High molecular weight high density polyethylene with improved tear resistance
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United States of America Patent
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Jun 3, 1997
Grant Date -
N/A
app pub date -
Dec 12, 1994
filing date -
Dec 12, 1994
priority date (Note) -
Expired
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Abstract
Articles fabricated from certain high molecular weight high density polyethylenes (HMW-HDPE) combined with a second component, exhibit superior puncture propagation tear resistance and puncture propagation tear length. The second component may be an elastomer such as styrene-butadiene-styrene, styrene-isoprene-styrene, EPR, EPDM, butyl rubber, metallocene-catalyzed polyethylene, and combinations thereof. The second component or components will be present in a fabricated article from 1 to 15 weight percent. Articles include films, bags made from films, and extrusion blow-molded articles.
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