Blade coating machine having side edge lubrication and process of coating
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United States of America Patent
Stats
-
Jul 21, 1998
Grant Date -
N/A
app pub date -
Jun 11, 1996
filing date -
Dec 22, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for the coating of a travelling web (7), preferably a paper web, comprising a back-up element (3), a metering means (9) cooperating therewith and intended for the application onto the web (7) across essentially the full width thereof a coating liquid (13), a coating blade (17) positioned downstream of the metering means (9), and means for feeding the web (9) in the nip between the back-up element (3) and the metering means (9) and between the back-up element (3) and the coating blade (17). The device further comprises at least one edge lubricating means (27) which is positioned adjacent to one edge (43) of the web and upstream of the metering means (9), and which is arranged to deposit along said one edge (43) a string of lubricating liquid at least up to a position cross-wise and inwardly of the web adjacent to the margin of the coating liquid (13) when applied, whereby uneven wear of the coating blade (17) is avoided; and a process for the coating of a travelling web.
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