Method and apparatus for spray-coating a paper or board web

Details Method and apparatus for spray-coating a paper or board web Method and apparatus for spray-coating a paper or board web

1996-10-10

1998-12-15

Beck, Shrive

Coating processes

Spraying

427345, 427424, 118324, 118325, 118326, B05D 700

Patent

active

058493212

ABSTRACT:
A method and apparatus for spray coating a paper or board web in which a coating paste or mix is applied as an aerosol to the web in an enclosed space or chamber. A flow of the coating paste flows down at least one of the interior walls of the enclosed space, thereby collecting excess coating paste aerosol and providing a seal between the web and the walls of the enclosed space. By providing this seal, the amount of excess coating paste aerosol escaping from the enclosed space and the amount of air travelling along the surface of the web are both reduced, thereby increasing the quality of the applied coating.

REFERENCES:
patent: 4257344 (1981-03-01), Coq
patent: 4448818 (1984-05-01), Hartog et al.
patent: 4520755 (1985-06-01), Inukai et al.
patent: 4944960 (1990-07-01), Sundholm et al.

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