THE FACT ABOUT SPANDEX YARN THAT NO ONE IS SUGGESTING

The crucial characteristic of these molecules is that they're very long and versatile. This part of the spandex fiber is to blame for its stretching characteristic. Another pre-polymer used to supply spandex is actually a polymeric di-isocyanate. It is a shorter chain polymer, that has an isocyanate (-NCO) team on both of those finishes. The princi