Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1988-04-06
1989-12-19
Beck, Shrive
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
118413, B05C 302
Patent
active
048875473
ABSTRACT:
The invention relates to a method and an apparatus for continuously applying a uniform coating to a material web (5), in particular a paper or cardboard web, travelling over a back roller (6), to which the coating material is applied at low pressure by means of a coating roller (2) and with guidance by a guide plate (8) into the coating gap (7) formed by the back roller and the coating roller, whereupon the coating material is metered by a metering member (15) and in the region of a layer close to the material web is partly drained in order to form a barrier layer and final metering takes place in a final metering device (23) by means of a final metering member (24) with low contact pressure. Due to a three-stage method of this type and the apparatus suitable therefore, even at comparatively high material web speeds, constant good coating qualities can even be achieved with extremely low coating weights.
REFERENCES:
patent: 3474757 (1969-10-01), Dreher
patent: 3486482 (1969-12-01), Hunger
patent: 3533833 (1970-10-01), Takahashi et al.
patent: 4396648 (1983-08-01), Holt et al.
Ruckert Hans
Sommer Herbert
Bashore Alain
Beck Shrive
Jagenberg Aktiengesellschaft
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