Patent ID: 6503622
Filing Date: 2003-01-07
Classification: D01D,D01F,D02G,Y10T

Abstract:
A texturized, combined polyester multifilament yarn, comprising two types of texturized polyester multifilaments FYA and FYB different in polymer chemical composition thereof from each other and combined and portially intermingled with each other to form a combined multifilament yarn FY, wherein average filament length under a straightened condition of the individual multifilaments FYB is 8 to 40% longer than that of the individual multifilaments FYA in the combined multifilament yarn FY, the shorter individual multifilaments FYA have a coefficient of variation (CVA) in filament length, under a straightened condition, of 3% or less, and a coefficient of variation (CVBâˆ’A) in difference between the individual filament lengths of the longer individual multifilaments FYB and the average filament length of the shorter individual multifilaments FYA, each under a straightened condition, is in the range of from 10 to 20%.