GETTING MY CREORA SPANDEX YARN TO WORK

The vital attribute of such molecules is that they're extensive and versatile. This part of the spandex fiber is accountable for its stretching characteristic. One other pre-polymer employed to make spandex is really a polymeric di-isocyanate. This is a shorter chain polymer, that has an isocyanate (-NCO) group on the two finishes. The principal ch