Vinylidene fluoride resin fiber and process for producing...

Details Vinylidene fluoride resin fiber and process for producing... Vinylidene fluoride resin fiber and process for producing...

D - Textiles, Paper

01

F

18/627

D01F 6/12 (2006.01) G10D 3/10 (2006.01)

Patent

CA 1241811

ABSTRACT OF THE DISCLOSURE A vinylidene fluoride resin fiber having an in- creased tensile strength is obtained by spinning by melt-extrusion of a vinylidene fluoride resin having a large polymerization degree under the conditions of a small extrusion rate and a large draft ratio into a small diameter of spun fiber. The thus obtained fiber is characterized by having no crystal melting point based on the vinylidene fluoride chains at a tempera- ture below 178 °C, and having a mean crystal length in the molecular chain direction of 200 A or longer and a birefringence of 30 x 10-3 or larger.

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