UNSTRETCHED FLUORORESIN FIBER, STRETCHED FLUORORESIN FIBER, MANUFACTURING METHOD OF UNSTRETCHED FLUORORESIN FIBER, AND MANUFACTURING METHOD OF STRETCHED FLUORORESIN FIBER

摘要

PROBLEM TO BE SOLVED: To provide a method of easily mass-producing stretched fluororesin fiber having a fiber diameter of 10 μm or less or a method of producing a multifilament product, unstretched fluororesin fiber for use in the same, stretched fluororesin fiber having large elongation, and unstretched fluororesin fiber for use in the same.;SOLUTION: The unstretched fluororesin fiber having a fiber diameter of 19 μm or less is made from (A) tetrafluoroethylene/fluoroalkoxytrifluoroethylene copolymer by melt spinning. (A) The tetrafluoroethylene/fluoroalkoxytrifluoroethylene copolymer has a melt flow rate of 60 g/10 min or more.;COPYRIGHT: (C)2014,JPO&INPIT