Abstract Carpets, particularly tufted carpets having a primary backing of hessian or jute, having a secondary backing which comprises an extruded foamed aliphatic thermoplastic resin having a glass transition temperature below ordinary room temperature. Preferably, the resin is an olefin polymer or copolymer, e.g., polyethylene, and the foamed resin has a predominantly closed cell structure, the majority of the cells having a diameter of 0.002-0.1 inch. The foamed resin can be up to 0.5-inch thick; can be in the form of a continuous sheet, a woven fabric or net, or a plurality of adjacent sheets; and, if desired, can be perforated, corrugated, or embossed. It can be fastened to the back of the carpet in any convenient manner, e.g., by sewing it in place or by adhering it by means of a suitable adhesive such as a pressure-sensitive adhesive, a latex adhesive, or a heatsensitive adhesive.
The improved carpet of claim 1 wherein the carpet is a tufted carpet comprising individual tufts of pile yarn pulled through a primary backing fabric.
Claim 2
Dependent Claim
15 words
The improved carpet of claim 1 wherein the extruded foamed aliphatic thermoplastic resin is polyethylene.
Claim 3
Dependent Claim
26 words
The improved carpet of claim 1 wherein adhesion of the secondary backing sheet to the primary carpet backing is accomplished by means of a pressure-sensitive adhesive.
Claim 4
Dependent Claim
28 words
The improved carpet of claim 1 wherein adhesion of the secondary backing sheet to the primary carpet backing is accomplished by means of a heat-sensitive polyvinyl acetate adhesive.