Title:
PROCESS FOR PRODUCING CARPET
Document Type and Number:
WIPO Patent Application WO2004025018
Kind Code:
A8
Abstract:
A process for preparation of a tufted polyamide-type fiber carpet is provided. A primary backing tufted with yarn comprised of at least 85% by weight of fibers selected from the group nylon fibers, wool fibers, and blends thereof is provided. A molten polymer adhesive is provided on the back side of the tufted primary backing, the polymer adhesive consisting of at least 85% by weight of one or more ethylene copolymers each comprised of 50 to 95 weight % of ethylene, and 5-50 weight % of at least one comonomer selected from the group of esters and carboxylic acids. The tufted primary backing and the molten polymer adhesive layer are compressed under a moving belt that applies a pressure of at least 1 N/cm<2> for a period of at least 5 seconds during which time the polymer adhesive remains in a molten state. The molten polymer adhesive then cooled to a temperature below the melting point of said molten adhesive. A secondary backing may be placed over the molten polymer adhesive on the back of the primary backing.
Inventors:
REISDORF RAYMOND JOSEPH
ROLLAND LOIC PIERRE
ROLLAND LOIC PIERRE
Application Number:
PCT/US2003/029163
Publication Date:
May 13, 2004
Filing Date:
September 12, 2003
Export Citation:
Assignee:
DU PONT (US)
International Classes:
B32B27/12; D06N7/00; B32B37/08; B32B37/10; B32B37/15; B32B37/20; (IPC1-7): D06N7/00; B29C43/48; B29C65/42; B32B27/12; B32B31/00; D05C17/02
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