Film transfer device
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United States of America Patent
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Aug 5, 2014
Grant Date -
Nov 17, 2011
app pub date -
May 3, 2011
filing date -
May 11, 2010
priority date (Note) -
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Abstract
A film transfer device guides a transfer film at least partly around a transfer cylinder having a channel. As a result of entrainment of the transfer film by an edge region of the channel during indexing, considerable impairment to web tension occurs, requiring an indexing speed to be reduced so as not to cause damage to the film. In order to increase an indexing frequency, in one region, i.e. more precisely in an edge region of the channel of the transfer cylinder, a coating is provided having such a nature that it at least reduces an adhesion of a rear side of the transfer film to the edge region of the channel, i.e. to the transfer cylinder in this case. In this way, the film slides better off the edge region of the channel and a higher indexing speed can be achieved.
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