Polyester webbing has high strength, strong impact resistance, not easy to break, good heat resistance, good abrasion resistance, poor moisture absorption, strong light resistance, not easy to fade, poor color retention, not easy to color under low temperature dyeing, and requires high temperature (135°C) ) dyeing, black smoke when burning, smelly, less shrinkage (1%).
Polyester spinning
1. FDY (filament): the single fiber is parallel, smooth and even, divided into bright, bright, semi-gloss, and the extinction brightness is getting weaker and weaker
2. DTY (elastic yarn): single fiber bending, low stretch, fluffy
3. DTY network yarn (low elastic network yarn): There are staged network points to increase the bundle ability between fibers (divided into non-network, light mesh, medium mesh and heavy mesh, and the heavy mesh can be used as non-sizing yarn). In general, FDY and DTY must be sizing or twisted before they can be used as warp
Sizing: increase the strength of the silk thread and the cohesion between the fibers, making the surface of the fibers smooth and easy to weave
Twisting: increase the strength, increase the cohesion between fibers, and make the fabric have a crepe effect
Twist: (T) the number of twists per centimeter of silk
For example:
0-10T/CM weak twist
10-20T/CM medium twist
20T/CM strong twist
4. POY (pre-oriented yarn): It can be stretched but not rebounded. It cannot be used as warp or weft alone. It must be compounded with other yarns and can be stretched 1.6 times. POY yarn is a semi-finished product of low-elastic network yarn. Typical fabric: washed velvet
5.ATY (Air Textured Yarn): The surface is not smooth, with loops, typical fabric: velvet
6. Polyester staple fiber: multiple short fibers are twisted along the axial direction
7. Polyester slub yarn: long yarn and low elastic yarn are twisted, and the speed of elastic beads is slow
8. High elastic yarn: high stretch, high fluffy
9. Polyester cationic yarn: It can produce two-color effect with ordinary polyester yarn, easy to dye, bright color.