POLYOLEFIN FILM, TAPE OR YARN
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United States of America Patent
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app pub date -
Oct 29, 2007
filing date -
Jul 19, 2001
priority date (Note) -
Abandoned
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Abstract
The invention is directed to monoaxially drawn polyolefin multilayer film, tape or yarn of the AB or ABA type, having a stretch ratio of more than 12, having an E-modulus of at least 10 GPa, substantially consisting of a central layer (B) of a polyolefin selected from polyethylene and polypropylene, and one or two other layers (A) of a polyolefin from the same class as the material of the central layer B, the DSC melting point of the material of the said other layers (A) being lower than the DSC melting point of the material of the said central layer (B), wherein the central layer (B) is between 50 and 99 wt. % of the material and the other layers (A) between 1 and 50 wt. %. The present invention further relates to a method of manufacturing such a tape, film or yarn.
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