Thermally bound non-woven material

US8124550B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Armin Greiner · Weinheim, DE
• Klaus Veeser · Weinheim, DE
• Holger Schilling · Heitersheim, DE
• Gunter Frey · Ellerstadt, DE
• Ralph Berkemann · Bad Kissingen, DE

Key dates

• Filing date: Mar 4, 2006
• Grant date: Feb 28, 2012
• Expiry date: Mar 4, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/641
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a thermally bound non-woven material containing a low-shrinkage dual-component core-sheath fiber consisting of a crystalline polyester core and a crystalline polyester sheath which has a melting point at least 10° C. lower than the core, the heat-shrinkage characteristic of said fiber being less than 10% at 170° C.