IP Library Granted Patent US 8,669,297
Granted Patent B2
US 8,669,297 · App. 13/113,345 · Granted Mar 11, 2014

Textile backing formed from recycled materials

Inventors: Paul D. Evans, Jr. (Sugar Valley, GA); Gabe Moore (Acworth, GA)
Assignee: Tandus Flooring, Inc.
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Quick Facts
Patent No.
US 8,669,297
App. No.
13/113,345
Granted
Mar 11, 2014
Kind
B2
Abstract

Backings for carpet and carpet tiles are formed from various post-consumer and/or post-industrial polymeric waste materials, for example, post-consumer textile waste material (e.g., carpet and carpet tiles), post-industrial textile waste material (e.g., carpet and/or carpet tiles), and/or other post-consumer and/or post-industrial polymeric materials.

Claims (38)

1. A method of making a textile backing from post-consumer textile backing waste and post-industrial polymeric waste, the method comprising:

forming the post-consumer textile backing waste, wherein forming the post-consumer textile backing waste comprises

shredding post-consumer textile waste, wherein the post-consumer textile waste comprises fibers joined to post-consumer backing, the post-consumer backing comprising compounded polyvinyl chloride, and wherein shredding the post-consumer textile waste at least partially separates the fibers from the post-consumer backing, and

removing at least about 80% of the fibers from the shredded post-consumer textile waste to form the post-consumer textile backing waste, so that the post-consumer textile backing waste comprises at least about 80% compounded polyvinyl chloride, wherein the post-consumer textile backing waste is in a shredded condition;

processing the post-industrial polymeric waste, the post-industrial polymeric waste comprising up to 100 wt % compounded polyvinyl chloride;

delivering the post-consumer textile backing waste in the shredded condition to an extruder, wherein the post-consumer textile backing waste is delivered to the extruder in the shredded condition without being granulated or densified;

extruding a mixture comprising from about 1 to about 3% blowing agent and from about 97 to about 99% combined polymeric waste, wherein the combined polymeric waste comprises from about 40 to about 100 wt % of the post-consumer textile backing waste and from 0 to about 60 wt % of the processed post-industrial polymeric waste; and

heating the extruded mixture to a temperature above an activation temperature of the blowing agent to form the textile backing.

2. The method of claim 1 , wherein removing at least about 80% of the fibers from the shredded post-consumer textile waste to form the post-consumer textile backing waste comprises removing at least about 85% of the fibers, so that the post-consumer textile backing waste comprises at least about 85% compounded polyvinyl chloride.

3. The method of claim 1 , wherein removing at least about 80% of the fibers from the shredded post-consumer textile waste to form the post-consumer textile backing waste comprises removing at least about 90% of the fibers, so that the post-consumer textile backing waste comprises at least about 90% compounded polyvinyl chloride.

4. The method of claim 1 , wherein removing at least about 80% of the fibers from the shredded post-consumer textile waste to form the post-consumer textile backing waste comprises removing at least about 95% of the fibers, so that the post-consumer textile backing waste comprises at least about 95% compounded polyvinyl chloride.

5. The method of claim 1 , further comprising calendaring the extruded mixture.

6. The method of claim 1 , wherein the mixture comprises from about 55 to about 98 wt % post-consumer textile backing waste, from 0 to about 45 wt % post-industrial polymeric waste, and about 2 wt % blowing agent.

7. The method of claim 1 , wherein the mixture comprises from about 59 to about 98 wt % post-consumer textile backing waste, from 0 to about 39 wt % post-industrial polymeric waste, and about 2 wt % blowing agent.

8. The method of claim 1 , wherein the mixture comprises less than about 39 wt % post-industrial polymeric waste.

9. The method of claim 1 , wherein the mixture comprises at least about 59 wt % post-consumer textile backing waste.

10. The method of claim 1 , wherein the mixture comprises about 59 wt % post-consumer textile backing waste, about 39 wt % post-industrial polymeric waste, and about 2 wt % blowing agent.

11. The method of claim 1 , wherein the post-consumer textile backing waste comprises at least about 85 wt % post-consumer backing.

12. The method of claim 1 , wherein the post-consumer textile backing waste comprises at least about 90 wt % post-consumer backing.

13. The method of claim 1 , wherein the post-consumer textile backing waste comprises greater than about 95 wt % post-consumer backing.

14. The method of claim 1 , wherein the post-consumer textile waste comprises at least one of carpet and carpet tiles.

15. The method of claim 1 , wherein the post-industrial polymeric waste comprises at least one of pool liner, meat wrap, and automotive scrap.

16. The method of claim 1 , wherein the processing of the post-industrial polymeric waste comprises at least one of shredding, chopping, grinding, compacting, granulating, and pelletizing the post-industrial polymeric waste.

17. The method of claim 1 , wherein the textile backing comprises a carpet backing.

18. A method of making a textile backing, the method comprising:

forming post-consumer textile backing waste, wherein forming the post-consumer textile backing waste comprises

shredding post-consumer textile waste, wherein the post-consumer textile waste comprises fibers joined to post-consumer backing, the post-consumer backing comprising compounded polyvinyl chloride, and wherein shredding the post-consumer textile waste at least partially separates the fibers from the post-consumer backing, and

removing at least about 90% of the fibers from the shredded post-consumer textile waste to form the post-consumer textile backing waste, so that the post-consumer textile backing waste comprises at least about 90% compounded polyvinyl chloride, wherein the post-consumer textile backing waste is in a shredded condition;

separately densifying post-industrial polymeric waste, the post-industrial polymeric waste comprising up to 100 wt % compounded polyvinyl chloride, wherein densifying the post-industrial polymeric waste comprises at least one of compacting and pelletizing the post-industrial polymeric waste;

delivering the post-consumer textile backing waste in the shredded condition, the densified post-industrial polymeric waste, and a blowing agent to an extruder to form a textile backing composition, wherein the post-consumer textile backing waste is delivered to the extruder in the shredded condition without being granulated or densified;

extruding the textile backing composition; and

activating the blowing agent to form the textile backing.

19. A method of making a textile backing, the method comprising:

shredding post-consumer textile waste, wherein the post-consumer textile waste comprises fibers joined to post-consumer backing, the post-consumer backing comprising compounded polyvinyl chloride, and wherein shredding the post-consumer textile waste at least partially separates the fibers from the post-consumer backing, and

removing at least about 85% of the fibers from the shredded post-consumer textile waste to form post-consumer textile backing waste, so that the post-consumer textile backing waste comprises at least about 85% compounded polyvinyl chloride;

delivering the shredded post-consumer textile backing waste to an extruder, wherein the post-consumer textile backing waste is delivered to the extruder in the shredded condition without being granulated or densified;

extruding a mixture comprising from about 1 to about 3% blowing agent and at least about 85% compounded polyvinyl chloride from the shredded post-consumer textile backing waste; and

activating the blowing agent to form the textile backing.

Assignments (3)
MERGER Recorded Feb 26, 2019
From: TANDUS CENTIVA INC.
To: TARKETT USA INC.
Reel/Frame 048442/0869 →
CHANGE OF NAME Recorded Feb 26, 2019
From: TANDUS FLOORING, INC.
To: TANDUS CENTIVA INC.
Reel/Frame 048442/0481 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 5, 2011
From: EVANS, PAUL D., JR.; MOORE, GABE
To: TANDUS FLOORING, INC.
Reel/Frame 026541/0962 →
Continuity (4)
Provisional Application 61347599 · May 24, 2010
Provisional Application 61347602 · May 24, 2010
Provisional Application 61413528 · Nov 15, 2010
Related Publication 20110288189A1 · Nov 24, 2011