Transparent resin film, decorative board, and method for producing decorative board

Patent metadata

Field	Value
Publication number	US-12338634-B2
Application number	US-201917283679-A
Country	US
Kind code	B2
Filing date	Sep 30, 2019
Priority date	Oct 12, 2018
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

The present invention provides a transparent resin film excellent in weather resistance even in a case where a pattern of protrusions and depressions is formed on the surface for the purpose of imparting excellent design properties, a decorative board including the transparent resin film, and a method for producing the decorative board. Provided is a transparent resin film for protecting a picture layer on one side of a substrate, including at least: a surface protective layer; and a transparent resin layer, laminated on each other, the transparent resin film having a pattern of protrusions and depressions on a surface protective layer side, the transparent resin film having a thickness at a depression of the pattern of protrusions and depressions of 100 μm or larger, the transparent resin film containing an ultraviolet absorber.

First claim

The invention claimed is:

1. A decorative board comprising:
a substrate;
a picture layer;
an adhesive layer; and
a transparent resin film in an order in a thickness direction as stated below,
the transparent resin film for protecting the picture layer laminated on one side of the substrate, comprising at least:
a surface protective layer;
a transparent resin layer, and
an adhesion primer layer on a side opposite to the surface protective layer side of the transparent resin layer, wherein
the transparent resin film having a pattern of protrusions and depressions on the surface protective layer side and on the picture layer side,
the transparent resin film having a thickness at a depression of the pattern of protrusions and depressions of 140 μm or larger,
the transparent resin film containing an ultraviolet absorber,
the surface protective layer containing an oligomer having a radical polymerizable unsaturated group in the molecule, and
the picture layer does not have a pattern of protrusions and depressions synchronized to the pattern of protrusions and depressions of the picture layer side of the transparent resin film.

2. The decorative board according to claim 1 ,
wherein the ultraviolet absorber is contained in at least one of the surface protective layer or the transparent resin layer.

3. The decorative board according to claim 1 ,
wherein the adhesion primer layer has a thickness of 0.5 μm or larger and 10 μm or smaller.

4. The decorative board according to claim 1 ,
wherein the ultraviolet absorber is a triazine ultraviolet absorber.

5. A method for producing the decorative board according to claim 1 , the method comprising:
forming an adhesive layer on a picture layer side surface of a transparent resin film; and
bonding the transparent resin film and the picture layer with the adhesive layer.

6. The decorative board according to claim 2 ,
wherein the ultraviolet absorber is a triazine ultraviolet absorber.

7. The decorative board according to claim 3 ,
wherein the ultraviolet absorber is a triazine ultraviolet absorber.

8. A method for producing the decorative board according to claim 2 , the method comprising:
forming an adhesive layer on a picture layer side surface of a transparent resin film; and
bonding the transparent resin film and the picture layer with the adhesive layer.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Furuta Satoshi
• Fujii Ryo
• Nakajima Tomomi
• Netsu Yoshiaki
• Kayahara Toshinaru
• Sumida Yosuke

Classifications

• E04F13/0866 Primary

  composed of several layers, e.g. sandwich panels or layered panels (layered products as such in general B32B; producing decorative panels or veneers B44C5/04; E04F13/0864, E04F13/0875 take precedence) · CPC title

• B44C5/0469

  comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper · CPC title

• B32B2451/00

  Decorative or ornamental articles · CPC title

• B32B2307/732

  Dimensional properties · CPC title

• B32B2307/71

  Resistive to light or to UV · CPC title