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CN-117083175-B - Extinction article

CN117083175BCN 117083175 BCN117083175 BCN 117083175BCN-117083175-B

Abstract

The present invention provides a matt article which has excellent visibility and texture of a matt effect and is excellent in rough touch. The matting article has a surface shape in which Spc (arithmetic mean curvature of the apex of the protrusion) is larger than 4000mm ‑1 and Rsm (mean length of the curved elements) defined in JIS B0601:2013 is 30 μm or more at least on a part of the surface.

Inventors

  • NISHIGAKI RYOSUKE
  • Xigen Xiangtai
  • Toi Reiko

Assignees

  • 大日本印刷株式会社

Dates

Publication Date
20260508
Application Date
20220328
Priority Date
20210330

Claims (7)

  1. 1. An extinction article having a surface shape in which an arithmetic average curvature of a projection apex, which is a protrusion apex, is greater than 4000mm -1 , and an average length of a curve element, which is an Rsm specified in JIS B0601:2013, is 30 [ mu ] m or more, at least a part of the surface, wherein the arithmetic average curvature of the projection apex is an average curvature of a tip end portion of the peak apex, which is a protrusion apex, obtained from an arithmetic average of curvature radii of peak apexes of portions classified as peaks in a body image included in a reference region, and the average curvature is an average sharpness, The matting article comprises a matting layer, the surface shape being formed by the surface of the matting layer, The surface of the matting layer forming the surface shape has a concave-convex shape composed of irregular wrinkles composed of concave portions and a plurality of convex portions formed of a plurality of line protrusions, the concave portions being formed by being surrounded by the plurality of line protrusions, The matting layer is formed from a cured product of a resin composition containing a resin and a wrinkle-forming stabilizer, The resin composition contains a polyfunctional urethane (meth) acrylate oligomer as a polymerizable oligomer and a polyfunctional (meth) acrylate as a polymerizable monomer, the content of the polymerizable oligomer being 60 parts by weight or more relative to 100 parts by weight of the total of the polymerizable oligomer and the polymerizable monomer, The matting layer is formed by irradiating at least an excimer light to the layer of the resin composition containing the resin and the wrinkle-forming stabilizer, The matt article has a substrate and paper is used as the substrate.
  2. 2. The matting article according to claim 1, wherein the peak of the profile curve and the maximum height of the height parameter Rz specified in JIS B0601:2013 of the surface shape are 8.00 μm or more and 30.00 μm or less.
  3. 3. The matted article according to claim 1 or 2, wherein an arithmetic average roughness, which is a parameter Ra in a height direction of a profile curve specified in JIS B0601:2013 of the surface shape, is 1.00 μm or more and 5.50 μm or less.
  4. 4. The matted article according to claim 1, wherein the wrinkle-forming stabilizer has an average particle diameter having a smaller one of 100% or less and 30 μm or less of the thickness of the matted layer as an upper limit, and the matted layer contains 0.5 parts by mass or more of the wrinkle-forming stabilizer relative to 100 parts by mass of the resin.
  5. 5. A matting article as defined in claim 1, wherein the substrate is sheet-like.
  6. 6. A matting article as defined in claim 5, wherein the matting layer is provided over the whole of one face of the substrate.
  7. 7. A matting article as defined in claim 1, wherein the surface profile has a 60 ° gloss value of 10.0 or less.

Description

Extinction article Technical Field The present invention relates to matt articles. Background Conventionally, as articles for decorating and protecting surfaces of interior members, outer walls, eave ceilings, roofs, fences, and other exterior members of buildings such as walls, ceilings, floors, and the like, door and window equipment or finishing members such as window frames, doors, door frames, armrests, rails, peripheral edges, molding, and the like, general furniture such as wardrobes, shelves, tables, and the like, kitchen furniture such as dining tables, tanks, and the like, surface decorative plates such as housings of home appliances, OA equipment, and the like, and surfaces of interior or exterior members of vehicles, so-called decorative materials, decorative sheets, and the like have been used. As such a decorative material, for example, a decorative material having a surface layer having a desired function is used. In order to improve the design of a decorative material used for these applications, a method of improving the texture by using a matting effect (matte effect) is common. As a decorative material utilizing the matting effect, for example, patent document 1 proposes a decorative sheet having a pattern layer and a shielding layer on one surface of a base sheet and a gloss adjusting layer (matte layer, gloss layer) on the other surface. In the decorative sheet of patent document 1, the design effect of highlighting the pattern layer and the masking layer is obtained by the difference in gloss between the matte layer and the gloss layer of the gloss adjusting layer, and in the example thereof, a matte ink in which a total of 50 parts by weight of a matting agent, which is a spherical alumina 10 parts by weight and a calcium carbonate 40 parts by weight, is added to 100 parts by weight of a resin component, is used in the matte layer provided on the entire surface. Patent document 2 proposes a decorative material comprising a base material, a printed layer and a transparent resin layer in this order, wherein an embossed pattern is applied to the outermost surface of the transparent resin layer. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2000-062081 Patent document 2 Japanese patent application laid-open No. 2011-073207 Disclosure of Invention Problems to be solved by the invention As a method for improving the texture by the matting effect (matte effect), there are mainly a method for obtaining the matting effect by the light diffusion effect of the matting agent (MATTING AGENT, also referred to as "matte agent") used in the above-described patent document 1, a method for forming the uneven shape on the outermost surface by performing embossing as in the above-described patent document 2, and the like. However, when a matting agent is used as in patent document 1, the amount of the matting agent to be used needs to be increased in order to make the effect of the matting agent more excellent, but as the amount of the matting agent to be used increases, the coating film is damaged and the scratch resistance is lowered due to the falling off of the matting agent from the coating film, and further, damage is easily noticeable due to a change in gloss caused by the absence of the matting agent or a contaminant permeates into a minute gap at the interface between the matting agent and the resin, and further, the contaminant adsorbs to the matting agent itself and the stain resistance is lowered, and the like, whereby the surface characteristics tend to be lowered. On the other hand, if the amount of the additive is reduced in order to suppress the reduction of the surface characteristics, the extinction effect tends to be reduced, and the surface characteristics and the extinction effect are in a legally inverse relationship. Therefore, the matte effect using the matting agent is limited. In addition, in the case of using embossing as in patent document 2, the production of an embossed printing plate is not easy to carry out because of the great effort, and it is necessary to produce a printing plate for each desired pattern. Therefore, it cannot be said that the method is easy to sufficiently cope with the diversity of the customer demands. However, the diversity of customer demands is involved in many aspects, and not only the above-described visual matting effect but also the tactile sensation expression are required. For example, when the matting agent as described in patent document 1 is used, the outline of the matting agent is exposed on the surface of the decorative sheet by increasing the amount of the matting agent, and thus a slightly inferior surface touch, that is, a "rough" touch may be perceived. In addition, when embossing is used as in patent document 2, there is a case where a touch feeling caused by the concave-convex shape of the surface formed by the embossing plate is exhibited. However, in any case, the feeling of touch is not