High strength ultra-high molecular weight polyethylene tape articles

摘要

Processes for the production of high strength polyethylene tape articles from high strength ultra-high molecular weight multi-filament yarns, and to the tape articles, fabrics, laminates and impact resistant materials made therefrom.

主权项

1. A laminate comprising two or more unidirectional layers of polyethylene tape articles, said polyethylene tape articles having an average cross-sectional aspect ratio of at least about 10:1, said polyethylene having an intrinsic viscosity when measured in decalin at 135° C. by ASTM D1601-99 of from about 7 dl/g to 40 dl/g, and when measured by ASTM D882-09 at a 10 inch (25.4 cm) gauge length and at an extension rate of 100%/min, said tape articles having a tensile strength of at least about 2.2 GPa, with the tape direction in adjoining layers being rotated from each other by from about 15 to about 90 degrees.