Process for making microporous fibers

Details Process for making microporous fibers Process for making microporous fibers

D - Textiles, Paper

01

D

D01D 5/247 (2006.01) D01D 5/16 (2006.01) D01F 1/10 (2006.01) D02J 1/22 (2006.01)

Patent

CA 2250071

A distinctive technique for making porous fiber includes a stretching of a substantially continuous fiber while the fiber is in an operative association with an effective quantity of surface-active material. The fiber can be produced from a source material which includes a thermoplastic, orientable material and at least about 0.35 weight percent (wt.%) of a supplemental material. In particular configurations of the invention, the fiber may be contacted with a first quantity of surface-active fluid and at least a separate, second quantity of surface-active fluid. In other configurations, the fiber may be subjected to an additional incremental stretching.

L'invention concerne un procédé particulier de fabrication de fibres poreuses consistant notamment à étirer une fibre sensiblement continue alors que celle-ci est associée de manière fonctionnelle à une quantité efficace de matière tensio-active. La fibre peut être produite à partir d'une matière brute contenant un matériau thermoplastique orientable et au moins environ 0,35 % en poids d'un matériau supplémentaire. Dans certaines configurations de ladite invention, la fibre peut être mise en contact avec une première quantité de fluide tensio-actif et au moins une deuxième quantité distincte du même fluide tensio-actif. Dans d'autres configurations, la fibre peut être soumise à un étirement supplémentaire accru.

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