Coating apparatus – With vacuum or fluid pressure chamber
Patent
1989-04-25
1990-04-03
Nozick, Bernard
Coating apparatus
With vacuum or fluid pressure chamber
118224, 118231, 118501, 15306A, C23C 1400
Patent
active
049130811
ABSTRACT:
A device for aspirating coating material, such as paints, from the applicator gap between two applicator rollers provides two suction tubes, which are disposed horizontally displaceably and whose outlet ends communicate with an apparatus for generating a suction pressure as well as with in apparatus for collecting the aspirated coating material. Particularly when a photoresist is applied to a board-like substrate in the manufacture of printed circuit boards, accumulations of the coating material in the region of the edge of the substrate passing through the apparatus can be avoided without mechanically straining the applicator rollers. By means of the suction pressure apparatus, the quantity of coating material accumulating as the boards to be coated pass through the apparatus can be aspirated continuously and returned via a collection tank to the supply of coating material to be used.
REFERENCES:
patent: 1196438 (1916-08-01), Doyle et al.
patent: 2642030 (1953-06-01), Brink
patent: 2926628 (1960-03-01), Black et al.
patent: 3735729 (1973-05-01), Bird
patent: 3953623 (1976-04-01), Das
patent: 4308077 (1981-12-01), Bolton
Nozick Bernard
Robert Burkle GmbH & Co.
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