Thin LCP film process
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United States of America Patent
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-
Aug 4, 1998
Grant Date -
N/A
app pub date -
Mar 28, 1995
filing date -
Mar 28, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing LCP films that have improved tear resistance, improved balance of physical properties, and relatively wrinkle-free surfaces. An annular co-extrusion die is used to line the LCP with one or more surface layers of a nonadherent polymer before the LCP becomes shear oriented. The multi-layer tube formed by the co-extrusion is sealed, stretched and cooled by passing it over a sizing mandrel. The tube is slit open into a flat configuration.
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