Elastane is an essential material in our lives. Without it, there would be no women's stockings, no summer swimsuits, no body-hugging tights... It can be said that elastic fibers have made an indelible contribution to human beings showing their bodies and enjoying the comfort of dressing. Flannel fabric has elastic?

The elastic fiber we often see in the composition of clothes is "spandex". Although the content is not high, it is very important. Here is a shopping tip for you:

When shopping online, check the ingredient label of the clothes, and if you see spandex, you can roughly know that the clothes have a slimming effect and can be worn a little tight; for clothes without elastic fibers, generally you need to buy looser, not too close-fitting , otherwise it will hinder normal activities. Is it useful?

The deformation and recovery of hard elastic fibers are significantly different from those of elastic fibers. For example, if the hard elastic PP fiber is stretched for the second time immediately after recovery, its modulus and strength will drop a lot. extension, its deformation recovery is basically close to the first curve. This is because when the hard elastic fiber is stretched and recovered, not only the stretching and retracting deformation of the long chain segment of the crimped molecules of the soft elastic fiber occurs, but also accompanied by some changes in the microporous structure during the stretching process. The wafer network structure has also changed. Only after these structural changes are gradually restored, can they return to their original state, so they deform and recover under higher pressure, which are called hard elastic fibers.