Polyoxymethylene fiber and method for production thereof
AssigneePolyplastics Co., Ltd.
InventorsTakeshi Kikutani, Hidetoshi Okawa
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Abstract
Polyoxymethylene fiber having a high strength and a high modulus of elasticity is provided. Polyoxymethylene fiber comprising polyoxymethylene copolymer having a half-crystallization time of at least 30 sec, when the polyoxymethylene copolymer is cooled from a melted state at 200° C. to 150° C. at a cooling speed of 80° C./min and maintained constantly at the temperature of 150° C.
Claims23
Polyoxymethylene fiber comprising a polyoxymethylene copolymer that has a half-crystallization time of at least 30 sec when the polyoxymethylene copolymer is cooled from a molten state at 200° C. to 150° C. at a cooling rate of 80 ° C./min and maintained constantly at the temperature of 150° C.
A process for producing polyoxymethylene fiber, comprising taking off fibrous matter spun from a spinning nozzle of a melt spinning apparatus while heating at an ambient temperature of from 140 to 250° C., when the polyoxymethylene copolymer is subjected to melt spinning to produce the polyoxymethylene fiber.
Dependencies are inferred from the claim text.