Device for coating a material web

Details Device for coating a material web Device for coating a material web

1990-06-19

1992-01-07

Woo, Jay H.

Coating apparatus

Solid member or material acting on coating after application

Rotary member

118126, 118414, 118419, B05C 318, B05C 1104

Patent

active

050780816

ABSTRACT:
On a coating device, at the mouth originating from the chamber for the coating substance, there is provided, between said mouth and the backing roll or web, a cover body which on its surface near the mouth forms an outlet channel that extends away from the space through which at the doctor blade flows the coating substance. This outlet channel has a throttle effect. Additionally, the cover body forms relative to the doctor blade a second throttle channel which is located relatively close to the smoothing edge of the doctor blade. At the outlet of the second throttle channel, the cover body preferably extends into a point which is arranged relatively close to the backing roll or web. The outlet channel can suitably be formed between a base body and the cover body, with the base body ending at a distance from the doctor blade that is maximally 10 mm greater than the clearance of the second throttle channel.

REFERENCES:
patent: 4405661 (1983-09-01), Alheid
patent: 4643127 (1987-02-01), Wanke
patent: 4688516 (1987-08-01), Sommer
patent: 4702196 (1987-10-01), Kratzberger
patent: 4791879 (1988-12-01), Eklund et al.
patent: 4873939 (1989-10-01), Eskelinen
patent: 4903632 (1990-02-01), Sollinger

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