High strength ultra-high molecular weight polyethylene tape articles
AssigneeHoneywell International Inc.
InventorsThomas Tam, Ashok Bhatnagar, Mark Benjamin Boone, Steven Correale
Life of this patent
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Abstract
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.
Claims4
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.
A fabric comprising 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, said fabric being selected from the group consisting of woven, knitted and three dimensionally woven.
Dependencies are inferred from the claim text.