Coating apparatus – With vacuum or fluid pressure chamber
Patent
1979-01-29
1981-03-24
Kaplan, Morris
Coating apparatus
With vacuum or fluid pressure chamber
118126, 118413, B05C 312, B05C 1104, B05C 1110
Patent
active
042573432
ABSTRACT:
In coating a strip of material, such as web of paper, it is passed over a support member forming one of the enclosing surfaces of a closed chamber. The closed chamber is arranged to operate under vacuum conditions. Coating liquid is supplied in excess to the closed chamber to form a layer on the surface of the strip. At the end of the coating action, as the strip leaves the closed chamber, it is contacted by a movably positionable blade which provides a wiping-off action on the strip so as to remove the excess of coating liquid from the strip. The vacuum inside the closed chamber urges the blade against the strip. Therefore, it is possible, by varying the vacuum, to vary the amount of coating liquid adhering to the strip leaving the closed chamber.
REFERENCES:
patent: 2257373 (1941-09-01), Fanselow
patent: 2354033 (1944-07-01), McGladrey et al.
patent: 3192895 (1965-07-01), Galer
patent: 3335701 (1967-08-01), Verkinderen et al.
patent: 3461837 (1969-08-01), Dreher
patent: 3486482 (1969-12-01), Hunger
patent: 3502494 (1970-03-01), Ishiwata et al.
patent: 3690917 (1972-09-01), Herzhoff et al.
patent: 3695218 (1972-10-01), Herzhoff et al.
patent: 3722465 (1973-03-01), Krautzberger
Billeruds Aktiebolag
Kaplan Morris
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