Biaxially Oriented Polypropylene Film for Labels
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Apr 13, 2005
filing date -
Apr 15, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a multi-layered biaxially oriented polypropylene film consisting of a base layer, a covering layer (I) which is applied to a first side of the film and contains at least between 80 and 100 wt. % of a propylene-ethylene copolymer, and another layer (II) which is applied to the opposing second side and contains between 40 and 100 wt. % of a propylene-ethylene copolymer. The propylene-ethylene copolymer of the two layers contains a maximum of 2.5 wt. % of ethylene and has a melting point between 145 and 160° C. The curl of the film can be controlled very well.
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