Coating device

Details Coating device Coating device

1988-12-05

1990-02-27

Hoag, Willard

Coating apparatus

Solid member or material acting on coating after application

Running length work

118126, 118410, 118419, B05C 104, B05C 116

Patent

active

049036327

ABSTRACT:
A coating device for coating moving material webs running over a backing roll has a front wall, coating element, and side seals cooperating to provide a sealed application space for the material web near the backing roll, which application space is preferably at a pressure above atmospheric pressure and has a coating mixture flowing therein from a chamber. A baffle connected to the front wall provides a run-out gap therebetween and cooperates with the backing roll to provide a hydrodynamic pressure gap at the material web run-in side, such that coating mixture from run-out gap is entrained by the speed of the material web for reintroduction to application space through hydrodynamic pressure gap.

REFERENCES:
patent: 3150997 (1964-12-01), Pelletier et al.
patent: 3179536 (1965-04-01), Martinek
patent: 4250211 (1981-02-01), Damrau et al.
patent: 4369731 (1983-01-01), Damrau
patent: 4405661 (1983-09-01), Alheid
patent: 4495888 (1985-01-01), Wohrle et al.
patent: 4643127 (1987-02-01), Wanke
Eck, Technische Stromungslehre, pp. 3 & 3.5, Springer-Verlag, Berlin (not dated) and Translation.

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