Coating system

Details Coating system Coating system

1986-07-02

1988-04-19

Bueker, Richard R.

Coating processes

Roller applicator utilized

118249, 118259, 118261, B05D 128, B05C 108

Patent

active

047388790

ABSTRACT:
A coating system is disclosed comprising apparatus for coating webs comprising a rigid, elongated trough, a cylindrical applicator mounted for rotation about its axis within the trough, the trough having an arcuate upstream liquid retaining surface and an arcuate downstream liquid retaining surface substantially parallel to and closely spaced from the lower surface of the cylindrical applicator to define an arcuate coating zone, a manifold between the upstream liquid retaining surface and the downstream liquid retaining surface, the manifold extending substantially parallel to the axis of the cylindrical applicator, the arcuate downstream liquid retaining surface and the arcuate upstream liquid retaining surface extending from the manifold upwardly a sufficient distance along the periphery of the cylindrical applicator to retain most of any liquid in the coating zone, a wall at each end of the trough to retain the liquid in the coating zone, each of the walls being closely spaced from the adjacent end of the cylindrical applicator, an arcuate drain channel adjacent to at least one of the walls to collect overflow liquid from the downstream liquid retaining zone and return the overflow liquid back by gravity to the manifold, and means for continuously introducing liquid into the manifold. A process for using this type of apparatus for coating webs is also disclosed.

REFERENCES:
patent: 2289798 (1942-07-01), Nadeau et al.
patent: 3045592 (1962-07-01), Shearer et al.
patent: 3294060 (1966-12-01), McIntyre et al.
patent: 3492840 (1970-02-01), Korsch
patent: 3552292 (1971-01-01), Gold
patent: 3684561 (1972-08-01), Labombarde
patent: 3722453 (1973-03-01), Dahlquist et al.
patent: 3963549 (1976-02-01), Kohler et al.
patent: 4503802 (1985-03-01), Keller et al.

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