Process of recycling waste polymeric material and an article utilizing the same
AssigneeCollins & Aikman Floorcoverings, Inc.
InventorsStephen A. Zegler, Paul L. Weinle
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Abstract
The present invention provides a process for recycling waste polymeric material comprising a mixture of waste polymeric material wherein the waste polymeric material includes from about 15 to 50 percent aliphatic polyamide material; granulating the chopped mixture into fragments at least about 100 times smaller than the size of the waste polymeric material; and extruding the ground mixture at a temperature of less than about the T.sub.g of the lowest melting waste aliphatic polyamide polymeric material.
Claims3
A floor covering comprising a carpet having textile fibers defining a fibrous upper outer face and a primary backing to which the textile fibers are secured and a secondary backing permanently adhered to a lower surface of the primary backing, the secondary backing comprising a matrix formed by an extruded granulated coarsely chopped mixture of waste polymer material including 15 to 50 percent aliphatic polyamide material having a predetermined decomposition temperature and the remainder of the waste polymer material includes at least one polymeric material selected from a group consisting of polyethylene, polypropylene, vinyl esters, vinyl chloride and blends and copolymers thereof, the chopped material being extruded at a temperature less said predetermined decomposition temperature associated with the majority of the aliphatic polyamide material present in said chopped mixture of waste polymer material.
Dependencies are inferred from the claim text.