Method for the treatment of polyazole films
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United States of America Patent
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Jul 17, 2007
Grant Date -
Jul 27, 2006
app pub date -
Jul 25, 2003
filing date -
Jul 27, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a process for the treatment of polyazole films, in which a film is passed at least twice through a trough filled with a liquid, with the film being unrolled from a spool and rolled up on a further spool and the direction of travel of the film is changed during the treatment by altering the direction of rotation of the spools.
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