Draw Texturing Integration and Draw Ratio Control
topic
Draw texturing machines process partially oriented yarn in a single integrated draw-texturing operation by feeding POY at reduced speed to the friction twist unit with simultaneous drawing at draw ratios of 1.4 to 1.8 applied between the first and second feed rolls, combining orientation drawing that develops filament tenacity and the false twist texturing operation in one machine pass that eliminates the separate drawing stage required for fully drawn yarn texturing.
Role
Produces draw-textured yarn from POY in a single economical machine pass that combines the drawing and texturing operations previously requiring two separate processing stages, with draw ratio control being the critical parameter governing both the filament tensile properties developed during drawing and the crimp geometry produced during simultaneous texturing that together determine the physical performance of the draw-textured yarn.