HIGH TENACITY LOW SHRINKAGE POLYAMIDE YARNS

摘要

Multi-filament polyamide yarns characterized by high tenacity and low shrinkage are disclosed. Such yarns or fabrics made therefrom can be used in industrial applications in which such a combination of properties is desirable. Such yarns are particularly useful in the manufacture of automobile airbag fabrics. Also disclosed is a process for making such yarns. The yarn manufacturing process involves spin-drawing molten nylon, relaxing and controlling the yarn tension, and then winding the yarn. Yarns made according to this process exhibit linear density in the range of 110 - 940 decitex, tenacity equal to or greater than 80 cN/tex, and shrinkage, measured at 177°C, of less than 5%.