EXAMINE THIS REPORT ON SPANDEX YARN LA GI

The vital aspect of such molecules is that they're extensive and versatile. This Component of the spandex fiber is accountable for its stretching attribute. One other pre-polymer utilised to provide spandex is really a polymeric di-isocyanate. This is the shorter chain polymer, that has an isocyanate (-NCO) group on both of those ends. The principa