Wallpaper

Patent metadata

Field	Value
Publication number	US-10822746-B2
Application number	US-201716090848-A
Country	US
Kind code	B2
Filing date	Apr 26, 2017
Priority date	Apr 26, 2016
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Disclosed herein is a wallpaper, including: (a) a paper substrate including a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use; (b) a fluorine-containing coating attached to a surface of the ink decorative layer; and (c) a supporting layer attached to a lower surface of the paper substrate, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles are selected from the group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite and talc powder, and a combination of two or more thereof.

First claim

What is claimed is:

1. A wallpaper, comprising:
(a) a paper substrate, comprising a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use;
(b) a fluorine-containing coating attached to a surface of the ink decorative layer; and
(c) a supporting layer attached to a lower surface of the paper layer, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles have a particle diameter of 2 to 6 μm and are selected from a group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite, talc powder, and a combination of two or more thereof.

2. The wallpaper of claim 1 , wherein, the fluorine-containing coating comprises a fluorine-containing polymer selected from the group consisting of polyvinyl fluoride, polyvinylidene fluoride, a fluoroolefin-vinyl ether copolymer, a fluoroolefin-vinyl ester copolymer, and a combination of two or more thereof.

3. The wallpaper of claim 1 , wherein, the fluorine-containing coating comprises 80 to 99 wt % of a fluorine-containing polymer and 1 to 20 wt % of a delustering agent based on the total weight of the fluorine-containing coating; and the fluorine-containing coating has a thickness of 3 to 30 μm.

4. The wallpaper of claim 3 , wherein the delustering agent is selected from a group consisting of silicon dioxide, titanium dioxide, kaolin clay, diatomite, and a combination of two or more thereof.

5. The wallpaper of claim 1 , wherein, the supporting layer has a thickness of 5 to 50 μm.

6. The wallpaper of claim 1 , wherein the paper layer has a thickness of 145 to 240 μm, and a basic weight of 90 to 180 g/m 2 .

7. The wallpaper of claim 1 , wherein the ink decorative layer has a thickness of 1 to 10 μm.

8. The wallpaper of claim 1 , further comprising an adhesive layer that is located on one side of the supporting layer facing away from the paper substrate and has a thickness of 10 to 50 μm.

9. The wallpaper of claim 8 , wherein the adhesive layer is produced from the adhesive selected from the group consisting of starch adhesive, sticky rice adhesive, acrylate pressure sensitive adhesive, epoxy adhesive and a combination of two or more thereof.

10. A method for producing the wallpaper of any one of claims 1 to 9 , comprising:
(i) providing the paper substrate comprising a paper layer and an ink decorative layer attached to an upper surface of the paper layer;
(ii) providing a fluorine-containing composition, coating the fluorine-containing composition onto a surface of the ink decorative layer of the paper substrate, and drying, to produce the fluorine-containing coating;
(iii) providing a supporting layer composition, coating the supporting layer composition onto a lower surface of the paper layer, and drying, to produce the supporting layer; and
(iv) optionally, providing a glue, coating the glue onto a surface of the supporting layer facing away from the paper substrate, and drying, to produce the adhesive layer, wherein the glue includes an adhesive dispersed in water.

11. A wallpaper, comprising:
(a) a paper substrate, comprising a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use;
(b) a fluorine-containing coating comprising a fluorine-containing polymer attached to a surface of the ink decorative layer, wherein the fluorine-containing polymer comprises polyvinyl fluoride, a fluoroolefin-vinyl ether copolymer, a fluoroolefin-vinyl ester copolymer or a combination of two or more thereof; and
(c) a supporting layer attached to a lower surface of the paper layer, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles are selected from a group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite, talc powder, and a combination of two or more thereof.

12. The wallpaper of claim 11 , wherein the fluorine-containing polymer further comprises polyvinylidene fluoride.

Assignees

• Du Pont
• Dupont Electronics Inc

Inventors

• Honggui Zhang
• May Donald Douglas

Classifications

• B05D2203/22

  Paper or cardboard · CPC title

• B05D2301/00

  Inorganic additives or organic salts thereof · CPC title

• D21H27/20 Primary

  Flexible structures being applied by the user, e.g. wallpaper (printed wallpapers B41M3/18; paperhanging B44C7/00; pregummed wallpaper C09J7/21) · CPC title

• B05D2506/10

  Fluorinated polymers · CPC title

• D21H19/84

  on both sides of the substrate · CPC title