US 6,503,595 B1 · Carpet having syndiotactic polypropylene backing and technique for making same

Abstract

The disclosure relates to a carpet, a process for manufacturing a carpet and a method for recycling a carpet. The carpet of the present disclosure includes a primary backing having tufts of synthetic carpet fibers protruding from a top surface and, optionally, a secondary backing, with an extruded sheet of a polyolefin polymer composition between and integrally fused to a bottom surface of the primary backing and an upper surface of the secondary backing. The extruded sheet polymer composition comprises at least 10%, preferably, at least 20% by weight of a syndiotactic polypropylene product. The extruded sheet polymer composition may further comprise less than 40% by weight of an impact modifier. The process for manufacturing the recyclable carpet includes contacting the extruded sheet with the primary backing and, optionally, the secondary backing, at a temperature sufficiently high to integrally fuse the extruded sheet to the respective backing. The extruded sheet provides excelled adhesion and abrasion properties.

Claims15

Dependent claims

A carpet comprising

(a) a primary backing,
(b) tufts of carpet fibers protruding from a top surface of the primary backing, and
(c) an extruded sheet of a homogenous thermoplastic polyolefin polymer composition integrally fused to a bottom surface of the primary backing,
wherein the homogenous thermoplastic polyolefin polymer composition comprises at least 10% by weight of a cracked syndiotactic polypropylene and wherein the homogenous thermoplastic polyolefin polymer composition has a melt flow rate of 160 or higher.

1 more element

Dependencies are inferred from the claim text.

Carpet having syndiotactic polypropylene backing and technique for making same

Life of this patent

Carpet having syndiotactic polypropylene backing and technique for making same

Life of this patent

Abstract

Claims15