B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
32/39
B05C 3/132 (2006.01) B05C 3/18 (2006.01)
Patent
CA 1228476
ABSTRACT Apparatus for an one-sided or two-sided coating of a vertically travelling web comprising a coating applicator, in which said web is in contact with a coating substance held at atmospheric pressure, and a flexible blade co- operating with a back-up member for levelling a coating substance layer attached at the web. According to the invention, said applicator comprises a flow regulator which forms between it and the web a clearance. This clearance is mainly of even height or is inclined in the travel direction of the web. This height is smaller than a thickness of an eventual coating substance attached to a web without a co- operation with a regulator and the web. The applicator is further provided with means for arranging a gravity controlled over-flow and a backstream substance flux. The backstream flux is governed by the coating substance supply to the applicator, the viscosity of coating substance, the speed of the web travel and a slot of said applicator so that only a small amount of the coating substance flows downwardly through this slot during normal operation of said apparatus. Said slot forms a web entrance at the bottom of the applicator.
453800
Kirby Eades Gale Baker
Oy Wartsila Ab
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