Floor material using PLA resin

Patent metadata

Field	Value
Publication number	US-9517612-B2
Application number	US-201113634485-A
Country	US
Kind code	B2
Filing date	Mar 15, 2011
Priority date	Mar 15, 2010
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

Disclosed is a flooring material using an environment-friendly PLA resin. According to the present invention, the flooring material using the PLA resin comprises: a base layer; a print layer which is formed on top of the base layer, and has a print pattern on an upper side thereof; and a transparent layer which is formed on top of the print layer, wherein one or more of the base layer, the print layer, and the transparent layer include polylactic acid (PLA) resin.

First claim

The invention claimed is:

1. A flooring material using a polylactic acid (PLA) resin, comprising:
a base layer;
a print layer formed on top of the base layer and having a printed pattern on an upper surface of the print layer;
a transparent layer formed on the top of the print layer; and
an anti-hydrolysis agent,
wherein the base layer, the print layer and the transparent layer include a 100% amorphous PLA resin comprising acetyl tributyl citrate as a non-phthalate plasticizer, styrene-methacrylate-glycidyl acrylate polymer as a chain extender and an acrylic copolymer as a melt strength enhancer,
wherein the base layer comprises 5 to 100 parts by weight of acetyl tributyl citrate, 0.01 to 10 parts by weight of styrene-methacrylate-glycidyl acrylate polymer and 0.1 to 20 parts by weight of the acrylic copolymer based on 100 parts by weight of the PLA resin, the base layer further comprising at least 10 parts by weight but less than 200 parts by weight of wood flour and/or at least 5 parts by weight but less than 20 parts by weight of pine resin based on 100 parts by weight of the PLA resin,
wherein the print layer comprises 5 to 60 parts by weight of acetyl tributyl citrate, 0.01 to 10 parts by weight of styrene-methacrylate-glycidyl acrylate polymer and 0.1 to 20 parts by weight of the acrylic copolymer based on 100 parts by weight of the PLA resin, and
wherein the transparent layer comprises 5 to 50 parts by weight of acetyl tributyl citrate, 0.01 to 10 parts by weight of styrene-methacrylate-glycidyl acrylate polymer, 10 parts by weight or less of the anti-hydrolysis agent and 0.1 to 20 parts by weight of the acrylic copolymer based on 100 parts by weight of the PLA resin.

2. The flooring material of claim 1 , further comprising: a surface treatment layer formed on top of the transparent layer.

3. The flooring material of claim 1 , wherein the transparent layer has a thickness of 0.10 to 1.0 mm.

4. The flooring material of claim 1 , wherein the print layer has a thickness of 0.01 to 0.3 mm.

5. The flooring material of claim 1 , wherein the base layer has a thickness of 1.00 to 5.0 mm.

6. The flooring material of claim 1 , wherein the anti-hydrolysis agent is selected from the group including: polycarbodiimide, carbodiimide, and oxazoline.

7. The flooring material of claim 1 , comprising:
a release layer formed on a lower surface of the base layer,
wherein the release layer includes the PLA resin.

8. The flooring material of claim 7 , wherein the release layer has a thickness of 0.10 to 2.0 mm.

9. The flooring material of claim 7 , wherein the release layer comprises 5 to 60 parts by weight of the non-phthalate plasticizer and 0.1˜20 parts by weight of the acrylic copolymer based on 100 parts by weight of the PLA resin.

10. The flooring material of claim 9 , wherein the release layer further comprises at least one of 0.01 to 10 parts by weight of the lubricant, 0.01 to 10 parts by weight of the chain extender, 10 parts by weight or less of the anti-hydrolysis agent, 500 parts by weight or less of calcium carbide, 200 parts by weight or less of wood flour, and 20 parts by weight or less of pine resin based on 100 parts by weight of the PLA resin.

11. The flooring material of claim 1 , wherein the PLA resin further comprises at least one of a lubricant.

12. The flooring material of claim 11 , wherein the PLA resin further comprises at least one of calcium carbide and titanium dioxide.

13. The flooring material of claim 11 , wherein the transparent layer further comprises at least one of 0.01 to 10 parts by weight of the lubricant and 10 parts by weight or less of the anti-hydrolysis agent based on 100 parts by weight of the PLA resin.

14. The flooring material of claim 11 , wherein the print layer further comprises at least one of 0.01 to 10 parts by weight of the lubricant, 10 parts by weight or less of the anti-hydrolysis agent, 100 parts by weight or less of calcium carbide (CaCO 3 ), and 50 parts by weight or less of titanium dioxide (TiO 2 ) based on 100 parts by weight of the PLA resin.

15. The flooring material of claim 11 , wherein the base layer further comprises 0.01 to 10 parts by weight of a higher fatty acid as the lubricant, 10 parts by weight or less of the anti-hydrolysis agent, and calcium carbide 1,000 parts by weight or less based on 100 parts by weight of the PLA resin.

Assignees

• Huang Cheng-Zhe
• Kim Ji-Young
• Park Ki-Bong
• Kang Chang-Won
• Kwon Jun-Hyuk
• Kwon Hyun-Jong
• Park Sang-Sun
• Kim Jang-Ki
• Lee Gyeong-Min
• Lg Hausys Ltd

Inventors

• Huang Cheng-Zhe
• Kim Ji-Young
• Park Ki-Bong
• Kang Chang-Won
• Kwon Jun-Hyuk
• Kwon Hyun-Jong
• Park Sang-Sun
• Kim Jang-Ki
• Lee Gyeong-Min

Classifications

• E04F15/107 Primary

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

• Y10T428/24868

  Translucent outer layer · CPC title

• E04C2/24

  laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 · CPC title

• E04C2/50

  Self-supporting slabs specially adapted for making floors ceilings, or roofs, e.g. able to be loaded (E04C2/52, E04C2/54 take precedence; structures of slab-shaped elements E04B1/02; floor structures E04B5/00; roofs consisting of self-supporting slabs E04B7/20; ceilings E04B9/00; roof coverings E04D; floor coverings E04F15/00) · CPC title

• E04C2/32

  formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material · CPC title