Methods of recycling synthetic turf, methods of using reclaimed synthetic turf, and products comprising same

Patent metadata

Field	Value
Publication number	US-9855682-B2
Application number	US-201213493675-A
Country	US
Kind code	B2
Filing date	Jun 11, 2012
Priority date	Jun 10, 2011
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

Disclosed are methods for utilizing reclaimed synthetic turf materials in the manufacture of various second generation floor coverings and floor covering components. Also disclosed are products manufactured by the methods.

First claim

What is claimed is:

1. A method of using reclaimed synthetic turf material to manufacture a second generation product, comprising:
shearing face fibers from synthetic turf at a point of installation to provide sheared face fibers and remaining carcass;
removing the remaining carcass from the point of installation;
feeding the sheared face fibers into an extrusion device to form an extrudate; and
incorporating the extrudate into a carpet product, thereby forming a second generation carpet product.

2. The method of claim 1 , further comprising downsizing the face fibers prior to the step of forming the extrudate.

3. The method of claim 1 , further comprising removing fines from the face fibers prior to the step of forming the extrudate.

4. The method of claim 1 , wherein the extrudate is formed at an extrusion temperature between about 200° F. and about 650° F.

5. The method of claim 1 , wherein the extrudate is formed at an extrusion rate ranging from about 3 lbs/hour to about 5,000 lbs/hour.

6. The method of claim 1 , wherein the extrudate is formed using a die having a desired diameter, and wherein the desired diameter of the die is between about 102 mm and about 305 mm.

7. The method of claim 1 , wherein the extrudate is in a form selected from the group consisting of a strand, a ribbon, a pellet, a continuous fiber, an extrusion coating, and a sheet.

8. The method of claim 1 , further comprising blending one or more additives with the face fibers prior to forming the extrudate.

9. The method of claim 8 , wherein each additive of the one or more additives is selected from the group consisting of a colorant, a foaming agent, an elastomer, a viscosity modifier, a compatibilizer, a chain extender, a surfactant, a blowing agent, a cross linker, an antimicrobial agent, a flame retardant, a light stabilizer, and a filler.

10. The method of claim 8 , wherein the one or more additives comprises a filler selected from the group consisting of calcium carbonate, aluminum oxide trihydrate (alumina), calcined clay, wollastonite, coal fly ash, iron oxide, and barium sulfate.

11. The method of claim 2 , further comprising agglomerating the downsized face fibers prior to the step of forming the extrudate.

12. The method of claim 1 , wherein the step of incorporating comprises directly applying the extrudate onto the carpet product.

13. The method of claim 1 , further comprising blending one or more additives with the face fibers during the step of forming the extrudate.

14. The method of claim 1 , wherein at least a portion of infill is removed prior to shearing of face fibers.

15. The method of claim 1 , wherein the remaining carcass is recycled.

Assignees

• Fowler Gregory
• Rees John J M
• Moore David A
• Columbia Insurance Co

Inventors

• Fowler Gregory
• Rees John J M
• Moore David A

Classifications

• B32B5/245

  another layer next to it being a foam layer · CPC title

• B32B2264/104

  Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles · CPC title

• B32B2262/0276

  Polyester fibres · CPC title

• B29B17/0042 Primary

  for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic · CPC title

• Y10T442/60

  Nonwoven fabric [i.e., nonwoven strand or fiber material] · CPC title