Method and apparatus for coating strip article up to strip edge

Details Method and apparatus for coating strip article up to strip edge Method and apparatus for coating strip article up to strip edge

1994-11-23

1996-10-29

Beck, Shrive

Coating processes

Nonuniform coating

Edge or border coating

427355369/, 118410, 118413, B05D 312, B05D 500, B05C 302

Patent

active

055694918

ABSTRACT:
Apparatus for coating a strip article comprises a coating head having a coating surface and elongated open-sided slot formed in the coating surface communicating with an interior channel for delivery of coating material to said slot for transfer to a strip article to be coated. The slot has a slot extension extending into the coating surface at at least one longitudinal end of the slot for applying coating material to an edge region of the strip article. The slot extension communicates with the interior channel only through a constricted opening that prevents substantial leakage of coating material from the slot extension when the slot extension becomes uncovered by the edge region of the strip article. In this way, the strip article can be coated completely up to its transverse edges, without risk of substantial spillage of coating material if the ends of the coating slot become uncovered by the strip article due to inaccurate tracking or variable strip width.

REFERENCES:
patent: 4480583 (1984-11-01), Tanaka et al.
patent: 4675230 (1987-06-01), Innes
patent: 4867097 (1989-09-01), Foltz
patent: 5083524 (1992-01-01), Hiraki et al.
patent: 5206056 (1993-04-01), Shibata et al.

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