Decorative molding sheet, preform molding body, and decorative molded body

Patent metadata

Field	Value
Publication number	US-11370202-B2
Application number	US-201815733234-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Jan 9, 2018
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

A decorative molding sheet including: an artificial leather substrate that includes a non-woven fabric containing ultrafine fibers with an average fineness of 0.001 to 1 dtex and an elastic polymer applied in the non-woven fabric, and that has a leather-like finished surface; and a resin layer that is formed on a back surface of the artificial leather substrate relative to the leather-like finished surface, and that contains a vinyl chloride-vinyl acetate copolymer, and a preform molded body obtained by shaping the decorative molding sheet into a three-dimensional shape are used.

First claim

The invention claimed is:

1. A decorative molding sheet, comprising:
an artificial leather substrate that includes a non-woven fabric containing ultrafine fibers with an average fineness of 0.001 to 1 dtex and an elastic polymer applied in the non-woven fabric, and that has a leather-like finished surface; and
a resin layer that is formed on a back surface of the artificial leather substrate relative to the leather-like finished surface, and that contains a vinyl chloride-vinyl acetate copolymer,
wherein an amount of the resin layer containing the vinyl chloride-vinyl acetate copolymer, per unit area of a surface on which the resin layer is formed is 25 to 200 g/m 2 .

2. The decorative molding sheet according to claim 1 ,
wherein a vinyl acetate unit content in the vinyl chloride-vinyl acetate copolymer is 5 to 25 mol %.

3. The decorative molding sheet according to claim 1 ,
wherein the vinyl chloride-vinyl acetate copolymer has a glass transition temperature of 65 to 85° C.

4. The decorative molding sheet according to claim 1 ,
wherein the amount of the resin layer is 50 to 100 g/m 2 .

5. The decorative molding sheet according to claim 1 ,
wherein the artificial leather substrate contains 10 to 40 mass % of the elastic polymer.

6. The decorative molding sheet according to claim 1 ,
wherein the elastic polymer is polyurethane.

7. The decorative molding sheet according to claim 1 ,
wherein the leather-like finished surface is a napped surface formed by napping the ultrafine fibers.

8. The decorative molding sheet according to claim 1 ,
wherein the leather-like finished surface is a resin layer stacked on a surface of the artificial leather substrate.

9. The decorative molding sheet according to claim 1 ,
wherein the ultrafine fibers include nylon ultrafine fibers.

10. A preform molded body, obtained by shaping the decorative molding sheet according to claim 1 into a three-dimensional shape.

11. A decorative molded body, comprising:
a resin molded body; and
a skin layer disposed on a surface of the resin molded body,
wherein the skin layer is the decorative molding sheet according to claim 1 .

12. The decorative molding sheet according to claim 2 ,
wherein the vinyl chloride-vinyl acetate copolymer has a glass transition temperature of 65 to 85° C.

13. The decorative molding sheet according to claim 12 ,
wherein the artificial leather substrate contains 10 to 40 mass % of the elastic polymer.

14. The decorative molding sheet according to claim 13 ,
wherein the ultrafine fibers include nylon ultrafine fibers.

15. The decorative molding sheet according to claim 14 ,
wherein the elastic polymer is polyurethane.

16. The decorative molding sheet according to claim 15 ,
wherein the leather-like finished surface is a napped surface formed by napping the ultrafine fibers.

17. The decorative molding sheet according to claim 15 ,
wherein the leather-like finished surface is a resin layer stacked on a surface of the artificial leather substrate.

Assignees

• Kuraray Co

Inventors

• Matsuda Daisuke
• Fujisawa Michinori
• Ito Toshiyuki

Classifications

• B32B2479/00

  Furniture · CPC title

• B29K2631/04

  Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate · CPC title

• D06N3/143

  with polyurethanes and other polycondensation or polyaddition products, e.g. aminoplast · CPC title

• B29K2055/02

  ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title