Process for transversely stretching polyethylene terephthalate film
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United States of America Patent
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-
Dec 9, 1980
Grant Date -
N/A
app pub date -
Aug 9, 1979
filing date -
Aug 9, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is disclosed for transversely stretching amorphous polyethylene terephthalate film wherein the temperature is adjusted to be substantially uniform across the web before stretching, heat is removed during stretching, and after stretching, the temperature is 1 to 15C..degree. lower and is uniform across the web.
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