Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1987-08-14
1988-12-27
Warner, Steven E.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
34160, 34242, F26B 1300
Patent
active
047930730
ABSTRACT:
An apparatus for continuously developing travelling bands of film has a tank which accommodates a processing bath. A device for the removal of moisture from film leaving the tank is located in the region of the tank exit. The device includes a substantially airtight enclosure having registering slot-like inlet and outlet openings for the film. The inlet and outlet openings divide the enclosure into two portions. A suction nozzle is disposed in each portion and is provided with a suction opening which faces the path of the film. Flexible sealing strips are arranged adjacent to the inlet and outlet openings of the enclosure. When there is no film passing through the enclosure, the sealing strips essentially close the inlet and outlet openings so that a vacuum is maintained in the enclosure. The sealing strips are bent away from the inlet and outlet openings during the passage of film through the enclosure. The flexibility of the sealing strips is sufficiently great that the suction generated by the suction nozzles can cause air cushions to be developed and maintained between the sealing strips and the film. The device makes it possible to uniformly remove moisture from the film without contacting the latter.
REFERENCES:
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patent: 4348817 (1982-09-01), Bradshaw
patent: 4411075 (1983-10-01), Blaudszun
Agfa-Gevaert Aktiengesellschaft
Kontler Peter K.
Warner Steven E.
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