What is the difference between high-elastic and low-elastic yarns?

High elastic yarn is now more and more popular in the market, first of all, they have a big difference:

1. Production process, the low-elastic wire is heated twice, and the high-elastic wire is heated once;

2. They are also very different in terms of rebound, identify the low elastic wire first pull out with both hands and put it, let go and then look at its resilience, there is almost no rebound, and the high elastic wire, is the same to pull it outside, its resilience is very fluffy, the high elastic wire will be better, the low elastic wire pulls its resilience outward, this is the difference between the high elastic wire and the low elastic silk,