Brief introduction of the use of various specifications of spandex yarn

1. 20/15, 20/20: generally used in relatively high-end thin cashmere sweaters or high-end high-tube stockings.
 Features: high price, low efficiency, long delivery time. Both colored yarn and white yarn can be made.

2. 20/30, 20/40: Generally used in relatively high-end silk fabrics, sweaters, wool trousers, socks and body underwear, all kinds of knitted underwear.
 Features: The price is popular, and the amount of body underwear is larger than that of sweaters. Both colored yarn and white yarn can be made.

3. 20/70, 30/70, 20/75, 30/75: Generally used in sweaters, socks and knitted fabrics.
 Features: Widely used, most of the circular knitting elastic knitted fabrics and socks use these kinds of yarns. Both colored yarn and white yarn can be made.

4. 40/70, 40/75: warp knitted fabrics and elastic knitted fabrics with yarn and ribs, 40/75 is widely used in thermal underwear in autumn and winter.
  Features: It is widely used and belongs to conventional products. Both colored yarn and white yarn can be made.

5. 70/70: More used in elastic webbing.
  Features: It can be used for larger drafting elasticity. Both colored yarn and white yarn can be made.

6. 40/100: Two kinds of extension bag and empty bag. The machine bag is used for relatively thin stretch cloth, and the empty bag is used for thermal underwear in autumn and winter.
  Features: Both knitted and woven are available. Both machine-covered colored yarn and white yarn can be made.

7. 40/150, 40/200, 40/300, 70/150, 70/200, 70/300: divided into two types: empty bag and machine bag, mainly used in thicker fabrics, such as elastic corduroy, denim, etc.
  Features: It can only be used on shuttle looms, the price of the machine bag is higher than the price of the empty bag. Both machine-covered colored yarn and white yarn can be made.

8. Elastic wrapped yarn: The model can be divided into R975 (ie 90# rubber band wrapped with 75D polyester elastic yarn), R970 (ie 90# rubber band wrapped with 70D nylon) yarn, and the varieties are from 110#-----37# , The smaller the number of "#", the thicker the yarn. Generally, the thicker is used for webbing or sporting goods, and the thinner is used for socks or sweater cuffs.
  Features: Not resistant to high temperatures. Both colored yarn and white yarn can be made.

9. Other types of yarns: such as acrylic, polyester, cotton yarn, viscose single and double yarns, and various blended yarns and ply yarns (two, three, four, etc.) can be customized 
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