Abstract: Abstract: In this paper, we want to know the difference of the hand and mechanical property of the fabrics that contain PTT(Polytrimethylene terephthalate)/PET(Polyethlene terephthalate) bi-component fiber and PU. The KES-F system is used to test the mechanical parameters of 4 control groups and then calculate the hand by Equation KN 301-S. It is found that this two kind fabrics have similar hand and mechanical property. However, the fabrics containing PTT/PET bi-component composite fiber have lower bending rigidity, higher bending and shearing hysteresis which lead to soft feeling and stable Shape.

Key words: PTT∕PET bi-component composite fiber, polyurethane fiber, elastic fabric, mechanical property, hand style