CN-122008658-A - Decorative sheet and decorative material

Abstract

A decorative sheet comprising a colored base layer and a transparent thermoplastic resin layer laminated on one surface of the colored base layer, wherein the colored base layer contains a biomass-derived polyolefin and has a density in the range of 0.92g/cm 3 to 1.12g/cm 3 . The invention also provides a decorative material comprising the decorative sheet.

Inventors

• Funaga Takashi
• ORIHARA TAKASHI
• Ming Shicai
• Fujinami Tomoko
• KUWAMURA KENSUKE
• NOGUCHI SHOTA

Assignees

• 凸版印刷株式会社

Dates

Publication Date

20260512

Application Date

20220307

Priority Date

20210324

Claims (9)

1. 1. A decorative sheet comprising a colored base layer and a transparent thermoplastic resin layer laminated on one surface of the colored base layer, The colored substrate layer contains a biomass-derived polyolefin and has a density in the range of 0.92g/cm 3 to 1.12g/cm 3 .
2. 2. The decorative sheet according to claim 1, wherein, The transparent thermoplastic resin layer has a density in the range of 0.92g/cm 3 to 0.99g/cm 3 .
3. 3. The decorative sheet according to claim 1, wherein, When the thickness of the transparent thermoplastic resin layer is t1 and the thickness of the colored base material layer is t2, t 2≤t1 is satisfied and t1/t2 is in the range of 1.1 to 3.
4. 4. The decorative sheet according to claim 1, wherein, When the density of the transparent thermoplastic resin layer is d1 and the density of the colored base material layer is d2, d2> d1 is satisfied.
5. 5. The decorative sheet according to claim 1, wherein, The colored base material layer and the transparent thermoplastic resin layer are each a resin layer formed from a resin composition containing a biomass-derived polyolefin obtained by polymerizing a biomass-derived olefin-containing monomer.
6. 6. The decorative sheet according to claim 1, wherein, The layer of at least one of the transparent thermoplastic resin layer and the colored substrate layer contains biomass-derived high-density polyethylene and biomass-derived low-density polyethylene as the biomass-derived polyolefin.
7. 7. The decorative sheet according to claim 5 or claim 6, wherein, The transparent thermoplastic resin layer contains, as the biomass-derived polyolefin, a polyethylene obtained by blending a biomass-derived high-density polyethylene and a biomass-derived low-density polyethylene in the range of 100:0 to 20:80.
8. 8. The decorative sheet according to claim 1, wherein, The colored base material layer contains a biomass-derived high-density polyethylene and a low-density polyethylene as the biomass-derived polyolefin, and the biomass degree is in the range of 10% to 90%.
9. 9. A decorative material is provided with: Substrate and method for producing the same The decorative sheet of any one of claims 1 to 8 laminated on at least one face of the base material.

Description

Decorative sheet and decorative material The present patent application is a divisional application of patent application with application number 2022800234295, application day 2022, 3, 7, and the name of "decorative sheet and decorative material". Technical Field The present invention relates to a decorative sheet and a decorative material. Background As a decorative sheet that replaces a decorative sheet made of polyvinyl chloride, for example, as disclosed in patent document 1, a decorative sheet using an olefin resin has been proposed. Prior art literature Patent literature Patent document 1 Japanese patent laid-open publication No. 2014-188941 Disclosure of Invention Problems to be solved by the invention In recent years, from the background of environmental problems, there is a demand for replacing a material of a decorative sheet with a material derived from a plant from petroleum as a conventional material. However, when biomass polyethylene is used as a plant-derived material that can be used for a decorative sheet, there is a problem that the surface hardness is reduced in order to be used as a decorative sheet. In view of the above-described problems, an object of the present invention is to provide a decorative sheet and a decorative material capable of suppressing a decrease in surface hardness even when formed using a plant-derived material. Means for solving the problems In order to solve the above problems, one embodiment of the present invention is a decorative sheet comprising a colored base layer and a transparent resin layer laminated on one surface of the colored base layer, wherein the transparent resin layer is formed using a resin composition containing a plant-derived high-density polyethylene, and a nucleating agent (nucleating agent) is added to the resin composition containing the high-density polyethylene. In order to solve the above problems, one embodiment of the present invention is a decorative material comprising a base material and a decorative sheet laminated on at least one surface of the base material. ADVANTAGEOUS EFFECTS OF INVENTION According to one embodiment of the present invention, a decorative sheet and a decorative material that can suppress a decrease in surface hardness even when formed using a plant-derived material, that is, a plant-derived high density polyethylene, can be provided. Drawings Fig. 1 is a cross-sectional view showing the constitution of a decorative sheet and a decorative material in embodiment 1 of the present invention. Detailed Description Hereinafter, embodiments of the present technology will be described with reference to the drawings. In the description of the drawings, the same or similar portions are denoted by the same or similar symbols, and repetitive description thereof will be omitted. The drawings are schematic and include situations differing from the actual situations. The embodiments shown below exemplify an apparatus or method for embodying the technical idea of the present technology, which is not specific to the apparatus or method exemplified in the embodiments described below. The technical idea of the present technology can be variously modified within the technical scope described in the claims. The directions "left and right" and "up and down" in the following description are defined for convenience of description, and do not limit the technical idea of the present invention. Thus, for example, if the paper is rotated 90 degrees, the "left and right" and "up and down" are swapped for reading, and if the paper is rotated 180 degrees, the "left" is naturally changed to the "right" and the "right" is changed to the "left". (Embodiment 1) The structure of the decorative material 10 will be described below with reference to fig. 1. As shown in fig. 1, the decorative material 10 includes a decorative sheet 1 and a base material 9. The specific configuration of the decorative sheet 1 will be described later. The base material 9 is formed into a plate shape using, for example, a wooden plate, an inorganic plate, a metal plate, or the like, and the decorative sheet 1 is laminated on one surface (the upper surface in fig. 1). That is, the decorative material 10 includes the base material 9 and the decorative sheet 1 laminated on one surface of the base material 9. (Construction of decorative sheet) As shown in fig. 1, the decorative sheet 1 includes a colored base material layer 2, a pattern layer 3, an adhesive layer 4, a transparent resin layer 5, a surface protection layer 6, a concave-convex portion 7, and a primer layer 8. < Colored substrate layer > The colored base material layer 2 is formed using a thermoplastic resin. As the thermoplastic resin forming the colored base material layer 2, for example, a polyolefin-based resin of colored thermoplastic can be used. Examples of the polyolefin resin include polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, e