THE FACT ABOUT SPANDEX YARN THAT NO ONE IS SUGGESTING

The essential feature of such molecules is that they're extended and flexible. This Component of the spandex fiber is to blame for its stretching characteristic. The other pre-polymer made use of to supply spandex is really a polymeric di-isocyanate. This is a shorter chain polymer, which has an isocyanate (-NCO) team on equally ends. The principal