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US 2015/0020546 A1Published application
Warp knitted fabric comprising polytrimethylene terephthalate and method of making same
AssigneeE. I. Du Pont de Nemours and Company
InventorLizhi Zhang
Life of this patent
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Abstract
This invention relates to warp knit fabric having a locknit pattern comprising polytrimethylene terephthalate yarn and elastic yarn having a weight ratio of from 70:30 to 90:10. The fabrics have a soft hand feel, better colorfastness after chlorine exposure and UV radiation as compared to other performance wear fabrics containing elastic yarn polyethylene terephthalate yarn.
Claims8
A warp knit fabric having a locknit pattern comprising:
- polytrimethylene terephthalate (PTT) yarn having a total fineness in the range of 30-75 deniers;
- and
- elastic yarn having a total fineness in the range of 20-70 deniers and an elongation at break greater than 100%;
- wherein the warp knit fabric having a locknit pattern comprises:
- (a) a weight ratio between the PTT yarn and the elastic yarn in the range of 70:30 to 90:10;
- (b) a course density in the range of 15-35 courses/cm and a basis weight in the range of 180 g/m2 or greater;
- and
- (c) an elongation in the range of 120% to 185% in the warp direction and an elongation in the range of 80% to 150% in the weft direction.
5 more elements
Dependencies are inferred from the claim text.