Apparatus and methods for distributing liquid over a surface

Details Apparatus and methods for distributing liquid over a surface Apparatus and methods for distributing liquid over a surface

B - Operations, Transporting

05

D

117/106

B05D 1/40 (2006.01) B05C 11/105 (2006.01) C23C 18/16 (2006.01) G03F 7/16 (2006.01) H05K 3/00 (2006.01)

Patent

CA 1144011

24. METHOD FOR DISTRIBUTING LIQUID OVER A SURFACE Abs tract A surface of a substrate (11) (FIG. 2) is uniformly coated with a liquid (L) by wetting the surface with the liquid and compressibly contacting the wetted surface with an applicator member (10) having an outer layer (14) of a compressible liquid absorbing material with inverse sponge characteristics and an inner layer (13) of compliant material. Preferably, the member (10) is a roller having a silicone rubber or polyurethane inner layer and a chamois outer layer. The substrate is thus coated with a layer having an unusually uniform thickness, including a uniformly thick layer through openings through the substrate. Also, buildup of ridges of the coating caused by dripping is avoided.

349965

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