Abstract:

This paper analyses the applicability and strength losing with abradability of some high performance sewing yarn in the sewing process.It analyses the yarn damage with the method of straight drawing and bend drawing.Abrasion damage and abrasion life of the sewing yarns are investigated by using a self-made tribometer.The results show that the bend drawing strength is twice as much as straight drawing strength.The abrasion damage is one of the primary causes for sewing and strength losing.Abrasion damage becomes more serious with increasing abrasion cycles,and abrasion life becomes shorter with the increase of applied tension and machine speed.

Key words: high performance sewing yarn, drawing, tension after abrasion, abradability