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US 5,264,024 AGranted
Method for degassing an aqueous composition and device for carrying out this method
AssigneeEastman Kodak Company
InventorsJean-Claude Bosvot, Jacques Le Faou
Life of this patent
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Abstract
The present invention is a method for degassing an aqueous composition of chunked gelatin. Prior to melting the gelatin chunks, the gelatin is subjected to a pressure near the steam pressure corresponding to the temperature of the gelatin chunks. Application of this pressure degasses the gelatin chunks to that they can be sent directly to the melter and to the coating station.
Claims5
A method for degassing a photographic emulsion comprising:
- a) feeding a vacuum chamber with the photographic emulsion, the photographic emulsion being in solid chunk form and each chunk having a volume of 2.5 cm.sup.3 or less;
- b) applying a pressure to the photographic emulsion in solid chunk form, the pressure being approximately the steam pressure corresponding to the temperature of the photographic emulsion;
- c) transporting said photographic emulsion out of the vacuum chamber;
- and
- d) melting said photographic emulsion.
2 more elements
Dependencies are inferred from the claim text.