Film or sheet forming apparatus
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United States of America Patent
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-
Jan 29, 2008
Grant Date -
Dec 30, 2004
app pub date -
Jun 25, 2004
filing date -
Jun 27, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
To form a film or sheet relatively thin and needing a high degree of precision in thickness, such as for an optical use, while suppressing temperature fluctuations at one side opposite to the other side in contact with an outer peripheral surface of a roll (11), an outer peripheral surface of the roll is covered, with a necessary gap (t) left, by a windshield (20) of a double-layered structure having a thermally insulating property.
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