B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
32/48, 32/59, 11
B05C 15/00 (2006.01) B05C 5/00 (2006.01) B05D 1/26 (2006.01) B05D 1/30 (2006.01) G03C 1/74 (2006.01) B05C 9/06 (2006.01)
Patent
CA 1156101
COATING APPARATUS PROVIDED WITH A PROTECTIVE SHIELD ABSTRACT OF THE DISCLOSURE Coating apparatus for carrying out a process of coating in which one or more layers of coating com- position are applied to the surface of an object, such as a continuous web or discrete sections of sheet material, by advancing the object through a coating zone in which a flow of coating composition is applied thereto, for example, bead coating or curtain coating apparatus, is provided with a shield to protect the flow of coating composition against disturbance by ambient air currents. The shield is formed of a fora- minous material, such as screening or perforated plate material, which functions to diffuse air currents impinging thereon so that their velocity is decreased, with a resulting decrease in their ability to disturb the flow of coating composition. Particular advantage is achieved in using the shield in processes for coat- ing photographic materials, especially in high speed curtain coating operations involving a substantial height of free fall, and in bead coating operations employing a slide hopper where ambient air currents give rise to a problem of differential evaporation of coating composition on the slide surface.
372773
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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