JP7153254B1 - Decorative sheets and materials - Google Patents

Abstract

An object of the present invention is to provide a decorative sheet having excellent tactile sensation. The method includes a substrate (30), a surface protective layer (60) overlaid on the substrate, and a raised portion (55) located between the substrate and the surface protective layer, the raised portion being a first region of the surface protective layer. 61, includes a first binder resin 56 and first particles 57 having an average particle size of 10 μm or more. The surface protective layer includes a second binder resin 66 and second particles 67 having an average particle size of 10 μm or more and 20 μm or less. The average thickness of the raised portion is 20 μm or more, and the average thickness of the surface protective layer is 3 μm or more and 15 μm or less. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present disclosure relates to decorative sheets and decorative materials.

Decorative sheets are attached to various members for the purpose of decoration. As various members, the surface of the wall of the building; the surface of the indoor space such as the floor and the ceiling; Surfaces of outdoor structures such as fences and fences; Surfaces of indoor or outdoor parts of fittings such as window frames, door frames, doors and partitions; Surfaces of furniture such as chests of drawers and closets; inner or outer surfaces of vehicles; surfaces of various household appliances, office equipment, and the like.

A decorative sheet basically has a substrate, a design layer, and a surface protective layer in this order. This decorative sheet lacks tactile sensation. This decorative sheet cannot reproduce the feel of natural wood such as veneer. In recent years, improvements in the tactile sensation obtained from decorative sheets have been proposed (for example, Patent Documents 1 and 2).

JP 2019-217740 A International publication number WO2020/196377

The decorative sheet described in Patent Document 1 has an uneven surface formed by embossing. The uneven surface provides a tactile sensation. However, the tactile sensation obtained by the uneven shape cannot sufficiently reproduce the tactile sensation of natural objects such as wood grain.

The decorative sheet disclosed in Patent Document 2 has a base material, a design layer, a raised portion and a surface protective layer in this order. The decorative sheet has convex portions corresponding to the raised portions on its surface. The decorative sheet of Patent Literature 2 can impart a predetermined tactile sensation due to the convex portions corresponding to the raised portions. However, in the decorative sheet of Patent Document 2, sufficient tactile sensation is obtained only from the convex portions. As a result, the tactile sensation of natural objects such as wood grain cannot be sufficiently reproduced.

An object of the present disclosure is to provide a decorative sheet with excellent tactile sensation.

The first decorative sheet according to an embodiment of the present disclosure is
a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion positioned between the base material and the first region of the surface protective layer;
The maximum height Rz defined in JIS B0601:2013 is 25 μm or more in the first region of the surface protective layer, and 18 μm or more in the second region of the surface protective layer,
The skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the first region of the surface protective layer and greater than 0 in the second region of the surface protective layer,
Kurtosis Sku defined in ISO25178-2:2012 is 10.0 or more in the first region of the surface protective layer and 4.0 or more in the second region of the surface protective layer.

The second decorative sheet according to an embodiment of the present disclosure is
a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion positioned between the base material and the first region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The average thickness of the bulging portion is larger than the average particle diameter of the second particles.

A third decorative sheet according to an embodiment of the present disclosure is
a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion positioned between the base material and the first region of the surface protective layer;
The raised portion includes a first binder resin and first particles having an average particle diameter of 10 μm or more,
The surface protective layer contains a second binder resin and second particles having an average particle size of 10 μm or more and 20 μm or less,
The average thickness of the raised portion is 20 μm or more,
The average thickness of the surface protective layer is 3 μm or more and 15 μm or less.

A decorative material according to an embodiment of the present disclosure is
Any one of the first to third decorative sheets according to an embodiment of the present disclosure,
and a support member that supports the decorative sheet.

According to the present disclosure, it is possible to provide a decorative sheet with excellent tactile sensation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining an embodiment of the present disclosure, and is a schematic cross-sectional view showing an example of a decorative material and a decorative sheet; FIG. 2 is a view corresponding to FIG. 1 and a schematic cross-sectional view showing another example of the decorative material and the decorative sheet; FIG. 3 is a plan view showing the decorative material and decorative sheet of FIG. 1 or 2;

An embodiment of the present disclosure will be described below with reference to the drawings. In the drawings attached to this specification, for convenience of illustration and ease of understanding, the scale, length-to-width ratio, etc. are appropriately changed and exaggerated from those of the real thing.

In order to clarify the directional relationship between the drawings, some drawings show the common first direction D1, the second direction D2 and the third direction D3 by the arrows with the common reference numerals. The tip side of the arrow is the first side in each direction. As shown in FIGS. 1 and 2, the arrow pointing inward in the drawing along the direction perpendicular to the drawing is indicated by a circle with an X in it. An arrow pointing forward from the plane of the drawing along a direction perpendicular to the plane of the drawing is indicated by a dot in a circle, as shown in FIG. In the illustrated example, the third direction D3 is the normal direction of the decorative sheet 20 . The third direction is the lamination direction in which the components constituting the decorative sheet 20 are laminated. The illustrated flat decorative sheet 20 extends in a first direction D and a second direction D2. The first direction D and the second direction D2 are orthogonal to the third direction D3. The first direction D and the second direction D2 are orthogonal to each other.

[Decorative sheet and decorative material]
The decorative sheet 20 includes a substrate 30, a surface protective layer 60 including a first region 61 and a second region 62 located on the substrate 30, and between the substrate 30 and the first region 61 of the surface protective layer 60. and a raised portion 55 located at the . The base material 30, the raised portion 55 and the surface protective layer 60 are stacked in the third direction. The raised portion 55 faces only the first region 61 . The raised portion 55 does not face the second region 62 . The second region 62 is shifted from the first region 61 in at least one of the first direction D1 and the second direction D2. The surface protective layer 60 constitutes the surface 20A of the decorative sheet 20. As shown in FIG.

As the decorative sheet 20 of the first mode, the maximum height Rz, the skewness Ssk and the kurtosis Sku on the surface 20A of the decorative sheet 20 constituted by the surface protective layer 60 may be adjusted as follows. The maximum height Rz is defined in JIS B0601:2013. Skewness Ssk and kurtosis Sku are defined in ISO25178-2:2012.
・Maximum height RzA in the first region 61: 25 μm or more ・Maximum height RzB in the second region 62: 18 μm or more ・Skewness SskA in the first region 61: greater than 0 ・Skewness SskB in the second region 62 : greater than 0 ・Kurtosis SkuA in the first region 61: 10.0 or more ・Kurtosis SkuB in the second region 62: 4.0 or more

By adjusting the maximum height Rz, the skewness Ssk, and the kurtosis Sku on the surface 20A as described above, the decorative sheet 20 has high, fine, and sharp peaks or protrusions in the first region 61 on the raised portion 55. It has an uneven surface containing parts. The decorative sheet 20 has an uneven surface including high, fine and sharp ridges or protrusions even in the second region 62 on the region where the raised portion 55 is not formed. Therefore, a strong tactile sensation is imparted from the entire area of the decorative sheet 20 . Additionally, the first region 61 has a greater maximum height Rz and a greater kurtosis Sku compared to the second region 62 . Therefore, the first region 61 includes higher and sharper peaks or protrusions compared to the second region 62 . That is, the tactile sensation obtained from the first region 61 is different from the tactile sensation obtained from the second region 62 . A stronger tactile sensation is obtained from the first region 61 than from the second region 62 . In addition, it is perceived that the first region 61 is raised overall more than the second region 62 due to the raised portion 55 . Along with this, the difference between the tactile sensation obtained from the first area 61 and the tactile sensation obtained from the second area 62 is perceived more clearly. By combining the first region 61 and the second region 62, it is possible to provide a user who touches the decorative sheet 20 with a complex and strong tactile sensation. That is, various tactile sensations can be emphasized and imparted. The decorative sheet 20 can impart a tactile sensation that highly accurately reproduces the tactile sensation of a natural object through rich tactile expression. By weakening the artificial impression of the decorative sheet 20, the decorative sheet 20 can have a natural texture.

As the decorative sheet 20 of the second aspect, the raised portion 55 and the surface protective layer 60 may be configured as follows. The surface protective layer 60 may contain a second binder resin 66 and second particles 67 . A second average thickness TB (μm), which is the average thickness of the surface protective layer 60 , may be smaller than a second average particle diameter DB (μm), which is the average particle diameter of the second particles 67 . The first average thickness TA, which is the average thickness of the raised portion 55, may be larger than the second average particle diameter DB (μm).

In the above configuration, the second average thickness TB of the surface protective layer 60 is smaller than the second average particle diameter DB of the second particles 67 . Therefore, the second particles 67 can protrude from the second binder resin 66 in the surface protective layer 60 . As a result, the entire area of the surface 20A of the decorative sheet 20 formed by the surface protective layer 60 can provide a strong tactile sensation to the user who touches the decorative sheet 20 . The first average thickness TA of the raised portion 55 is larger than the second average particle diameter DB of the second particles 67 . Therefore, it is perceived that the first area 61 is raised as a whole compared to the second area 62 . By combining the first area and the second area, it is possible to impart a complex and strong tactile sensation to the user who touches the decorative sheet 20 . That is, various tactile sensations can be emphasized and imparted. The decorative sheet 20 can impart a tactile sensation that highly accurately reproduces the tactile sensation of a natural object through rich tactile expression. By weakening the artificial impression of the decorative sheet 20, the decorative sheet 20 can have a natural texture.

In the decorative sheet 20 of the second aspect, the raised portion 55 may contain the first binder resin 56 and the first particles 57 . The first average particle diameter DA, which is the average particle diameter of the first particles 57, may be 0.7 to 1.3 times the first average thickness TA of the raised portion 55. As shown in FIG.

Since the raised portion 55 contains the first binder resin 56 and the first particles 57, the raised portion 55 has an uneven surface. In the first region 61, the surface protective layer 60 is positioned on the raised portion 55, which is the uneven surface. Therefore, the surface protective layer 60 can have a stronger uneven surface in the first region 61 than in the second region 62 . In particular, by setting the first average particle diameter DA, which is the average particle diameter of the first particles 57, to 0.7 times or more and 1.3 times or less of the first average thickness TA, which is the average thickness of the raised portion 55, the Region 1 61 will include moderately higher and moderately sharper peaks or protrusions compared to region 2 62 . The first region 61 may have a greater maximum height Rz and a greater kurtosis Sku compared to the second region 62 . A stronger tactile sensation is imparted to the first region 61 than to the second region 62 . Furthermore, the first region 61 is raised compared to the second region 62 . As a result, the difference between the tactile sensation obtained from the first area 61 and the tactile sensation obtained from the second area 62 is perceived more clearly. By combining the first region 61 and the second region 62, a complex and strong tactile sensation can be imparted to the user who touches the decorative sheet 20. FIG. That is, various tactile sensations can be emphasized and imparted. The decorative sheet 20 can impart a tactile sensation that highly accurately reproduces the tactile sensation of a natural object through rich tactile expression. By weakening the artificial impression of the decorative sheet 20, the decorative sheet 20 can have a natural texture.

In the decorative sheet 20 of the second aspect, the maximum height Rz of the surface protective layer 60 specified in JIS B0601:2013 may be 18 μm or more. A strong tactile sensation can be obtained not only from the first region 61 but also from the second region. A strong tactile sensation can be obtained from the entire area of the surface 20A of the decorative sheet 20 .

In the second aspect of the decorative sheet 20 , the maximum height Rz of the surface protective layer 60 defined in JIS B0601:2013 may be larger in the first region 61 than in the second region 62 . A stronger tactile sensation is imparted to the first region 61 than to the second region 62 . Furthermore, the first region 61 is raised compared to the second region 62 . As a result, the difference between the tactile sensation obtained from the first area 61 and the tactile sensation obtained from the second area 62 is perceived more clearly.

As shown in FIGS. 1 and 2, the decorative material 100 may include a support material 15 and a decorative sheet 20. FIG. The support material 15 is an adherend of the decorative sheet 20 . The support material 15 is given a design using the decorative sheet 20 . As the support material 15, board materials such as wood veneer, wood plywood, particle board, MDF (medium density fiber board), wood fiber board such as laminated wood, etc., and three-dimensional articles made of various types of wood such as cedar, cypress, pine, lauan, etc. Wooden members used as such; Plates and steel plates such as iron and aluminum, three-dimensional articles, or metal members used as sheets; Glass, ceramics such as ceramics, non-cement ceramic materials such as gypsum, ALC (lightweight cellular concrete ) Plate materials such as non-ceramic ceramic materials such as plates and ceramic members used as three-dimensional articles; acrylic resins, polyester resins, polystyrene, polyolefin resins such as polypropylene, ABS (acrylonitrile-butadiene-styrene copolymer) resin Phenolic resins, vinyl chloride resins, cellulose resins, plate materials such as rubber, three-dimensional articles, resin members used as sheets, and the like are exemplified.

The decorative sheet 20 may contain layers other than the base material 30 and the surface protective layer 60 . The decorative sheet 20 may include a design layer 40 . The design layer 40 may be positioned between the base material 30 and the surface protective layer 60 in the third direction D3. The design layer 40 may be positioned between the base material 30 and the raised portion 55 in the third direction D3. In the decorative sheet 20 shown in FIG. 3, the design layer 40 has a wooden surface pattern. This decorative sheet 20 may express the surface of wood. The tree represented by the decorative sheet 20 is not particularly limited. The tree represented by the decorative sheet 20 may be cedar, cypress, walnut, pine, cherry, or the like. The decorative sheet 20 may express the bark of a tree. As shown in FIG. 3, the decorative sheet 20 may represent a cross section of a tree.

As shown in FIG. 1, decorative sheet 20 may include primer layer 45 . The primer layer 45 may be positioned between the raised portion 55 and the surface protective layer 60 and the base material 30 in the third direction D3. The primer layer 45 may be positioned between the raised portion 55 and the surface protective layer 60 and the design layer 40 in the third direction D3. The primer layer 45 may improve adhesion between the raised portion 55 and the surface protective layer 60 and the design layer 40 and the substrate 30 .

Each component of the decorative sheet 20 will be described in further detail below.

<Base material>
The substrate may be in the form of a flat plate such as a film, sheet or plate. Films, sheets and plates are often called films, sheets and plates in descending order of thickness. In this specification, unless otherwise specified, no distinction is made between these three.

Examples of materials for the base material include resins, metals, non-metallic inorganic materials, fibrous materials, wood-based materials, and the like. The material for the base material can be appropriately selected depending on the application.

The substrate may be a single layer. The base material may include a laminate of two or more layers made of the above materials. When the base material is a laminate of two or more layers, two or more layers of different materials may be laminated to complement each other's properties of the material of each layer. The following A to J are exemplified as examples of the substrate formed by laminating two or more layers.
(A) Lamination of resin and wood material (B) Lamination of resin and metal (C) Lamination of resin and fibrous material (D) Lamination of resin and non-metallic inorganic material (E) Resin 1 and resin Lamination with 2 (F) Lamination of metal and wood material (G) Lamination of metal and non-metallic inorganic material (H) Lamination of metal and fibrous material (I) Lamination of metal 1 and metal 2 ( J) Lamination of non-metallic inorganic material and fibrous material

In E above, the resin 1 and the resin 2 may be different resins. For example, the resin 1 may be an olefin resin and the resin 2 may be an acrylic resin. In H above, metal 1 and metal 2 may be different metals. For example, metal 1 may be copper and metal 2 may be chromium.

When the substrate is a laminate such as A to J above, it may have a layer (adhesive layer, etc.) for enhancing adhesive strength between the constituent layers of the laminate.

Various synthetic resins and natural resins are exemplified as resins used for the base material. Examples of synthetic resins include cured products of thermoplastic resins and curable resin compositions.

Thermoplastic resins include polyethylene, polypropylene, polymethylpentene, ionomer, olefin resins such as various olefin thermoplastic elastomers, vinyl chloride resins such as polyvinyl chloride, polyvinylidene chloride, vinyl chloride-vinyl acetate copolymer, and polyethylene terephthalate. , polybutylene terephthalate, polyethylene naphthalate, ethylene glycol-terephthalic acid-isophthalic acid copolymer, polyester resins such as polyester thermoplastic elastomers, polymethyl (meth)acrylate, polyethyl (meth)acrylate, poly (meth) ) Acrylic resins such as butyl acrylate, methyl (meth)acrylate-butyl (meth)acrylate copolymer, polyamide resins such as nylon 6 or nylon 66, cellulose triacetate, cellophane, celluloid, etc. Resins, styrene resins such as polystyrene, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer (ABS), polyvinyl alcohol, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polycarbonate resin, polyarylate Examples include resins and polyimide resins. As the curable resin composition, a thermosetting resin composition and an ionizing radiation curable resin composition exemplified for the raised portion 55 to be described later are exemplified. Examples of natural resins include natural rubber, rosin, and amber.

Examples of metals used for the base material include aluminum or alloys containing aluminum such as duralumin, alloys containing iron such as iron or carbon steel, stainless steel, copper or brass, alloys containing copper such as bronze, gold, silver, Chromium, nickel, cobalt, tin, titanium and the like are exemplified. The metal substrate may include a plating layer plated with these metals.

Non-metallic inorganic materials used for the base material include non-ceramic ceramic materials such as cement, ALC (light cellular concrete), gypsum, calcium silicate, wood chip cement, and ceramic ceramic materials such as ceramics, earthenware, glass, and enamel. , limestone, marble, granite, andesite, and other natural stones.

Fibrous materials used as base materials include thin paper, kraft paper, fine paper, Japanese paper, titanium paper, linter paper, parchment paper, paraffin paper, parchment paper, glassine paper, backing paper for wallpaper, paperboard and base paper for gypsum board. paper; woven fabrics or non-woven fabrics made of fibers such as silk, cotton, hemp, polyester resin fibers, acrylic resin fibers, glass fibers, carbon fibers; The paper may further contain a resin such as an acrylic resin, a styrene-butadiene rubber, a melamine resin, or a urethane resin in order to increase the interfiber strength of the paper base material or prevent the paper base material from fluffing. . Examples of resin-added paper include inter-paper reinforced paper and resin-impregnated paper. Examples of the base material obtained by laminating a resin layer on a fibrous material layer include a wallpaper raw fabric obtained by laminating a resin layer such as a vinyl chloride resin layer, an olefin resin layer, an acrylic resin layer, etc. on the surface of a backing paper for wallpaper. .

The base material may contain additives as needed. When the base material is a resin, additives include inorganic fillers such as calcium carbonate and clay, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, ultraviolet absorbers, and light stabilizers. exemplified. The content of the additive is not particularly limited as long as it does not impair the processing properties, etc., and can be appropriately set according to the required properties.

The shape and dimensions of the substrate are not particularly limited. The shape and dimensions of the substrate can be appropriately selected depending on the application, desired properties and processability. When the base material is flat such as a film, sheet or plate, the thickness of the base material is not particularly limited. The thickness of the base material may generally be about 10 μm or more and 10 cm or less from the viewpoints of manufacturing suitability, mechanical strength, ease of use and economy. The thickness of the substrate may be 20 μm or more and 300 μm or less. The thickness of the substrate may be 1 mm or more and 2 cm or less.

In order to improve adhesion with other layers that make up the decorative material, one or both sides of the base material are subjected to physical surface treatments such as an oxidation method and roughening method, or surface treatments such as chemical surface treatments. may be applied. Examples of the oxidation method include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone-ultraviolet treatment, and the like. A sandblasting method, a solvent treatment method, and the like are exemplified as the roughening method. These surface treatments are appropriately selected according to the type of substrate. The corona discharge treatment method is excellent in surface treatment effect and operability.

<Mounded part and raised layer>
Decorative sheet 20 includes raised layer 50 between substrate 30 and surface protective layer 60 . The raised layer 50 includes the raised portion 55 described above. The raised layer 50 may include a plurality of raised portions 55 spaced apart from each other. As shown in FIG. 1 , the raised layer 50 is arranged on a partial region on the base material 30 . The raised portion 55 is located in a region facing the first region 61 of the surface protective layer 60 . The raised portion 55 is not located in a region facing the second region 62 of the surface protective layer 60 .

When the raised portion 55 is provided on the entire area of the base material, the same tactile sensation is imparted from the entire area of the decorative sheet 20 . Therefore, the tactile sensation of natural objects cannot be sufficiently reproduced. By arranging the raised portion 55 only on a partial region on the base material 30, the tactile sensation obtained from the first region 61 of the surface protective layer 60 that is on the raised portion 55 and the region where the raised portion 55 is not provided. Due to the difference from the tactile sensation obtained from the second region 62 of the surface protective layer 60 on the top, the tactile sensation obtained from natural materials can be reproduced, and the decorative sheet 20 can have a natural texture.

In addition, since the raised portion 55 is positioned on a portion of the base material 30, the first region 61 of the surface protective layer 60 protruding from the second region 62 can be perceived both visually and tactilely. From this point as well, the decorative sheet 20 can have a natural texture.

The area ratio of the region where the raised portion 55 is located to the total area of the substrate may be 5% or more and 90% or less, 10% or more and 80% or less, or 15% or more and 70% or less. According to such an area ratio of the raised portion 55, the difference between the tactile sensation obtained from the first region 61 and the tactile sensation obtained from the second region 62 can be emphasized.

The area ratio of the region provided with the raised portion can be measured as follows. First, three test pieces of 30 cm x 30 cm are cut out from an arbitrary portion of a decorative sheet of 1 m x 1 m. Next, image analysis is performed on each of the test pieces, and the area ratio of the region where the raised portion is provided is calculated. The area fraction is specified as the average of the area fraction measurements on the three specimens. When the size of the decorative sheet is not 1 m × 1 m, the test is performed so that the test piece has the same area ratio as the area ratio of the test piece to the decorative sheet when the size of the test piece is 30 cm × 30 cm with respect to the size of 1 m × 1 m. Determine the size of the pieces.

The shape of the raised portion 55 is not particularly limited. For example, the raised portion 55 may include a dot-like projection group in plan view, in which small projections are aggregated. The raised portion 55 may include an elliptical portion in a plan view that is larger than the protrusion. For the elliptical portion larger than the protrusion, when the resin composition for forming the raised portion is printed to form the raised portion 55, the resin composition may be printed in the elliptical region from the beginning. A large number of small projections may be printed and connected by leveling the resin composition, resulting in an elliptical portion larger than the projections.

The raised portion 55 including the group of protrusions can provide a more delicate touch. The raised portion 55 including the group of protrusions can exhibit excellent design. The raised portion 55 formed by leveling and connecting the group of protrusions tends to have an elliptical shape or an irregular shape in plan view. The raised portion 55 produced by connecting the group of projections by leveling can more faithfully reproduce the texture of a natural object such as a wood grain pattern, and has a high degree of design.

For example, as shown in FIG. 3 , when the decorative sheet 20 reproduces the design appearance of a natural wood board, more specifically, a “wood grain pattern”, the ridges 55 create conduit grooves, annual ring patterns, The tactile sensation of knots can be reproduced. As shown in (a) below, the raised portion 55 can reproduce the tactile sensation of the conduit groove of the natural wood plate. In the case of (a), (a1) or (a2) can be selected. As shown in (b), the raised portion 55 can reproduce the tactile sensation of the annual ring pattern. In the case of (b), (b1) or (b2) can be selected. As shown in (c), the raised portion 55 can reproduce the tactile sensation of the knot. In the case of (c), (c1) or (c2) can be selected. (a1), (a2), (b1), (b2), (c1) and (c2) are the type of wood for which the surface texture should be reproduced (for example, cedar wood, zelkova wood, etc.), the type of wood It can be appropriately selected according to the type of surface finish (planing, carbonization, embossing, etc.), preference of the user of the decorative sheet, and the like. Two or more of (a), (b) and (c) may be combined.

(a) The raised portion 55 reproduces the tactile sensation of the conduit groove of the natural wood plate.
(a1) In a plan view, a raised portion 55 is formed in the region of the conduit groove in the natural wood board or in the vicinity thereof. More specifically, part or all of the interior of each conduit groove, part or all of the periphery of each conduit groove, or part or all of the interior of each conduit groove and part or all of its periphery , a raised portion 55 may be formed.
(a2) In a plan view, the raised portion 55 may be formed in a part or the whole of the area other than the conduit groove in the natural wood board, that is, the area where the conduit groove is absent.

(b) The raised portion 55 reproduces the tactile sensation of the annual ring pattern of the natural wood board.
(b1) In plan view, a raised portion 55 is formed in the region of the early wood portion 33A in the annual ring pattern of the natural wood board or in the vicinity thereof. More specifically, part or all of the interior of each early material portion 33A, part or all of the periphery of each early material portion 33A, or part or all of the interior of each early material portion 33A and its A raised portion 55 may be formed in part or all of the periphery.
(b2) In a plan view, a raised portion 55 is formed in the region of the latewood portion 33B in the annual ring pattern of the natural wood board or in the vicinity thereof. More specifically, part or all of the inside of each late wood part 33B, part or all of the periphery of each late wood part 33B, or part or all of the inside of each late wood part 33B and its A raised portion 55 may be formed in part or all of the periphery.

(c) The raised portion 55 reproduces the tactile feel of the knot 33C of the natural wood board.
(c1) In plan view, a raised portion 55 is formed in the region of the knot 33C of the natural wood board or in the vicinity thereof. More specifically, part or all of the interior of each node 33C, part or all of the periphery of each node 33C, or part or all of the interior of each node 33C and part or all of its periphery , a raised portion 55 may be formed.
(c2) In a plan view, the raised portion 55 may be formed in a part or the whole of the region other than the knots 33C of the natural wood board, that is, the region where the knots 33C are absent.

As described above, the raised portion 55 may include the first binder resin 56 and the first particles 57 . The first binder resin 56 holds the first particles 57 .

<<First binder resin>>
Examples of the first binder resin 56 of the raised portion 55 include a thermoplastic resin and a cured product of a curable resin composition. A cured product of the curable resin composition has excellent scratch resistance. In this regard, the first binder resin 56 may include a cured product of a curable resin composition. The ratio of the cured product of the curable resin composition to the total amount of the first binder resin 56 may be 50% by mass or more, 70% by mass or more, 90% by mass or more, or 100% by mass or more.

Examples of thermoplastic resins include acrylic resins, cellulose resins, urethane resins, vinyl chloride resins, polyester resins, polyolefin resins, polycarbonate, nylon, polystyrene, and ABS resins.

Examples of the cured product of the curable resin composition include a cured product of a thermosetting resin composition and a cured product of an ionizing radiation-curable resin composition. A cured product of the thermosetting resin composition is excellent in both scratch resistance and stain resistance. A cured product of the thermosetting resin composition can be easily used together with an ultraviolet absorber. A cured product of the ionizing radiation-curable resin composition is excellent in both scratch resistance and stain resistance. The cured product of the ionizing radiation-curable resin composition is also excellent in maintaining performance over time.

A thermosetting resin composition is a composition containing at least a thermosetting resin, and is a resin composition that is cured by heating. Examples of thermosetting resins include acrylic resins, urethane resins, phenol resins, urea melamine resins, epoxy resins, unsaturated polyester resins, and silicone resins. In addition to these thermosetting resins, the thermosetting resin composition may optionally contain a curing agent, a curing catalyst, and the like.

As a thermosetting resin composition, a two-liquid curing composition having a polyol resin as a main agent and an isocyanate compound as a curing agent is exemplified. Examples of polyol-based resins include acrylic polyols and polyester polyols.

The ionizing radiation curable resin composition is exemplified by an electron beam curable resin composition and an ultraviolet curable resin composition. The electron beam curable resin composition does not require a polymerization initiator, so it is excellent in that it has little odor and is less likely to be colored. When the raised portion 55 contains an ultraviolet absorber, which will be described later, the electron beam curable resin composition can increase the crosslink density of the raised portion 55 and is excellent in scratch resistance and stain resistance.

The ionizing radiation-curable resin composition is a composition containing a compound having an ionizing radiation-curable functional group (hereinafter also referred to as an "ionizing radiation-curable compound"). The ionizing radiation-curable functional group is a group that is cross-linked and cured by irradiation with ionizing radiation. Examples of ionizing radiation-curable functional groups include functional groups having ethylenic double bonds, such as (meth)acryloyl groups, vinyl groups, and allyl groups. Epoxy groups and/or oxetanyl groups are also exemplified as ionizing radiation-curable functional groups.

As used herein, a (meth)acryloyl group refers to an acryloyl group or a methacryloyl group. As used herein, (meth)acrylate refers to acrylate or methacrylate. Ionizing radiation means electromagnetic waves or charged particle beams that have energy quanta capable of polymerizing or cross-linking molecules. Examples of ionizing radiation include ultraviolet (UV) and electron beam (EB). Examples of ionizing radiation include electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion beams.

Specifically, the ionizing radiation-curable compound is appropriately selected from polymerizable monomers and polymerizable oligomers (sometimes referred to as "polymerizable prepolymers") conventionally used as ionizing radiation-curable resins. may be

The ionizing radiation-curable compound may be a compound having two or more ethylenically unsaturated bond groups. The ionizing radiation-curable compound may be a polyfunctional (meth)acrylate compound having two or more ethylenically unsaturated bond groups. Polyfunctional (meth)acrylate compounds may be either monomers or oligomers.

Among polyfunctional (meth)acrylate compounds, bifunctional (meth)acrylate monomers include ethylene glycol di(meth)acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, 1,6-hexanediol. A diacrylate etc. are illustrated. Examples of tri- or more functional (meth)acrylate monomers include trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, dipenta Examples include erythritol tetra(meth)acrylate and isocyanuric acid-modified tri(meth)acrylate. Examples of polyfunctional (meth)acrylate oligomers include acrylate polymers such as urethane (meth)acrylate, epoxy (meth)acrylate, polyester (meth)acrylate, and polyether (meth)acrylate.

Urethane (meth)acrylates are obtained, for example, by reacting polyhydric alcohols and organic diisocyanates with hydroxy (meth)acrylates.

Preferred epoxy (meth)acrylates include (meth)acrylates obtained by reacting tri- or more functional aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins, etc. with (meth)acrylic acid; (Meth)acrylates obtained by reacting aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins, etc. with polybasic acids and (meth)acrylic acid, and bifunctional or higher aromatic epoxy resins, alicyclic It is a (meth)acrylate obtained by reacting a group epoxy resin, an aliphatic epoxy resin, or the like with a phenol and (meth)acrylic acid.

The ionizing radiation-curable resins may be used singly or in combination of two or more.

When the ionizing radiation-curable compound is an ultraviolet-curable compound, the ionizing radiation-curable resin composition may contain additives such as a photopolymerization initiator and a photopolymerization accelerator. The photopolymerization initiator may be one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyldimethylketal, benzoylbenzoate, α-acyloxime ester, thioxanthones, and the like. The photopolymerization accelerator can reduce polymerization inhibition caused by air during curing and increase the curing speed. The photopolymerization accelerator may be, for example, one or more selected from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, and the like.

<<First Particle>>
The raised portion 55 may include first particles 57 . The first average particle diameter DA, which is the average particle diameter of the first particles 57, can be determined in consideration of the desired tactile sensation. The first average particle diameter DA of the first particles 57 may be 10 μm or more. By setting the first average particle diameter DA of the first particles 57 to 10 μm or more, the tactile sensation obtained from the region where the raised portion 55 is arranged, that is, the first region 61 can be emphasized, and the tactile sensation obtained from the decorative sheet can be sufficiently improved. can. A first average particle diameter DA, which is the average particle diameter of the first particles 57, may be 15 μm or more, 20 μm or more, or 25 μm or more.

By setting the upper limit of the first average particle diameter DA of the first particles 57, it is possible to suppress the falling off of the first particles 57 from the raised portion 55. FIG. By setting the upper limit of the first average particle diameter DA of the first particles 57, it is possible to suppress the occurrence of extremely large protrusions due to the first particles 57, and to accurately reproduce the tactile sensation of natural objects. Based on these, the first average particle diameter DA of the first particles 57 may be 50 μm or less, 40 μm or less, or 35 μm or less.

The particle diameter (μm) of the first particles 57 and second particles 67, which will be described later, is the maximum width, that is, the maximum length of the particles in the longitudinal section of the decorative sheet. The particle diameters (μm) of the first particles 57 and the second particles 67 are, as shown in FIG. . The average particle diameter (μm) of the particles 57 and 67 was determined by magnifying and observing thirty cross-sectional areas having a length of 500 μm or more and 1500 μm or less along the direction orthogonal to the normal direction of the decorative sheet. The particle size of one large particle is measured and specified as the average value (μm) of the particle sizes of the thirty particles measured.

Resin particles and inorganic particles are exemplified as the first particles 57 . The resin particles can have a large average particle size, and as a result can impart a strong tactile feel. The shape of the first particles 57 is not particularly limited. The shape of the first particles 57 is preferably spherical. The shape of the first particles 57 may be irregular.

Resin particles as the first particles 57 include polymethyl methacrylate, polyacrylic-styrene copolymer, melamine resin, urethane resin, polyamide resin such as nylon, polycarbonate, polystyrene, polyvinyl chloride, benzoguanamine-melamine-formaldehyde condensate, It may contain one or more resins such as silicone resins, fluorine-based resins, and polyester-based resins. Preferably, the first particles 57 are polymethylmethacrylate particles. The inorganic particles as the first particles 57 may be inorganic particles exemplified by the second particles 67 described later.

The content of the first particles 57 may be 5 parts by mass or more and 70 parts by mass or less, 10 parts by mass or more and 60 parts by mass or less, or 20 parts by mass or more and 50 parts by mass with respect to 100 parts by mass of the first binder resin 56. Part or less is acceptable. By setting the content of the first particles 57 to 5 parts by mass or more relative to 100 parts by mass of the first binder resin 56, a strong tactile sensation can be imparted. By setting the content of the first particles 57 to 70 parts by mass or less with respect to 100 parts by mass of the first binder resin 56, a decrease in the strength of the raised portion 55 can be suppressed.

《Thickness》
The thickness of the raised portion 55 can be determined in consideration of the desired tactile sensation. The average thickness of the raised portion 55 may be 20 μm or more. By setting the average thickness of the raised portion 55 to 20 μm or more, it becomes easier to perceive the protrusion of the first region 61 facing the raised portion 55 through the sense of touch and sight. By setting the average thickness of the raised portion 55 to 20 μm or more, it is possible to prevent the first particles 57 from falling off from the first binder resin 56 . The average thickness of the raised portion 55 may be 22 μm or more, 25 μm or more, or 27 μm or more.

By setting an upper limit for the average thickness of the raised portion 55 , the first region 61 can be raised appropriately due to the raised portion 55 . This can prevent the tactile sensation from becoming too strong and unnatural. Based on this point, the average thickness of the raised portion 55 may be 60 μm or less, or may be 50 μm or less. A method for measuring the average thickness TA of the raised portion 55 will be described later together with a method for measuring the average thickness TB of the surface protective layer 60 .

The value of the ratio of the first average particle diameter DA (μm), which is the average particle diameter of the first particles, to the first average thickness TA (μm), which is the average thickness of the raised portion 55, that is, the “average particle diameter of the first particles 57 /Average thickness of the raised portion 55" may be 0.7 or more and 1.3 or less, 0.8 or more and 1.2 or less, or 0.9 or more and 1.1 or less. By setting "average particle diameter of first particles 57/average thickness of raised portion 55" to 0.7 or more, decorative sheet 20 imparts a strong tactile sensation. By setting “average particle size of particles α/average thickness of build-up ink layer” to 1.3 or less, it is possible to prevent the first binder resin 56 from coming off from the first binder resin 56 .

The raised part 55 may contain an additive as needed. Examples of additives include antioxidants, ultraviolet absorbers, light stabilizers, leveling agents, and the like.

The raised portion 55 can be produced, for example, by applying a raised portion composition on a base material, drying it, and curing it as necessary. The bulging portion composition may contain the first binder resin 56 and the first particles 57, and a solvent or the like added as necessary.

<Surface protective layer>
The surface protective layer 60 includes a first region 61 facing the raised portion 55 in the third direction D3 and a second region 62 not facing the raised portion 55 . The raised portion 55 faces only the first region 61 . The first region 61 and the second region 62 are located on the base material 30 . The first region 61 and the second region 62 overlap the base material 30 when projected in the third direction D3.

The combination of the raised portion 55 and the surface protective layer 60 provides the decorative sheet 20 with a tactile sensation obtained from the surface protective layer 60 in the first region 61 facing the raised portion 55 and a surface texture in the second region 62 not facing the raised portion 55 . The difference from the tactile sensation obtained from the protective layer 60 can be made perceptible. Due to the difference in tactile sensations, complex tactile sensations can be imparted to the user who touches the decorative sheet 20. - 特許庁That is, various tactile sensations can be imparted. The decorative sheet 20 can impart a tactile sensation that highly accurately reproduces the tactile sensation of a natural object through rich tactile expression. By weakening the artificial impression of the decorative sheet 20, the decorative sheet 20 can have a natural texture.

The surface protective layer 60 may be located on at least part of the region facing the raised portion 55 and at least part of the region not facing the raised portion 55 . The surface protective layer 60 may be located on the entire region facing the raised portion 55 and the entire region not facing the raised portion 55 . The surface protective layer 60 may face the entire area of the base material 30 in the third direction D3. That is, the surface protective layer 60 may be arranged over the entire area of the decorative sheet 20 . By arranging the surface protective layer 60 on the entire surface of the decorative sheet 20, the above-described effect of the difference in tactile sensation becomes more pronounced. By arranging the surface protective layer 60 on the entire area of the decorative sheet 20, the abrasion resistance of the decorative sheet 20 is improved.

The surface protective layer 60 may contain a second binder resin 66 and second particles 67 . A second binder resin 66 holds the second particles 67 .

<<Second binder resin>>
Examples of the second binder resin 66 of the surface protective layer 60 include thermoplastic resins and cured products of curable resin compositions. A cured product of the curable resin composition has excellent scratch resistance. In this regard, the second binder resin 66 may include a cured product of a curable resin composition. The ratio of the cured product of the curable resin composition to the total amount of the second binder resin 66 may be 50% by mass or more, 70% by mass or more, 90% by mass or more, or 100% by mass.

The thermoplastic resin used for the second binder resin 66 may be the thermoplastic resin exemplified for the first binder resin 56 of the raised portion 55 .

Examples of the cured product of the curable resin composition include a cured product of a thermosetting resin composition and a cured product of an ionizing radiation-curable resin composition. A cured product of the thermosetting resin composition is excellent in both scratch resistance and stain resistance. A cured product of the thermosetting resin composition can be easily used together with an ultraviolet absorber. A cured product of the ionizing radiation-curable resin composition is excellent in both scratch resistance and stain resistance. The cured product of the ionizing radiation-curable resin composition is also excellent in maintaining performance over time.

The cured product of the thermosetting resin composition used for the second binder resin 66 may be the cured product of the thermosetting resin composition exemplified for the first binder resin 56 of the raised portion 55 . The cured product of the ionizing radiation-curable resin composition used for the second binder resin 66 may be the cured product of the ionizing radiation-curable resin composition exemplified for the first binder resin 56 of the raised portion 55 .

《Second particle》
The surface protective layer 60 may contain second particles 67 . The second average particle diameter DB, which is the average particle diameter of the second particles 67, can be determined in consideration of the desired tactile sensation. The second average particle diameter DB of the second particles 67 may be 10 μm or more. A second average particle diameter DB of the second particles 67 may be 10 μm or more and 20 μm or less. By setting the second average particle diameter DB of the second particles 67 to 10 μm or more, the tactile sensation obtained from the surface protective layer 60 can be emphasized. Thereby, the tactile sensation obtained from the decorative sheet 20 is sufficiently improved. By setting the second average particle diameter DB of the second particles 67 to 20 μm or less, the tactile sensation obtained in the first region 61 facing the raised portion 55 and the tactile sensation obtained in the second region 62 not facing the raised portion 55 are obtained. The difference is remarkable. As a result, the decorative sheet 20 can sufficiently reproduce the feel of a natural object. By setting the second average particle diameter DB of the second particles 67 to 20 μm or less, it is possible to prevent the second particles 67 from falling off from the second binder resin 66 .

A second average particle diameter DB of the second particles 67 may be 10 μm or more and 20 μm or less, 11 μm or more and 18 μm or less, or 12 μm or more and 17 μm or less.

The second average particle diameter DB of the second particles 67 may be smaller than the first average particle diameter DA of the first particles 57 . That is, the relationship "second average particle size DB<first average particle size DA" may be satisfied. By satisfying the above relationship, the difference between the tactile sensation obtained from the first area 61 and the tactile sensation obtained from the second area 62 can be emphasized, and the tactile sensation obtained from natural objects can be sufficiently reproduced by the decorative sheet. “First average particle diameter DA of first particles 57−Second average particle diameter DB of second particles 67” may be 5 μm or more, 10 μm or more, or 12 μm or more. By setting the upper limit of "the first average particle diameter DA of the first particles 57 - the second average particle diameter DB of the second particles 67", the above-described difference in tactile sensation can be appropriately achieved. As a result, the tactile sensation obtained from natural objects can be reproduced with high accuracy. From this point of view, “the first average particle diameter DA of the first particles 57−the second average particle diameter DB of the second particles 67” may be 40 μm or less, 30 μm or less, or 20 μm or less.

Resin particles and inorganic particles are exemplified as the second particles 67 . The inorganic particles can reduce the luster of the decorative sheet 20 . By suppressing the luster of the decorative sheet 20, the texture of the decorative sheet 20 can be suppressed from being unnatural, and the texture of a natural object can be reproduced. The shape of the second particles 67 is not particularly limited. The shape of the second particles 67 is preferably spherical. The shape of the second particles 67 may be irregular.

The resin particles used for the second particles 67 may be the organic particles exemplified for the first particles 57 . The inorganic particles used for the second particles 67 may include one or more inorganic substances such as silica, alumina, zirconia, and titania. Preferably, the second particles 67 are silica.

The content of the second particles 67 may be 5 parts by mass or more and 70 parts by mass or less, 10 parts by mass or more and 60 parts by mass or less, or 20 parts by mass or more and 50 parts by mass with respect to 100 parts by mass of the second binder resin 66. Part or less is acceptable. By setting the content of the second particles 67 to 5 parts by mass or more with respect to 100 parts by mass of the second binder resin 66, it is possible to easily improve the tactile sensation and suppress the luster of the decorative sheet 20 . By setting the content of the second particles 67 to 70 parts by mass or less with respect to 100 parts by mass of the second binder resin 66, the decrease in strength of the surface protective layer 60 can be suppressed.

《Thickness》
The thickness of the surface protective layer 60 can be determined in consideration of the desired tactile sensation. A second average thickness TB, which is the average thickness of the surface protective layer 60, may be 3 μm or more and 15 μm or less. By setting the second average thickness TB of the surface protective layer 60 to 3 μm or more, it is possible to prevent the second particles 67 from falling off from the second binder resin 66 . This makes it possible to impart excellent scratch resistance to the decorative sheet 20 . By setting the second average thickness TB to 15 μm or less, the protrusion of the raised portion 55 can be maintained on the surface of the decorative sheet 20 . Thereby, the decorative sheet 20 can impart a complex and strong tactile feel. Based on the above effects, the average thickness of the surface protective layer may be 4 μm or more and 13 μm or less, 5 μm or more and 12 μm or less, 6 μm or more and 10 μm or less, or 7 μm or more and 10 μm or less.

In decorative sheet 20 of the present embodiment, second average thickness TB of surface protective layer 60 and first average thickness TA of raised portion 55 may be adjusted as follows. The value of the ratio of the second average thickness TB (μm), which is the average thickness of the surface protective layer 60, to the first average thickness TA (μm), which is the average thickness of the raised portion 55, that is, the “second average thickness of the surface protective layer 60 TB/first average thickness TA of raised portion 55" may be 0.15 or more and 0.75 or less, may be 0.20 or more and 0.65 or less, may be 0.25 or more and 0.55 or less, or may be 0.25 It may be greater than or equal to less than 0.50. By adjusting "the second average thickness TB of the surface protective layer 60/the first average thickness TA of the raised portion 55" within the above numerical range, the feel of the decorative sheet 20 obtained from the first region 61 facing the raised portion. , the difference from the tactile sensation of the decorative sheet 20 obtained from the second region 62 not facing the raised portion 55 is moderate.

In decorative sheet 20 of the present embodiment, second average thickness DB of surface protective layer 60 and second average particle diameter DB of second particles 67 may be adjusted as follows. The value of the ratio of the second average particle diameter DB (μm), which is the average particle diameter of the second particles 67, to the second average thickness TB (μm), which is the average thickness of the surface protective layer 60. 2 average particle diameter DB/second average thickness TB of surface protective layer 60" may be 1.3 or more and 2.5 or less, 1.4 or more and 2.3 or less, or 1.5 or more and 2.1 or less. good. By setting "the second average particle diameter DB of the second particles 67/the second average thickness TB of the surface protective layer 60" to 1.3 or more, the tactile sensation obtained from the surface protective layer 60 can be sufficiently emphasized. By setting “average particle diameter of particles β/average thickness of surface protective layer” to 2.5 or less, it is possible to prevent second particles 67 from falling off from second binder resin 66 .

The average thickness of each portion to be measured is specified in the following steps (X1) to (X3).
(X1) A cross-sectional area of the decorative sheet 20 along the normal direction of the decorative sheet and having a width of 500 μm or more and 1500 μm or less along the direction orthogonal to the normal direction is observed. In this cross-sectional area, the thickness of the portion to be measured is measured every 25 μm along the width direction of the decorative sheet. For example, 20 thicknesses are measured for a cross-sectional area with a width of 500 μm.
(X2) Further, the thickness measurement of (X1) is carried out for cross-sectional areas of nine fields of view.
(X3) Let the arithmetic mean value of all thickness measurement values measured in the cross-sectional areas of 10 fields of view be the average thickness (μm) of the target portion.

The average thickness TB of the surface protective layer 60 and the average thickness TA of the raised portion 55 are specified as follows, since it is assumed that the boundary between the surface protective layer 60 and the raised portion 55 is not clear.

The average thickness TB of the surface protective layer 60 is specified from the value of the thickness of the surface protective layer 60 measured in the second region 62 according to (X1) to (X3) above.

The average thickness TA of the raised portion 55 is specified by the following procedure. First, the total average thickness of the raised portion 55 and the surface protective layer in the first region 61 is specified according to (X1) to (X3) above. Next, the average thickness TB of the surface protective layer 60 is specified based on the measured value in the second region 62 . The difference between the total average thickness of the raised portion 55 and the surface protective layer 60 and the average thickness TB of the surface protective layer 60 is specified as the average thickness TA of the raised portion 55 .

The surface protective layer 60 may contain additives as necessary. Examples of additives include antioxidants, ultraviolet absorbers, light stabilizers, leveling agents, and the like.

The surface protective layer 60 can be produced, for example, by applying a surface protective layer composition onto the substrate 30 on which the raised portion 55 is formed, drying it, and curing it as necessary. The surface protective layer composition contains materials (binder resin, particles β, etc.) constituting the surface protective layer, a solvent added as necessary, and the like.

<Other layers>
The decorative sheet 20 may include layers other than the base material 30 , the raised portion 55 and the surface protective layer 60 . Other layers include the design layer 40, the primer layer 45, the adhesive layer, and the like.

《Design layer》
As shown in FIG. 1, the decorative sheet 20 may include a design layer 40 to improve design. The design layer 40 has a design. The design layer 40 is a decoration layer. The design layer 40 may be arranged near the substrate 30 from the viewpoint of enhancing the weather resistance of the design layer 40 . The design layer 40 may be positioned between the base material 30 and the raised portion 55 and/or on the same plane as the raised portion 55 on the base material 30 in the third direction D3. When a primer layer 45, which will be described later, is positioned between the base material 30 and the raised portion 55, the design layer 40 may be positioned between the base material 30 and the primer layer 45 in the third direction D3. The design layer 40 may be located on the entire area of the decorative sheet 20 or may be located only on a partial area of the decorative sheet 20 .

Examples of the design layer 40 include a colored layer formed by uniformly applying a single color ink; a pattern layer formed by printing a pattern with ink; a metal thin film; and the like. The design layer 40 may include two or more layers such as a colored layer, a pattern layer and a metal thin film. Patterns (patterns) expressed by the design layer 40 include wood grain patterns such as annual rings and duct grooves on the surface of the wood plate; stone grain patterns on the surface of stone plates such as marble and granite; texture patterns on the surface of fabric; tile pattern including joint groove; brickwork pattern including joint groove; grain pattern; satin pattern; abstract patterns such as geometric patterns, letters, figures, polka dots and floral patterns; and the like.

The decorative sheet may include a pattern layer as the design layer 40 . A wood grain pattern may be displayed by the pattern layer and the raised portion 55 . According to this example, natural objects can be reproduced with high accuracy through the interaction of visual and tactile sensations.

The composition used for the colored layer and pattern layer is a mixture of a binder resin, a coloring agent such as a pigment, a dye, an extender, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, an ultraviolet absorber, a light stabilizer, etc. Ink that has been washed may be used. The binder resin used for the colored layer and pattern layer is not particularly limited. Examples of binder resins include urethane resins, acrylic polyol resins, acrylic resins, ester resins, amide resins, butyral resins, styrene resins, urethane-acrylic copolymers, vinyl chloride-vinyl acetate copolymer resins, vinyl chloride-vinyl acetate- Resins such as acrylic copolymer resin, chlorinated propylene resin, nitrocellulose resin, and cellulose acetate resin are exemplified. Also, various types of resins such as one-pack curable resins and two-pack curable resins with a curing agent such as an isocyanate compound can be applied to the binder resin used for the colored layer and pattern layer.

Colorants are not particularly limited. Inorganic pigments such as carbon black (ink), iron black, titanium white, antimony white, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine, cobalt blue; quinacridone red, isoindolinone yellow, nickel azo complex. , phthalocyanine blue, azomethine azo black and other organic pigments or dyes; metal pigments made of scale-like foil pieces such as aluminum and brass; pearl luster (pearl) made of scale-like foil pieces such as titanium dioxide-coated mica and basic lead carbonate Pigments; and the like are exemplified.

The content of the coloring agent is not particularly limited. The content of the coloring agent may be adjusted according to the pattern, color tone and density of the decorative layer, the material of the coloring agent, and the like. As an example, the content of the coloring agent may be 20 parts by mass or more and 500 parts by mass or less, or 50 parts by mass or more and 300 parts by mass or less, or It may be more than 200 parts by mass and less than 200 parts by mass.

The colored layer and pattern layer may contain additives such as ultraviolet absorbers, light stabilizers and colorants. The thicknesses of the colored layer and the pattern layer can be appropriately selected according to the desired pattern. The thickness of the colored layer and the pattern layer may be selected from the viewpoint of concealing the ground color of the support material 15 and improving the design. The thickness of the colored layer and pattern layer may be 0.5 μm or more and 20 μm or less, 1 μm or more and 10 μm or less, or 2 μm or more and 5 μm or less.

Examples of metal thin films include thin films of single metal elements such as gold, silver, copper, tin, iron, nickel, chromium, and cobalt; thin films of alloys containing two or more of the above metal elements; Examples of alloys include brass, bronze, stainless steel, and the like. The film thickness of the metal thin film may be about 0.1 μm to 1 μm.

《Primer layer》
The decorative sheet 20 may include a primer layer 45 for the purpose of improving adhesion. The primer layer 45 may be located over the entire area between the substrate 30 and the raised portion 55 . As shown in FIG. 1, when the decorative sheet 20 includes the design layer 40, the primer layer 45 may be located in the entire area between the design layer 40 and the raised portion 55 in the third direction D3. .

The primer layer 45 is mainly composed of a binder resin, and may contain additives such as ultraviolet absorbers and light stabilizers, if necessary. As binder resins, urethane resins, acrylic polyol resins, acrylic resins, ester resins, amide resins, butyral resins, styrene resins, urethane-acrylic copolymers, polycarbonate-based urethane-acrylic copolymers (having a carbonate bond in the polymer main chain) and a polymer having two or more hydroxyl groups at the terminal and side chain (polycarbonate polyol)-derived urethane-acrylic copolymer), vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl acetate-acrylic copolymer Examples include resins such as resins, chlorinated propylene resins, nitrocellulose resins (nitrocellulose), and cellulose acetate resins. Binder resin may contain these independently and may contain multiple types. The binder resin may be obtained by adding a curing agent such as an isocyanate-based curing agent or an epoxy-based curing agent to these resins, followed by cross-linking and curing. The binder resin may be obtained by crosslinking and curing a polyol resin such as an acrylic polyol resin with an isocyanate curing agent, or may be obtained by crosslinking and curing an acrylic polyol resin with an isocyanate curing agent.

The primer layer 45 may contain an ultraviolet absorber and/or a light stabilizer for the purpose of improving weather resistance. Primer layer 45 may include conventional UV absorbers and light stabilizers.

The thickness of the primer layer 45 may be 0.01 μm or more and 10 μm or less, 0.7 μm or more and 8 μm or less, or 1.0 μm or more and 6 μm or less.

《Adhesive layer》
The decorative sheet 20 and the decorative material 100 may include an adhesive layer between the base material 30 and the support material 15 in the third direction D3.

The adhesive used for the adhesive layer is not particularly limited. The adhesive used for the adhesive layer may be a known adhesive. The adhesive used for the adhesive layer may be an adhesive such as a heat-sensitive adhesive or a pressure-sensitive adhesive. The resin used for the adhesive may be acrylic resin, urethane resin, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, styrene-acrylic copolymer resin, polyester resin, polyamide resin, or the like. The resin used for the adhesive may contain these alone or in combination. The resin used for the adhesive may be a two-component curing type polyurethane adhesive or a polyester adhesive using an isocyanate compound or the like as a curing agent. A pressure-sensitive adhesive may be used for the adhesive layer. As the adhesive, an acrylic-based, urethane-based, silicone-based, rubber-based, or other adhesive can be appropriately selected.

The adhesive layer is prepared by coating the above resin in a form that can be applied, such as a solution or emulsion, by means of gravure printing, screen printing, reverse coating using a gravure plate, or the like, followed by drying. can be The thickness of the adhesive layer is not particularly limited. From the viewpoint of obtaining excellent adhesiveness, the thickness of the adhesive layer may be 1 μm or more and 100 μm or less, 5 μm or more and 50 μm or less, or 10 μm or more and 30 μm or less.

<Surface shape>
As described above, the maximum height Rz, the skewness Ssk and the kurtosis Sku on the surface 20A of the decorative sheet 20 constituted by the surface protective layer 60 may be adjusted as follows.・Maximum height RzA in the first region 61: 25 μm or more ・Maximum height RzB in the second region 62: 18 μm or more ・Skewness SskA in the first region 61: greater than 0 ・Skewness SskB in the second region 62 : greater than 0 ・Kurtosis SkuA in the first region 61: 10.0 or more ・Kurtosis SkuB in the second region 62: 4.0 or more

As a result of extensive studies by the inventors of the present invention, the decorative sheet 20 includes high, fine, and sharp ridges in both the first region 61 and the second region 62 by including the surface 20A having the surface characteristics described above. It has an uneven surface. Therefore, a strong tactile sensation is imparted from the entire surface protective layer 60 . Additionally, the first region 61 has a greater maximum height Rz and a greater kurtosis Sku compared to the second region 62 . Therefore, the first region 61 includes higher and sharper peaks or protrusions compared to the second region 62, giving a stronger tactile sensation. In addition, the fact that the first region 61 is raised more than the second region 62 by the raised portion 55 is perceived by touch. The combination of the first region 61 and the second region 62 can impart a complex and strong tactile sensation to the user who touches the decorative sheet 20 . That is, various tactile sensations can be emphasized and imparted. The decorative sheet 20 can impart a tactile sensation that reproduces the tactile sensation of a natural object with high accuracy through rich tactile expression. The artificial impression of the decorative sheet 20 is weakened, and a natural texture can be created in the decorative sheet 20.例文帳に追加

In addition, the surface 20A having such surface properties can be provided by the decorative sheet 20 having the configuration described above, as an example. In this decorative sheet 20 , the surface protective layer 60 contains a second binder resin 66 and second particles 67 . A second average thickness TB (μm) that is the average thickness of the surface protective layer 60 is smaller than a second average particle diameter DB (μm) that is the average particle diameter of the second particles 67 . A first average thickness TA, which is the average thickness of the raised portion 55, is larger than the second average particle diameter DB (μm).

In this decorative sheet, the raised portion 55 may contain the first binder resin 56 and the first particles 57 . The first average particle diameter DA, which is the average particle diameter of the first particles 57, may be 0.7 to 1.3 times the first average thickness TA of the raised portion 55. As shown in FIG. According to this configuration, since the raised portion 55 contains the first binder resin 56 and the first particles 57, the raised portion 55 has an uneven surface. In the first region 61, the surface protective layer 60 is positioned on the raised portion 55, which is the uneven surface. Therefore, it is possible to provide the first region 61 with a stronger uneven surface than the second region 62 . In particular, by setting the first average particle diameter DA, which is the average particle diameter of the first particles 57, to 0.7 times or more and 1.3 times or less of the first average thickness TA of the raised portion 55, the first region 61 is , will include moderately higher and moderately sharper peaks compared to the second region 62 . That is, the first region 61 can have a greater maximum height Rz and a greater kurtosis Sku compared to the second region 62 .

In this decorative sheet 20 , the maximum height Rz of the surface protective layer 60 defined in JIS B0601:2013 may be larger in the first region 61 than in the second region 62 . A stronger tactile sensation is imparted to the first region 61 than to the second region 62 . Furthermore, the first region 61 is raised compared to the second region 62 . As a result, the difference between the tactile sensation obtained from the first area 61 and the tactile sensation obtained from the second area 62 is perceived more clearly.

Also, the above-described surface characteristics can be realized by the decorative sheet 20 having the following configuration. In this decorative sheet 20, the raised portion 55 includes a first binder resin 56 and first particles 57 having an average particle diameter DA of 10 μm or more. The surface protective layer 60 includes a second binder resin 66 and second particles 67 having an average particle size of 10 μm or more and 20 μm or less. The average thickness TA of the raised portion 55 is 20 μm or more. The average thickness TB of the surface protection layer 60 is 3 μm or more and 15 μm or less.

The maximum height Rz, the skewness Ssk, and the kurtosis Sku on the surface 20A of the decorative sheet 20 will be described below in order.

<Maximum height Rz>
The maximum height Rz is the maximum height of the contour curve defined in JIS B0601:2013. The maximum height RzA is a measured value at the surface 20A that becomes the first region 61. As shown in FIG. The maximum height RzB is a measured value at the surface 20A that becomes the second region 62. As shown in FIG. In the measurement of maximum height Rz referred to in this specification, the cutoff value shall be 0.8 mm.

The maximum height RzA of the surface 20A in the first region 61 facing the raised portion 55 may be 25 μm. By setting the maximum height RzA to 25 μm or more, the user who touches the decorative sheet 20 can be given a strong tactile sensation from the first region 61 . The maximum height RzA in the first region 61 may be 30 μm or more, 35 μm or more, or 40 μm or more. According to these examples, the tactile sensation obtained from the first region 61 can be emphasized.

An upper limit of the maximum height RzA in the first region 61 may be provided. By setting an upper limit for the maximum height RzA, it is possible to suppress the formation of extremely large peaks or protrusions. This makes it possible to suppress unnatural tactile sensations and reproduce the tactile sensations of natural objects. For these reasons, the maximum height RzA in the first region may be 60 μm or less, 55 μm or less, or 50 μm or less.

The maximum height RzB of the surface 20A in the second region 62 that does not face the raised portion 55 may be 18 μm or more. By setting the maximum height RzB to 18 μm or more, the user who touches the decorative sheet 20 can be given a strong tactile sensation from the second region 62 . The maximum height RzB of the second region 62 may be 19 μm or more, or may be 20 μm or more. According to these examples, the tactile sensation obtained from the second region 62 can be emphasized.

An upper limit may be provided for the maximum height RzB in the second region 62 . By setting an upper limit on the maximum height RzB, a sufficient difference between the maximum height RzA of the first region 61 and the maximum height RzB of the second region 62 can be ensured. Thereby, the difference between the tactile sensation obtained from the first area 61 and the tactile sensation obtained from the second area 62 can be sufficiently perceived. Therefore, the maximum height RzB in the second region 62 may be 29 μm or less, 26 μm or less, or 24 μm or less.

The maximum height RzB in the second area 62 may be smaller than the maximum height RzA in the first area 61 . That is, "RzB<RzA" may be established. Satisfying this relationship increases the difference between the tactile sensation obtained from the first region 61 and the tactile sensation obtained from the second region 62 . Thereby, the decorative sheet 20 can more accurately reproduce the tactile sensation obtained when touching a natural object. In anticipation of such effects, the value of "RzA-RzB" may be 2 µm or more, 4 µm or more, or 6 µm or more.

By setting an upper limit to the value of "RzA-RzB", the difference between the tactile sensation obtained from the first region 61 and the tactile sensation obtained from the second region 62 can be made moderate. This makes it possible to suppress unnatural tactile sensations and reproduce the tactile sensations of natural objects. From this point of view, “RzA−RzB” may be 20 μm or less, 15 μm or less, or 10 μm or less.

<Skewness Ssk>
Skewness Ssk is defined in ISO25178-2:2012. The skewness SskA is a measured value on the surface 20A that becomes the first region 61. FIG. The skewness SskB is a measured value on the surface 20A that becomes the second region 62. FIG. The skewness SskA in the first region 61 may be greater than zero. The skewness SskB in the second region 62 may be greater than zero.

The skewness Ssk is one of the three-dimensional surface texture parameters defined by ISO. The skewness Ssk is an index that indicates the degree of deviation of the height distribution from the average plane. When the skewness Ssk is 0, the surface shape is symmetrical with respect to the height average plane. The skewness Ssk is 0 for the surface shape along the normal distribution. When the skewness Ssk is greater than 0, the surface shape is biased downward with respect to the average height plane. That is, the skewness Ssk is greater than 0 when the vicinity of the top of the peak or protrusion is sharp and thin. In other words, the skewness Ssk is greater than 0 when the vicinity of the opening of the valley or recess is wide open. When the skewness Ssk is less than 0, the surface shape is biased upward with respect to the average height plane. That is, skewness Ssk is smaller than 0 when the vicinity of the top of the ridge or projection is thick. In other words, the skewness Ssk is smaller than 0 when the vicinity of the opening of the valley or recess is narrow.

Since the skewness SskA in the first region 61 is greater than 0, the tactile sensation can be made stronger. The skewness SskA in the first region 61 may be 0.5 or more, 1.0 or more, or 2.0 or more. The upper limit of the skewness SskA in the first region 61 is not particularly limited. From the viewpoint of strength, the skewness SskA in the first region 61 may be 4.0 or less, or 3.0 or less.

By making the skewness SskB in the second region 62 greater than 0, the tactile sensation can be made stronger. The skewness SskB in the first region 61 may be 0.2 or more, 0.5 or more, or 0.8 or more. The upper limit of the skewness SskB in the second region 62 is not particularly limited. From the viewpoint of strength, the skewness SskB in the second region 62 may be 3.0 or less, or 2.0 or less.

<Kurtosis Sku>
Kurtosis Sku is defined in ISO25178-2:2012. The kurtosis SkuA is the measured value at the surface 20A that becomes the first region 61. As shown in FIG. Kurtosis SkuB is the measured value at the surface 20A that becomes the second region 62 . The kurtosis SkuA in the first region 61 may be 10.0 or more. The kurtosis SkuB in the second region 62 may be 4.0 or more.

Kurtosis Sku is one of the three-dimensional surface texture parameters defined by ISO. The kurtosis Sku is an index indicating the degree of sharpness of the height distribution from the average plane. When the kurtosis Sku is 3, the height distribution has a normal distribution profile. When the kurtosis Sku is greater than 3, the height distribution has a sharp shape. When the kurtosis Sku is less than 3, the height distribution has a collapsed shape.

By setting the kurtosis SkuA in the first region 61 to 10.0 or more, the tactile sensation can be made stronger. The kurtosis SkuA in the first region 61 may be 12.0 or higher, or 14.0 or higher. The upper limit of kurtosis SkuA is not particularly limited. The kurtosis SkuA may be 20.0 or less, more preferably 18.0 or less.

By setting the kurtosis SkuB in the second region 62 to 4.0 or more, the tactile sensation can be made stronger. The kurtosis SkuB in the second region 62 may be 4.6 or higher, 4.7 or higher, or 4.9 or higher. The upper limit of kurtosis SkuB in the second region 62 is not particularly limited. The kurtosis SkuB in the second region 62 may be 10.0 or less, 8.0 or less, or 6.5 or less.

As described above, the maximum height Rz, the skewness Ssk, and the kurtosis Sku are the first average thickness TA that is the average thickness of the raised portion 55, the second average thickness TB that is the average thickness of the surface protective layer 60, the first particles 57 A first average particle diameter DA that is the average particle diameter of, a second average particle diameter DB that is the average particle diameter of the second particles 67, the content of the first particles 57 in the raised portion 55, and the second in the surface protective layer 60 It can be adjusted by the content of the 2 particles 67 or the like. In order to adjust the maximum height RzA, the maximum height RzB, the skewness SskA, the skewness SskB, the kurtosis SkuA, and the kurtosis SkuB to the ranges described above, the above-described first average thickness TA, first average particle diameter DA, second average It is effective to set the thickness TB and the second average particle diameter DB within the numerical ranges described above.

In this specification, the maximum height RzA, the maximum height RzB, the skewness SskA, the skewness SskB, the kurtosis SkuA, and the kurtosis SkuB are the average values of 20 measured values.

The maximum height Rz, the skewness Ssk, and the kurtosis Sku can be measured using a shape analysis laser microscope for a rectangular area at any location on the surface shape of the decorative sheet 20 . The size of the rectangular area may be about 1402 μm×1051 μm. The surface shape of arbitrary 20 areas is measured, and the maximum height RzA, maximum height RzB, skewness SskA, skewness SskB, kurtosis SkuA and kurtosis SkuB can be specified as average values of the 20 points. Measurement conditions can be adjusted as appropriate, for example, measurement can be performed under the conditions described in Examples.

<Application>
The decorative material 100 and the decorative sheet 20 of the present disclosure can be used for various purposes. The following (1) to (9) are exemplified as specific applications.
(1) Surface materials for interior parts such as walls, floors, and ceilings of buildings such as houses, offices, stores, hospitals, and clinics.
(2) Surface materials for exterior parts such as outer walls, roofs, eaves, and door pockets of buildings such as houses, offices, stores, hospitals, and clinics.
(3) Surface materials for fittings such as windows, window frames, doors, and door frames (interior parts or exterior parts); surface materials for fixtures associated with fittings (handles, etc.); surface materials for jigs for fittings.
(4) Surface materials for handrails, waist walls, rims, sills, kamoi, and coping members.
(5) Surface materials for outdoor (exterior) parts such as fences, gates, pillars for drying racks, and handrails.
(6) Surface materials for furniture such as chests of drawers, desks, chairs, cupboards, and kitchen sinks; surface materials for accessories (such as handles) for furniture; surface materials for jigs for furniture.
(7) Surface materials for casings of various household appliances such as television receivers, radio receivers, refrigerators, microwave ovens, washing machines, fans, and air conditioners; surface material; home appliance jig surface material.
(8) Surface materials for OA equipment such as electronic copiers, facsimiles, printers, personal computers, and other computing equipment; Surface materials for accessories (keyboards, touch panels, etc.) for OA equipment; surface materials for jigs for various types of OA equipment.
(9) Surface materials for interior or exterior parts (walls, floors, ceilings, handrails, struts, operation panels, levers, steering wheels, steering wheels, etc.) of vehicles such as automobiles, railway vehicles, ships, aircraft, etc. .

An embodiment of the present disclosure relates to [1] to [20] below.
[1] a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion positioned between the base material and the first region of the surface protective layer;
The maximum height Rz defined in JIS B0601:2013 is 25 μm or more in the first region of the surface protective layer, and 18 μm or more in the second region of the surface protective layer,
The skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the first region of the surface protective layer and greater than 0 in the second region of the surface protective layer,
The decorative sheet, wherein the kurtosis Sku defined in ISO25178-2:2012 is 10.0 or more in the first region of the surface protective layer and 4.0 or more in the second region of the surface protective layer.
[2] The raised portion includes a first binder resin and first particles,
The decorative sheet according to [1], wherein the surface protective layer contains a second binder resin and second particles.
[3] The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The decorative sheet according to [2], wherein the average thickness of the raised portion is larger than the average particle diameter of the second particles.
[4] a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion positioned between the base material and the first region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The decorative sheet, wherein the average thickness of the raised portion is larger than the average particle diameter of the second particles.
[5] The raised portion includes a first binder resin and first particles,
The decorative sheet according to [3] or [4], wherein the average particle diameter of the first particles is 0.7 to 1.3 times the average thickness of the raised portion.
[6] The decorative sheet according to [4] or [5], wherein the maximum height Rz of the surface protective layer defined in JIS B0601:2013 is 18 µm or more.
[7] The maximum height Rz of the surface protective layer defined in JIS B0601:2013 is greater in the first region than in the second region, [4] to [6]. cosmetic sheet.
[8] a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion positioned between the base material and the first region of the surface protective layer;
The raised portion includes a first binder resin and first particles having an average particle diameter of 10 μm or more,
The surface protective layer contains a second binder resin and second particles having an average particle size of 10 μm or more and 20 μm or less,
The average thickness of the raised portion is 20 μm or more,
The decorative sheet, wherein the surface protective layer has an average thickness of 3 μm or more and 15 μm or less.
[9] The decorative sheet according to any one of [2] to [8], wherein the average particle size of the first particles is 10 μm or more and 50 μm or less.
[10] The decorative sheet according to any one of [2] to [9], wherein the raised portion has an average thickness of 20 μm or more and 60 μm or less.
[11] The decorative sheet according to any one of [2] to [10], wherein the average particle size of the second particles is smaller than the average particle size of the first particles.
[12] The decorative sheet according to any one of [4] to [11], wherein the maximum height Rz defined in JIS B0601:2013 is 25 μm or more in the first region.
[13] The decorative sheet according to any one of [4] to [12], wherein the maximum height Rz defined in JIS B0601:2013 is 18 μm or more in the second region.
[14] The decorative sheet according to any one of [4] to [13], wherein the skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the first region.
[15] The decorative sheet according to any one of [4] to [14], wherein the skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the second region.
[16] The decorative sheet according to any one of [4] to [15], wherein the kurtosis Sku defined in ISO25178-2:2012 is 10.0 or more in the first region.
[17] The decorative sheet according to any one of [4] to [15], wherein the kurtosis Sku defined in ISO25178-2:2012 is 4.0 or more in the second region. [18] The decorative sheet according to any one of [1] to [17], comprising a design layer positioned between the substrate and the surface protective layer.
[19] The decorative sheet according to [18], wherein the design layer displays a wood grain pattern.
[20] The decorative sheet according to any one of [1] to [19];
and a support member that supports the decorative sheet.

The present disclosure will be described in more detail by way of examples. The disclosure is not limited to the following examples.

1. Measurements and Evaluations Measurements and evaluations of the decorative sheets of Examples and Comparative Examples were performed as follows. The atmosphere during each measurement and evaluation was set at a temperature of 23±5° C. and a relative humidity of 40% or more and 65% or less. Moreover, before starting each measurement and evaluation, the target sample was exposed to the atmosphere for 30 minutes or more, and then the measurement and evaluation were performed. Table 1 shows the results.

1-1. Tactile Feel Twenty subjects evaluated the tactile feel of the decorative sheets obtained in Examples and Comparative Examples. The 20 subjects were five people each in their 20s, 30s, 40s, and 50s. Each subject touched the surface of the decorative sheet with the pad of the index finger of the dominant hand, and evaluated whether the tactile sensation was excellent. The evaluation criteria for the tactile sensation were "whether or not the unevenness is felt strongly" and "whether or not the tactile sensation is different between the first region and the second region and whether or not it feels natural". Table 1 shows the results of classifying the aggregated tactile evaluations according to the following criteria. Strong tactile sensation was obtained from the decorative sheets of Examples 1-5. In particular, in the decorative sheets of Examples 1 to 4, it was possible to perceive that the tactile sensation obtained in the first region facing the raised portion was more emphasized than the tactile sensation obtained in the second region not facing the raised portion. .
A: More than 18 out of 20 people answered that the tactile sensation was excellent.
B: 15 or more and 17 or less out of 20 people answered that the tactile sensation was excellent.
C: 11 or more and 14 or less out of 20 people answered that the tactile sensation was excellent.
D: Less than 10 out of 20 people answered that the tactile sensation was excellent.

1-2. Low Gloss Feeling Twenty subjects evaluated the gloss of the decorative sheets obtained in Examples and Comparative Examples. The 20 subjects were five people each in their 20s, 30s, 40s, and 50s. Each subject visually observed the surface of the decorative sheet to determine whether or not the luster was sufficiently suppressed. The evaluation was performed under fluorescent lighting in a room where outside light was blocked. Table 1 shows the results of classifying the aggregated gloss evaluation according to the following criteria.
A: More than 18 out of 20 people answered that the gloss was low.
B: 15 or more and 17 or less out of 20 people answered that the gloss was low.
C: 11 or more and 14 or less out of 20 people answered that the gloss was low.
D: Less than 10 out of 20 people answered that the gloss was low.

1-3. Surface Shape For the decorative sheets obtained in Examples and Comparative Examples, the surface shapes of the first region on the raised portion and the second region not facing the raised portion were measured. Measurement items are "maximum height of contour curve defined in JIS B0601:2013 (Rz)", "skewness defined in ISO25178-2:2012 (Ssk)", and "defined in ISO25178-2:2012 Kurtsis (Sku)".

A shape analysis laser microscope (“VK-X1000 (control unit)/VK-X1050 (measurement unit)”, manufactured by KEYENCE CORPORATION) was used as a measuring device. The measurement conditions were as follows. A cutoff value for calculating the maximum height Rz was set to 0.8 mm. The measurement area for one measurement was 1402 μm×1051 μm. The measurement was performed 20 times, and the average value of 20 measured values obtained from the 20 measurements was used as the value of RzA, RzB, SskA, SskB, SkuA and SkuB of each example and comparative example.
<Measurement conditions>
Objective lens: 10x, Laser wavelength: 661 nm, Measurement mode: Surface shape mode, Measurement pitch: 1.6 μm, Measurement quality: High speed mode

2. Preparation of decorative material [Example 1]
A colored base paper for building materials (“CHPS45 (model number)”, basis weight: 45 g/m ² , manufactured by Tenma Tokushushi Co., Ltd.) was used as the base material. A colored layer having a thickness of 5 μm was formed by applying the resin composition to the surface of the base material that had been treated for easy adhesion by gravure printing. The resin composition contained a mixed resin of an acrylic resin and a urethane resin as a binder, and contained titanium white, red iron oxide and yellow lead as colorants. Next, a pattern layer having a wood grain pattern was formed on the colored layer using a resin composition containing nitrocellulose as a binder and a coloring agent containing red iron oxide as a main component. The wood grain pattern was a conduit groove pattern. A design layer was formed on the substrate by the colored layer and the pattern layer.

Next, the primer layer composition was applied to the entire surface of the design layer and dried to form a primer layer having a thickness of 5 μm. The primer layer composition contained a two-pack curable resin (main agent: acrylic polyol, curing agent: hexamethylene diisocyanate).

Subsequently, a raised portion composition 1 having the following formulation was applied to a part of the primer layer by gravure printing and dried to form a raised portion. The location where the raised portion was formed was substantially coincident with the location where the pattern layer was formed. A wood grain pattern was formed by the pattern layer and the raised portion. The raised portion contained a first binder resin and second particles having a first average particle diameter DA of 30 μm. The first average thickness TA of the raised portion was 30 μm.

Then, the surface protective layer composition 1 having the following formulation is applied by a roll coating method so as to cover the entire area where the raised portion is arranged and the area where the raised portion is not arranged, and electron beam (application Voltage: 175 KeV, 5 Mrad (50 kGy)) was irradiated. By the electron beam irradiation, the uncured resin layer was cured to form a surface protective layer. After that, heat curing was performed at 70° C. for 24 hours, and a decorative sheet of Example 1 was obtained. The surface protective layer contained a second binder resin and second particles having a second average particle diameter DB of 15 μm. The second average thickness TB of the surface protective layer was 8 μm.

<Casting part composition 1>
・ Two-component curing resin: 100 parts by mass (main agent: acrylic polyol, curing agent: hexamethylene diisocyanate)
・ Resin particles: 25 parts by mass (spherical polymethyl methacrylate particles)
・Solvent: Appropriate amount

<Surface protective layer composition 1>
・Electron beam curable polyfunctional acrylate resin: 100 parts by mass ・Inorganic particles: 25 parts by mass (spherical silica particles)

[Example 2]
A decorative sheet of Example 2 was produced in the same manner as in Example 1. However, the amount of surface protective layer composition 1 used was changed from that of Example 1, and a decorative sheet of Example 2 was produced.

In the decorative sheet according to Example 2, the first average thickness TA of the raised portion was 30 μm, and the first average particle diameter DA of the first particles was 30 μm. In the decorative sheet according to Example 2, the second average thickness TB of the surface protective layer was 7 μm, and the second average particle diameter DB of the second particles was 15 μm.

[Example 3]
A decorative sheet of Example 3 was produced in the same manner as in Example 1. However, a decorative sheet of Example 3 was produced by changing the amount of composition 1 for surface protective layer used and the particle size of the second particles contained in composition 1 for surface protective layer from those of Example 1.

In the decorative sheet according to Example 3, the first average thickness TA of the raised portion was 30 μm, and the first average particle diameter DA of the first particles was 30 μm. In the decorative sheet according to Example 3, the second average thickness TB of the surface protective layer was 7 μm, and the second average particle diameter DB of the second particles was 12 μm.

[Example 4]
A decorative sheet of Example 4 was produced in the same manner as in Example 1. However, the amount of composition 1 for surface protective layer used was changed from that of Example 1, and a decorative sheet of Example 4 was produced.

In the decorative sheet according to Example 4, the first average thickness TA of the raised portion was 30 μm, and the first average particle diameter DA of the first particles was 30 μm. In the decorative sheet according to Example 4, the second average thickness TB of the surface protective layer was 10 μm, and the second average particle diameter DB of the second particles was 15 μm.

[Example 5]
A decorative sheet of Example 5 was produced in the same manner as in Example 1. However, a decorative sheet of Example 5 was produced by changing the amount of composition 1 for surface protective layer used and the particle diameter of the second particles contained in composition 1 for surface protective layer from those of Example 1.

In the decorative sheet according to Example 5, the first average thickness TA of the raised portion was 30 μm, and the first average particle diameter DA of the first particles was 30 μm. In the decorative sheet according to Example 5, the second average thickness TB of the surface protective layer was 4 μm, and the second average particle diameter DB of the second particles was 12 μm.

[Comparative Example 1]
A decorative sheet of Comparative Example 1 was produced in the same manner as in Example 1. However, the amount of the composition 1 for the raised portion used, the first particles contained in the composition 1 for the raised portion, the amount of the composition 1 for the surface protective layer used, and the second particles contained in the composition 1 for the surface protective layer was changed from Example 1 to prepare a decorative sheet of Comparative Example 1.

In the decorative sheet according to Comparative Example 1, the first average thickness TA of the raised portion was 10 μm, and the first average particle diameter DA of the first particles was 12 μm. In the decorative sheet according to Comparative Example 1, the second average thickness TB of the surface protective layer was 4 μm, and the second average particle diameter DB of the second particles was 5 μm.

[Comparative Example 2]
A decorative sheet of Comparative Example 2 was produced in the same manner as in Example 1. However, a decorative sheet of Comparative Example 2 was prepared by changing the amount of the surface protective layer composition 1 used and the second particles contained in the surface protective layer composition 1 from those of Example 1.

In the decorative sheet according to Comparative Example 2, the first average thickness TA of the raised portion was 30 μm, and the first average particle diameter DA of the first particles was 30 μm. In the decorative sheet according to Comparative Example 2, the second average thickness TB of the surface protective layer was 4 μm, and the second average particle diameter DB of the second particles was 5 μm.

100: Decorative material 20: Decorative sheet 20A: Surface 30: Base material 40: Design layer 45: Primer layer 50: Mound layer 55: Mound part 56: First binder resin 57: First particle 60: Surface protective layer 61: Second 1 area 62: 2nd area 66: 2nd binder resin 67: 2nd particles D1: 1st direction D1
D2: second direction D1
D3: third direction D1

Claims (23)

a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The maximum height Rz defined in JIS B0601:2013 is 25 μm or more in the first region of the surface protective layer, and 18 μm or more in the second region of the surface protective layer,
The skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the first region of the surface protective layer and greater than 0 in the second region of the surface protective layer,
Kurtosis Sku defined in ISO25178-2:2012 is 10.0 or more in the first region of the surface protective layer and 4.0 or more in the second region of the surface protective layer. . The raised portion includes a first binder resin and first particles,
The decorative sheet according to claim 1, wherein the surface protective layer contains a second binder resin and second particles. The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
3. The decorative sheet according to claim 2, wherein the average thickness of the raised portion is larger than the average particle diameter of the second particles. The raised portion includes a first binder resin and first particles,
The decorative sheet according to claim 3, wherein the average particle size of the first particles is 0.7 times or more and 1.3 times or less the average thickness of the raised portion. a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The average thickness of the raised portion is larger than the average particle diameter of the second particles,
The raised portion includes a first binder resin and first particles,
The average particle diameter of the first particles is 0.7 times or more and 1.3 times or less as large as the average thickness of the raised portion ,
A decorative sheet , wherein the maximum height Rz defined in JIS B0601:2013 is 18 μm or more in the second region . a base material;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The average thickness of the raised portion is larger than the average particle diameter of the second particles,
The raised portion includes a first binder resin and first particles,
The average particle diameter of the first particles is 0.7 times or more and 1.3 times or less as large as the average thickness of the raised portion,
A decorative sheet, wherein the skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the second region. 7. The decorative sheet according to claim 5, wherein the maximum height Rz of the surface protective layer defined in JIS B0601:2013 is greater in the first region than in the second region. a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The average thickness of the raised portion is larger than the average particle diameter of the second particles,
The maximum height Rz of the surface protective layer defined in JIS B0601:2013 is greater in the first region than in the second region,
A decorative sheet , wherein the maximum height Rz defined in JIS B0601:2013 is 18 μm or more in the second region . a base material;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The average thickness of the raised portion is larger than the average particle diameter of the second particles,
The maximum height Rz of the surface protective layer defined in JIS B0601:2013 is greater in the first region than in the second region,
A decorative sheet, wherein the skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the second region. a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The raised portion includes a first binder resin, first particles having an average particle diameter of 10 μm or more,
including
The surface protective layer contains a second binder resin and second particles having an average particle size of 10 μm or more and 20 μm or less,
The average thickness of the raised portion is 20 μm or more,
The decorative sheet, wherein the surface protective layer has an average thickness of 3 μm or more and 15 μm or less. The decorative sheet according to any one of claims 2, 3, 4, 5, 6, 7 and 10 , wherein the average particle size of the first particles is 10 µm or more and 50 µm or less. The decorative sheet according to any one of claims 1 to 11, wherein the average thickness of the raised portion is 20 µm or more and 60 µm or less. The decorative sheet according to any one of claims 2, 3, 4, 5, 6, 7 and 10 , wherein the average particle size of the second particles is smaller than the average particle size of the first particles. The decorative sheet according to any one of claims 5 to 13 , wherein the maximum height Rz defined in JIS B0601:2013 is 25 µm or more in the first region. The decorative sheet according to any one of claims 6, 9 and 10 , wherein the maximum height Rz defined in JIS B0601:2013 is 18 µm or more in the second region. The decorative sheet according to any one of Claims 5 to 15 , wherein the skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the first region. The decorative sheet according to any one of claims 5, 8 and 10 , wherein the skewness Ssk defined in ISO25178-2:2012 is greater than 0 in the second region. The decorative sheet according to any one of claims 5 to 16 , wherein Kurtosis Sku defined in ISO25178-2:2012 is 10.0 or more in the first region. a substrate;
a surface protective layer including a first region and a second region located on the substrate;
a raised portion located between the base material and only the first region of the first region and the second region of the surface protective layer;
The surface protective layer contains a second binder resin and second particles,
The average thickness of the surface protective layer is smaller than the average particle size of the second particles,
The average thickness of the raised portion is larger than the average particle diameter of the second particles,
The kurtosis Sku defined in ISO25178-2:2012 is 10.0 or more in the first region ,
A decorative sheet , wherein the kurtosis Sku defined in ISO25178-2:2012 is 4.2 or more in the second region . The decorative sheet according to any one of Claims 5 to 18 , wherein the kurtosis Sku defined in ISO25178-2:2012 is 4.2 or more in the second region. The decorative sheet according to any one of Claims 1 to 20 , comprising a design layer located between the substrate and the surface protective layer. The decorative sheet according to claim 21 , wherein the design layer displays a wood grain pattern. The decorative sheet according to any one of claims 1 to 22 ;
and a support member that supports the decorative sheet.

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