Thermoplastic fiber with excellent durability and fabric comprising the same

Abstract

Disclosed are a thermoplastic fiber with excellent durability and a fabric comprising the same. More particularly, the thermoplastic fiber contains fluoropolymer particles with average particle diameter ranging from 0.01 to 5.0/ΛII in thermoplastic resin to form the fiber. The inventive thermoplastic fiber is prepared by adding the fluoropolymer particles to the thermoplastic resin while spinning the thermoplastic resin. The inventive thermoplastic fiber exhibits superior durability, that is, resistance to friction and/or modification and is preferably adopted as yarns for footwear, furniture, (mountain-climbing) backpacks, abrasives, sportswear and so on.

1 . A thermoplastic fiber with excellent durability comprising thermoplastic resin, in which fluoropolymer particles having average particle diameter in the range from 0.01 to 5.0 μm are contained in the thermoplastic resin. 
   
   
       2 . The thermoplastic fiber according to  claim 1 , wherein the fiber has monofilament fineness of not more than 20 denier. 
   
   
       3 . The thermoplastic fiber according to  claim 1 , wherein content of the fluoropolymer ranges from 0.1 to 9.0% by weight. 
   
   
       4 . The thermoplastic fiber according to  claim 1 , wherein the fluoropolymer particles have average particle diameter ranging from 0.1 to 1.0 μm. 
   
   
       5 . The thermoplastic fiber according to  claim 1 , wherein the fluoropolymer comprises at least one selected from a group consisting of polytetrafluoroethylene polymer, copolymer of tetrafluoroethylene and hexafluoropropene, copolymer of tetrafluoroethylene and perfluoroalkylvinylether, and terpolymer thereof. 
   
   
       6 . The thermoplastic fiber according to  claim 1 , wherein the thermoplastic fiber is a sea-island type composite fiber that contains island components with monofilament fineness ranging from 0.001 to 0.3 denier dispersed in sea components formed of alkali releasing and eluting polymer. 
   
   
       7 . The thermoplastic fiber according to  claim 6 , wherein the island components contain fluoropolymer particles with average particle diameter ranging from 0.01 to 5.0 μm. 
   
   
       8 . The thermoplastic fiber according to  claim 1 , wherein the thermoplastic fiber is a thermoplastic hollow fiber having hollow portions in cross-sectional area thereof. 
   
   
       9 . The thermoplastic fiber according to  claim 1 , wherein the thermoplastic hollow fiber has a hollow rate ranging from 10 to 40%. 
   
   
       10 . A fabric comprising the thermoplastic fiber defined in  claim 1 .