Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1991-06-26
1993-05-25
Bennet, Henry A.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 40, 34 72, 34 54, 34 36, 118 61, F26B 300
Patent
active
052128776
ABSTRACT:
A running substrate which is coated with a solvent-containing material is conveyed through several sections of a drying unit and is dried with a stream of inert gas which is conveyed counter to the direction of movement of the substrate. The temperature of inert gas is reduced during flow from section to section and the quantity of solvent in the inert gas is maintained slightly below saturation value during the initial stage of the drying operation to thus enhance the surface finish of the coating. The stream of inert gas is circulated along an endless path a portion of which coincides with the path for the substrate, and the inert gas is heated to maximum drying temperature before it enters the downstream end of the path for the substrate.
REFERENCES:
patent: 4118873 (1978-10-01), Rothchild
patent: 4150494 (1979-04-01), Rothchild
patent: 4185397 (1980-01-01), Hutzenlaub
patent: 4223450 (1980-09-01), Rothchild
patent: 4365954 (1982-12-01), Petzi
patent: 4370357 (1983-01-01), Swartz
patent: 4543060 (1985-09-01), Bowes
patent: 4886564 (1989-12-01), Pagendarm
patent: 4894927 (1990-01-01), Ogawa et al.
Johnke Georg
Onur Emin
Bennet Henry A.
Gromada Denise
Kontler Peter K.
Pagendarm GmbH
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