Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1976-01-05
1977-07-12
McIntosh, John P.
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
B05C 318
Patent
active
040347079
ABSTRACT:
In apparatus for coating a web, comprising a backup member having an axis, a coating head for receiving coating material and applying it to a web supported by the member for movement transverse to the axis, the head including portions defining the rear and bottom walls of a coating chamber; and a dike system for confining the coating material in the chamber, the system comprising a pair of inboard dikes spaced apart along the axis, each inboard dike having a control surface shaped to conform to the backup member along a margin of the web and having an operating position in which the control surface is spaced from the backup member sufficiently to allow the coating material to bleed between the control surface and the web to coat the margin, the control surface in the operating position being sufficiently close to the backup member to confine most of the coating material to between the inboard dikes; and a pair of outboard dikes respectively spaced outwardly from the inboard dikes along the axis, the outboard dikes each having a sealing surface and an operating position in which the sealing surface is in sealing contact with the backup member to prevent leakage of the coating material bleeding past the inboard dikes; the head being provided with drainage openings for draining the coating material from the zones between the inboard and outboard dikes; that improvement wherein the ends of the backup member are beveled to provide surfaces oblique to the axis, and the outboard dikes are beveled to cause said sealing surfaces to be parallel to and sealingly mate with the oblique surfaces of the backup member.
REFERENCES:
patent: 2593074 (1952-04-01), Trist
patent: 2918899 (1959-12-01), Munton et al.
patent: 3030917 (1962-04-01), Brown et al.
patent: 3079889 (1963-03-01), Jacobs et al.
patent: 3179536 (1965-04-01), Martinek
patent: 3331351 (1967-07-01), Werner
patent: 3936549 (1976-02-01), Kohler et al.
McIntosh John P.
Rice Barton Corporation
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