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US 7,351,465 B2Granted
Polymeric based carpet
AssigneeWestlake Longview Corporation
InventorsGary D Jerdee, Brad D Rodgers, Eugene D Medlock, Roger Kolm
Life of this patent
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Abstract
Polymeric carpet and a method of making and recycling such carpet, the carpet having fibers, backing and extruded adhesive all of completely recyclable materials, the recycling being accomplished in one melting step, without a separation step.
Claims6
A carpet composition, recyclable without a separation step, having from 50 to 100 percent polymeric material comprising:
- a) a tufted primary backing having a primary backing and tufts of carpet fibers penetrating a bottom surface of the primary backing and protruding from a top surface of the primary backing;
- b) a secondary backing material;
- and
- c) an adhesive material binding an upper surface of the secondary backing material to the bottom surface of the primary backing;
- wherein the adhesive material consists essentially of a blend of an ethylene methyl acrylate copolymer and at least one polymer selected from the group consisting of low density polyethylenes, linear low density polyethylenes, high density polyethylenes, ultra low density polyethylene, styrenic copolymers of butadiene, styrenic copolymers of acrylonitrile, styrenic copolymers of ethylene, polyester, ethylene acrylic acid copolymers, ethylene methyl acrylic acid copolymers, butyl acrylate copolymers, ionomers, polyamides, and maleic anhydrides.
2 more elements
Dependencies are inferred from the claim text.