pigments and dyes, extender pigments, solvents, and various additives that are contained in ordinary inks. can.
- colorants such as pigments and dyes, extender pigments, solvents, and various additives that are contained in ordinary inks. can.
- highly versatile pigments include pearl pigments such as condensed azo, insoluble azo, quinacridone, isoindoline, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, and mica.
- Adhesive layer 7 is a layer also called a heat-sensitive adhesive layer, an anchor coat layer, or a dry laminate adhesive layer.
- the resin material for the adhesive layer 7 is not particularly limited, but can be appropriately selected from, for example, acrylic, polyester, polyurethane, and epoxy resin materials. Further, as the resin material for the adhesive layer 7, for example, an ethylene-vinyl acetate copolymer resin adhesive can also be used.
- the coating method can be appropriately selected depending on the viscosity of the adhesive and the like. Generally, gravure coating is used, and after forming an adhesive layer 7 on the upper surface of the pattern layer 3 by gravure coating, the transparent resin layer 4 is laminated thereon. Note that the adhesive layer 7 can be omitted if sufficient adhesive strength can be obtained between the transparent resin layer 4 and the pattern layer 3.
- olefin resin As the resin material for the transparent resin layer 4, an olefin resin is suitably used.
- olefin resins include polypropylene, polyethylene, polybutene, and ⁇ -olefins (e.g., propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1 -decene, 1-undecene, 1-dodecene, tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-nonadecene, 1-eicosene, 3-methyl-1-butene, 3 -Methyl-1-pentene, 3-ethyl-1-pentene, 4-methyl-1-pentene, 4-methyl-1-hexene, 4,4-dimethyl-1-penten
- ethylene-vinyl acetate copolymer ethylene-vinyl alcohol copolymer, ethylene-methyl methacrylate copolymer, ethylene-ethyl methacrylate copolymer, ethylene-butyl methacrylate copolymer, ethylene-methyl acrylate copolymer
- examples include copolymers of ethylene or ⁇ -olefin and other monomers, such as ethylene-ethyl acrylate copolymer and ethylene-butyl acrylate copolymer.
- the resin for the transparent resin layer 4.
- various additives such as a heat stabilizer, a light stabilizer, an antiblocking agent, a catalyst scavenger, a coloring agent, a light scattering agent, and a gloss adjusting agent may be added to the transparent resin layer 4 as necessary. You can also.
- heat stabilizers phenol-based, sulfur-based, phosphorus-based, hydrazine-based, etc. are generally added, and as light stabilizers, hindered amine-based, etc. are added in arbitrary combinations.
- the surface protective layer 5 includes a core portion 5A and a plurality of ridged portions 5B, each of which protrudes in a ridge shape from one surface of the core portion 5A. These ridged portions 5B form an uneven structure.
- ridged refers to a convex shape that is linear in plan view.
- the ridged portion 5B may have a curved or linear shape in plan view, but is preferably curved from the viewpoint of fingerprint resistance of the decorative sheet 1.
- Each of the ridged portions 5B may or may not be branched in plan view.
- the ridged portion 5B is, for example, a portion from the lowest part to the tip of the uneven shape provided on the surface of the surface protective layer 5, and the core portion 5A is the ridged portion of the surface protective layer 5. This refers to the part excluding section 5B.
- the ridged portions 5B are each curved, and at least some of them are adjacent to each other in the width direction.
- a cross section of the surface protection layer 5 parallel to the width direction and the thickness direction of the surface protection layer 5 has an uneven structure as shown in FIG.
- the portion where is provided has a wave shape such as a sine wave shape.
- the uneven structure of the surface protective layer 5 has a protruding peak height Rpk of 3.5 ⁇ m or more.
- the "protruding peak height Rpk” is a surface texture parameter defined in JIS B0671-2:2002. This protruding peak height Rpk is more preferably 4.5 ⁇ m or more, and even more preferably 7.0 ⁇ m or more.
- This decorative sheet with a reduced protruding peak height Rpk is designed to provide a comfortable surface to the user when the user slides his/her skin on the surface of the surface protective layer, for example, when the user slides his/her finger on the surface of the surface protective layer. Does not give a rough texture.
- This protruding peak height Rpk is preferably 25 ⁇ m or less, more preferably 20 ⁇ m or less, and even more preferably 15 ⁇ m or less. It is difficult to manufacture a decorative sheet with a large protruding peak height Rpk with high reproducibility.
- the uneven structure of the surface protective layer 5 preferably has an average length RSm of roughness curve elements of 150 ⁇ m or more, more preferably 200 ⁇ m or more, and even more preferably 250 ⁇ m or more.
- the "average length RSm of roughness curve elements" is a surface texture parameter defined in JIS B0601:2013.
- the average of the roughness curve elements is important.
- the length RSm is within the above range.
- This average length RSm is preferably 1000 ⁇ m or less, more preferably 900 ⁇ m or less, and even more preferably 800 ⁇ m or less. If the average length RSm is increased, the user may perceive the presence of the ridged portions 5B less frequently when the user slides his/her skin on the surface of the surface protective layer. According to other examples, the average length RSm may be less than or equal to 600 ⁇ m, may be less than or equal to 550 ⁇ m, and may be less than or equal to 500 ⁇ m.
- the thickness of the surface protective layer 5 is preferably 8 ⁇ m or more, more preferably 10 ⁇ m or more, and even more preferably 15 ⁇ m or more.
- the thickness of the surface protective layer 5 is reduced, it becomes difficult to increase the protruding peak height Rpk and the average length RSm.
- the thickness of the surface protective layer 5 is increased, the protruding peak height Rpk and the average length RSm tend to increase.
- the thickness of the surface protective layer 5 is preferably 30 ⁇ m or less, and more preferably 25 ⁇ m or less.
- the thickness of the surface protective layer 5 is the thickness of a layer that has the same apparent area and volume as the surface protective layer 5 and has a flat surface.
- the thickness of the surface protective layer 5 is determined, for example, by the following method. First, a cross section parallel to the thickness direction of the surface protective layer 5 and perpendicular to the length direction of the ridged portion 5B is imaged. Next, from this cross-sectional image, the dimensions of the surface protective layer 5 in the width direction of the ridged portion 5B and the cross-sectional area of the surface protective layer 5 are determined. The thickness of the surface protective layer 5 is a value obtained by dividing this area by the above dimension.
- the thickness of the coating film made of the surface protective layer coating liquid is equal to the thickness of the surface protective layer 5.
- the glossiness of the surface protective layer 5 is preferably 10.0 or less, more preferably 8.0 or less.
- gloss is a value measured at an incident angle of 60 degrees using a gloss meter based on JIS Z8741:1997.
- the decorative sheet 1 is manufactured, for example, by the following method.
- the pattern layer 3, transparent resin layer 4, primer layer 6, adhesive layer 7, and concealing layer 8 will be omitted.
- a coating film made of a surface protective layer coating liquid is formed on one side of the raw fabric layer 2.
- This coating film can be applied, for example, by various printing methods such as gravure printing, offset printing, screen printing, electrostatic printing, and inkjet printing, as well as roll coating, knife coating, microgravure coating, die coating, etc. It can be formed by various coating methods.
- the coating liquid for the surface protective layer contains an ionizing radiation-curable resin.
- ionizing radiation is a charged particle beam such as an electron beam.
- Ionizing radiation-curable resins are cured by irradiation with ionizing radiation.
- Ionizing radiation-curable resins can also be cured by ultraviolet irradiation.
- the ionizing radiation-curable resin used here is cured by irradiation with light having a wavelength of 200 nm or less, and has a large absorption coefficient for this light.
- the amount of the ionizing radiation-curable resin is preferably 60 parts by mass or more, more preferably 70 parts by mass or more, More preferably, the amount is 80 parts by mass or more.
- the ionizing radiation-curable resin known ones such as various monomers and commercially available oligomers can be used, such as (meth)acrylic resins, silicone resins, polyester resins, urethane resins, and amide resins. Resin and epoxy resin can be used.
- the ionizing radiation-curable resin may be either an aqueous resin or a non-aqueous (organic solvent-based) resin.
- the main component of the ionizing radiation curable resin is preferably acrylate.
- the main component of the ionizing radiation-curable resin means that it is 60 parts by mass or more when the total solid content contained in the ionizing radiation-curable resin is 100 parts by mass.
- the ionizing radiation-curable resin preferably contains acrylate in an amount of 70 parts by mass or more, more preferably 80 parts by mass or more.
- the acrylate is preferably a difunctional or higher functional acrylate, more preferably a trifunctional or higher functional acrylate.
- the acrylate is preferably trifunctional or more functional.
- there is no upper limit to the number of functional groups in the acrylate one example is 6 functional groups or less.
- the acrylate contains a repeating structure.
- This repeating structure is, for example, any one of an ethylene oxide (EO) structure, a propylene oxide (PO) structure, and an ⁇ -caprolactone (CL) structure.
- the repeating structure is ethylene oxide or propylene oxide.
- the above-mentioned repeating structure may be interposed between an acryloyl group and a methylol group in an open ring state.
- the number of repetitions of the repeating structure is preferably 3 or more. If an acrylate is used which is repeated a large number of times, the cured film is likely to expand in the in-plane direction in the first irradiation step described later, and therefore wrinkles corresponding to the ridged portions 5B are likely to be formed on the surface of the coating film. Become. However, if the number of repetitions is increased, the crosslinking density will decrease and the scratch resistance of the surface protective layer will decrease.
- the trifunctional acrylate containing a repeating structure is, for example, EO-modified, PO-modified or CL-modified trimethylolpropane triacrylate, glycerin triacrylate, isocyanurate triacrylate, or pentaerythritol triacrylate.
- the number of repetitions of the repeating structure is preferably 3 or more and 30 or less, more preferably 3 or more and 20 or less.
- the tetrafunctional acrylate containing a repeating structure is, for example, EO-modified, PO-modified, or CL-modified pentaerythritol tetraacrylate.
- the number of repeats of the repeating structure is preferably 12 or more, more preferably 12 or more and 50 or less, and even more preferably 20 or more and 50 or less.
- the number of repetitions of the above-mentioned repeating structure can be analyzed by using MALDI-TOF-MS.
- Ionizing radiation-curable resins may have a molecular weight distribution.
- the number of repetitions described above is the number of repetitions corresponding to the molecular weight having the strongest peak in the mass spectrum of MALDI-TOF-MS.
- the surface protective layer coating liquid further contains particles.
- particles When particles are included in the surface protective layer coating liquid, wrinkles can be more uniformly formed on the surface of the coating film in the first irradiation step.
- the particles include particles made of organic materials such as polyethylene (PE) wax, polypropylene (PP) wax, and resin beads, or particles made of inorganic materials such as silica, glass, alumina, titania, zirconia, calcium carbonate, and barium sulfate. Particles can be used.
- organic materials such as polyethylene (PE) wax, polypropylene (PP) wax, and resin beads
- inorganic materials such as silica, glass, alumina, titania, zirconia, calcium carbonate, and barium sulfate. Particles can be used.
- the average particle diameter (D50) of the particles is preferably 10 ⁇ m or less.
- the average particle diameter (D50) of the particles is more preferably 1 ⁇ m or more and 8 ⁇ m or less, and still more preferably 2 ⁇ m or more and 6 ⁇ m or less.
- the particles tend to fall off from the surface protective layer 5, and it may be difficult to achieve high scratch resistance.
- the particles are small, the effect of uniformly forming wrinkles is small.
- the "average particle size (D50)" is the median diameter (D50) measured with a laser diffraction/scattering particle size distribution measuring device.
- the coating liquid for surface protective layer contains particles
- the surface protective layer 5 obtained from this coating liquid also contains particles.
- the average particle diameter of the particles included in the surface protective layer 5 can be determined by observing the cross section, actually measuring the particle diameters of a plurality of particles, and averaging them. The value obtained in this manner is substantially the same as the median diameter (D50) measured by a laser diffraction/scattering particle size distribution measuring device. Therefore, the range of the average particle size mentioned above can also be read as the range of the average particle size of the particles included in the surface protective layer 5.
- the amount of particles added is preferably 0.5 parts by mass or more and 10 parts by mass or less, more preferably 2 parts by mass or more and 8 parts by mass or less, and 2 parts by mass or less, based on 100 parts by mass of the ionizing radiation curable resin. It is more preferably at least 6 parts by mass. When the amount of particles is within the above range, the effect of uniformly forming wrinkles is particularly large.
- the coating liquid for the surface protective layer can further contain a solvent and additives for improving the functionality of the final product, such as antibacterial agents and antifungal agents.
- the surface protective layer coating liquid can further contain other additives such as ultraviolet absorbers and light stabilizers.
- ultraviolet absorber for example, benzotriazole type, benzoate type, benzophenone type, triazine type, etc. can be used.
- light stabilizer for example, hindered amine type and the like can be used. Note that, according to the method described herein, the surface protective layer 5 having low glossiness can be formed without using a gloss adjuster (matting additive).
- the surface protective layer coating liquid further contains a photoinitiator.
- the photoinitiator include, but are not limited to, benzophenone-based, acetophenone-based, benzoin ether-based, and thioxanthone-based photoinitiators.
- a first irradiation step is performed.
- the coating film is irradiated with light having a wavelength of 200 nm or less (hereinafter referred to as first irradiation light).
- the ionizing radiation-curable resin contained in the surface protective layer coating liquid has a large extinction coefficient with respect to the first irradiation light. Therefore, the first irradiation light incident on the coating film can only reach a distance of several tens to hundreds of nanometers from the outermost surface. Therefore, in the first irradiation step, the crosslinking reaction proceeds in the surface area of the coating film to form an extremely thin cured film, while the other areas do not undergo the crosslinking reaction and remain uncured.
- the coating film after the first irradiation step has wrinkles on the surface corresponding to the ridged portions 5B.
- the present inventor considers the reason why wrinkles occur on the surface of the coating film due to the first irradiation step as follows.
- the first irradiation light can only reach a distance of several tens to several hundred nm from the outermost surface of the coating film. That is, the crosslinking reaction of the ionizing radiation-curable resin occurs only on the surface of the coating film.
- the monomers, etc. present on the surface of the coating film form a cured film by crosslinking through their functional groups when irradiated with the first irradiation light, but all of those functional groups are It is not used for crosslinking between monomers present on the surface of the coating film. That is, uncrosslinked functional groups may remain in the cured film.
- the first irradiation light does not reach the monomers located at a distance from the surface of the coating film, so their crosslinking reaction does not occur. However, some of the monomers located away from the surface of the coating migrate to the cured film, where they undergo a crosslinking reaction. In this way, the number of molecules involved in the crosslinking reaction is increased.
- the volume of the cured film increases. Since the crosslinking reaction occurs only on the surface of the coating film, the cured film cannot increase its volume in the thickness direction, but expands in the in-plane direction. As a result, wrinkles occur on the surface of the coating film.
- the first irradiation light can be extracted from excimer VUV (Vacuum Ultra Violet) light.
- Excimer VUV light can be produced from lamps using noble gases or noble gas halide compounds.
- a gas such as a rare gas or a rare gas halide compound
- This plasma discharge excites the atoms of the discharge gas (rare gas) and instantaneously becomes an excimer state.
- this excimer state When returning from this excimer state to the ground state, it emits light in a wavelength range unique to that excimer.
- the gas used in the excimer lamp may be any conventionally used gas as long as it emits light of 200 nm or less.
- a rare gas such as Xe, Ar, or Kr
- a mixed gas of a rare gas such as ArBr or ArF and a halogen gas
- Excimer lamps have different wavelengths (center wavelengths) depending on the gas, such as approximately 172 nm (Xe), approximately 126 nm (Ar), approximately 146 nm (Kr), approximately 165 nm (ArBr), and approximately 193 nm (ArF).
- a xenon lamp that emits excimer light with a center wavelength of 172 nm as the light source. Further, even considering the cost of equipment maintenance and the availability of materials, it is preferable to use a xenon lamp as the light source.
- the first irradiation step is performed in an atmosphere with a low oxygen concentration.
- Oxygen has a large absorption coefficient for light of 200 nm or less. Therefore, the first irradiation step is preferably performed under a nitrogen gas atmosphere, for example.
- the oxygen concentration in the gas phase in the first irradiation step, that is, the residual oxygen concentration in the reaction atmosphere is preferably 2000 ppm or less, more preferably 1000 ppm or less.
- oxygen in the atmosphere inhibits radical polymerization. Therefore, the residual oxygen concentration in the reaction atmosphere influences the formation of wrinkles on the coating surface. Therefore, when the residual oxygen concentration in the reaction atmosphere is changed, the surface properties of the surface protective layer 5 can also be changed.
- the cumulative light amount of the first irradiation light is preferably 0.5 mJ/cm 2 or more and 200 mJ/cm 2 or less, more preferably 1 mJ/cm 2 or more and 100 mJ/cm 2 or less, and 3 mJ/cm 2 or more and 50 mJ It is more preferable to set it to below / cm2 .
- the integrated light amount is reduced, the expansion of the cured film in the in-plane direction becomes smaller.
- the cumulative amount of light is increased, the surface condition of the coating film deteriorates.
- a second irradiation step is performed.
- the coating film is irradiated with second radiation or irradiation light to cure the entire coating film. Thereby, a surface protective layer 5 is obtained.
- the second radiation or irradiation light is ionizing radiation such as an electron beam, or ultraviolet light whose wavelength is longer than that of the first irradiation light.
- the cumulative light amount of the second irradiation light is preferably 10 mJ/cm 2 or more and 500 mJ/cm 2 or less, and preferably 50 mJ/cm 2 or more and 400 mJ/cm 2 or less. More preferably, it is 100 mJ/cm 2 or more and 300 mJ/cm 2 or less.
- the decorative sheet 1 can be manufactured, for example, by the method described above.
- the decorative sheet 1 may be manufactured by other methods.
- a plate may be formed using the method described above for the surface protective layer 5, and the surface protective layer 5 having an uneven structure on the surface may be formed by transfer using this plate.
- the surface protective layer 5 has the surface properties described above.
- Such a decorative sheet 1 provides a rough tactile sensation to the user when the user slides his/her skin on the surface of the surface protective layer 5, for example, when the user slides his/her finger on the surface of the surface protective layer 5. give. That is, this decorative sheet 1 allows the user to feel the presence of large irregularities.
- the decorative sheet 1 that provides a rough tactile sensation to the user is suitable for use when the item that comes into contact with the user's skin often has a rough tactile feel and whose appearance is to be reproduced with the decorative sheet 1.
- the decorative sheet 1 is suitable for use on furniture and the like.
- the surface protective layer 5 of the decorative sheet 1 has the above-mentioned surface properties, it can achieve a low degree of gloss even if it does not contain a gloss adjuster (matting additive). Since the gloss modifier reduces the oil repellency of the layer formed from the resin material, the surface protective layer containing the gloss modifier is likely to be susceptible to fingerprints.
- the surface protective layer 5 that does not contain a gloss modifier does not easily absorb oil, so fingerprints are not easily attached to it. Furthermore, the surface protective layer 5 having excellent oil repellency is unlikely to cause oil stains or adsorption of contaminants.
- the surface protective layer 5 that does not contain a gloss modifier does not have gloss modifier particles falling off when its surface is scratched, and therefore, the decorative sheet 1 that includes such a surface protective layer 5 has no gloss Not easy to change or scratch.
- the reason why the surface protective layer 5 having the above-mentioned surface properties can be obtained by the above-mentioned method is as follows.
- Oxygen in the gas phase not only absorbs short wavelength ultraviolet rays, but also inhibits radical polymerization.
- the effect of oxygen contained in the gas phase on radical polymerization is greatest in the parts of the coating film made of ionizing radiation-curable resin that are adjacent to the gas phase, and decreases as the distance from the coating film surface increases. . Therefore, in the first irradiation step, by changing the oxygen concentration in the gas phase, the relationship between the distance from the coating surface and the degree of progress of the crosslinking reaction can be changed.
- the thickness of the cured film produced on the surface of the coating film by the first irradiation step and the degree of expansion of the cured film in the in-plane direction according to the progress of the crosslinking reaction will change.
- the cumulative amount of light in the first irradiation step also influences the thickness of the cured film and the degree of expansion of the cured film in the in-plane direction.
- the thickness of the cured film and the degree of expansion of the cured film in the in-plane direction affect the surface properties of the surface protective layer. Furthermore, the thickness of the coating film also influences the formation of wrinkles.
- a desired surface can be obtained.
- a surface protective layer having specific properties can be obtained.
- Example 1 The decorative sheet 1 described with reference to FIGS. 1 to 3 was manufactured by the following method. In addition, in this example, the transparent resin layer 4, primer layer 6, adhesive layer 7, and hiding layer 8 were omitted.
- impregnated paper GFR-506, manufactured by Kojin Co., Ltd.
- a basis weight of 50 g/m 2 was prepared as the raw fabric layer 2.
- a pattern layer 3 was formed on one side of the original fabric layer 2 using an oil-based nitrified cotton resin-based gravure printing ink (PCNT (PCRNT) in various colors: manufactured by Toyo Ink Co., Ltd.).
- PCNT gravure printing ink
- the coating liquid for the surface protective layer used was one in which the following particles were blended with the following ionizing radiation curable resin.
- ⁇ Ionizing radiation curable resin Type Ethylene glycol diacrylate (9 moles of EO added)
- Product name Light acrylate 9EG-A (manufactured by Kyoeisha Chemical Co., Ltd.) Blend: 100 parts by mass/particles
- Particle size 5 ⁇ m
- Blend 0.5 parts by mass
- a coating film made of the surface protective layer coating liquid was formed to have a thickness of 10 ⁇ m.
- a first irradiation step was performed. Specifically, under atmospheric pressure and in a nitrogen gas atmosphere with an oxygen concentration of 500 ppm, a Xe excimer lamp was used to emit an integrated amount of ultraviolet light with a wavelength of 172 nm onto the surface of a coating film made of a coating liquid for a surface protective layer. The irradiation was performed so that the amount of irradiation was 150 mJ/cm 2 . This caused wrinkles on the surface of the coating film.
- the surface protective layer 5 was formed by irradiating the coating film with ionizing radiation and curing the entire coating film.
- the decorative sheet 1 was obtained as described above.
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO-modified triacrylate (6 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO-modified triacrylate (15 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO modified triacrylate (3 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane PO modified triacrylate (addition of 6 moles of PO)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Caprolactone-modified tris-(2-acryloxyethyl) isocyanurate (3 moles of caprolactone (CL) added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 8 ⁇ m.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO-modified triacrylate (6 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 15 ⁇ m.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO-modified triacrylate (6 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (35 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (50 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (addition of 20 moles of EO)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Propoxylated pentaerythritol tetraacrylate (35 moles of PO added)
- the first irradiation step consists of a coating liquid for the surface protective layer under atmospheric pressure and in a nitrogen gas atmosphere with an oxygen concentration of 200 ppm.
- the surface of the coating film was irradiated with ultraviolet rays with a wavelength of 172 nm using a Xe excimer lamp so that the cumulative amount of light was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Caprolactone-modified pentaerythritol tetraacrylate (addition of 20 moles of CL)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 8 ⁇ m.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (35 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 15 ⁇ m.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (35 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- - Ionizing radiation curable resin Type Ethoxylated dipentaerythritol hexaacrylate (12 moles of EO added)
- the first irradiation step starts from the surface protective layer coating liquid under atmospheric pressure and in a nitrogen gas atmosphere with an oxygen concentration of 100 ppm.
- the surface of the coating film was irradiated with ultraviolet rays with a wavelength of 172 nm using a Xe excimer lamp so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (addition of 20 moles of EO)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 200 mJ/cm 2 .
- Decorative sheet 1 was manufactured in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 8 ⁇ m.
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative light amount was 150 mJ/cm 2 .
- the coating liquid for the surface protective layer was a mixture of the following ionizing radiation curable resin and the following particles.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO-modified triacrylate (6 moles of EO added)
- Particle size 5 ⁇ m Blend: 15 parts by mass
- the first irradiation step was not performed, and the coating film made of the surface protective layer coating liquid was cured only by the second irradiation step.
- the coating liquid for the surface protective layer was a mixture of the following ionizing radiation curable resin and the following particles.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (35 moles of EO added)
- Blend 100 parts by mass/particles
- Particle size 5 ⁇ m
- Blend 15 parts by mass
- the first irradiation step was not performed, and the coating film made of the surface protective layer coating liquid was cured only by the second irradiation step.
- Example 3 A decorative sheet was produced in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 5 ⁇ m.
- ⁇ Ionizing radiation curable resin Type Trimethylolpropane EO-modified triacrylate (6 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 50 mJ/cm 2 .
- Example 4 A decorative sheet was produced in the same manner as in Example 1 except for the following points. That is, in this example, the following ionizing radiation curable resin was used. A coating film made of the surface protective layer coating liquid was formed to have a thickness of 5 ⁇ m.
- ⁇ Ionizing radiation curable resin Type Ethoxylated pentaerythritol tetraacrylate (35 moles of EO added)
- a Xe excimer lamp is used to apply ultraviolet light with a wavelength of 172 nm to the surface of the coating film made of the coating liquid for the surface protective layer. was irradiated so that the cumulative amount of light was 50 mJ/cm 2 .
- the skin feel was evaluated by the following method. First, preliminary preparations were made to match the evaluation criteria among the evaluators. Specifically, ten standard test pieces with different surface properties were prepared. Next, each of the 20 evaluators was asked to slide their fingers on the surface of the standard test piece while blindfolded, and then categorized the tactile sensation into the following five groups.
- Group 1 The presence of unevenness was clearly felt, and there was a strong rough texture.
- 2nd group There was a rough texture (roughness between the 1st and 3rd groups).
- Group 3 There was a slight rough texture.
- Group 4 There was no rough texture.
- each of the evaluators was asked to slide their fingers on the surface of the surface protective layer while blindfolded, and then to classify the tactile sensation into the five groups described above. This procedure was repeated until the evaluations by each evaluator matched three or more consecutive times and the evaluation results matched three times in a row between the evaluators. Based on the results, the skin feel was evaluated according to the following criteria.
- AAA 1st group AA: 2nd group A: 3rd group B: 4th group.
- Fingerprint resistance As a fingerprint resistance evaluation, a fingerprint wiping property evaluation was performed. Specifically, first, the 60 degree glossiness of the surface of each decorative sheet was measured, and this 60 degree glossiness was taken as the initial glossiness. Subsequently, a fingerprint resistance evaluation liquid was applied onto the surface protective layer, and the fingerprint resistance evaluation liquid adhering to the surface of the decorative sheet was wiped off. Here, higher fatty acids were used as the fingerprint resistance evaluation liquid. Thereafter, the 60 degree glossiness of the portion where the fingerprint resistance evaluation liquid was wiped off was measured, and this 60 degree glossiness was defined as the glossiness after wiping.
- Fingerprint wiping rate (%) (Glossiness after wiping/Initial glossiness) x 100
- the evaluation criteria were as follows.
- AA 70% or more and less than 250%
- A 50% or more and less than 70%, or 250% or more and less than 300%
- B Less than 50%, or 300% or more.
- the evaluation criteria were as follows. AA: No scratches or changes in gloss occurred on the surface. A: Minor scratches and changes in gloss occurred on the surface. B: Significant scratches and changes in gloss occurred on the surface.
- the decorative sheets according to Examples 1 to 16 gave the evaluators a rough texture. Furthermore, the decorative sheets according to Examples 1 to 16 had low gloss and were excellent in fingerprint resistance and stain resistance. Furthermore, the decorative sheets according to Examples 2 to 16 also had excellent scratch resistance. On the other hand, as shown in Table 3, the decorative sheets according to Comparative Examples 1 and 2 did not give a rough feel to the evaluators and were inferior in fingerprint resistance, stain resistance, and scratch resistance. Furthermore, although the decorative sheets according to Comparative Examples 3 and 4 had low gloss and were excellent in fingerprint resistance, stain resistance, and scratch resistance, they did not give a rough feel to the evaluators.
- SYMBOLS 1 Decorative sheet, 2... Original fabric layer, 3... Pattern layer, 4... Transparent resin layer, 5... Surface protective layer, 6... Primer layer, 7... Adhesive layer, 8... Hiding layer, 11... Decorative material, B... substrate.
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Abstract
Description
図1は、本発明の一実施形態に係る化粧シートを含んだ化粧材の断面図である。図2は、図1の化粧シートが含んでいる表面保護層の断面図である。図3は、本発明の一例に係る化粧シートが含んでいる表面保護層の顕微鏡写真である。
原反層2又はその材料としては、例えば、紙、合成樹脂、合成樹脂の発泡体、ゴム、不織布、合成紙、金属箔等から任意に選定したものが使用可能である。紙としては、薄葉紙、チタン紙、樹脂含浸紙等が例示できる。合成樹脂としては、ポリエチレン、ポリプロピレン、ポリブチレン、ポリスチレン、ポリカーボネート、ポリエステル、ポリアミド、エチレン-酢酸ビニル共重合体、ポリビニルアルコール、アクリル等が例示できる。ゴムとしては、エチレン-プロピレン共重合ゴム、エチレン-プロピレン-ジエン共重合ゴム、スチレン-ブタジエン共重合ゴム、スチレン-イソプレン-スチレンブロック共重合ゴム、スチレン-ブタジエン-スチレンブロック共重合ゴム、ポリウレタン等が例示できる。不織布としては、有機系や無機系の不織布が使用できる。金属箔の金属としては、アルミニウム、鉄、金、銀等が例示できる。
原反層2の材料としてオレフィン系の樹脂を用いる場合には、原反層2の表面が不活性な状態であることが多い。従って、この場合、原反層2と基材Bとの間に、プライマ層6を設けることが好ましい。原反層2がオレフィン系材料からなる場合、プライマ層6を省略するとともに、原反層2と基材Bとの接着性を向上させるために、原反層2に対して、例えば、コロナ処理、プラズマ処理、オゾン処理、電子線処理、紫外線処理、重クロム酸処理等の表面改質処理を施してもよい。
基材Bに対する隠蔽性を化粧シート1に付与するには、例えば、原反層2として着色シートを用いるか、又は、不透明な隠蔽層8を設ける。隠蔽層8は、例えば、絵柄層3について後述するものと同じ材料から構成することができる。但し、隠蔽層8は、隠蔽性を目的としているので、顔料としては、例えば、不透明な顔料、酸化チタン、酸化鉄等を使用することが好ましい。また、隠蔽性を高めるために、隠蔽層8の材料には、例えば、金、銀、銅、アルミニウム等の金属を添加することも可能である。一般的には、フレーク状のアルミニウム片を添加させることが多い。
絵柄層3は、原反層2に対して、インキを用いて絵柄を印刷してなる層である。インキのバインダとしては、例えば、硝化綿、セルロース、塩化ビニル-酢酸ビニル共重合体、ポリビニルブチラール、ポリウレタン、アクリル、ポリエステル類、又は、それらの変性物を、単独で又は複数を組み合わせて用いることができる。バインダは、水性、溶剤系、エマルジョンタイプの何れでもよく、1液タイプでも硬化剤を使用した2液タイプでもよい。絵柄層3は、硬化性のインキで形成した層を、紫外線や電子線等の照射により硬化させる方法により形成してもよい。中でも最も一般的な方法は、ウレタン系のインキを用いるもので、イソシアネートによって硬化させる方法である。絵柄層3を形成するために使用するインキは、バインダ以外には、例えば、通常のインキに含まれている顔料、染料等の着色剤、体質顔料、溶剤、各種添加剤などを更に含むことができる。汎用性の高い顔料としては、例えば、縮合アゾ、不溶性アゾ、キナクリドン、イソインドリン、アンスラキノン、イミダゾロン、コバルト、フタロシアニン、カーボン、酸化チタン、酸化鉄、雲母等のパール顔料等が挙げられる。
接着層7は、感熱接着層、アンカーコート層、ドライラミ接着剤層とも呼ばれる層である。
透明樹脂層4の樹脂材料としては、オレフィン系樹脂が好適に用いられる。オレフィン系樹脂としては、例えば、ポリプロピレン、ポリエチレン、ポリブテンなどの他に、αオレフィン(例えば、プロピレン、1-ブテン、1-ペンテン、1-ヘキセン、1-ヘプテン、1-オクテン、1-ノネン、1-デセン、1-ウンデセン、1-ドデセン、トリデセン、1-テトラデセン、1-ペンタデセン、1-ヘキサデセン、1-ヘプタデセン、1-オクタデセン、1-ノナデセン、1-エイコセン、3-メチル-1-ブテン、3-メチル-1-ペンテン、3-エチル-1-ペンテン、4-メチル-1-ペンテン、4-メチル-1-ヘキセン、4,4-ジメチル-1-ペンテン、4-エチル-1-ヘキセン、3-エチル-1-ヘキセン、9-メチル-1-デセン、11-メチル-1-ドデセン、12-エチル-1-テトラデセンなど)を単独重合させたもの又はそれらの二種類以上を共重合させたものや、エチレン-酢酸ビニル共重合体、エチレン-ビニルアルコール共重合体、エチレン-メチルメタクリレート共重合体、エチレン-エチルメタクリレート共重合体、エチレン-ブチルメタクリレート共重合体、エチレン-メチルアクリレート共重合体、エチレン-エチルアクリレート共重合体、エチレン-ブチルアクリレート共重合体などのように、エチレン又はαオレフィンとそれ以外のモノマーとを共重合させたものが挙げられる。
表面保護層5は、コア部5Aと、各々がコア部5Aの一方の面から畝状に突出した複数の畝状部5Bとを含んでいる。これら畝状部5Bは、凹凸形構造を形成している。
化粧シート1は、例えば、以下の方法により製造する。ここでは、簡略化のため、絵柄層3、透明樹脂層4、プライマ層6、接着層7、及び隠蔽層8に関する説明は省略する。
図1乃至図3を参照しながら説明した化粧シート1は、表面保護層5が上述した表面性状を有している。このような化粧シート1は、ユーザが表面保護層5の表面上で肌を滑らせたときに、例えば、表面保護層5の表面上で指を滑らせたときに、ユーザへざらざらした触感を与える。即ち、この化粧シート1は、大きな凹凸の存在をユーザに感じさせることを可能とする。
<例1>
図1乃至図3を参照しながら説明した化粧シート1を、以下の方法により製造した。なお、本例では、透明樹脂層4、プライマ層6、接着層7及び隠蔽層8は省略した。
・電離放射線硬化性樹脂
種類:エチレングリコールジアクリレート(EO9モル付加)
品名:ライトアクリレート9EG-A(共栄社化学社製)
配合:100質量部
・粒子
品名:サイリシア250N(富士シリシア化学社製)
粒径:5μm
配合:0.5質量部
表面保護層用塗液からなる塗膜は、厚さが10μmとなるように形成した。
以上のようにして、化粧シート1を得た。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO6モル付加)
品名:Miramer M3160(Miwon社製)
そして、第1照射工程は、大気圧下、酸素濃度が500ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO15モル付加)
品名:SR9035(Sartomer社製)
そして、第1照射工程は、大気圧下、酸素濃度が500ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO3モル付加)
品名:Miramer M3130(Miwon社製)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンPO変性トリアクリレート(PO6モル付加)
品名:NKエステルA-TMPT-6PO(新中村化学社製)
そして、第1照射工程は、大気圧下、酸素濃度が500ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:カプロラクトン変性トリス-(2-アクリロキシエチル)イソシアヌレート(カプロラクトン(CL)3モル付加)
品名:NKエステルA-9300-3CL(新中村化学社製)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが8μmとなるように形成した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO6モル付加)
品名:Miramer M3160(Miwon社製)
そして、第1照射工程は、大気圧下、酸素濃度が500ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが15μmとなるように形成した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO6モル付加)
品名:Miramer M3160(Miwon社製)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO35モル付加)
品名:NKエステル ATM-35E(新中村化学工業社製)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO50モル付加)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO20モル付加)
そして、第1照射工程は、大気圧下、酸素濃度が100ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:プロポキシ化ペンタエリスリトールテトラアクリレート(PO35モル付加) そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:カプロラクトン変性ペンタエリスリトールテトラアクリレート(CL20モル付加)
そして、第1照射工程は、大気圧下、酸素濃度が100ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが8μmとなるように形成した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO35モル付加)
品名:NKエステル ATM-35E(新中村化学工業社製)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが15μmとなるように形成した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO35モル付加)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:エトキシ化ジペンタエリスリトールヘキサアクリレート(EO12モル付加) そして、第1照射工程は、大気圧下、酸素濃度が100ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO20モル付加)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が200mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シート1を製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが8μmとなるように形成した。
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO20モル付加)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が150mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シートを製造した。即ち、本例では、表面保護層用塗液としては、下記の電離放射線硬化性樹脂に、下記の粒子を配合してなるものを使用した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO6モル付加)
品名:Miramer M3160(Miwon社製)
配合:100質量部
・粒子
品名:サイリシア250N(富士シリシア化学社製)
粒径:5μm
配合:15質量部
そして、第1照射工程は行わず、表面保護層用塗液からなる塗膜は、第2照射工程のみによって硬化させた。
以下の点を除き、例1と同様の方法により化粧シートを製造した。即ち、本例では、表面保護層用塗液としては、下記の電離放射線硬化性樹脂に、下記の粒子を配合してなるものを使用した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO35モル付加)
品名:NKエステル ATM-35E(新中村化学工業社製)
配合:100質量部
・粒子
品名:サイリシア250N(富士シリシア化学社製)
粒径:5μm
配合:15質量部
そして、第1照射工程は行わず、表面保護層用塗液からなる塗膜は、第2照射工程のみによって硬化させた。
以下の点を除き、例1と同様の方法により化粧シートを製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが5μmとなるように形成した。
・電離放射線硬化性樹脂
種類:トリメチロールプロパンEO変性トリアクリレート(EO6モル付加)
品名:Miramer M3160(Miwon社製)
そして、第1照射工程は、大気圧下、酸素濃度が500ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が50mJ/cm2となるように照射した。
以下の点を除き、例1と同様の方法により化粧シートを製造した。即ち、本例では、下記の電離放射線硬化性樹脂を使用した。表面保護層用塗液からなる塗膜は、厚さが5μmとなるように形成した。
・電離放射線硬化性樹脂
種類:エトキシ化ペンタエリスリトールテトラアクリレート(EO35モル付加)
品名:NKエステル ATM-35E(新中村化学工業社製)
そして、第1照射工程は、大気圧下、酸素濃度が200ppmの窒素ガス雰囲気中で、表面保護層用塗液からなる塗膜の表面に対して、Xeエキシマランプを用いて、波長172nmの紫外線を積算光量が50mJ/cm2となるように照射した。
上記の化粧シートの各々に対し、以下に記載する評価を行った。
光沢度は、Rhopoint IQ(コニカミノルタ社製)を用いて、60度光沢度を測定した。以下の表1乃至表3における「60度光沢値」は、この60度光沢度を表している。
肌感触(ざらざら触感)は、以下の方法により評価した。
先ず、評価者間で評価基準を一致させるための事前準備を行った。具体的には、表面性状が異なる10個の標準試験片を準備した。次に、20名の評価者の各々に、目隠しした状態で標準試験片の表面上で指を滑らせてもらい、その後、触感を以下の5つの群に分類してもらった。
第2群:ざらざら触感(第1群と第3群の中間のざらざら触感)があった。
第3群:わずかなざらざら触感があった。
第4群:ざらざら触感はなかった。
AAA:第1群
AA :第2群
A :第3群
B :第4群。
耐指紋性評価として、指紋のふき取り性評価を実施した。
具体的には、先ず、各化粧シートの表面の60度光沢度を測定して、この60度光沢度を初期光沢度とした。続いて、表面保護層上に耐指紋評価液を付着させ、化粧シート表面に付着した耐指紋評価液を拭き取った。ここでは、耐指紋評価液として、高級脂肪酸を用いた。その後、耐指紋評価液を拭き取った部分の60度光沢度を測定して、この60度光沢度を拭き取り後光沢度とした。
指紋拭き取り率(%)=(拭き取り後光沢度/初期光沢度)×100
評価基準は、下記の通りとした。
A :50%以上70%未満、又は、250%以上300%未満
B :50%未満、又は、300%以上。
耐汚染性評価として、日本農林規格(JAS:Japanese Agricultural Standards)に規定された汚染A試験を行った。即ち、各化粧シートの表面保護層に、青色インキ、黒色速乾性インキ及び赤色クレヨンで各々の幅が10mmの線を引き、4時間放置した。その後、エタノールを含ませた布で、青色インキ、黒色速乾性インキ及び赤色クレヨンの線を拭き取った。
AA:各色の線を容易に拭き取ることができた。
A :各色の線の一部を拭き取ることができたが、一部に汚れが残った。
B :各色の線を拭き取ることができなかった。
ウレタン系の接着剤を用いて、各化粧シートを木質基板Bに貼り付けた。その後、耐傷性評価として、スチールウールラビング試験を実施した。具体的には、100gの荷重をかけながらスチールウールで化粧シートを20往復擦り、化粧シートの表面に生じた傷や光沢の変化を目視にて確認した。
AA:表面に傷や光沢の変化が発生しなかった。
A :表面に軽微な傷や光沢の変化が発生した。
B :表面に著しい傷や光沢の変化が発生した。
Claims (10)
- 原反層と、前記原反層の一方の表面に設けられた表面保護層とを備え、
前記表面保護層の表面に、各々が畝状に突出した複数の畝状部を含んだ凹凸構造が設けられており、
前記表面保護層の前記凹凸構造は、突出山部高さRpkが3.5μm以上である化粧シート。 - 前記突出山部高さRpkは25μm以下である請求項1に記載の化粧シート。
- 前記表面保護層の前記凹凸構造は、粗さ曲線要素の平均長さRSmが150μm以上である請求項1又は2に記載の化粧シート。
- 前記平均長さRSmは1000μm以下である請求項3に記載の化粧シート。
- 前記表面保護層の厚さは8μm以上である請求項1乃至4の何れか1項に記載の化粧シート。
- 前記表面保護層の光沢度は10.0以下である請求項1乃至5の何れか1項に記載の化粧シート。
- 前記複数の畝状部の少なくとも一部は幅方向へ隣り合い、前記複数の畝状部の前記少なくとも一部が前記幅方向へ隣り合った位置で、前記幅方向及び前記表面保護層の厚さ方向に平行な断面は、前記凹凸構造が設けられた部分が正弦波形状を有している請求項1乃至6の何れか1項に記載の化粧シート。
- 前記表面保護層は、電離放射線硬化性樹脂の硬化物を含んだ請求項1乃至7の何れか1項に記載の化粧シート。
- 前記電離放射線硬化性樹脂は、主成分が繰り返し構造を含むアクリレートであり、
前記繰り返し構造は、エチレンオキサイド、プロピレンオキサイド、及びε-カプロラクトンの何れかであり、
前記繰り返し構造の繰り返し回数は3以上である請求項8に記載の化粧シート。 - 請求項1乃至9の何れか1項に記載の化粧シートと、
前記化粧シートが貼り付けられた基材と
を備えた化粧材。
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| EP23827264.5A EP4545295A4 (en) | 2022-06-24 | 2023-06-22 | DECORATIVE LEAF |
| KR1020247040736A KR20250029039A (ko) | 2022-06-24 | 2023-06-22 | 화장 시트 |
| JP2024529074A JPWO2023249082A1 (ja) | 2022-06-24 | 2023-06-22 | |
| CN202380044937.6A CN119325424A (zh) | 2022-06-24 | 2023-06-22 | 装饰片 |
| US18/984,392 US20250115039A1 (en) | 2022-06-24 | 2024-12-17 | Decorative sheet |
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| US18/984,392 Continuation US20250115039A1 (en) | 2022-06-24 | 2024-12-17 | Decorative sheet |
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| US (1) | US20250115039A1 (ja) |
| EP (1) | EP4545295A4 (ja) |
| JP (1) | JPWO2023249082A1 (ja) |
| KR (1) | KR20250029039A (ja) |
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| WO2024157859A1 (ja) * | 2023-01-25 | 2024-08-02 | Toppanホールディングス株式会社 | 化粧シート |
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| Publication number | Publication date |
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| EP4545295A1 (en) | 2025-04-30 |
| CN119325424A (zh) | 2025-01-17 |
| EP4545295A4 (en) | 2025-10-22 |
| JPWO2023249082A1 (ja) | 2023-12-28 |
| US20250115039A1 (en) | 2025-04-10 |
| KR20250029039A (ko) | 2025-03-04 |
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