Face-up coating of carpet backs with polyurethane

US6328833A · kind A · utility

Assignee

• Bayer Antwerpen · BE

Inventors

• Ulrich Holeschovsky · Mount Lebanon, US
• Jeffrey L. Robbins · Phoenixville, US
• Harry Stefanou · Strafford, US
• Leah Langsdorf · Akron, US
• David Gibala · Downingtown, US
• Robert R. Pollock · Pottstown, US

Key dates

• Filing date: Feb 6, 2001
• Grant date: Dec 11, 2001
• Expiry date: Feb 6, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/23993
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

Tufted carpeting can be manufactured employing polyurethane adhesives and cured face up without dripping, when one or more drip-reducing process steps of adding a non-Newtonian thickener to the adhesive or forming a viscosified or cured film on the outer surface of the adhesive are practiced prior to entry of the greige good into the curing oven.