Transparent resin film, transparent resin film production method, and decorative material

Patent metadata

Field	Value
Publication number	US-11993063-B2
Application number	US-202017603120-A
Country	US
Kind code	B2
Filing date	Mar 19, 2020
Priority date	Apr 18, 2019
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

The invention provides a transparent resin film that has a smooth surface on a side to be laminated on a substrate to prevent entering of air bubbles when bonded to a substrate and has a pattern of protrusions and depressions on a side opposite to the side to be laminated on a substrate to provide high design quality, a method for producing the transparent resin film, and a decorative material. The invention relates to a transparent resin film to be laminated on a substrate including a picture layer, the transparent resin film having a pattern of protrusions and depressions with a maximum height Rz of 20 μm or higher and 200 μm or lower on a side opposite to a side to be laminated on the substrate, the transparent resin film having a maximum height Rz of 20 μm or lower on the side to be laminated on the substrate.

First claim

The invention claimed is:

1. A transparent resin film to be laminated on a substrate including a picture layer,
the transparent resin film having a pattern of protrusions and depressions with a maximum height Rz (1) defined in JIS B 0601 (2001) of 20 μm or higher and 200 μm or lower on a side opposite to a side to be laminated on the substrate,
the transparent resin film having a maximum height Rz (2) defined in JIS B 0601 (2001) of 15 μm or lower on the side to be laminated on the substrate.

2. The transparent resin film according to claim 1 , comprising at least multiple transparent resin layers.

3. The transparent resin film according to claim 1 , comprising a surface protective layer on the side opposite to the side to be laminated on the substrate.

4. The transparent resin film according to claim 1 , containing a flame retardant.

5. The transparent resin film according to claim 4 ,
wherein a layer containing the flame retardant in the transparent resin film contains a filler.

6. The transparent resin film according to claim 3 ,
wherein the surface protective layer contains a flame retardant.

7. The transparent resin film according to claim 4 ,
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 a NOR hindered amine-based flame retardant.

8. A method for producing a transparent resin film to be laminated on a substrate including a picture layer, the method comprising:
laminating multiple transparent resin layers by thermal lamination to provide a laminate while embossing a side of the laminate opposite to a side to be laminated on the substrate to form a pattern of protrusions and depressions having a maximum height Rz (1) defined in JIS B 0601 (2001) of 20 μm or higher and 200 μm or lower on the side opposite to the side to be laminated on the substrate,
the transparent resin film having a maximum height Rz (2) defined in JIS B 0601 (2001) of 15 μm or lower on the side to be laminated on the substrate.

9. The method for producing a transparent resin film according to claim 8 ,
wherein the embossing is performed using a press roll having a type D durometer hardness defined in JIS K 6253-3 (2012) of 25 or more and 50 or less.

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. The transparent resin film according to claim 2 , comprising a surface protective layer on the side opposite to the side to be laminated on the substrate.

12. The transparent resin film according to claim 2 , containing a flame retardant.

13. The transparent resin film according to claim 3 , containing a flame retardant.

14. The transparent resin film according to claim 12 ,
wherein a layer containing the flame retardant in the transparent resin film contains a filler.

15. The transparent resin film according to claim 13 ,
wherein a layer containing the flame retardant in the transparent resin film contains a filler.

16. The transparent resin film according to claim 11 ,
wherein the surface protective layer contains a flame retardant.

17. The transparent resin film according to claim 5 ,
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 a NOR hindered amine-based flame retardant.

18. 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 a NOR hindered amine-based flame.

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

20. A decorative material comprising:
a substrate including a picture layer; and
the transparent resin film according to claim 3 laminated on the substrate.

Assignees

• Dainippon Printing Co Ltd

Inventors

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

Classifications

• B32B3/30 Primary

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B27/08

  of synthetic resin · CPC title

• B32B27/16

  specially treated, e.g. irradiated · CPC title

• B32B27/20

  using fillers, pigments, thixotroping agents · CPC title