Composite fiber of commingled fiberglass and...

D - Textiles – Paper – 02 – G

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D02G 3/04 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) B01D 46/04 (2006.01) D02G 3/18 (2006.01) D02J 1/08 (2006.01)

Patent

CA 2155325

An improved composite fiber of fiberglass and poly- tetrafluoethylene (PTFE) is provided. The composite fiber comprises a coherent strand of commingled filaments of fiber- glass and PTFE which is far more resistant to flex, abrasion and chemical attack than previous fiberglass fibers. Preferably filaments of expanded PTFE tow yarn and filaments of PTFE are combined through a process of air-jet texturing. The fibers of the present invention have a wide range of possible uses including being formed into a fabric and employed as filter media.

Cette invention concerne une fibre composite améliorée formée de fibres de verre et de polytétrafluoroéthylène (PTFE). Cette fibre composite comprend un toron cohérent formé de filaments mélangés de fibres de verre et de PTFE qui résiste beaucoup mieux à la flexion, à l'abrasion et aux attaques chimiques que les fibres en fibres de verre classiques. Les fils d'étoupe en PTFE expansé et les filaments de PTFE sont préférablement mélangés au moyen d'un procédé de texturation par jet d'air. Les fibres de cette invention offrent un large éventail d'utilisations possibles, on peut par exemple les utiliser pour réaliser un tissu et pour servir de milieu filtrant.

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