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US 5,152,838 AGranted
Coating fluid drying apparatus
AssigneePolaroid Corporation
InventorSemyon Kisler
Life of this patent
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Abstract
An improved drying system for drying coating fluids is provided by which conventional drying times are greatly reduced by subjecting the coating on a moving support web to a corona discharge in a manner creating a drying current flow along the length of the coating. Further reductions in drying time are realized by subjecting the coating to an intense electrostatic field, air streams and/or heat from a heated platen.
Claims15
Apparatus for drying coating fluids, comprising:
- a coating applicator for applying a wet coating to one surface of a moving support;
- and
- a corona drying means including at least one corona unit having corona discharge producing electrode means located adjacent to the wet coating for producing a drying current flow along the length of the wet coating.
Dependencies are inferred from the claim text.