JP2023054795A - Matte article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a matte article that has a matte effect with good visibility and texture and also has a moist feel.

SOLUTION: In at least one portion of the surface, the matte article has a surface shape in which skewness (Ssk) is less than 0.00 as defined by ISO 25178-2:2012.

SELECTED DRAWING: None

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present disclosure relates to matte articles.

Conventionally, for example, interior members of buildings such as walls, ceilings, and floors; exterior members such as outer walls, eaves, roofs, fences, and fences; , fittings or fixtures such as malls; General furniture such as chests, shelves, desks; Kitchen furniture such as dining tables and sinks; A so-called decorative material or decorative sheet is used as an article for decorating and protecting the surface of the glass. As such a decorative material, for example, a material having a surface layer having a desired function is used.

For decorative materials used in these applications, a method of improving the texture by using a matting effect (also referred to as a "mat effect") is widely used in order to improve the design. As a decorative material using a matting effect, for example, in Patent Document 1, a base sheet has a pattern layer and a concealing layer on one side, and has a gloss adjusting layer such as a matte layer or a gloss layer on the other side. A cosmetic sheet has been proposed. In the decorative sheet of Patent Document 1, the design effect of enhancing the pattern layer and the concealing layer is obtained due to the difference in gloss between the matte layer and the gloss layer of the gloss adjusting layer. For the layer, a matte ink is used in which a total of 50 parts by weight of matting agent, ie, 10 parts by weight of spherical alumina and 40 parts by weight of calcium carbonate, is added to 100 parts by weight of resin.

Patent Document 2 proposes a decorative material having a printed layer and a transparent resin layer in this order on a substrate, and an embossed pattern on the outermost surface of the transparent resin layer.

JP-A-2000-062081 JP 2011-073207 A

As a technique for improving the texture by the matting effect, a matting agent (also referred to as a "matting agent" or "matting agent") is used as in Patent Document 1 above, and the light diffusion effect of the matting agent itself is used to improve the texture. Main examples include a method for obtaining an extinguishing effect, a method for forming an uneven shape on the outermost surface by applying embossing as in Patent Document 2 above, and the like.
However, when a matting agent is used as in Patent Document 1, it is necessary to increase the amount of the matting agent to achieve a better matting effect. It falls off from the coating film and damages the coating film, resulting in a decrease in scratch resistance, and the loss of the matting agent causes a change in gloss, making the scratches more noticeable, or contamination in the minute gaps at the interface between the matting agent and the resin. The surface properties tend to deteriorate due to the penetration of substances and the adsorption of contaminants to the matting agent itself, which lowers the stain resistance. On the other hand, if the amount used is reduced in order to suppress deterioration of the surface properties, the matting effect tends to be reduced, and the surface properties and the matting effect are in a dichotomy relationship. Therefore, there is a limit to the matte effect using matting agents.
In addition, when embossing is used as in Patent Document 2, preparation of embossing plates takes a lot of time and effort and is not easy. Therefore, it cannot be said that it is a method that can sufficiently respond to the diversity of customer demands.

By the way, customer demands are diversified, and not only the above-mentioned visual matte effect but also tactile expression is required. For example, in the case of using a matting agent such as that of Patent Document 1, by increasing the amount of the matting agent used, the outline of the matting agent appears on the surface of the decorative sheet, and a somewhat rough texture is expressed. sometimes. Moreover, when embossing is used as in Patent Document 2, a tactile sensation may be developed due to the uneven shape of the surface formed by the embossing plate. However, in any case, attention is not paid to the expression of the tactile sensation, and it cannot be said that the tactile sensation is sufficiently expressed. In other words, it cannot be said that conventional decorative sheets and decorative materials are capable of achieving both excellent matting effect and tactile feel. In the present disclosure, among tactile sensations, attention is paid to a particularly “moist” tactile sensation.

An object of the present disclosure is to provide a matte article that has excellent matte effect visibility and texture, and that has an excellent moist feel.

In order to solve the above problems, the present disclosure is
A matte article having, on at least part of the surface, a surface shape with Ssk (skewness) of less than 0.00 as defined in ISO25178-2:2012;
I will provide a.

Advantageous Effects of Invention According to the present disclosure, it is possible to provide a matte article that has excellent visibility and texture of a matte effect, and also has an excellent moist feel.

FIG. 2 is a schematic diagram for explaining the surface shape of the matte article of the present disclosure; FIG. 2 is a schematic diagram for explaining the surface shape of the matte article of the present disclosure; 1 is a cross-sectional view of one embodiment of a matte article of the present disclosure; FIG. 1 is a cross-sectional view of one embodiment of a matte article of the present disclosure; FIG. 1 is a cross-sectional view of one embodiment of a matte article of the present disclosure; FIG. 1 is a schematic plan view showing an embodiment of a matte article of the present disclosure; FIG. 2 is an optical microscope image of the surface of the pattern-transferring sheet obtained in Example 1. FIG. 4 is an optical microscope image of the surface of the imprinting sheet obtained in Comparative Example 1. FIG. 4 is an optical microscope image of the surface of the article obtained in Comparative Example 2. FIG.

[Matte article]
The matte articles of the present disclosure are described below. In this specification, the numerical values related to "more than", "less than", and "to" regarding the description of numerical ranges are numerical values that can be arbitrarily combined, and the numerical values in the examples are numerical values that can be used for the upper and lower limits of the numerical range. is.

The matte article of the present disclosure is characterized by having, on at least part of the surface, a surface shape with Ssk (skewness) of less than 0.00 as defined in ISO25178-2:2012.

[About surface shape]
The surface shape (hereinafter also simply referred to as “surface shape”) that the matte article of the present disclosure has on at least a part of its surface will be described.
The surface shape must have Ssk (skewness) of less than 0.00 as defined in ISO25178-2:2012. By having such a surface shape, the matte article of the present disclosure expresses excellent visibility and texture of the matte effect, and particularly expresses a “moist” tactile sensation as a tactile sensation. Here, the "visibility and texture of matte effect" may be hereinafter simply referred to as "matte effect".

A “moist” tactile sensation is a sensual expression, but “moist” in the present specification generally includes all tactile sensations that give a “moist” feel. Specifically, it means the tactile sensation felt when touching a damp smooth surface with the pad of a finger.

Materials having a "moist" feel cannot be defined unconditionally because they can vary depending on the processing of the surface and the weaving method of the fabric described later, but for example, silk, tencel (lyocell), etc. Natural fiber fabrics, synthetic fibers such as Promix, rayon, cupra, and chemical fiber fabrics such as regenerated fibers, or these chemical fiber fabrics are peach skin processed (thin with a texture similar to the skin of peach fruit fabrics such as fabrics that have been raised). Also, for example, ceramic materials such as tiles, glass, porcelain, and enamel; stone materials such as marble and granite, among which various surface treatments such as mirror finishing; lacquered wood materials; brass, gold, silver, and copper. , metals such as aluminum, steel, and stainless steel, among others, those subjected to various surface treatments such as mirror finishing; Ceramic materials, stone materials, wood-based materials, and metals may lose their "moist" feel depending on their surface processing, but it goes without saying that such processed materials are not included.
Therefore, the matte article of the present disclosure is preferably used in applications where it is desired to express designs on these fabrics, ceramic materials, stone materials, wood-based materials, metal surfaces, and the like. In this case, the matte article of the present disclosure preferably has a decorative layer having a pattern on the surface of fabric, ceramic material, stone, wood-based material, metal, etc., so as to express the desired design. Details of the decorative layer that the matte article of the present disclosure may have will be described later.

Ssk (skewness) is one of the three-dimensional surface texture parameters defined by the ISO, and is an index indicating the degree of deviation of height distribution from the average surface. When Ssk is 0, the surface shape is symmetrical with respect to the average plane. It is a measured value that can be grasped that the vicinity of the top tends to be sharp and thin. Here, "symmetrical with respect to the mean plane" can also be referred to as "normal distribution".

On the other hand, when Ssk is less than 0, the surface shape is biased toward the upper side, ie, the higher side, with respect to the average surface. The tendency of the surface shape represented by Ssk (skewness) will be described with reference to FIG.
FIG. 1 is a schematic diagram of when Ssk (skewness) is less than 0 (1-1) and when it exceeds 0 (1-2). The Ssk (skewness) of the surface shape in the present disclosure being less than 0.00 indicates that the surface tends to have the shape shown in (1-1). That is, since the surface shape is biased upward with respect to the average surface, the surface shape above the average surface, that is, on the matte surface side of the present disclosure, has a wide width to the height and a low aspect ratio. It can be said that there are many protrusions having a cross-sectional shape close to a rectangle (trapezoid), and that the protrusions are closely distributed. Here, in FIGS. 1 and 2, the “average surface” is the average level surface corresponding to the horizontal line, and the “below the average surface” is the lower side in FIGS. It can also be said that it is the outer surface side.

Due to the surface shape having such a shape, the contact area is large when touched with the pad of the finger, so that it feels stuck, which leads to the tactile sensation that you feel when you touch a moist and smooth surface. it is conceivable that. In addition, it is considered that the presence of such a convex portion results in relatively having a concave portion between the convex portions, so that a matting effect is also obtained. The details of the expression of the matte effect will be described later.

Ssk (skewness) is preferably −0.10 or less, more preferably −0.25 or less, still more preferably −0.45 or less, and the lower limit is preferably −3.00 or more, preferably −2 0.00 or greater, more preferably −1.50 or greater, and even more preferably −1.30 or greater. When the Ssk (skewness) is within the above range, the matte effect and moist touch are improved.

The measurement of Ssk (skewness) is a measurement value measured using a shape analysis laser microscope for a rectangle (1024 μm × 768 μm) at an arbitrary part of the surface shape of the matte article, and the measurement conditions can be adjusted as appropriate. For example, it can be measured under the conditions described in Examples. In addition, Sku (kurtosis), which will be described later, and Rsm (average length of curve element), Rz (maximum height), and Ra (arithmetic mean roughness) related to contour curves can also be measured in the same manner.

In the present disclosure, the surface shape preferably has a Sku (kurtosis) of 3.00 or more as defined in ISO25178-2:2012.
Sku (kurtosis) is one of the three-dimensional surface texture parameters defined by the above ISO, and is an index indicating the degree of sharpness of height distribution from the average surface. When Sku is 3, the surface shape is symmetrical (normal distribution) with respect to the average plane, when Sku exceeds 3, the height distribution has a sharp shape, and when Sku is less than 3, the height distribution is It is a measured value that can be grasped that there is a tendency to have a collapsed shape. The shape tendency exhibited by the surface shape indicated by Sku (Kurtosis) will be described with reference to FIG. FIG. 2 is a schematic diagram of Sku (kurtosis) exceeding 3.000 (2-1) and less than 3.00 (2-2). The fact that the Sku (kurtosis) of the surface shape in the present disclosure is 3.00 or more means that the surface shape has the shape shown in (2-1), the height part before and after the average height is the largest, and the average height It shows that the height distribution is such that there are few portions where the height protrudes more than the height and where the height falls more than the average height. Although the tip shape of the convex portion existing above the average plane has a sharp shape, it can be said that the number thereof is small.

In the surface shape that satisfies the above Ssk (skewness), if Sku (kurtosis) is 3.00 or more, tip-shaped projections and tip-shaped projections on the convex region that has a low aspect ratio shape with a wide width to height A small number of concavities with narrow bottoms (acute angles) are scattered. Therefore, the contact area when touched with the ball of a finger does not spread over the entire surface like a simple flat surface (mirror surface). In addition, the protruding portions and recessed portions that are scattered moderately divide and become smaller, so that the degree of engagement with the pad of the finger is within a moderate range. As a result, the moist texture is improved, and the matting effect is also improved.

Sku (kurtosis) is preferably 3.05 or more, more preferably 3.10 or more, still more preferably 3.15 or more, and the upper limit is preferably 5.50 or less, more preferably 5.25 or less, and still more preferably is 5.00 or less. When the Sku (kurtosis) is within the above range, the matte effect and moist touch are improved.

The surface shape of such a matte article has Ssk (skewness) within the above specific numerical range, preferably Ssk (skewness) and Sku (kurtosis) within the above specific numerical range, and Rsm (mean of curve elements) described later. length), Rz (maximum height), and Ra (arithmetic mean roughness), and preferably have fine wrinkles (wrinkles) visible in a plan view shown in FIG. 6 to be described later.

Regarding the surface shape of the matte article of the present disclosure, Ssk (skewness), preferably Ssk (skewness) and Sku (kurtosis), etc. tend to be within a specific numerical range due to having the minute wrinkles (wrinkles). , The fine wrinkles (wrinkles) are easily formed by having Ssk (skewness) within a specific numerical range, preferably Ssk (skewness) and Sku (kurtosis) within a specific numerical range. Thus, it can be said that Ssk (skewness) and preferably Sku (kurtosis) and the like and minute wrinkles (wrinkles) are inextricably linked. By having such a surface shape, the matting effect is improved along with the moist feel.

In the surface shape of the matte article, Ssk (skewness) within the above specific numerical range, preferably Ssk (skewness) and Sku (kurtosis) within the above specific numerical range, and further Rsm (average length of curve element ), Rz (maximum height) and Ra (arithmetic mean roughness),
(1) forming a fine wrinkle structure on the surface of the matte layer;
is preferred. moreover,
(2) Composition formulation of the resin composition for forming the matte layer, especially the type of polymerizable monomer and polymerizable oligomer, the number of functional groups, the molecular weight, the presence or absence of a wrinkle-forming stabilizer, and the wrinkles when using a wrinkle-forming stabilizer optimizing the particle size and content of the forming agent;
(3) optimizing the irradiation conditions of the resin composition for matting formation, especially the wavelength of light with a wavelength of 100 nm or more and 380 nm or less that can cause curing shrinkage of the surface portion of the matte layer, the integrated weight, the ultraviolet power density, etc.
(4) In addition to the above, optimize the type and thickness of the base material, the thickness of the matte layer, etc.
is preferred. By optimizing these, for the surface shape of the matte article of the present disclosure, Ssk (skewness) is set within the above specific numerical range, preferably Sku (kurtosis), Rsm (average length of curvilinear element) described later , Rz (maximum height) and Ra (arithmetic mean roughness) are easily set within predetermined numerical ranges.

In the present disclosure, as the surface shape, Rsm (average length of curve element), which is a lateral parameter of the contour curve defined in JIS B0601:2013, is preferably 100.00 μm or less.
Rsm (mean length of the curve element) is the lateral parameter of the profile and is the average length of the profile elements at the reference length. The smaller the numerical value of Rsm (average length of curvilinear element), the narrower the width of the protrusions, which is an index indicating that the surface shape tends to have narrower protrusions. Therefore, in a surface shape that satisfies the above Ssk (skewness), when Rsm (average length of curvilinear elements) is 100.00 μm or less, the width of the protrusions of the surface shape becomes narrower, and the width of the convex portion of the surface shape becomes narrower. By reducing the contact area when it is touched, the degree of hooking becomes appropriate, and the moist touch is improved. Moreover, the matting effect is also improved.

Rsm (average length of curvilinear element) is preferably 90.00 μm or less, more preferably 80.00 μm or less, even more preferably 65.00 μm or less, still more preferably 55.00 μm or less, and the lower limit is preferably 20 00 μm or more, more preferably 25.00 μm or more, and still more preferably 30.00 μm or more. When RSm (average length of curvilinear elements) is within the above range, the matte effect and moist touch are improved.
Note that the cutoff value for measuring Rsm (average length of curvilinear element) in this specification is 0.8 mm.

In the present disclosure, as the surface shape, Rz (maximum height), which is a lateral parameter of the contour curve defined in JIS B0601:2013, is preferably 3.00 μm or more.
Rz (maximum height) is one of the peak and height parameters of the contour curve, and is the sum of the height of the highest peak and the depth of the deepest valley in the contour curve at the reference length. The larger the numerical value of Rz (maximum height) is, the larger (higher) the shape of the protrusions are when viewed from the valley, which is an index indicating that there tends to be many such protrusions. Therefore, in the surface shape that satisfies the above Ssk (skewness) and Sku (kurtosis), when Rz (maximum height) is 3.00 μm or more, the shape is large when viewed from the valley when touched with the pad of the finger ( (high) increases the resistance due to each convex part, so the moist touch is improved. Moreover, the matting effect is also improved.

Rz (maximum height) is preferably 3.50 µm or more, more preferably 4.00 µm or more, still more preferably 4.50 µm or more, still more preferably 4.80 µm or more, and the upper limit is preferably 15.00 µm or less. , more preferably 13.50 μm or less, still more preferably 11.00 μm or less, and even more preferably 10.00 or less. When the Rz (maximum height) is within the above range, the matting effect and moist touch are improved.
Note that the cutoff value for the measurement of Rz (maximum height) in this specification is 0.8 mm.

In the present disclosure, the surface profile preferably has Ra (arithmetic mean roughness) of 2.00 μm or less, which is a lateral parameter of the contour curve defined in JIS B0601:2013.
Ra (arithmetic mean roughness) is one of the parameters in the height direction of the profile curve, and is the average value of the difference in height from the average plane in the profile curve at the reference length. The smaller the numerical value of Ra (arithmetic mean roughness), the smaller the projections in the surface shape and the smaller the recesses formed accordingly, which is an index indicating that the surface tends to have a smoother and more uniform shape. Therefore, in a surface shape that satisfies the above Ssk (skewness) and Sku (kurtosis), when Ra (arithmetic mean roughness) is 2.00 μm or less, the shape of the convex portions of the surface shape becomes more uniform and gentle. is present in a larger amount, the erratic touch is suppressed, and especially the moist touch is improved. Moreover, the matting effect is also improved.

Ra (arithmetic mean roughness) is preferably 1.95 μm or less, more preferably 1.90 μm or less, still more preferably 1.80 μm or less, and the lower limit is preferably 0.10 μm or more, more preferably 0.40 μm or more. and more preferably 0.60 μm or more. When Ra (arithmetic mean roughness) is within the above range, the matte effect and moist touch are improved.
In addition, in measuring Ra (arithmetic mean roughness) in this specification, the cutoff value is 0.8 mm.

[Regarding layer structure]
The matte article of the present disclosure is not particularly limited in the layer structure as long as it has a shape defined by the above parameters as a surface shape, and any layer structure may be adopted.
For example, the simplest layer construction that the matte article of the present disclosure has is a single layer construction as shown in FIG. As the article shown in FIG. 3, for example, in a cured product layer of a resin composition, preferably a cured product layer of a curable resin composition containing a curable resin such as an ionizing radiation curable resin described later, Articles having the above-mentioned surface shape on the surface, or articles composed of a single layer such as an article having a surface shape formed by subjecting the surface of a resin molded product to processing such as embossing may be mentioned.

In addition, from the viewpoint of flexibly responding to various demands such as mechanical strength of the article, post-processing suitability, design appearance, etc., and from the viewpoint of manufacturing suitability, use handling suitability, etc. A laminate formed by laminating a plurality of layers such as a substrate, and at least a part thereof having the above surface shape, for example, a laminate having a cured product layer of a resin composition as a matte layer. Goods are also included.
Hereinafter, with respect to each layer constituting the matte article of the present disclosure, the article composed of a laminate, which is one of the preferred embodiments, will be described with respect to a substrate and a cured product layer (glossy A layer constituting a laminate having a non-dissolving layer) will be described.

〔Base material〕
The substrate that forms the matte article of the present disclosure is not particularly limited in its form (or shape), for example, from various shapes such as film, sheet or plate, polyhedron, polygonal prism, cylinder, sphere, and spheroid It can be preferably adopted. Here, films, sheets and plates are referred to as films, sheets and plates according to their relatively thin thickness, but in the present specification there is no particular significance in strictly distinguishing between these three. , sheet and board differences shall not lead to any difference in the interpretation of rights of this disclosure. Therefore, in this specification, films, sheets, and plates are sometimes collectively referred to as "sheet", "sheet-like", and the like.
When the matte article of the present disclosure is composed of a laminate, the shape of the substrate is preferably sheet-like. When the substrate is in the form of a film, it is particularly easy to form a matte layer, which will be described later, so that production aptitude is improved.

The constituent material of the base material is not particularly limited, and various materials such as resins, metals, non-metallic inorganic materials, fibrous materials, and woody materials can be appropriately selected according to the application. A base material composed of these various materials can be used as a single layer, or a plurality of layers in which two or more layers of base materials composed of these various materials are combined. In the case of multiple layers, two or more layers of different materials can be laminated and integrated to complement each other's functions of the materials of each layer.

When a multi-layer substrate is employed, each layer constituting the multiple layers, for example, a layer made of material A and a layer made of material B are laminated to form a laminate "A / B". When notating;
(1) Resin/wood material (2) Resin/metal (3) Resin/fibrous material (4) Resin/non-metallic inorganic material (5) Resin 1/resin 2 (for example, "olefin resin/acrylic resin" etc. If you have multiple layers composed of different resins)
(6) Metal/wood-based materials (7) Metal/non-metallic inorganic materials (8) Metal/fibrous materials (9) Metal 1/metal 2 (for example, multiple metals composed of different metals such as "copper/chromium" layer)
(10) Preferred examples include non-metallic inorganic materials/fibrous materials.
When the substrate has multiple layers, an adhesive layer, a pressure-sensitive adhesive layer, a primer layer (both anchor layer and easy-adhesion layer) may be added between each layer to improve the adhesion of adjacent layers. ) may be further included.

Various synthetic resins, natural resins and the like can be used as resins that can be used for the base material. Synthetic resins include thermoplastic resins and curable resins, and thermoplastic resins are preferred in consideration of suitability for production of matte articles, suitability for handling, suitability for post-processing, and the like.

Thermoplastic resins include olefin resins such as polyethylene, polypropylene, polymethylpentene, ionomers, and various olefin-based thermoplastic elastomers; vinyl chloride resins such as polyvinyl chloride, polyvinylidene chloride, and vinyl chloride-vinyl acetate copolymer; polyethylene Polyester resins such as terephthalate, polybutylene terephthalate, polyethylene naphthalate, ethylene glycol-terephthalic acid-isophthalic acid copolymer, polyester thermoplastic elastomer; poly(methyl) acrylate, poly(meth)ethyl acrylate, poly( acrylic resins such as butyl methacrylate and methyl (meth)acrylate-butyl (meth)acrylate copolymer; polyamide resins such as nylon 6 and nylon 66; cellulose triacetate, cellophane, celluloid and the like Resin; Styrene resin such as polystyrene, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer (ABS resin); Polyvinyl alcohol, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polycarbonate resin , polyarylate resins, and polyimide resins.
Preferred natural resins include natural rubber, pine resin, amber, and the like.
Moreover, as the curable resin, a thermosetting resin, an ionizing radiation curable resin, and the like, which are exemplified as constituent materials of the later-described matte layer, are preferably exemplified.

Examples of metals that can be used for the substrate include aluminum and aluminum alloys such as duralumin; iron and iron alloys such as iron, carbon steel and stainless steel; copper and copper alloys such as copper, brass and bronze; gold and silver. , chromium, nickel, cobalt, tin, and titanium. Moreover, as the base material composed of metal, those having the surface thereof coated with such metal by plating or the like are also preferably exemplified.

Examples of non-metallic inorganic materials that can be used for the base material include non-ceramic ceramic materials such as cement, ALC (light cellular concrete), gypsum, calcium silicate, and wood chip cement; ceramic ceramics such as ceramics, earthenware, glass, and enamel. Materials: Natural stones such as limestone (including marble), granite and andesite are preferred.

Examples of fibrous materials that can be used for the base material 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 gypsum board. Paper such as base paper; woven fabrics or non-woven fabrics made of fibers such as polyester resin fibers, acrylic resin fibers, proteins such as silk, cotton and hemp, natural fibers such as cellulose, glass fibers and carbon fibers are preferred. Among these materials, in order to improve the interlaminar strength between the fibers of the paper base material composed of paper or with other base materials used in combination with the paper base material, and to prevent fluffing, acrylic resins, Various resins such as styrene-butadiene rubber, melamine resin, and urethane resin may be added (impregnated with these resins after paper making or incorporated during paper making). As the resin-added paper, for example, inter-paper reinforced paper, resin-impregnated paper, and the like are preferably used.
In addition, as a laminate obtained by laminating a layer composed of a fibrous material and a layer composed of a resin, a vinyl chloride resin layer and an olefin resin are added to the surface of wallpaper backing paper commonly used in the field of building materials. Preferred examples include wallpaper raw fabrics in which layers composed of various resins such as layers and acrylic resin layers are laminated.

Examples of woody materials that can be used as the base material include veneers, plywoods, laminated lumbers, and the like, which are composed of various types of wood such as cedar, cypress, pine, zelkova, oak, oak, walnut, lauan, teak, and rubber trees. Particle board, medium density fiber board (MDF), etc. are preferably mentioned.

As the base material, any base material composed of the materials described above can be used without limitation, and the material may be appropriately selected according to desired properties and the like. From the viewpoint of improving the matte effect and moist touch, a base material composed of a resin or a fibrous material is preferable, and a base material composed of a resin is more preferable. Among resins, olefin resins, vinyl chloride resins, polyester resins, and acrylic resins are preferable, olefin resins, vinyl chloride resins, and polyester resins are more preferable, polyethylene and polypropylene are preferable as olefin resins, and polyvinyl chloride is preferable as vinyl chloride resins. Polyethylene terephthalate is preferred as the polyester resin. As the resin used for the substrate, polyester resins are preferable among these, and polyethylene terephthalate is particularly preferable. Moreover, among fibrous materials, paper is preferable. By using a base material composed of these materials, it is particularly easy to obtain the surface shape described above, and it is easy to improve the moist touch.

The shape and dimensions of the single-layer or laminate substrate are not particularly limited, and may be appropriately selected in consideration of the intended use, desired properties, post-processing suitability, and the like.
When adopting the shape of a film, sheet or plate, the thickness is a typical design dimension of the matte article, but the thickness is not particularly limited, and the suitability for manufacture, suitability for use and handling, suitability for post-processing, and mechanical Considering the strength, economy, etc., the thickness should preferably be selected from the range of 10 μm or more and 10 cm or less. When adopting the shape of a film or sheet, it is preferably selected from the range of 20 μm or more and 300 μm or less, and when adopting the shape of a plate, it is preferably selected from the range of 1 mm or more and 2 cm or less.

From the viewpoint of improving the adhesion with other layers such as the later-described matte layer that constitutes the matte article, and the adhesion with the adherend such as a resin molded article on which the matte article is laminated, At least one surface thereof can be subjected to a physical surface treatment such as an acid value method or roughening method, or a surface treatment such as a chemical surface treatment for improving easy adhesion.
Examples of oxidation methods include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone-ultraviolet treatment, and the like. Examples of roughening methods include sandblasting and solvent treatment. These surface treatments may be appropriately selected according to the type of base material, and corona discharge treatment is preferred from the viewpoint of the effect of improving easy adhesion by surface treatment, workability, and the like.

The substrate may be colored or may not be colored (it may be transparent), and when colored, the mode of coloring is not particularly limited, and may be transparently colored, Opaque coloring (concealing coloring) may be used, and these can be selected arbitrarily.

When the substrate is colored, examples of coloring agents include white pigments such as titanium white, inorganic pigments such as iron black, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine blue, and cobalt blue; quinacridone red. , isoindolinone yellow, phthalocyanine blue, nickel-azo complexes, azomethine azo black pigments, perylene black pigments, and other organic pigments or dyes; metal pigments made of scale-like foil pieces such as aluminum and brass; titanium dioxide-coated mica, bases coloring agents such as pearl luster (pearl) pigments composed of scaly foil pieces such as organic lead carbonate. For example, when the surface hue of an adherend such as a resin molded article laminated with a matte article varies, it is desired to conceal the surface hue and improve the stability of the color tone of the decorative layer provided as desired. may use an inorganic pigment such as a white pigment.

When coloring a base material with a resin, any means such as adding (kneading or kneading) a coloring agent into the resin, or forming a coating film of a paint containing a resin and a coloring agent, should be adopted. can be done. When a base material made of fibrous material such as paper, woven fabric, or non-woven fabric is to be colored, it can be carried out by any means such as mixing with pulp or fibrous material, forming a coating film, or the like, or a combination thereof.
When coloring a base material made of a wood-based material, it can be carried out by dyeing with a dye, coating film formation, or a combination of these methods. In the case of coloring a substrate made of metal, in addition to coating film formation, an electrolytic coloring method or the like can be employed in which a metal oxide film is formed on the surface using an anodizing method. In addition, when the base material is colored with a non-metallic inorganic material, it can be carried out by either means of forming a coating film or adding it to the base material, or a combination of these means.

Additives may be added to the base material, if necessary. Additives, mainly in the case of resins, include, for example, inorganics such as calcium carbonate and clay, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, antioxidants, ultraviolet absorbers, and light stabilizers. etc. The amount of the additive compounded is not particularly limited as long as it does not impair the surface characteristics, processing characteristics, etc., and can be appropriately set according to the required characteristics.

From the viewpoint of improving the weather resistance of the matte article of the present disclosure, it is preferable to use weather resistance agents such as ultraviolet absorbers and light stabilizers among the above additives.
Examples of the ultraviolet absorber and light stabilizer include those exemplified as those that can be contained in the later-described matte layer.
These ultraviolet absorbers, weathering agents such as light stabilizers, and other various additives can be used alone or in combination.

In the present disclosure, the above substrates may be used singly or in combination. A combination of a plurality of paper substrates may be used, or a paper substrate and a fiber substrate, a paper substrate and a resin substrate, a fiber substrate and a resin substrate, a paper substrate, a fiber substrate and a resin substrate. It may be a combination of materials. In addition, the resin base material may be composed of a single layer of the above resin base material, or a multilayer structure of the same or different resins.

The thickness of the substrate is as described above. Considering mechanical strength, economic efficiency, etc., it is more preferably 40 μm or more, and the upper limit is more preferably 200 μm or less, and further preferably 100 μm or less.
For the same reason, when the substrate is paper, the basis weight is generally preferably 20-150 g/m ² , more preferably 30-100 g/m ² .

[Matte layer]
The matte layer in the matte article of the present disclosure is a layer that is provided on at least a portion of the above substrate and has the above surface profile, that is, a surface profile with an Ssk (skewness) of less than 0.00. Also, as shown in FIG. 4, the layer is provided such that the surface having the surface shape is the surface opposite to the substrate side.
Therefore, the matte article of the present disclosure preferably includes a matte layer and has a configuration in which the surface shape is formed by the surface of the matte layer. The layer is preferably a layer composed of a cured product of a resin composition, preferably a cured product of a curable resin composition containing a cured resin.

As the resin composition for forming the matte layer, a resin composition containing a resin and a wrinkle-forming stabilizer ( Hereinafter, it may be referred to as "a resin composition for forming a matte layer".) is preferable. That is, the matte layer in the present disclosure is preferably a layer containing a resin and a wrinkle stabilizer.

(wrinkle-forming stabilizer)
The wrinkle-forming stabilizer stabilizes the formation of wrinkles on at least one surface of the matte layer, thereby uniformly matting the entire surface of the matte layer that forms the surface shape of at least a part of the surface of the matte article. Visibility of the effect is expressed, partial gloss unevenness is reduced, stable visibility of the matte effect, and uniformity of the surface condition by stably forming wrinkles over the entire surface of the matte layer It has the function of giving The wrinkles formed in the matte layer greatly contribute to the development of a moist feel. In the present specification, the expression "visibility of stable matting effect" and similar expressions may be used hereinafter for "visibility of stable matting effect". Also, "uniformity of surface condition" may be referred to as "texture".
Therefore, the so-called "matting agent" in the prior art and the "wrinkle-forming stabilizer" in the present disclosure have the same matting mechanism (action) even if the constituent substances and the average particle size are the same. , the relationship between the structure for expressing matte, the amount used, and the degree of surface gloss (gloss value). It also differs from the "matting agent" in that it develops a moist feel by forming wrinkles.

Matting agents that have been used for matte expression in the prior art such as the above-mentioned Patent Document 1 express the visibility of the matting effect themselves due to the light diffusion effect caused by the physical shape. is. Specifically, what is generally called a matting agent generally has a refractive index difference between the matting agent particles and the surrounding resin and air, and the light reflection and refraction properties corresponding to the contour shape of the particles The visibility of the matte effect is expressed by the light diffusion effect of the interface. On the other hand, in the matte article of the present disclosure, the wrinkle stabilizer is not due to the light diffusion due to the reflection and refraction of light rays by the particles themselves, but the visibility of the matte effect is caused by the wrinkle stabilizer. By stabilizing the formation of wrinkles on the surface of the matte layer, the light diffusion effect at the interface between the surface and air with a difference in refractive index stably imparts the visibility and texture of the matte effect to the matte article. It is a thing. Therefore, even if the wrinkle-forming stabilizer used in the present disclosure is the same as the matting agent that itself exhibits the visibility of the matting effect, even if both constituent substances and average particle sizes are the same, both are different from each other in terms of the matting mechanism and action, the structure for developing the matting effect, and the like.
Furthermore, the "wrinkle-forming stabilizer" and the "matting agent" also differ in the relationship between the content and surface luster (gloss value). 60° gloss value G _60° ^AW (C) of the surface when the same substance A is used as a wrinkle-forming initiator AW (W: wrinkles) and this is contained in a specific amount C to form wrinkles on the surface is clearly lower than the 60° gloss value G _60° ^AM (C) of the surface when the same substance A is used as a mere matting agent AM and this is contained in a specific amount C, but no wrinkles are formed on the surface. . That is, the following relational expression holds.
G _60° ^AW (C) < G _60° ^AM (C)

The matte layer in the matte article of the present disclosure may contain an agent that has been conventionally used as a matte agent. Considering the characteristics of the effect of the present invention that a moist feeling is obtained, it is preferable that the matting agent is not contained. Thus, the matte article of the present disclosure has excellent matte effect visibility and texture without substantially containing matting agents conventionally used to obtain matte effect visibility. It can be said that it has Here, "does not contain a matting agent" means not containing a matting agent at all, and even if it does contain a matting agent, it does not have the visibility of the matting effect based on the action and effect of the matting agent itself. Specifically, it means that the content of the matting agent is less than 15.0 parts by mass, preferably 10.0 parts by mass or less, more preferably 3.0 parts by mass or less per 100 parts by mass of the resin. .
In the specification of the present application, the "matting agent" specifically refers to a layer that can contain the matting agent, that is, the thickness of the matting layer, from the viewpoint of forming convex portions by the effect of cueing as described above. means particles having an average particle size with a lower limit of greater than 100% of the height and greater than 30 μm, whichever is smaller.

In the present disclosure, the wrinkle-forming stabilizer is not a matting agent, and is particularly limited as long as the average particle size is 100% or less of the matte layer thickness or 30 μm or less, whichever is smaller. can be used without
In consideration of improving the matte effect and moist touch, the average particle size of the wrinkle-forming stabilizer having an upper limit of 100% or less of the thickness of the matte layer or 30 μm or less, whichever is smaller, is It is preferred to use at least one of two types of wrinkle-forming stabilizers that are distinguished by diameter. Specifically, the two types of wrinkle-forming stabilizers have an average particle size of 1 μm or more and a wrinkle-forming stabilizer 1 whose upper limit is the smaller of 100% or less of the thickness of the matte layer and 30 μm or less. and wrinkle stabilizer 2 having an average particle size of less than 1 μm.

In the present disclosure, when at least one of the two wrinkle-forming stabilizers is used, wrinkle-forming is stabilized, a stable and excellent matting effect is obtained, and a moist touch is also obtained. Considering the improvement of matte effect and moist feel, it is more preferable to use wrinkle-forming stabilizer 2 alone, or to use wrinkle-forming stabilizer 1 and wrinkle-forming stabilizer 2 together.

As the wrinkle-forming stabilizer, for example, organic particles or inorganic particles can be used.
Organic substances constituting organic particles include polymethyl methacrylate, acrylic-styrene copolymer resin, melamine resin, polycarbonate, polystyrene, polyvinyl chloride resin, benzoguanamine-melamine-formaldehyde condensate, silicone, fluorine-based resin and polyester-based resin. etc.
Inorganic substances constituting the inorganic particles include silica, alumina, calcium carbonate, aluminosilicate, barium sulfate, and the like. Among these, silica is preferred because of its excellent transparency.

The shape of the wrinkle-forming stabilizer is not particularly limited, and examples thereof include spherical, polyhedral, scaly, and irregular shapes.

The upper limit of the average particle size of the wrinkle-forming stabilizer 1 is 1 μm or more and 100% or less of the thickness of the matte layer or 30 μm or less, whichever is smaller. Considering stably improving the matting effect and improving the moist touch, the average particle size of the wrinkle-forming stabilizer 1 is preferably 1.3 μm or more, more preferably 1.5 μm or more, and still more preferably 1.5 μm or more. It is 1.8 μm or more, and the upper limit is preferably 90% or less of the thickness of the matte layer, more preferably 80% or less of the thickness of the matte layer, and further It is preferably 70% or less of the thickness of the matte layer. Any combination of the upper limit of the thickness and the upper limit of the absolute value may be set to the smaller one. For example, the upper limit may be 90% or less of the matte layer thickness or 20 μm or less, whichever is smaller, or the smaller one of 90% or less and 10 μm or less of the matte layer thickness may be the upper limit. can also The thickness of the matte layer will be described later.

The average particle size of wrinkle stabilizer 2 is less than 1 μm. Considering stabilizing the formation of wrinkles, stably improving the matting effect, and improving the moist touch, the average particle size of the wrinkle-forming stabilizer 2 is preferably 1 nm or more, more preferably 3 nm or more. , more preferably 5 nm or more, and the upper limit is preferably 900 nm or less, more preferably 700 nm or less, and still more preferably 500 nm or less.
In the present specification, the average particle size of the wrinkle-forming stabilizer is measured as the mass average value d50 in particle size distribution measurement by laser light diffraction method.

Considering stabilizing the formation of wrinkles by the wrinkle-forming stabilizer, stably improving the matting effect, and improving the moist touch, the wrinkle-forming stabilizer (wrinkle-forming stabilizer 1 and wrinkle-forming stabilizer 2 The total content of these when used in combination) is preferably 0.5 parts by mass or more, more preferably 0.75 parts by mass or more, relative to 100 parts by mass of the resin forming the matte layer. It is more preferably 1.0 parts by mass or more, and still more preferably 1.2 parts by mass or more. On the other hand, the upper limit of the .0 parts by mass or less. The upper limit is not particularly limited in terms of improving the stable matte effect and moist touch, but if the upper limit is within the above range, for example, the coating properties of the resin composition for forming a matte layer The productivity of the decorative material by, etc., and the visibility and texture of the matting effect are efficiently improved.

When the wrinkle-forming stabilizer 1 and the wrinkle-forming stabilizer 2 are used in combination, the content of each of the wrinkle-forming stabilizer 1 and the wrinkle-forming stabilizer 2 is not particularly limited as long as the total content is within the above range. However, the content of the wrinkle-forming stabilizer 2 is preferably 0.1 parts by mass or more, more preferably 0.5 parts by mass or more, and still more preferably 1.0 parts by mass or more with respect to 100 parts by mass of the resin. , the upper limit is preferably 10.0 parts by mass or less, more preferably 7.5 parts by mass or less, still more preferably 5.0 parts by mass or less, and even more preferably 3.5 parts by mass or less. Further, the blending ratio of the wrinkle-forming stabilizer 1 and the wrinkle-forming stabilizer 2 is preferably 0.05 to 0.95 as the blending amount of the wrinkle-forming stabilizer 1 when the total amount of these is 100 parts by mass. parts by mass, more preferably 0.10 to 0.90 parts by mass, still more preferably 0.20 to 0.80 parts by mass, and even more preferably 0.30 to 0.70 parts by mass.

As the wrinkle-forming stabilizer, organic particles and inorganic particles can be used as described above. Matting agents such as spherical alumina and calcium carbonate are used in the matte layer of the decorative sheet described in 1 above. In order for matting agents such as spherical alumina and calcium carbonate to express the visibility of the matting effect themselves due to the light diffusion effect resulting from their physical shape, as described in Patent Document 1, It is necessary to use 10 parts by weight of spherical alumina and 40 parts by weight of calcium carbonate in a total amount of about 50 parts by weight per 100 parts by weight of resin. However, in the present disclosure, even if the content is small as described above, that is, the content necessary for expressing the visibility of the matte effect itself due to the light diffusion effect caused by the physical shape Even with a smaller content, an extremely excellent matting effect is obtained compared to the effect obtained by the matting agent, and a moist touch is also obtained. Therefore, the matte article of the present disclosure stably forms wrinkles on the surface even though it does not substantially contain a matting agent. It can be said that the visibility of the erasing effect is stably obtained, and at the same time, a texture is obtained, and a moist touch is also obtained.

(Surface shape of matte layer)
The matte layer in the matte article of the present disclosure is a layer having the surface shape described above, preferably a cured product of a resin composition for forming a matte layer containing the specific wrinkle-forming stabilizer in a specific content. It is a layer composed of As described above, by stabilizing the formation of wrinkles on the surface of the matte layer, the matte effect is stably expressed by the light diffusion effect caused by the shape of the wrinkles, and the layer also expresses a moist touch. . FIG. 6 is a schematic plan view showing one embodiment of the matte article of the present disclosure, which is a schematic image of the surface of the matte article obtained in the example. FIG. 6 shows that the matte article of the present disclosure has wrinkles on its surface, ie, the surface of the matte layer. Here, “planar view” means viewing the surface of the matte article from the positive direction of the Z-axis in the XYZ coordinate system shown in FIGS.

Wrinkles appearing on at least one surface of the matte layer are determined by the above surface shape, that is, Ssk (skewness) within the above specific numerical range, preferably Ssk (skewness) and Sku (kurtosis), and other Rsm (curve There is no particular limitation as long as it exhibits a surface shape having the average length of the element), Rz (maximum height), and Ra (arithmetic mean roughness). Formation is stabilized by the wrinkle-forming stabilizer, and a matting effect is stably exhibited, and a moist touch is also exhibited.
With respect to wrinkles, at least one surface of the matte layer should have an uneven shape composed of irregular wrinkles from the viewpoint of expressing the above surface shape, improving the matting effect, and improving the moist touch. Preferably, the irregular wrinkles are composed of a plurality of protrusions formed by a plurality of protrusions and a recess formed by being surrounded by the plurality of protrusions. It is preferable to have projections. As used herein, the term “striated projection” (hereinafter also referred to as “striated projection”) means that the ratio of the length to the width of the projection (length/width) is 3 or more, preferably 5 More preferably, it means 10 or more, and the method for determining the length and width will be described later.
In the present disclosure, the more preferable irregular wrinkles are composed of a plurality of protrusions formed by the plurality of filamentary protrusions and recesses formed by being surrounded by the plurality of filamentary protrusions.

Examples of aspects relating to these wrinkles include the aspect shown in FIG. 6 . FIG. 6 shows that the surface of the matte article, that is, the surface of the matte layer, has irregular wrinkles in plan view, and the irregular wrinkles are formed by a plurality of curved filamentary protrusions. and a recess 2 formed by being surrounded by a plurality of protrusions (plurality of protrusions 3), and at least part of the plurality of protrusions 3 that are curved. However, it is also shown that each is formed by meandering filamentary projections, and that a meandering recess 2 is formed so as to be surrounded by the meandering filamentous projections. The matte article of the present disclosure stably exhibits a matte effect due to the stable formation of wrinkles shown in FIG. 6, and also exhibits a moist feel.

Here, “curved” means having one or more portions in which the extending direction of the continuous filamentary projections 3 is reversed from one side to the other side in plan view. As an example of the portion where the extending direction is reversed from one side to the other side, for example, when the width of the planar view shape of the filament protrusion 3 is ignored (when the planar view shape width is regarded as 0) is approximated by a continuous curve, a form having an inflection point, and the like. In addition, when approximating with a straight line when ignoring the width of the planar view shape of the protrusion 3 of the filament, a form having a portion approximated by two sides sandwiching one vertex of a V-shaped broken line or triangle etc.
In addition, the term "meandering" refers to a portion where the extending direction of the continuous linear projections 3 is reversed from one side to the other side (hereinafter also referred to as a "reversed portion") at least two times. When the filamentary protrusions 3 are advanced in their extending direction, the filamentary protrusions 3 have a portion where the extending direction of the filamentary protrusions 3 is alternately reversed in two adjacent locations. means that For example, when approximating with a continuous curve when ignoring the width of the projection 3 of the filaments in plan view, there is a form having a portion approximated by the Roman letter "S". Further, when the linear projections 3 are approximated by a straight line when the width of the projection 3 of the filament in plan view is ignored, there is a form having a portion approximated by the Roman letter "W".

In this specification, the term "irregular" means a shape having a certain rule, or a shape that is arranged according to a certain rule, which cannot be said to be patterned. A typical example of a non-irregular shape, that is, a regular shape is a so-called "lenticular lens (lens)," in which a plurality of cylindrical unit lenses are arranged adjacent to each other in a direction perpendicular to the longitudinal direction. lenticular lens)”, which are arranged with a certain periodicity in a specific direction. Therefore, the irregular wrinkles in the present disclosure refer to the fact that the shape of one protrusion itself is irregular rather than a shape formed according to a certain rule such as periodicity, and that a plurality of protrusions formed by a plurality of protrusions It includes that the shape of the part is not formed and arranged according to a certain rule but is irregular, and that the shape of the recess surrounded by such a plurality of protrusions is also irregular. .
In the matte article of the present disclosure, the shape of one protrusion (one protrusion) itself, the shape and arrangement of each of the plurality of protrusions (plurality of protrusions), and the recesses surrounded by the plurality of protrusions If any one of the shapes is irregular, a matte effect and a moist touch can be obtained by having irregular wrinkles, but it is preferable that both are irregular. By having irregular wrinkles, the matte article of the present disclosure improves the visibility and texture of the matte effect, stably exhibits an extremely excellent matte effect, and exhibits a moist touch. become a thing.

As described above, the matte layer has wrinkles, ie, unevenness on at least one surface thereof. Protrusions and recesses in the uneven shape, for example, using the brightness difference of the image on the surface of the decorative material of the present disclosure, the darkest part in the density distribution image is set to gradation 255, and the lightest part in the density distribution image is set to gradation. 0, the gradations 0 to 255 may be classified by binarization processing such that the gradations 0 to 127 are concave portions and the gradations 128 to 255 are convex portions.

The surface of the matte article of the present disclosure preferably has irregular wrinkles on at least a portion thereof, and more preferably has irregular wrinkles on the entire surface. The place where wrinkles are formed is not particularly limited as long as it is the surface of the matte article, for example, not only the place corresponding to the pattern described later, that is, not only on the pattern, but also at least part of the surface, due to the formation of wrinkles A matte effect and a moist touch are exhibited. For example, when the decoration layer described later is provided and irregular wrinkles are formed in a part, the wrinkles are formed on a portion corresponding to the pattern of the decoration layer, for example, on the pattern, so that the pattern is more matte than the surroundings. Since it is visually recognized as a part that has been marked, it is possible to improve the design.
Also, as shown in FIG. 6, it has a plurality of protrusions formed by a plurality of protrusions that are irregular but uniform to some extent, and recesses surrounded by the protrusions. is preferred. Therefore, a shape in which the width of one convex portion (projection portion) changes extremely is unlikely to result in the above-described surface shape, and is not a preferable aspect for obtaining the visibility and texture of the matte effect, and the texture is moist. It cannot be said that this is a preferable mode for obtaining a smooth tactile sensation. Concerning the shapes of protrusions (protrusions) and recesses that form irregular wrinkles, specific aspects that can be advantageous in stably improving the matting effect and improving the moist touch will be described below. . When the wrinkles have the following shape, the surface shape described above is likely to be exhibited, and the matting effect and moist touch are improved.

Regarding the shape of the wrinkles formed on at least one surface of the matte layer, the height of the projections (the height of the protrusions) is preferably 0.5 µm or more, more preferably 1 µm or more, and still more preferably 2 µm or more. and the upper limit is about 10 μm or less. The width of the protrusion is preferably 0.1 μm or more, more preferably 0.3 μm or more, and still more preferably 0.5 μm or more, and the upper limit is preferably 10 μm or less, more preferably 4 μm or less, and still more preferably 3 μm. It is below. When the height and width of the protrusions are within the above ranges, the surface shape described above is likely to be exhibited, and in relation to the recesses, the matting effect is stably improved and the moist touch is improved.
Here, the above dimensions of the protrusions are arbitrary 10 protrusions (protrusions) in arbitrary 10 locations (100 μm square area × 10 locations) of the matte article of the present disclosure, that is, the average of a total of 100 protrusions value. In addition, as shown in FIG. 6, the width of one protrusion (projection) is not the same, but wide and narrow, so the width of one protrusion (projection) is The average value of the width of any five points in The same applies to the height of the projection (protrusion).

The depth of the concave portion is preferably 0.5 μm or more, more preferably 1 μm or more, still more preferably 2 μm or more, and the upper limit is about 10 μm or less. The width of the recess is preferably 0.1 μm or more, more preferably 0.2 μm or more, and still more preferably 0.3 μm or more, and the upper limit is preferably 10 μm or less, more preferably 3 μm or less, and still more preferably 2 μm or less. is. When the depth and width of the concave portions are within the above ranges, the surface shape described above is likely to be exhibited, and in relation to the convex portions, the matting effect is stably improved and the moist touch is improved.
Here, the dimensions of the recesses are determined in the same manner as the dimensions of the projections.

The distance from the top of the projection to the bottom of the recess, that is, the height difference between the projection and the recess, is preferably 1 μm or more, more preferably 2 μm or more, still more preferably 4 μm or more, and the upper limit is preferably 20 μm or less, more preferably 2 μm or more. It is preferably 8 μm or less, more preferably 7 μm or less. When the distance is within the above range, the above surface shape is likely to be exhibited, the matting effect is stably improved, and the moist touch is improved.
Here, the dimensions of the recesses are determined in the same manner as the dimensions of the projections.

The occupancy ratio of the convex portion is preferably 15% or more, more preferably 20% or more, and still more preferably 30% or more, and the upper limit is preferably 80% or less, more preferably 70% or less, and further preferably 60% or less. is. When the occupancy ratio of the convex portions is within the above range, the surface shape described above is likely to be exhibited, and in relation to the occupancy ratio of the concave portions surrounded by the convex portions, the matting effect is stably improved, and a moist touch is provided. improves.
Here, the occupancy ratio of the convex portions is the average value of the occupancy ratio of the convex portions at arbitrary 10 locations (100 μm square area×10 locations) of the matte article of the present disclosure.

Although the convex portion and the concave portion may have portions of approximately the same direction and approximately the same width, it is preferable that the length is short in consideration of the improvement of the matting effect and the improvement of the moist feel. Specifically, the length of continuous protrusions and recesses having approximately the same direction and approximately the same width is preferably 95 μm or less, more preferably 80 μm or less, and even more preferably 70 μm or less, and the lower limit is preferably 5 μm or more. It is more preferably 10 μm or more, still more preferably 15 μm or more. When the length is within the above range, wrinkles become more irregular, so that the matte effect is stably improved and the moist touch is improved.
Here, 80% or more of any 10 convex portions and concave portions (that is, a total of 100 convex portions and concave portions) in any 10 locations (100 μm square area × 10 locations) of the matte article of the present disclosure and more preferably 85% or more, still more preferably 90% or more, and still more preferably 95% or more. In addition, the “substantially” of “substantially the same” in this specification means that they are substantially the same, without branching, meaning a difference within ± 3 ° in the case of direction, and ± 5 in the case of width Means difference within %.

In addition, the number of protrusions (protrusions) in a 100 μm square area is preferably 10 or more, more preferably 20 or more, and still more preferably 30 or more, and the upper limit is preferably 200 or less, more preferably 100 or less, and further. Preferably it is 70 or less. When the number of protrusions is within the above range, the matting effect is stably improved and the moist touch is improved.
The number of protrusions is the average number of protrusions in 10 locations (100 μm square area×10 locations) of the matte article of the present disclosure.

FIG. 3 is a cross-sectional view showing one embodiment of the matte article of the present disclosure, which is a cross-sectional view of the matte article 1 cut along a plane parallel to its thickness direction. The thickness direction of the matte article 1 is the Z direction in FIG.
The shape of the recess may be, for example, an acute-angled shape as shown in FIG. 3a, a semicircular or semielliptical shape as shown in 2b, or a combination thereof. Alternatively, a shape such as 2c in FIG. 3, in which one convex portion partially has a concave portion, may be used.
On the other hand, as for the shape of the convex portion, as shown in 3a and 3b of FIG. 3, although the width is wide or narrow, it exhibits a semicircular or semielliptical shape.

The thickness of the matte layer is not particularly limited as long as it is a thickness capable of stably expressing the matting effect and forming the above-mentioned wrinkles to the extent that it can express a moist touch. Considering the ease of handling, etc., it is usually 1 μm or more, preferably 2 μm or more, more preferably 3 μm or more, even more preferably 4 μm or more, and even more preferably 5 μm or more, and the upper limit is preferably 300 μm or less, more preferably 300 μm or less. It is 200 μm or less, more preferably 150 μm or less, still more preferably 100 μm or less.
In this specification, the thickness of the matte layer is the average value of the 20 thicknesses measured from the image of the cross section of the matte article taken using a scanning electron microscope (SEM). do. The acceleration voltage of the SEM is set to 3 kV, and the magnification is set according to the thickness. The same applies to the thicknesses of other layers.

The matte layer is a layer that exhibits the above-described surface shape on its entire surface, and since the matte article of the present disclosure has the surface shape on at least part of the surface, at least part of the surface of the matte article It may be provided on the entire surface. When the matte article of the present disclosure has the base material and the matte layer, the matte layer may be provided on at least part of the surface of the base material, or may be provided over the entire surface of the base material.
If the matte layer is provided in a place where the consumer can see and touch the matte article, that is, the surface shape is provided in a place where the consumer can see and touch the matte article. , the effects of the invention such as matte effect and moist touch are obtained.

Further, even when the substrate has the shape of a film, a sheet, or a plate, the matte layer may be provided at a place where the consumer can see and touch the matte article, and at least one surface of the matte layer It may be provided on a part of it, or may be provided on the entire surface, and from the viewpoint of improving the matte effect and moist touch, as shown in FIGS. It is preferable that

(resin)
As the resin for forming the matte layer, a resin composition for forming a matte layer containing a predetermined amount of the wrinkle-forming stabilizer is formed and cured to form a cured product and a resin constituting the matte layer. good. Such resins include ionizing radiation-curable resins. The matte layer is a layer that can be provided on the outermost surface of the matte article of the present disclosure, as also shown in FIGS. Therefore, in addition to being a resin that easily forms wrinkles with a wrinkle-forming stabilizer, considering the improvement of usability as a matte article, it exhibits surface properties such as processing characteristics, stain resistance, scratch resistance, and weather resistance. It is preferable to use a resin that is easily cured, and an ionizing radiation-curable resin is a preferable resin from these points of view. In the matte article of the present disclosure, since the content of the wrinkle-forming stabilizer contained in the matte layer is extremely small, the performance of the resin forming the matte layer is more directly exhibited as a surface property. Become.

The ionizing radiation-curable resin is a resin having an ionizing radiation-curable functional group, and the ionizing radiation-curable functional group is a group that is crosslinked and cured by irradiation with ionizing radiation. A functional group having an ethylenic double bond such as an allyl group is preferred. In addition, in this specification, a (meth)acryloyl group shows an acryloyl group or a methacryloyl group. Moreover, in this specification, (meth)acrylate indicates acrylate or methacrylate.
In addition, ionizing radiation means, among electromagnetic waves or charged particle beams, those having energy quanta capable of polymerizing and/or cross-linking molecules, and ultraviolet rays (UV) or electron beams (EB) are usually used, In addition, electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion beams are also included.

Ionizing radiation curable resins include electron beam curable resins and ultraviolet curable resins. In consideration of stabilizing the formation of wrinkles by the wrinkle-forming stabilizer, stably improving the matting effect, and improving the moist feel, an ultraviolet curable resin is preferred.
Specifically, the ionizing radiation-curable resin can be appropriately selected and used from polymerizable monomers and polymerizable oligomers conventionally used as ionizing radiation-curable resins.

As the polymerizable monomer, a (meth)acrylate monomer having a radically polymerizable unsaturated group in the molecule is preferable, and a polyfunctional (meth)acrylate monomer is particularly preferable. Here, "(meth)acrylate" means "acrylate or methacrylate".
Polyfunctional (meth)acrylate monomers include (meth)acrylate monomers having two or more ionizing radiation-curable functional groups in the molecule and at least a (meth)acryloyl group as the functional group.

Stabilize the formation of wrinkles, stably improve the matting effect, improve the moist touch, and further improve surface properties such as post-processing properties, scratch resistance, and weather resistance. The number of functional groups of the polyfunctional (meth)acrylate monomer is preferably 2 or more and 8 or less, more preferably 2 or more and 6 or less. Moreover, when it is the said number of functional groups, said surface shape is especially easy to obtain, and it becomes easy to improve the moist touch.
These polyfunctional (meth)acrylates may be used alone or in combination.

Polymerizable oligomers include, for example, (meth)acrylate oligomers having two or more ionizing radiation-curable functional groups in the molecule and at least (meth)acryloyl groups as the functional groups. Examples thereof include urethane (meth)acrylate oligomers, epoxy (meth)acrylate oligomers, polyester (meth)acrylate oligomers, polyether (meth)acrylate oligomers, polycarbonate (meth)acrylate oligomers, and acrylic (meth)acrylate oligomers.
Furthermore, as polymerizable oligomers, there are also highly hydrophobic polybutadiene (meth)acrylate oligomers having (meth)acrylate groups in the side chains of polybutadiene oligomers, and silicone (meth)acrylate oligomers having polysiloxane bonds in the main chain. , aminoplast resins modified with aminoplast resins having many reactive groups in small molecules (meth)acrylate oligomers, novolac type epoxy resins, bisphenol type epoxy resins, aliphatic vinyl ethers, aromatic vinyl ethers, etc. There are oligomers having cationic polymerizable functional groups.

These polymerizable oligomers may be used alone or in combination.
As the polymerizable oligomer, among the above, urethane (meth)acrylate oligomer, epoxy (meth)acrylate oligomer, polyester (meth)acrylate oligomer, polyether (meth)acrylate oligomer, polycarbonate (meth)acrylate oligomer, acrylic (meth) Acrylate oligomers are preferred, urethane (meth)acrylate oligomers and polycarbonate (meth)acrylate oligomers are more preferred, and urethane (meth)acrylate oligomers are even more preferred. When these polymerizable oligomers are used, the formation of wrinkles can be stabilized, the matting effect can be stably improved, the moist touch can be improved, and furthermore, post-processing properties, scratch resistance and weather resistance can be obtained. surface properties such as toughness can be improved.

The number of functional groups of these polymerizable oligomers is preferably 2 or more and 8 or less, and the upper limit is more preferably 6 or less. When the number of functional groups is within the above range, the formation of wrinkles can be stabilized, the matting effect can be stably improved, the moist touch can be improved, and further processing characteristics, scratch resistance and weather resistance can be obtained. surface properties such as toughness can be improved.
For the same reason, the weight average molecular weight of these polymerizable oligomers is preferably 900 or more and 7,500 or less, more preferably 1,000 or more and 7,000 or less, and 1,200 or more and 6,000 or less. More preferred. is more preferred. Here, the weight average molecular weight is the average molecular weight measured by GPC analysis and converted with standard polystyrene.

In the present disclosure, it is preferable to use a combination of the polymerizable oligomer and the polymerizable monomer as the resin forming the matte layer. The polymerizable oligomer is preferably a polyfunctional urethane (meth)acrylate oligomer, more preferably a polyfunctional urethane acrylate oligomer, and the polymerizable monomer is preferably a polyfunctional polymerizable monomer, such as a polyfunctional (meth)acrylate. Monomers are more preferred, and multifunctional acrylate monomers are even more preferred. It is possible to stabilize the formation of wrinkles, stably improve the matting effect, improve the moist touch, and further improve surface properties such as processing properties, scratch resistance, and weather resistance.
When used in combination, for the same reason, the content of the polymerizable oligomer with respect to the total 100 parts by mass of the polymerizable oligomer and the polymerizable monomer is preferably 40 parts by mass or more, more preferably 50 parts by mass or more, and further It is preferably 60 parts by mass or more, more preferably 70 parts by mass or more, and particularly preferably 80 parts by mass or more, and the upper limit is preferably 98 parts by mass or less, more preferably 95 parts by mass or less, and still more preferably 92 parts by mass or less. is.

(resin composition)
The matte layer is preferably composed of a cured product of a resin composition containing a predetermined content of the wrinkle-forming stabilizer, and the resin composition preferably contains the resin and the wrinkle-forming stabilizer in a predetermined content. is included in The resin composition used in the present disclosure may contain other components in addition to the wrinkle stabilizer and resin described above, depending on desired performance and the like.
The resin composition for forming the matte layer may contain a monofunctional (meth)acrylate for the purpose of reducing its viscosity, for example. These monofunctional (meth)acrylates may be used alone or in combination.

Moreover, when the resin is an ultraviolet-curable resin that is cured by ultraviolet rays, it preferably contains additives such as a photopolymerization initiator and a photopolymerization accelerator. By containing these additives, the resin can be cured even with ultraviolet light (without using ionizing radiation), and practical surface properties can be obtained.
Examples of the photopolymerization initiator include one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyldimethylketal, benzoylbenzoate, α-acyloxime ester, thioxanthones and the like.
In addition, the photopolymerization accelerator can reduce polymerization inhibition by air during curing and increase the curing speed. One or more selected types can be mentioned.

Since the matte layer is a layer that can be provided on the outermost surface of the matte article of the present disclosure, it is preferably a layer having weather resistance, for example, it contains various weather resistance agents such as ultraviolet absorbers and light stabilizers. is preferred.
As the UV absorber, any UV absorber that is commonly used for cosmetic materials, decorative sheets, etc. can be used without particular limitation. Examples include triazine-based ultraviolet absorbers. As the light stabilizer, any light stabilizer commonly used for decorative materials, decorative sheets, etc. can be used without particular limitation, and examples thereof include hindered amine light stabilizers such as piperidinyl sebacate light stabilizers. Moreover, these ultraviolet absorbers and light stabilizers may have a reactive functional group having an ethylenic double bond such as a (meth)acryloyl group, vinyl group or allyl group in the molecule.
Weather resistance agents such as these ultraviolet absorbers and light stabilizers can be used alone or in combination.

[60° gross value]
The matte articles of the present disclosure are articles with excellent matte effect visibility and texture. As used herein, the term "matte" means that the gloss is difficult to see, and it cannot be said unconditionally because it varies depending on the color tone, pattern, etc. of the article. If it is about 0.0 or less, it is generally treated as "matte".

Until now, for matte articles exhibiting black or other dark colors, even with the use of a matting agent, excellent visibility of the matting effect with a 60° gloss value of 20.0 or less, preferably 10.0 or less has been obtained. It was possible. Here, the term “dark color” means low lightness, for example, CIE (Commission Internationale de l’Eclairage) L ^* a ^* b ^* L ^* value in the color system measured in accordance with JIS Z8781-4:2013 (hereinafter referred to as Sometimes simply referred to as “L ^* value”) is usually about 40 or less, preferably 30 or less.
However, since a large amount of matting agent is used, streaks and unevenness occur during layer formation, making it difficult to manufacture easily, and the surface properties are lowered. In addition, for example, matte articles exhibiting a color tone other than black or other dark colors have a lower limit to the 60° gloss value even if a matting agent is used, and are the same as black matte articles. It has not been possible to easily obtain a matte article which is excellent in properties and is also excellent in the visibility and texture of the matte effect. Such a tendency becomes more remarkable as the 60° gloss value becomes smaller.

In the matte article of the present disclosure, by using a combination of two types of wrinkle-forming stabilizers having a predetermined average particle size and by reducing the content thereof to a small amount as described above, extremely excellent luster can be stably obtained. Not only was it possible to obtain the visibility and texture of the erasing effect, but also a moist touch was obtained. In addition, by suppressing the amount of the wrinkle-forming stabilizer used to an extremely small amount, it is possible to suppress a significant increase in the viscosity of the resin composition, making it easier to form a layer. It naturally has surface properties such as stain resistance, scratch resistance, and weather resistance.

The matte article of the present disclosure varies depending on the color tone as described above, so it cannot be defined unconditionally. 0 or less, furthermore, 7.5 or less, 5.0 or less, 4.0 or less, 3.6 or less, 2.0 or less, so that the visibility of the extremely excellent matting effect can be expressed.

Also, a matte article exhibiting a color tone other than black or other dark colors can have the above 60° gloss value. The 60° gloss value of the matte layer side of the matte article of the present disclosure is substantially the same as the 60° gloss value of the surface of the layer forming the outermost surface of the matte article, and further has other layers. Unless otherwise specified, the 60° gloss value of the surface of the matte layer is obtained. In addition, when another layer is provided and another layer is provided on the surface side from the matte layer, the 60 ° gloss value means the 60 ° gloss value of the other layer, but the matte of the present disclosure The particular 60° gloss value of the article is due substantially to the composition of the matte layer.
In this specification, the 60° gloss value on the matte layer side is the 60° specular gloss measured in accordance with JIS K 5600-4-7: 1999, and a gloss meter or the like is measured at any 10 points. is the average value of the values that can be measured from the matte layer side using

[Total light transmittance]
The matte article of the present disclosure may employ a base material composed of a non-transparent material as described above, a decorative layer described later, etc., and may be used for applications such as exterior members and interior members. It is something that can be done. Considering the case where the base material, the decorative layer etc. described later is adopted, and the case where it is used for the above purpose, the total light transmission of the matte article of the present disclosure measured in accordance with JIS K7361-1: 1997 The percentage is preferably 20% or less, more preferably 15% or less, even more preferably 10% or less.
As used herein, the total light transmittance of a matte article is the total light transmittance measured according to JIS K7361-1:1997, and is the average value of measurements at 10 arbitrary points.

[Other layers]
The matte article of the present disclosure may optionally have other layers such as a primer layer, a transparent resin layer, a decorative layer, an adhesive layer, etc., in addition to the matte layer and base material. A cross-sectional view showing one embodiment of a matte article of the present disclosure having these layers is shown in FIGS. 4 and 5 are cross-sectional views showing one embodiment of the matte article of the present disclosure, which are cross-sectional views of the matte article 1 taken along a plane parallel to its thickness direction. Here, "thickness direction" means the Z direction in FIGS.
The matte decorative material 1 shown in FIG. 4 has a substrate 5 and a matte layer 4 in this order, and the matte article 1 shown in FIG. It has a transparent resin layer 8, a primer layer 9 and a matte layer 4 in this order.

(primer layer)
The matte article of the present disclosure may have a primer layer, for example, when composed of multiple layers, in order to improve the interlayer adhesion of the multiple layers.
When the matte article of the present disclosure has a layer other than the matte layer, for example, when it has a matte layer and a substrate, a primer layer is placed between the matte layer and the substrate to improve interlayer adhesion. can be provided.

The primer layer is mainly composed of a binder resin, and may contain additives such as ultraviolet absorbers and light stabilizers, if necessary.

Binder resins include urethane resins, acrylic polyol resins, acrylic resins, ester resins, amide resins, butyral resins, styrene resins, urethane-acrylic copolymers, and polycarbonate-based urethane-acrylic copolymers (carbonate bonds in the polymer main chain). urethane-acrylic copolymer derived from a polymer (polycarbonate polyol) having two or more hydroxyl groups at the end and side chain), vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl acetate-acrylic copolymer Resins such as coalescent resins, chlorinated propylene resins, nitrocellulose resins (nitrocellulose), and cellulose acetate resins are preferred, and these can be used alone or in combination.
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. Among these, a polyol resin such as an acrylic polyol resin is preferably crosslinked and cured with an isocyanate curing agent, and more preferably an acrylic polyol resin is crosslinked and cured with an isocyanate curing agent.

The thickness of the primer layer is preferably 0.1 μm or more and 10 μm or less, more preferably 1 μm or more and 8 μm or less, and even more preferably 2 μm or more and 6 μm or less.

In the matte article of the present disclosure, for the purpose of improving adhesion to an adherend such as a resin molded product on which the article is laminated, at least one of the matte layers is provided on the side opposite to the surface having wrinkles, and also on the base. material, it can also have a primer layer (also referred to as a "back primer layer") on the opposite side of the substrate to the side on which the matte layer is provided.

(Transparent resin layer)
The matte article of the present disclosure may have a transparent resin layer in order to increase its strength, and from the viewpoint of protecting the decorative layer when it has a decorative layer, which will be described later. The transparent resin layer may be provided between the base material and the matte layer when it has a base material, and when it has a decorative layer, it may be provided between the decorative layer and the matte layer in order to protect the decorative layer. should be placed in between.

Examples of resins constituting the transparent resin layer include polyolefin resins, polyester resins, polycarbonate resins, acrylonitrile-butadiene-styrene resins (hereinafter also referred to as "ABS resins"), acrylic resins, vinyl chloride resins, and the like. Among these, polyolefin resins and vinyl chloride resins are preferred from the viewpoint of suitability for post-processing. Also, two or more of these various resins may be laminated or mixed for use.

The transparent resin layer may be transparent to the extent that the base material side is visible from the transparent resin layer, and if it has a decorative layer, it may be transparent to the extent that the decorative layer can be visually recognized. , colored transparent and translucent. That is, in the present disclosure, "transparency" means not only colorless transparency, but also colored transparency and semi-transparency.

The transparent resin layer may contain additives such as UV absorbers, light stabilizers and other weather resistance agents, and colorants and the like.
The thickness of the transparent resin layer is preferably 20 μm or more and 150 μm or less, more preferably 40 μm or more and 120 μm or less, and even more preferably 60 μm or more and 100 μm or less, in consideration of the protection of the decorative layer and post-processing suitability.

(decorative layer)
The matte article of the present disclosure may have a decorative layer to improve design. The decorative layer may be provided on the surface opposite to at least one wrinkled surface of the matte layer. If they are provided, the decoration layer, the transparent resin layer and the matte layer may be provided in this order.

The decoration layer may be, for example, a colored layer covering the entire surface, or a pattern layer formed by printing various patterns using ink and a printing machine. Here, the “colored layer covering the entire surface” is also referred to as the “solid colored layer” and is the layer indicated by “6a” in FIG. 5, and the “picture layer” is indicated by “6b” in FIG. be Further, as shown in FIG. 5, a solid colored layer and a pattern layer may be combined.

The pattern (pattern) of the pattern layer is not particularly limited, and any desired pattern may be adopted. Examples include texture patterns on the surface of fabric, grain patterns on the surface of leather, geometric patterns, characters, figures, and combinations thereof.
In addition, patterns such as patterns of fabrics, ceramic materials, stone materials, wood-based materials, metal surfaces, etc., which are exemplified as those having a "moist" feel, are also preferable. A more realistic design can be expressed by combining the “moist” feel of the matte article of the present disclosure with the pattern of the object having the “moist” feel.

The ink used for the decorative layer is a mixture of a binder resin and a coloring agent such as a pigment or dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, an ultraviolet absorber, a light stabilizer, etc. used.
The binder resin for the decorative layer is not particularly limited, and examples include urethane resins, acrylic polyol resins, acrylic resins, ester resins, amide resins, butyral resins, styrene resins, urethane-acrylic copolymers, and vinyl chloride-vinyl acetate copolymers. Resins such as coalesced resins, vinyl chloride-vinyl acetate-acrylic copolymer resins, chlorinated propylene resins, nitrocellulose resins, and cellulose acetate resins can be used. Moreover, various types of resins can be used, such as a one-liquid curable resin and a two-liquid curable resin with a curing agent such as an isocyanate compound.

As the colorant, a pigment having excellent hiding properties and weather resistance is preferred. Pigments similar to those exemplified as pigments that can be used in the substrate can be used.
The content of the coloring agent is preferably 5 parts by mass or more and 90 parts by mass or less, more preferably 15 parts by mass or more and 80 parts by mass or less, and 30 parts by mass or more and 70 parts by mass, based on 100 parts by mass of the resin constituting the decorative layer. More preferred are:

The decorative layer may contain additives such as ultraviolet absorbers, weathering agents such as light stabilizers, and colorants.
The thickness of the decorative layer may be appropriately selected according to the desired pattern, but is preferably 0.5 μm or more and 20 μm or less, more preferably 1 μm or more and 10 μm, in order to hide the background color of the adherend and improve the design. The following is more preferable, and 2 μm or more and 5 μm or less is even more preferable.

(glue)
When the matte article of the present disclosure has a base material and a transparent resin layer, it may have an adhesive layer between the base material and the transparent resin layer in order to improve the adhesion of both layers. .
When a decorative layer is further provided between the base material and the transparent resin layer, the positional relationship between the adhesive layer and the decorative layer is not particularly limited. and a transparent resin layer in this order, or an adhesive layer, a decoration layer, and a transparent resin layer in this order from the side closer to the substrate.

The adhesive layer can be composed of, for example, an adhesive such as a urethane-based adhesive, an acrylic adhesive, an epoxy-based adhesive, or a rubber-based adhesive. Among these adhesives, urethane-based adhesives are preferable in terms of adhesive strength.
Urethane-based adhesives include, for example, adhesives using two-liquid curing urethane resins containing various polyol compounds such as polyether polyols, polyester polyols and acrylic polyols, and curing agents such as isocyanate compounds.

The thickness of the adhesive layer is preferably 0.1 μm or more and 30 μm or less, more preferably 1 μm or more and 15 μm or less, and even more preferably 2 μm or more and 10 μm or less, in order to efficiently obtain a desired adhesive strength.

[Method for producing matte article]
A first method for producing a matte article of the present disclosure comprises forming a matte layer, a layer of a resin composition for forming a matte layer containing the above-mentioned resin and a wrinkle stabilizer, with light having a wavelength of at least 100 nm or more and 380 nm or less. It is characterized by comprising a matte layer forming step of forming by irradiation with.
By the first production method, for example, as shown in FIGS. 4 and 5, a laminate having a substrate and a cured product layer of a resin composition having the above surface shape on at least a part thereof as a matte layer Thus, it is possible to produce a matte article having a laminate structure in which a plurality of layers are laminated. For example, the above resin composition for forming a matte layer is applied on a substrate, a layer of the resin composition is formed on the substrate, and the substrate is irradiated to form a matte layer. and a matte layer. By making the matte article have the above-mentioned surface shape by means of the matte layer, the surface on the matte layer side can have the above-mentioned surface shape. Therefore, the first production method is a matte article having a matte effect such that the 60° gloss value on the matte layer side is 20.0 or less, 10.0 or less, or even less, and has a moist touch. It is a suitable manufacturing method when manufacturing

The method of manufacturing the matte article of the present disclosure makes it possible to easily obtain the matte article of the present disclosure described above. Specifically, in forming the matte layer, a resin composition for forming a matte layer containing a wrinkle-forming stabilizer is irradiated with ultraviolet rays having a low wavelength of at least 100 nm or more and 380 nm or less. Wrinkles can be formed on at least one surface of the matte layer, making it possible to impart a matte effect and a moist feel to the matte article (matte layer).

By irradiating the resin composition for forming the matte layer with such a low-wavelength ultraviolet ray, wrinkles are formed on at least one surface of the matte layer, and the matting effect and moist touch are expressed. Although the details are unknown, it is presumed to be due to the following mechanism.

When a low-wavelength ultraviolet ray is applied to a coating layer in which a resin composition for forming a matte layer is applied to a predetermined thickness, the energy of the ultraviolet ray permeates only the surface portion, and the energy does not reach the lower layer. , only the surface portion of the resin composition begins to harden. Therefore, it is considered that only the surface undergoes curing shrinkage and wrinkles are formed. Thus, the formation of wrinkles is considered to occur when the resin composition for forming the matte layer is cured only in a certain thickness direction from the surface by irradiation with low-wavelength ultraviolet rays.

In addition, from the comparison of the examples and comparative examples described later, the formation of wrinkles is unstable when the wrinkle-forming stabilizer is not included, and the visibility and texture of the matting effect are stable over the entire surface of the matting layer. It does not develop to a sufficient degree, and does not sufficiently develop a moist touch. For this reason, the matte effect and the stable expression of moist touch cannot be explained only by hardening only the surface portion with low-wavelength ultraviolet rays. That is, in order for the matte article of the present disclosure to stably have wrinkles to exhibit a matte effect and a moist feel, it is essential to contain a wrinkle-forming stabilizer.

Considering that a stable matte effect and a moist feel due to wrinkle formation were not obtained when the wrinkle-forming stabilizer was not contained, the wrinkle-forming stabilizer functions as a nucleus that triggers wrinkle formation. Around the nucleus, the resin on the surface of the resin composition gathers to form wrinkle protrusions (protrusions) and recesses along with the formation of the protrusions (protrusions). As a result, the formation of wrinkles is stabilized, and it is believed that a matte effect and a moist touch are stably exhibited.

The wrinkle-forming stabilizer and the resin composition for forming a matte layer containing the wrinkle-forming stabilizer used in the production method of the present disclosure include the wrinkle-forming stabilizer and the matte layer-forming resin composition that can be used in the matte decorative material of the present disclosure. The contents are the same as those described for the layer-forming resin composition.

In the production method of the present disclosure, the resin composition for forming the matte layer is irradiated with light having a wavelength of at least 100 nm or more and 380 nm or less. Due to this irradiation, the energy of the ultraviolet rays penetrates only the surface portion as described above, and the energy does not reach the lower layer, so that only the surface portion of the resin composition begins to cure. Therefore, curing shrinkage occurs only on the surface, which stabilizes the formation of wrinkles, and the surface layer of the resin composition becomes a cured product, forming a matte layer. Then, after that, curing progresses from the near-surface portion where curing progresses slowly to the deep portion away from the depth direction, and the layer of the resin composition becomes a cured product, thereby curing the entire thickness of the resin composition, In addition, the matte layer exhibits a light diffusion effect on the surface and has wrinkles that exhibit a moist feel. In order to accelerate the progress of hardening to deep parts, it is preferable to perform another irradiation treatment after irradiation with light having a wavelength of 100 nm or more and 380 nm or less, as described later.

The light having a wavelength of at least 100 nm or more and 380 nm or less includes, for example, rare gases such as Ar, Kr, Xe, and Ne, halogen halides of rare gases such as F, Cl, I, and Br, or mixed gases thereof. Preferred is "excimer light," which includes light in the ultraviolet wavelength region from excited dimers, or excimers, formed by the discharge. The wavelength of the excimer light and the excimer serving as the light source include, for example, light with a wavelength of 126 nm emitted from the excimer of Ar ₂ (hereinafter abbreviated as “126 nm (Ar ₂ )”), 146 nm (Kr ₂ ), and 157 nm. Wavelength light such as (F ₂ ), 172 nm (Xe ₂ ), 193 nm (ArF), 222 nm (KrCl), 247 nm (KrF), 308 nm (XeCl), 351 nm (XeF) can be preferably employed. As the excimer light, either spontaneous emission light or laser light with high coherence due to stimulated emission can be used, but the use of spontaneous emission light is usually sufficient. A discharge lamp that emits light (ultraviolet rays) is also called an “excimer lamp”.
The excimer light has a single wavelength peak and is characterized by a narrow half width of the wavelength compared to ordinary ultraviolet rays (for example, ultraviolet rays emitted from metal halide lamps, mercury lamps, etc.). By using such excimer light, the formation of wrinkles is stabilized, the matting effect is stably improved, and the moist touch is also improved.

The wavelength is preferably 120 nm or more, more preferably 140 nm or more, still more preferably 150 nm or more, and even more preferably, in order to stabilize the formation of wrinkles, stably improve the matting effect, and improve the moist touch. It is 155 nm or more, and the upper limit is preferably 320 nm or less, more preferably 300 nm or less, still more preferably 250 nm or less, still more preferably 200 nm or less, and most preferably 172 nm (Xe ₂ ). Thus, in the present disclosure, in order to stably improve the matting effect and improve the moist touch, it is preferable to use light with a shorter wavelength. It can be said that wavelength ultraviolet rays (wavelength: 280 nm or less) are more preferable, and short wavelength ultraviolet rays are even more preferable.

In the present disclosure, the integrated amount of light of the above wavelength is preferably 1 mJ/cm 2 or more, more preferably 1 mJ/cm ² or more, from the viewpoint of stabilizing the formation of wrinkles, stably improving the matting effect, and improving the moist touch. It is 10 mJ/cm ² or more, more preferably 30 mJ/cm ² or more, and even more preferably 50 mJ/cm ² or more. The upper limit is not particularly limited, and considering productivity such as reducing the number of lamps required for irradiating wavelength light and improving production efficiency, it is preferably 1,000 mJ/cm ² or less, more preferably 500 mJ/cm 2 or less. cm ² or less, more preferably 300 mJ/cm ² or less. For the same reason, the ultraviolet power density is preferably 0.001 W/cm or more, more preferably 0.01 W/cm or more, and still more preferably 0.03 W/cm or more, and the upper limit is preferably 10 W/cm. cm or less, more preferably 5 W/cm or less, and even more preferably 3 W/cm or less.
Further, the oxygen concentration at the time of irradiation with light of the above wavelength is preferably lower, preferably 1,000 ppm or less, more preferably 750 ppm or less, even more preferably 500 ppm or less, and even more preferably 300 ppm or less.

In the matte layer forming step in the method for producing a matte article of the present disclosure, in addition to the irradiation with light having a wavelength of at least 100 nm or more and 380 nm or less, other treatments that contribute to curing of the resin composition for forming the matte layer may be performed.
For example, in order to stabilize the formation of wrinkles due to the difference in the degree of hardening progress between the surface portion and the deep portion distant from the surface in the depth direction, and to promote the progress of hardening to the deep portion, for example, the thickness exceeds 380 nm. Wavelength light, preferably wavelength light of about 385 nm or more and 400 nm or less may be irradiated in advance to pre-cure the entire resin composition for forming a matte layer, and then irradiation with wavelength light of 100 nm or more and 380 nm or less may be performed. Further, after irradiation with light having a wavelength of 100 nm or more and 380 nm or less, post-curing may be performed to further cure the resin composition. Pre-curing and post-curing may be appropriately determined depending on the desired properties required for the matte layer, such as surface properties such as processing properties and stain resistance. Moreover, although the above wavelength light belongs to ultraviolet rays, it is possible to use not only ultraviolet rays but also other ionizing radiation such as electron beams. For example, in post-curing, an electron beam can be preferably used from the viewpoint of improving the surface properties of the matte layer.

In the production method of the present disclosure, the matte layer is formed by applying a resin composition for forming a matte layer by a known method such as gravure printing, bar coating, roll coating, reverse roll coating, comma coating, and the like. The applied layer (uncured resin layer) can be formed by irradiating with light having a wavelength of at least 100 nm or more and 380 nm or less.

In addition, the matte article obtained by the production method of the present disclosure may have other layers such as a transparent resin layer in addition to the base material described above as the layer that can be employed in the matte article of the present disclosure. .
For example, the decorative layer, the adhesive layer, and the primer layer can be formed by applying a coating liquid containing the composition for forming each layer by the known method described above, and drying and curing as necessary. Moreover, when forming a transparent resin layer, a resin film forming the transparent resin layer can be formed by dry lamination or the like.

Among the matte articles of the present disclosure, a matte article composed of a single layer as shown in FIG. The article can be manufactured by the following second manufacturing method.
The second manufacturing method is a step of applying a resin composition for forming a matte product containing a resin and a wrinkle stabilizer onto the release layer of a support sheet having a release layer to form a coating layer; The method is characterized by comprising a step of irradiating the coating layer with light having a wavelength of at least 100 nm or more and 380 nm or less, and a step of peeling off the support sheet.

The support sheet may be appropriately selected from those exemplified as the substrates described above. For example, a substrate composed of a fibrous material, preferably a paper such as woodfree paper, may be used. After the resin composition is made into a matte article, it is easier to peel than the matte article, easy to handle, and economical.

The release layer is a layer provided for facilitating separation of the support sheet from the matte article after the resin composition has been formed into the matte article. Examples of the release layer include those containing acrylic resins, vinyl chloride-vinyl acetate, olefin resins, silicone resins, fluorine resins, silicones, or various resins modified with fluorine, which are excellent in release properties, and wax if necessary. can be mixed.
Waxes include, for example, microcrystalline wax, carnauba wax, paraffin wax, Fischer-Tropsch wax, various low-molecular-weight polyethylenes, wood wax, beeswax, whale wax, ivory wax, wool wax, shellac wax, candelilla wax, petrolactam, and some Various waxes such as modified waxes, fatty acid esters and fatty acid amides are preferred.

The resin composition for forming a matte article containing a resin and a wrinkle-forming stabilizer can be selected from resins and wrinkle-forming stabilizers exemplified as usable in the resin composition for forming a matte layer. be. Also, the content of the wrinkle-forming stabilizer is the same as that of the resin composition for forming the matte layer.

The application of the resin composition for forming a matte article can be performed in the same manner as the application of the resin composition for forming a matte layer, and the coating layer is irradiated with light having a wavelength of at least 100 nm or more and 380 nm or less. The method is also the same as that for irradiating the layer of the resin composition for forming the matte layer.
Further, the thickness of the coating layer is the thickness of the matte article obtained as it is. The thickness of the coating layer may be determined according to the desired thickness, is not particularly limited, and may be selected from the widest range of 1 μm or more and 10 cm or less among the thicknesses of the base material. Considering manufacturing suitability, handling suitability, etc., the thickness of the coating layer is preferably 3 μm or more, more preferably 5 μm or more, and the upper limit is preferably 300 μm or less, more preferably 200 μm or less.

Moreover, before forming the coating layer of the resin composition for forming a matte article, a decorative layer may be provided in order to improve the design. Thus, when composed of a single layer as shown in FIG. 3, the matte article may additionally have a decorative layer. The decorative layer may have the same structure as the decorative layer described as a layer that can be included in the matte article having the substrate and the matte layer.

By irradiating the coated layer of the resin composition for forming a matte article with light of the above wavelength, as with the above matte layer, only the surface causes curing shrinkage, so that the formation of wrinkles is stabilized, and the resin composition The surface layer of the product becomes a cured product having the above-described surface shape, and curing progresses from the surface layer, which progresses slowly, to a deep portion distant in the depth direction, and the resin composition is cured as a whole, so that at least a part of the surface. It becomes a matte article having the above surface shape.
Further, the irradiation may be post-cured or pre-cured in order to accelerate the curing of deep portions.

After curing the coating layer of the resin composition for forming a matte article by irradiating light with the above-mentioned predetermined wavelength, the support sheet is peeled off, so that at least a part of the surface has the above-mentioned surface shape. Consumables are obtained.

Further, among the matte articles of the present disclosure, matte articles having the above surface shape on at least part of the surface of a resin article such as an article composed of a single layer as shown in FIG. 3, such as a resin molded article. can be produced by the following third production method.
A third manufacturing method is characterized by having a step of embossing at least part of the surface of the resin molded product using an embossing plate, a shaping sheet, or the like to give the above surface shape.

Any embossing plate or embossing sheet can be used without particular limitation as long as it can impart the surface shape described above. The surface shape of the embossing plate and the embossing sheet and the surface shape embossed by them are opposite to each other. Specifically, Ssk (skewness) and Sku (kurtosis) have a shape that exhibits numerical values that are symmetrical with the Ssk (skewness) and Ssk (skewness) of the shaped sheet, respectively, with a normal distribution of 0 and 3 interposed therebetween. Therefore, an embossing plate, a shaping sheet, or the like having a surface shape with an Ssk (skewness) exceeding 0 may be used as the shaping sheet used to obtain the matte article of the present disclosure. For example, if an embossing plate or a shaping sheet with an Ssk (skewness) of 0.50 is used, a matte article having a surface shape with an Ssk (skewness) of -0.50 can be obtained. Further, for example, when an embossed plate or a shaping sheet having Ssk (skewness) of 0.50 and Sku (kurtosis) of 2.50 is used, Ssk (skewness) is −0.50 and Sku ( A matte article is obtained with a surface profile with a kurtosis of 3.50. Numerical values relating to the surface shape of the sculpting sheet and the matte article are theoretical values, and needless to say, some errors may occur.

Further, as the matte article of the present disclosure, for example, thermosetting high-pressure melamine resin decorative boards, low-pressure melamine resin decorative boards, diallyl phthalate (DAP) resin decorative boards, polyester decorative boards, guanamine resin decorative boards, phenolic resin decorative boards, etc. Also included is a flexible resin veneer. The thermosetting resin veneer is obtained by adding a liquid thermosetting resin to a fibrous material, such as paper, woven fabric or non-woven fabric made of fibers, which has been described as being usable as a base material for the matte article. Using the uncured product impregnated with this, pressure molding or heat pressure molding is performed, for example, heating temperature: 100 to 200 ° C., pressure: 0.1 to 9.8 MPa, molding time: 10 seconds to 120 It is a decorative board obtained by applying under the conditions of minutes. When performing pressure molding or heat and pressure molding, the base material, the embossing plate, and the shaping sheet are arranged so as to be laminated and molded to form a matte article having the surface shape described above. is obtained.

In this case, the thermosetting resin to be impregnated into the substrate includes, for example, melamine resin, urea resin, melamine-urea resin, guanamine resin, diallyl phthalate resin, polyester resin, phenol resin, epoxy resin, aminoalkyd resin, silicon resin. , Polysiloxane resins are preferred, and thermosetting resins such as melamine resins, urea resins, melamine-urea resins, guanamine resins, and sulfonamide resins are preferred. Preferred are melamine resins.

(Application)
The matte article of the present disclosure can be used as a decorative member as described below.

The matte article of the present disclosure can also be used as a shaping sheet. When used as an embossing sheet, it can be used as an embossing plate, embossing sheet, etc. used for embossing in the above-mentioned second manufacturing method and third manufacturing method, thereby forming an article composed of the above-mentioned single layer. , a thermosetting resin decorative board is obtained.
As described above, the surface shape of the shaped object (article composed of a single layer, thermosetting resin decorative board, etc.) is different from the surface shape of the shaped sheet, which is the matte article of the present disclosure. It becomes a shape exhibiting an opposite shape. Therefore, objects such as articles composed of a single layer and thermosetting resin decorative boards have an Ssk (skewness) of 0.00 or more, have a moist touch or a smooth touch, and have a matte effect. become what you have.

[Decorative parts]
The matte article of the present disclosure can be used as a decorative member as it is, or can be used as a decorative member by laminating, compositing, or combining with an adherend. Which one to use may be determined as desired. When the matte article of the present disclosure is used as a decorative member, the matte article preferably has a decorative layer.

In the case of having an adherend, the decorative member has the adherend and the above-described matte article of the present disclosure. The surface opposite to the one surface on which wrinkles are formed in the extinguishing layer to exhibit a matting effect and a moist feel is laminated. In addition, when having an adherend, the matte article of the present disclosure preferably has a film or sheet form in consideration of ease of lamination.

On the other hand, the matte article of the present disclosure, which is composed of a single layer as shown in FIG. 3, is suitable for use as a decorative member as it is. Matte articles having a surface topography of are particularly preferred. When the matte article of the present disclosure is used as it is as a decorative member, it is suitable for use as a decorative member that constitutes the surface of buildings, various types of furniture, vehicles, home electric appliances, and the like.
Further, among the articles composed of a single layer shown in FIG. It can be used as a member, and depending on the thickness, it can be used in combination with an adherend.

(Substrate)
Examples of the adherend include flat plates of various materials, plate materials such as curved plates, three-dimensional shaped articles such as cylinders and polygonal prisms, sheets (or films), and the like. For example, it is used as a plate material such as a wood veneer made of various woods such as cedar, cypress, pine, lauan, wood plywood, laminated lumber, particle board, and wood fiberboard such as MDF (medium density fiberboard), and as a three-dimensional article. Wood members used as plate materials, three-dimensional articles, or sheets made of metals such as iron, aluminum, copper, and alloys containing one or more of these metals; Glass, ceramics such as ceramics, gypsum, cement , ALC (lightweight cellular concrete), ceramic materials used as plate materials and three-dimensional articles made of non-ceramic ceramic materials such as calcium silicate; acrylic resins, polyester resins, polystyrene resins, polyolefin resins such as polypropylene, ABS (acrylonitrile -butadiene-styrene copolymer) resins, phenolic resins, vinyl chloride resins, cellulose resins, resin members used as resins such as rubber plates, three-dimensional articles, and sheets. Moreover, these members can be used individually or in combination of multiple types.

The adherend may be appropriately selected from the above according to the application, and may be used as interior members of buildings such as walls, ceilings, and floors, or exterior members such as outer walls, roofs, eaves, fences, gates, and windows. When used as fittings or fixtures such as frames, doors, handrails, baseboards, rims, moldings, etc., it is preferably made of at least one member selected from wooden members, metal members and resin members, such as entrance doors. When it is used as fittings such as exterior members, window frames, and doors, it is preferably made of at least one member selected from metal members and resin members.

The thickness of the adherend may be appropriately selected depending on the application and material, and is preferably 0.1 mm or more and 100 mm or less, more preferably 0.3 mm or more and 5 mm or less, and still more preferably 0.5 mm or more and 3 mm or less.

(adhesive layer)
The adherend and the matte article are preferably attached via an adhesive layer in order to obtain excellent adhesiveness.

The adhesive used for the adhesive layer is not particularly limited, and known adhesives can be used, and may be appropriately selected according to the application. For example, adhesives such as moisture-curable adhesives, anaerobic-curable adhesives, dry-curable adhesives, UV-curable adhesives, heat-sensitive adhesives (e.g., hot-melt adhesives), and pressure-sensitive adhesives are preferred. be done.

Examples of resins used for these adhesives include acrylic resins, urethane resins, vinyl chloride resins, vinyl acetate resins, vinyl chloride-vinyl acetate copolymers, styrene-acrylic copolymers, polyester resins, amide resins, Examples include cyanoacrylate resins and epoxy resins, and these can be used alone or in combination. In addition, a two-liquid curing type urethane-based adhesive or an ester-based adhesive using an isocyanate compound or the like as a curing agent can also be applied.
A pressure-sensitive adhesive can also be used for the adhesive layer. As the adhesive, various adhesives such as acrylic, urethane, silicone, and rubber can be appropriately selected and used.

Although the thickness of the adhesive layer is not particularly limited, it is preferably 1 μm or more and 100 μm or less, more preferably 5 μm or more and 50 μm or less, and still more preferably 10 μm or more and 30 μm or less, in order to obtain excellent adhesiveness.

[Total light transmittance]
The decorative member using the matte article of the present disclosure can be used when the matte article includes a base material, a decorative layer, etc. made of a material that is not transparent as described above, or a cover made of a material that is not transparent. Adhesive material may be adopted, and it may be used for applications such as exterior members and interior members. Considering the above, the total light transmittance of the decorative member using the matte article of the present disclosure, measured in accordance with JIS K7361-1:1997, is preferably 20% or less, more preferably 15% or less, and further Preferably, it is 10% or less.

(Manufacturing method of decorative member)
The decorative member can be manufactured through a step of laminating the matte article of the present disclosure and an adherend.
This step is a step of laminating the adherend and the matte article of the present disclosure. When the matte article of the present disclosure has a substrate, the substrate is laminated so that the surface opposite to the one that exhibits the effect and the moist feel is opposed to the substrate side. Examples of the method for laminating the adherend and the matte article include a lamination method in which the matte article is laminated on a plate-like adherend by pressing with a pressure roller via an adhesive layer.

When using a hot-melt adhesive (also referred to as a “thermal adhesive”) as the adhesive, the heating temperature is preferably 160° C. or higher and 200° C. or lower, depending on the type of resin constituting the adhesive. A temperature of 100° C. or higher and 130° C. or lower is preferable for a heat-resistant hot-melt adhesive. Moreover, in the case of vacuum forming, it is common to carry out while heating, and the temperature is preferably 80° C. or higher and 130° C. or lower, more preferably 90° C. or higher and 120° C. or lower.

The decorative member obtained as described above can be arbitrarily cut, and the surface and the butt end portion can be arbitrarily decorated such as grooving and chamfering using a cutting machine such as a router and a cutter. And various uses, for example, interior members of buildings such as walls, ceilings and floors; exterior members such as outer walls, eaves, roofs, fences and fences; Fittings or fixtures such as rims and malls; General furniture such as chests, shelves, desks; Kitchen furniture such as dining tables and sinks; It is suitably used as a member or the like.

In addition to the decorative members used for the above buildings and the like, the matte article of the present disclosure can be used alone, or in a form in which the matte article is laminated, composited, or combined with another material (adherend material). , packaging materials, whiteboards or blackboards, credit cards, cash cards, telephone cards, various cards such as various certificates, various keyboard keyboards, windows, doors, transparent plates such as partitions (window glass, etc.), artificial It can be used for leather and the like. In these applications, it is preferable that the matte article of the present disclosure, which usually exhibits a matte effect and a moist touch, is placed on the outermost surface, but other uses may be made depending on the application, purpose of use, etc. Of course, it is also possible to have a form.

The present disclosure includes the following [1] to [15].
[1] A matte article having, on at least part of its surface, a surface shape with an Ssk (skewness) of less than 0.00 as defined in ISO25178-2:2012.
[2] The matte article according to [1], wherein the surface profile has an Sku (kurtosis) defined in ISO25178-2:2012 of 3.00 or more.
[3] Rsm (mean length of curve element), which is a lateral parameter of the profile curve defined in JIS B0601:2013 of the surface shape, is 100.00 μm or less in [1] or [2] Matte article as described.
[4] Any one of [1] to [3], wherein Rz (maximum height), which is the peak and height parameter of the contour curve defined in JIS B0601:2013, of the surface shape is 3.00 μm or more. The matte article described in .
[5] Any one of [1] to [4], wherein Ra (arithmetic mean roughness), which is a parameter in the height direction of the contour curve defined in JIS B0601:2013, of the surface shape is 2.00 μm or less. The matte article described in Cr.
[6] The matte article according to any one of [1] to [5], comprising a matte layer, wherein the surface shape is formed by the surface of the matte layer.
[7] The matte article according to [6], wherein the surface of the matte layer forming the surface shape has an uneven shape composed of irregular wrinkles.
[8] According to [7], the irregular wrinkles are composed of a plurality of protrusions formed by a plurality of filamentary protrusions and recesses formed by being surrounded by the plurality of filamentary protrusions. matte article.
[9] The matte layer is composed of a cured resin composition containing a resin and a wrinkle-forming stabilizer, and the wrinkle-forming stabilizer is either 100% or less of the thickness of the matte layer or 30 µm or less. The toner according to any one of [6] to [8], which has an average particle diameter with a smaller upper limit, and contains 0.5 parts by mass or more of the wrinkle-forming stabilizer with respect to 100 parts by mass of the resin. Matte goods.
[10] The matte article according to any one of [1] to [9], which has a substrate.
[11] The matte article according to [10], wherein the substrate is in the form of a sheet.
[12] The matte article according to [11], wherein the matte layer is provided over the entire surface of one surface of the substrate.
[13] The matte article according to any one of [1] to [12], which has a decorative layer.
[14] The matte article according to any one of [1] to [13], wherein the surface shape has a 60° gloss value of 10.0 or less.
[15] The matte article according to any one of [1] to [14], which has a total light transmittance of 20% or less as measured according to JIS K7361-1:1997.

EXAMPLES Next, the present disclosure will be described in more detail with reference to examples, but the present disclosure is not limited by these examples.

(Measurement of surface profile)
Ssk (skewness), Sku (kurtosis), Rsm (average length of curvilinear element), Rz (maximum height) and Ra (arithmetic mean roughness) of the articles obtained in Examples and Comparative Examples are A shape analysis laser microscope ("VK-X150 (control unit) / VK-X160 (measurement unit)", manufactured by Keyence Corporation) is used for a rectangle (1024 μm × 768 μm) at any part of the surface shape, and the objective lens: 50 Double, laser wavelength: 658 nm, measurement mode: surface shape mode, measurement pitch: 0.13 μm, measurement quality: high speed mode.
The cutoff values for Rsm (average length of curvilinear element), Rz (maximum height) and Ra (arithmetic mean roughness) were set to 0.8 mm.

(Evaluation method: 60° gloss value)
For the articles obtained in Examples and Comparative Examples, a gloss meter ("Microgloss (model name)", manufactured by BYK Gardner) was used to measure 60° specular glossiness in accordance with K 5600-4-7: 1999. was measured.

(Evaluation of texture (uniformity of surface condition))
The articles obtained in Examples and Comparative Examples were evaluated for surface texture (uniformity of surface condition) by arbitrary 20 adults, and evaluated according to the following criteria.
A: 18 or more people evaluated that the surface condition was uniform and the visibility of the matte effect was high.
B: 15 or more and 17 or less evaluated that the surface condition was uniform and the visibility of the matte effect was high.
C: 14 or less evaluated that the surface condition was uniform and the visibility of the matte effect was high.

(Evaluation of moist texture)
For the articles obtained in Examples and Comparative Examples, silk (silk) fabric was used as a tactile standard that serves as a standard for moist tactile sensation, and 20 arbitrary adults were asked to evaluate the surface tactile sensation, and the following criteria were used. evaluated.
A: 18 or more persons evaluated that the tactile sensation was close to the standard and that the tactile sensation was moist.
B: 15 or more and 17 or less evaluated that the tactile sensation was close to the standard and that the tactile sensation was moist.
C: 14 or less evaluated that the tactile sensation was close to the standard and that the tactile sensation was moist.

[Example 1]
A corona discharge treated PET sheet (thickness: 100 μm) is used as the base material, and printing ink (binder resin: two-liquid curing acrylic-urethane resin) is applied to one side of the base material by the gravure method for coloring. A layer (thickness: 3 μm) is provided, and a primer layer (thickness: 2 μm) is provided by applying a resin composition containing an acrylic resin and a urethane resin as a binder resin on the colored layer. Resin composition for layer formation (polyfunctional urethane (meth) acrylate oligomer (tetrafunctional, average molecular weight: 1800): 65 parts by mass, multifunctional acrylate monomer (difunctional, molecular weight: 400): 35 parts by mass, stable wrinkle formation Agent 1 (silica particles, average particle size: 3 μm): 3.0 parts by mass, wrinkle formation stabilizer 2 (silica particles, average particle size: 5 nm): 3.0 parts by mass, photoinitiator (benzophenone type): 0.8 parts by mass) was applied by a gravure method (coating amount: 5 g/m ² (dry)), and then irradiated with ultraviolet rays using a UV irradiation device composed of LEDs (wavelength: 395 nm, amount of ultraviolet rays : 6 W/cm ² ), and then irradiated with ultraviolet rays using an excimer light irradiation device (wavelength: 172 nm (Xe ₂ ), ultraviolet output density: 1 W/cm, integrated light amount: 10 to 100 mJ/cm ² , nitrogen atmosphere (oxygen Concentration of 200 ppm or less)), and then further irradiation using a high-pressure mercury lamp (ultraviolet light output density: 200 W/cm) to provide a matte layer on the substrate to obtain a patterned sheet having the substrate and the matte layer. rice field.

Next, phenol-impregnated kraft paper (manufactured by Ohta Sangyo Co., Ltd., obtained by impregnating kraft paper with a basis weight of 200 g/m ² with 30% by mass of phenolic resin), and black titanium paper as a decorative layer (basis weight of 80 g/m ² ). ), overlay paper (obtained by impregnating paper (manufactured by Mead Co.) with a basis weight of 22 g/m ² with 300% by mass of methylol melamine resin (manufactured by Cymel Co.)), phenol-impregnated kraft paper, black titanium After stacking the paper and the overlay paper in this order, and further stacking the overlay paper and the surface having the surface shape of the pattern transfer sheet so that they are in contact with each other, they were sandwiched between end plates, and a pressure of 7.8 MPa (80 kg/cm ² ) was applied. Heat-processing molding was performed at a temperature of 145° C. for 30 minutes, and the resin was permeated, cured, and integrated to obtain a thermosetting resin decorative board (high-pressure melamine decorative board) as a matte product.
When the 60° gloss value of the obtained matte article was measured from the matte layer side, it was 1.5. In addition, the surface profile was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 1.

[Example 2]
In Example 1, application was carried out in the same manner as in Example 1 except that the resin contained in the resin composition for forming the matte layer was 90 parts by mass of polyfunctional urethane acrylate oligomer and 10 parts by mass of monofunctional acrylate monomer. Got a template sheet. The resulting shaped sheet itself was used as the matte article of Example 2. When the 60° gloss value of the obtained matte article was measured from the matte layer side, it was 1.6. In addition, the surface shape was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 1.

[Comparative Example 1]
In Example 1, the amount of the wrinkle-forming stabilizer in the resin composition for forming the matte layer was changed to 0 parts by mass, that is, the wrinkle-forming stabilizer was not used. , to obtain a shaped sheet. The obtained embossed sheet itself was used as the article of Comparative Example 1, and the 60° gloss value, surface shape measurement, and texture and tactile evaluation of the article were performed by the above-described methods. These results are shown in Table 1.

[Comparative Example 2]
In Example 1, the amount of the wrinkle-forming stabilizer used in the resin composition for forming the matte layer was set to 0 parts by mass, and 15.0 parts by mass of the matte agent (average particle size: 8.0 µm) was used instead. A patterned sheet was obtained in the same manner as in Example 1, except that only the electron beam (acceleration voltage: 75 kV, irradiation dose: 30 kGy (3 Mrad)) was applied. The obtained embossed sheet itself was used as the article of Comparative Example 2, and the 60° gloss value, the surface shape measurement, and the texture and tactile sensation of the article were evaluated by the methods described above. These results are shown in Table 1.

[Comparative Example 3]
A corona discharge-treated polypropylene sheet (thickness: 100 μm) is used as the base material, and printing ink (binder resin: two-liquid curing acrylic-urethane resin) is applied to one side of the base material by the gravure method for coloring. A layer (thickness: 3 μm) is provided, and a primer layer (thickness: 2 μm) is provided by applying a resin composition containing an acrylic resin and a urethane resin as a binder resin on the colored layer. Resin composition for layer formation (polyfunctional urethane acrylate oligomer (tetrafunctional, average molecular weight: 1800): 65 parts by mass, polyfunctional acrylate monomer (bifunctional, molecular weight: 400): 35 parts by mass, wrinkle-forming stabilizer 1 ( silica particles, average particle size: 3 μm): 3.0 parts by mass, wrinkle-forming stabilizer 2 (silica particles, average particle size: 5 nm): 3.0 parts by mass, photopolymerization initiator (benzophenone type): 0.8 parts by mass) was applied by a gravure method (coating amount: 5 g/m ² (dry)), and then irradiated with ultraviolet rays using an excimer light irradiation device (wavelength: 172 nm (Xe ₂ ), ultraviolet power density: 1 W /cm, cumulative light intensity: 10 to 100 mJ/cm ² , nitrogen atmosphere (oxygen concentration: 200 ppm or less)), and then further irradiation using a high-pressure mercury lamp (ultraviolet power density: 200 W/cm) to form a matte layer on the substrate. was provided to obtain a matte article having a substrate and a matte layer. When the 60° gloss value of the obtained matte article was measured from the matte layer side, it was 1.6. In addition, the surface shape was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 2.

[Comparative Example 4]
A matte article was obtained in the same manner as in Comparative Example 3, except that a paper substrate (thickness: 30 μm) was used as the substrate. Table 2 shows the 60° gloss value and texture evaluation of the matte layer side of the obtained matte article. In addition, the surface shape was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 2.

[Comparative Example 5]
A matte article was obtained in the same manner as in Comparative Example 3, except that only a polyfunctional acrylate monomer (bifunctional) was used as the resin in the resin composition for forming the matte layer. Table 2 shows the 60° gloss value and texture evaluation of the matte layer side of the obtained matte article. In addition, the surface shape was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 2.

[Comparative Example 6]
A corona discharge-treated polypropylene sheet (thickness: 100 μm) is used as the base material, and printing ink (binder resin: two-liquid curing acrylic-urethane resin) is applied to one side of the base material by the gravure method for coloring. A layer (thickness: 3 μm) is provided, and a primer layer (thickness: 2 μm) is provided by applying a resin composition containing an acrylic resin and a urethane resin as a binder resin on the colored layer. Resin composition for layer formation (polyfunctional urethane acrylate oligomer 1 (tetrafunctional, average molecular weight: 1800): 65 parts by mass, polyfunctional acrylate monomer (bifunctional, molecular weight: 400): 35 parts by mass, wrinkle-forming stabilizer 1 (silica particles, average particle size: 3 μm): 3.0 parts by mass, wrinkle-forming stabilizer 2 (silica particles, average particle size: 5 nm): 3.0 parts by mass, photopolymerization initiator (benzophenone type): 0. 8 parts by mass) was applied by a gravure method (coating amount: 5 g/m ² (dry)), and then irradiated with ultraviolet rays using a UV irradiation device composed of LEDs (wavelength: 395 nm, ultraviolet amount: 6 W /cm ² ), and then irradiated with ultraviolet rays using an excimer light irradiation device (wavelength: 172 nm (Xe ₂ ), ultraviolet output density: 1 W/cm, integrated light amount: 10 to 100 mJ/cm ² , nitrogen atmosphere (oxygen concentration: 200 ppm). below)), and then further irradiated with a high-pressure mercury lamp (ultraviolet power density: 200 W/cm) to provide a matte layer on the substrate to obtain a matte article having the substrate and the matte layer. When the 60° gloss value of the obtained matte article was measured from the matte layer side, it was 1.4. In addition, the surface profile was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 3.

[Comparative Examples 7 to 11]
In Comparative Example 6, the wrinkle-forming stabilizer in the resin composition for forming the matte layer was used in the amount shown in Table 3, the resin composition for forming the matte layer used, and the base material were compared. A matte article was obtained in the same manner as in Example 6. Polyfunctional urethane acrylate oligomer 2 used in Comparative Examples 10 and 11 is an oligomer having 3 functional groups. Table 3 shows the 60° gloss value and texture evaluation of the matte layer side of the obtained matte article. In addition, the surface shape was measured and texture and tactile sensation were evaluated by the above methods. These results are shown in Table 3.

From the results in Table 1, the matte article of the present disclosure has a 60° gloss value of 1.5 and 1.6 on the matte layer side, and is an article with extremely excellent visibility of the matte effect. It was confirmed that the texture was excellent. In addition, it was confirmed that the moist texture was also excellent.
On the other hand, the article of Comparative Example 1, which did not contain a wrinkle-forming stabilizer, had some wrinkles on its surface, but the visibility of the matting effect was not stably obtained, and the gloss value was partially improved. Although the same parts as in the example were present, there were some highly glossy parts, the surface condition was unstable (not uniform), and the texture could not be said to be excellent. In addition, the articles of Comparative Examples 1 and 2 lacked a moist feel, and rather had a rough feel.

FIG. 7 is an optical microscope image of the matte article of Example 1 (corresponding to an image with a width of 272.0 μm. The same applies to the image of Comparative Example 2). According to the optical microscope image (FIG. 7) of the matte article of Example 1, it can be confirmed that the surface has irregular wrinkles. On the other hand, according to the optical microscope image (FIG. 8) of Comparative Example 1, as described above, there are some wrinkles on the surface, and although there are some areas with wrinkles similar to those of Examples, It can be seen that wrinkle formation is unstable (not uniform) and intermingled with areas without wrinkles. Further, according to the optical microscope image (FIG. 9) of Comparative Example 2, wrinkles like those of the matte article of Example were not confirmed, and a convex shape corresponding to the contour shape of the matting agent was confirmed. The state was unstable (not uniform), and the texture was not excellent.
From the above results, the matte article of the present disclosure exhibits a specific surface shape due to wrinkles on the surface, and due to the surface shape, it has extremely excellent matte effect visibility and texture. , it was confirmed that the product had an excellent moist touch.

The articles of Comparative Examples 3 to 5 have a 60° gloss value of 1.4 to 1.6 on the matte layer side. was confirmed to be. However, it did not have a moist touch, but rather had a rough touch.

The products of Comparative Examples 6 to 11 had a 60° gloss value of 1.4 on the matte layer side, and the products were excellent in the visibility of the matte effect and in texture. was confirmed. However, it did not have a moist touch, but rather had a dry touch.

The matte article of the present disclosure has excellent visibility and texture of the matte effect, and is excellent in moist touch, so that it can be used for various purposes, such as interior members of buildings such as walls, ceilings, and floors. Exterior materials such as exterior walls, eaves, roofs, fences, and fences; Fittings or fixtures such as window frames, doors, door frames, handrails, baseboards, rims, and malls; Chests, shelves, desks, etc. general furniture; kitchen furniture such as dining tables and sinks; surface decorative boards for cabinets such as household appliances and OA equipment; decorative members for various members such as interior and exterior members for vehicles.
In addition to the decorative members used in the above buildings and the like, the matte article of the present disclosure can be used alone, or in a form in which the matte article is laminated, composited, or combined with another material (adherend material). , packaging materials, whiteboards or blackboards, credit cards, cash cards, telephone cards, various cards such as various certificates, various keyboard keyboards, windows, doors, transparent plates such as partitions (window glass, etc.), artificial It is also suitable for use as leather or the like.

1: matte article 2: concave portion 3: convex portion (protruding portion)
4: Matte layer 5: Base material 6: Decorative layer 6a: Colored layer 6b: Pattern layer 7: Adhesive layer 8: Transparent resin layer 9: Primer layer

Claims (1)

A matte article having, on at least a part of its surface, a surface profile with an Ssk (skewness) of less than 0.00 as defined in ISO25178-2:2012.

Images