Manufacturing method for elastic fiber having fur-like touch, elastic fiber having fur-like touch made from the same, and fabric woven by said fiber

Abstract

A manufacturing method for elastic fiber having fur-like touch, elastic fiber having fur-like touch made from the same, and fabrics woven by said fiber is provided to improve the defects caused by the conventional wool fiber or lack in the elasticity, wearing comfortability and maintenance of fabric having fur-like touch. Two kinds of thermoplastic polymer in different hear shrinkage rate by using same spinnerette arranged in side by side in the way of melt conjugate spinning to form conjugate fiber having spiral structure like spring. Elastic thermoplastic polymer is adopted to central core yarn, general thermoplastic fiber or modified thermoplastic polymer of crystalline retarded by third component is used to peripheral effect yarn, and by means of draw-twister, draw-winder or other filament combination equipment with heat setting and air entanglement, spin texturing to get a combined n filament heat draw yarn, then said combined filament yarn is subjected to twisting, heat setting, warping or battening to weave or knit to fabric, then via fabric finishing and processing. High temperature treatment makes core yarn of combined filament yarn elastic due to heat shrinkage difference and makes effect yarn of combined filament yarn low Young's modulus. This leads to elastic fiber having fur-like touch and fabrics woven by said fiber.

What is claimed is:  
     
         1 . A manufacturing method for elastic fiber having fur-like touch, which is characterized in: 
 spinning two kinds of thermoplastic polymer in different heat shrinkage characteristics by using same spinnerette arranged in side by side in the way of melt conjugate spinning to form conjugate fiber having spiral structure like spring;    heat drawing and setting said conjugate fiber through draw twister for 0.01˜0.3 second, the drawing temperature being set as the glass temperature(Tg) of said thermoplastic polymer ±50° C., setting temperature being set as the crystalline temperature (Tc) of said thermoplastic polymer +100° C., to get a core-sheath(effect) yarn having core shaped in the center and sheath covered in the outer layer; said core yarn having elasticity is formed by using thermoplastic polymer selected from the group of polyethylene terephthalate(PET), polybutylene terephthalate(PBT), polytrimethylene terephthalate(PTT) and their modified polymer, and said sheath(effect) yarn is formed by using thermoplastic polymer selected from the group of polyethylene terephthalate(PET) and said modified thermoplastic polymer of crystalline retarded by third component;    spin texturing said core-sheath(effect) yarn to form fiber having heat drawing characteristic and combining to tangle with each other by air nozzle to get elastic fiber having fur-like touch.    
     
     
         2 . The manufacturing method of  claim 1 , said modified thermoplastic polymer of crystalline retarded by third component is one or more than one selected from the group of orthophthalic acid, adipic acid, sebacic acid, isophthalic acid and terephthalic acid.  
     
     
         3 . An elastic fiber having fur-like touch, which is characterized in being made from the manufacturing method according to  claim 1 , wherein the elongation rate of the outer effect(sheath) yarn is 50%˜150% higher than that of the center core yarn, said fiber is formed into core-sheath structure by draw twisting and used for warp or weft.  
     
     
         4 . An elastic fabric having fur-like touch, which is characterized in being woven or knitted from the fiber made from the manufacturing method according to claim 1˜3 to get a fabric having an elastic elongation over 10%.