مما يتكون سبانديكس? كيمياء الألياف & تصنيع (2026 مرشد)

how spandex made of4

ما هو دنة? دنة, المعروف أيضًا باسم الإيلاستين, is an elastomeric fiber known for its exceptional stretch and recovery. كيميائيا, it’s a polyurethane-based copolymer, defined by industry standards as containing at least 85% polyurethane. This synthetic fiber provides fabrics with flexibility and shape retention, used widely in activewear and stretch garments. This guide details spandex’s […]