Ballistic-resistant article including one or more layers of cross-plied uhmwpe tape in combination with cross-plied fibers
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United States of America Patent
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Jul 5, 2011
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N/A
app pub date -
Nov 20, 2009
filing date -
Jul 30, 2007
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Abstract
A ballistic-resistant molded article having a sandwich-type structure including two outer portions of a first high modulus material surrounding an inner portion of a second high modulus material. The outer portions are comprised of a plurality of interleaved layers of adhesive coated cross-plied non-fibrous ultra high molecular weight polyethylene tape. The inner portion is comprised of a plurality of interleaved layers of high modulus cross-plied fibers embedded in resin. The stack of interleaved layers is compressed at high temperature and pressure to form a hybrid sandwich ballistic-resistant molded article that includes a mix of high modulus materials. It has been found that ballistic resistance is higher for the hybrid structure than for a monolithic structure of comparable areal density.
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