Apparatus and method for application of a liquid or pasty medium onto a passing substrate
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United States of America Patent
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Oct 22, 2002
Grant Date -
N/A
app pub date -
May 12, 1998
filing date -
Jun 4, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for application of a liquid or pasty coating medium onto a substrate moving past it, for instance a material web of paper, cardboard or boxboard or an applicator roll, includes a back-up chamber which is bounded on its substrate entrance end by a back-up chamber entrance bounding element and on its substrate exit end by a back-up chamber exit bounding element. The apparatus also includes a feed device for feeding the coating medium. In the applicator according to the invention for achieving a uniform coating application, the feed device, viewed in the direction of travel of the substrate, is arranged before the back-up chamber entrance bounding element.
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