Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1984-12-17
1987-08-25
McIntosh, John P.
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
118413, B05C 502
Patent
active
046885161
ABSTRACT:
A device for coating webs of material traveling over a backing roll to a controlled thickness, in which the coating material can be applied to the web with a slotted nozzle that extends over the total width of the web and in which the nozzle has an initial-flow regulation gap downstream of which a flow-regulation lip and an excess-removal lip demarcate a flow-regulation chamber. To allow more uniform and higher-quality application of the coating medium and, in particular, to ensure heavier coating weights and improved web printability with simple means, a barrier that demarcates the flow-regulation chamber from the traveling web of material is positioned to the vicinity of the excess-removal lip. The barrier can consist of a knife-like sheet-metal spring, of a roll, of a strip, or of a jet directed opposite to the direction in which the web is traveling. The barrier prevents an isolating layer of air from penetrating into the flow-regulation chamber.
REFERENCES:
patent: 2033379 (1936-03-01), Jenkins et al.
patent: 2796846 (1957-06-01), Trist
patent: 4369731 (1983-01-01), Damrau
patent: 4396648 (1983-08-01), Holt et al.
Jagenberg AG
McIntosh John P.
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