Carpet, carpet backing and method for making same using olefin block copolymers

US8617686B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Randy E. Pepper · Lake Jackson, US
• David J. Magley · Midland, US
• Ronald Wevers · Terneuzen, NL
• Harold C. Fowler · Midland, US
• Selim Yalvac · Midland, US
• Colin LiPiShan · Pearland, US
• Ronald J. Weeks · Lake Jackson, US
• Yi Jin · Irvine, US

Key dates

• Filing date: Dec 19, 2008
• Grant date: Dec 31, 2013
• Expiry date: May 8, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/23993
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A carpet includes (a) a primary backing which has a face and a back surface, (b) a plurality of fibers attached to the primary backing and extending from the face of the primary backing and exposed at the back surface of the primary backing, (c) an adhesive backing, (d) an optional secondary backing adjacent to the adhesive backing, and (e) at least one olefin block copolymer, especially ethylene based block copolymers An olefin block copolymer is extrusion coated onto the back surface of a primary backing to provide an adhesive backing Additional steps and procedures can include washing or scouring the primary backing and fibers prior to the extrusion step, and utilizing implosion agents The preferred olefin block copolymer is an ethylene based block interpolymers The constructions and methods are suited for making tufted, broad-loom carpet having improved abrasion resistance.