Patent ID: 9499928
Filing Date: 2016-11-22
CPC Classification: B60R,D01D,D01F,D02J,D03D,D04H,Y10T

Claim Text:
1. A polyester fiber having an elongation of 0.8 to 2.0% under a tensile strength of 1.0 g/d at the room temperature, and an additional elongation of 1.5 to 5% under a tensile strength of 8.8 g/d to the maximum, wherein the polyester fiber has a breaking elongation of 14%-23%, a dry shrinkage of 1.2%-6.5%, a total fineness of 460 to 650 denier, and a filament fineness of 3.23 to 6.8 denier per filament, and comprises 96-160 filaments; wherein the polyester fiber has a Young's modulus of 60 to 100 g/de at 1% elongation and 20 to 60 g/de at 2% elongation, wherein the Young's modulus is measured according to the ASTM D 885 method.