Textile fabric and yarn composed of synthetic fibers, preparation thereof and use thereof

US7267843B2 · kind B2 · utility

Inventors

• Bernhard Jahn · Obermeitingen, DE
• Gerhard Leumer · Bobingen, DE
• August Schneider · Bocholt, DE

Key dates

• Filing date: Aug 22, 2003
• Grant date: Sep 11, 2007
• Expiry date: Sep 9, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/232
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Textile fabric composed of synthetic fibers is subjected to a gas phase fluorination in a fluorine/inert gas atmosphere having a fluorine concentration in the range from 0.1 to 10% in order that the synthetic fiber surfaces may be activated in such a way that they are able to react with organic or inorganic compounds. Thereafter, the fabric is coated with a fluorocopolymer which is free of adhesion promoters. Similarly, yarn composed of synthetic fibers is first gas phase fluorinated and thereafter coated with a fluorocopolymer. Sewing yarn or thread, having been gas phase fluorinated, is bonded by means of a fluoropolymer coating. The improved adhesion makes the coated materials useful for a wide range of industrial applications.