HEAT SEALABLE MONOAXIALLY ORIENTED PROPYLENE-BASED FILM WITH DIRECTIONAL TEAR
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United States of America Patent
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Issued Date -
Apr 19, 2012
app pub date -
Nov 7, 2011
filing date -
Aug 15, 2008
priority date (Note) -
Abandoned
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Abstract
A monoaxially oriented films and methods of making films including a heat sealable layer including propylene homo-polymer or copolymer and 3-15 wt % of at least one elastomer. The oriented films have a refractive index that satisfies the condition 5≦delta n=|n (MD)−n (TD)|×1000≦25, in which n (MD) is a refractive index of the film in a machine direction, and n (TD) is a refractive index of the film in a transverse direction. The films are suitable for pouch applications requiring an “easy-tear” linear tear feature and excellent hermetic seal properties, particularly for retort pouches
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