Curtain coating apparatus

Details Curtain coating apparatus Curtain coating apparatus

1977-02-25

1979-01-23

Rimrodt, Louis

Coating apparatus

Projection or spray type

Flexible web or strand work

96 68, 118DIG4, 427420, B05D 130, G03C 300

Patent

active

041354770

ABSTRACT:
An apparatus for curtain coating is provided wherein a falling curtain of coating liquid is formed by causing coating liquid to flow as a layer down an inclined surface of a slide hopper, the inclined surface terminating in a lip and the coating liquid beginning its fall after flowing over the lip on to a travelling web positioned beneath the slide hopper and being coated thereon as a layer. The slide hopper is provided with two vertical edge guiding plates extending parallel to the direction of web motion and being of such width to allow the curtain edge to follow its natural inflected path. Preferably the edge guiding plates are composed of an easily wettable material, particularly polymethymethacrylate.

REFERENCES:
patent: 3365325 (1968-01-01), Fraenkel et al.
patent: 3508947 (1970-04-01), Hughes
patent: 3632403 (1972-01-01), Greiller
patent: 3717121 (1973-02-01), Bruckbauer et al.
patent: 3867901 (1975-02-01), Greiller
patent: 4019906 (1977-04-01), Ridley

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