Sheeting made from polymers of ethylene and propylene, and its use
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United States of America Patent
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Apr 22, 1997
Grant Date -
N/A
app pub date -
Mar 27, 1995
filing date -
Jul 2, 1993
priority date (Note) -
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Abstract
The invention concerns a sheeting based on polymers of propylene and ethylene, which may contain processing aids, fillers, pigments or other additives. This sheeting is characterized by the fact that it comprises a) a propylene homopolymer having a melt flow index (230.degree. C., 2.16 kg) of about 0.8 to 3.0 g/10 min, a melting point Tm of about 154.degree. to 168.degree. C. (determined by DSC) and an E-modulus of about 900 to 1500 N/mm.sup.2, and b) an ethylene homopolymer having a melt flow index (190.degree. C./2.16 kg) of about 1.5 to 3.0 g/10 min, a melting point Tm of about 110.degree. to 130.degree. C. and an E-modulus of about 200 to 400 N/mm, whereby about 5 to 20 parts by weight of the ethylene homopolymer are mixed with 100 parts by weight of the propylene homopolymer. It can be used in a self-adhesive composite to laminate any object.
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