Opaque oriented non-thermoplastic polymer film and method of forming same
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United States of America Patent
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Jan 29, 1985
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N/A
app pub date -
Nov 25, 1983
filing date -
Nov 25, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An opaque oriented non-thermoplastic polymer film containing opacifying voids which opacifying voids contain rigid microspheres therein. The method of preparing such an opaque oriented non-thermoplastic film by incorporating rigid microspheres within the non-thermoplastic polymer forming a film thereof and orienting the same to create opacifying voids therein.
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