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

Patent metadata

Field	Value
Publication number	US-2022168991-A1
Application number	US-202017442185-A
Country	US
Kind code	A1
Filing date	Mar 19, 2020
Priority date	Mar 27, 2019
Publication date	Jun 2, 2022
Grant date	—

Abstract

The present invention provides a transparent resin film that has excellent embossability and is capable of reducing or preventing air entrainment to provide high design quality, a decorative material including the transparent resin film, and a method for producing a decorative material. The present invention relates to a transparent resin film to be laminated on a substrate including a picture layer, the transparent resin film including at least a base layer and a top layer sequentially from a side to be laminated on the substrate, the transparent resin film having a pattern of protrusions and depressions on a side opposite to the side to be laminated on the substrate, the base layer having a lower softening temperature than the top layer.

First claim

1 . A transparent resin film to be laminated on a substrate including a picture layer, the transparent resin film comprising at least a base layer and a top layer sequentially from a side to be laminated on the substrate,
the transparent resin film having a pattern of protrusions and depressions on a side opposite to the side to be laminated on the substrate, the base layer having a lower softening temperature than the top layer.

2 . The transparent resin film according to claim 1 ,
wherein the base layer has a softening temperature of 100° C. or higher and 150° C. or lower.

3 . The transparent resin film according to claim 1 ,
wherein the top layer has a softening temperature of 130° C. or higher and 160° C. or lower.

4 . The transparent resin film according to claim 1 , having a maximum height Rz defined in JIS B 0601 (2001) of 80 μm or less on the side to be laminated on the substrate.

5 . The transparent resin film according to claim 1 , further comprising a surface protective layer on an opposite side of the top layer to the base layer.

6 . The transparent resin film according to claim 1 ,
wherein at least one layer of the base layer or the top layer contains a flame retardant.

7 . The transparent resin film according to claim 6 ,
wherein the at least one layer containing the flame retardant, of the base layer and the top layer, contains a filler.

8 . The transparent resin film according to claim 5 ,
wherein the surface protective layer contains a flame retardant.

9 . The transparent resin film according to claim 6 ,
wherein the flame retardant is at least one selected from the group consisting of a phosphinic acid metal salt-based flame retardant, a phosphazene-based flame retardant, and NOR hindered amine-based flame retardant.

10 . A decorative material comprising:
a substrate including a picture layer; and the transparent resin film according to claim 1 laminated on the substrate.

11 . A method for producing a decorative material, comprising:
laminating the transparent resin film according to claim 1 on a substrate including a picture layer at a temperature not lower than the softening temperature of the base layer and not higher than the softening temperature of the top layer.

12 . A method for producing a decorative material comprising a substrate including a picture layer and the transparent resin film according to claim 1 sequentially, the method comprising:
forming a transparent adhesive layer on a side to be laminated on the picture layer of the transparent resin film; and
bonding the transparent resin film and the picture layer with the transparent adhesive layer.

13 . The transparent resin film according to claim 2 ,
wherein the top layer has a softening temperature of 130° C. or higher and 160° C. or lower.

14 . The transparent resin film according to claim 2 , having a maximum height Rz defined in JIS B 0601 (2001) of 80 μm or less on the side to be laminated on the substrate.

15 . The transparent resin film according to claim 2 , further comprising a surface protective layer on an opposite side of the top layer to the base layer.

16 . The transparent resin film according to claim 2 ,
wherein at least one layer of the base layer or the top layer contains a flame retardant.

17 . The transparent resin film according to claim 7 ,
wherein the flame retardant is at least one selected from the group consisting of a phosphinic acid metal salt-based flame retardant, a phosphazene-based flame retardant, and NOR hindered amine-based flame retardant.

18 . A decorative material comprising:
a substrate including a picture layer; and the transparent resin film according to claim 2 laminated on the substrate.

19 . A method for producing a decorative material, comprising:
laminating the transparent resin film according to claim 2 on a substrate including a picture layer at a temperature not lower than the softening temperature of the base layer and not higher than the softening temperature of the top layer.

20 . A method for producing a decorative material comprising a substrate including a picture layer and the transparent resin film according to claim 2 sequentially, the method comprising:
forming a transparent adhesive layer on a side to be laminated on the picture layer of the transparent resin film; and
bonding the transparent resin film and the picture layer with the transparent adhesive layer.

Assignees

• Dainippon Printing Co Ltd

Inventors

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

Classifications

• B32B2307/712

  Weather resistant · CPC title

• B32B2307/584

  Scratch resistance · CPC title

• B32B2250/24

  All layers being polymeric · CPC title

• B32B2250/02

  2 layers · CPC title

• B32B7/02

  Physical, chemical or physicochemical properties · CPC title