Multilayer Films Including Cycloolefin Copolymer and Styrene-Butadiene Copolymer
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United States of America Patent
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Issued Date -
Mar 27, 2008
app pub date -
Feb 22, 2006
filing date -
Feb 23, 2005
priority date (Note) -
Abandoned
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Abstract
A packaging film or sheet having a styrene-butadiene block copolymer directly melt-bonded to at least one layer of a cyclo-olefin copolymer is disclosed. The films may be made by means of co-extrusion. The packaging film is amenable to thermoforming processes and is particularly suitable for forming blister packaging used in pharmaceutical applications.
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