PREPARATION METHOD OF COMPOSITE POLYESTER YARN

摘要

PURPOSE: A method for producing composite polyester yarn is proposed to achieve high efficiency of dyeing and bathochromic effect in case of where it is black colored by using low degree of orientation and high crystalline polyester. CONSTITUTION: A preparation method of composite polyester yarn is performed by air whirling or spunlacing a polyester yarn having low orientation degree and high crystalline as core yarn and a known partial drawn yarn as sheath yarn, and false twisting them. The polyester yarn has high dyeing efficiency to reduce the difference of dyeing property between the core and sheath yarns. Further, the polyester yarn is useful for improvement of bathochromic effect because of the bathochromic enhancing factor and the complex spunlace construction of the core and sheath yarns to generate synergic effect.