Patent ID: 9441073
Filing Date: 2016-09-13
CPC Classification: B60C,C08G,D01D,D01F,D02G,D10B

Claim Text:
1. A drawn PET fiber, including 90 mol % or more of PET, and showing the elongation of 5.0 to 7.0% when giving the load of 2.0 kg/1000 d, and the elongation of 11.0 to 14.0% when giving the load of 4.5 kg/1000 d, after heat-treating the same at 180° C. for 2 minute under the initial load of 20 g/1000 d, wherein the drawn PET fiber is obtained by drawing an undrawn PET fiber at a draw ratio of 0.1 to 1.55, and wherein the undrawn PET fiber has an amorphous orientation factor (AOF) of 0.15 or less.