Process for coating running webs
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United States of America Patent
Stats
-
Dec 30, 1997
Issued Date -
N/A
app pub date -
May 10, 1996
filing date -
Jun 5, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coating system for material webs, specifically of paper or cardboard, includes two mutually parallel rolls directly coordinated with each other, the rolls having a mutually variable spacing such that the rolls can be positioned to create a press gap for coating the web, or so as not to create a press gap. When the rolls are not positioned to form a press gap, the web passes over both roll shells while circumventing the applicators which have already dosed the roll shells with a coating mixture. The web passes over both roll shells for purposes of transferring the coating mixture predosed by the applicators. Solely the web pull in conjunction with the wrap angle of the two roll shells serves the final dosing by scraping off an excess quantity from the roll shells.
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