Method and apparatus for cleaning film

G - Physics – 03 – D

Patent

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Details

CPC

141/36

IPC codes

G03D 3/13 (2006.01) G03C 11/06 (2006.01) G03D 15/00 (2006.01) G11B 3/58 (2006.01) G11B 23/50 (2006.01)

Type

Patent

Patent number

CA 1129756

Description

ABSTRACT An apparatus for ultra-sonically cleaning any in- formation bearing material, web, sheet, fiche, film or similar strip material is operable in two modes. The first mode is directed to cleaning the film, and employs a pair of air nozzles for non-evaporatively stripping cleaning solvent from the surface of the film, after the film has been immersed in the solvent. The action of the air nozzles creates a mist of solvent about the nozzles, which is condensed by a plural- ity of cooling coils and collected, and circulates same through a purification system and returns the solvent to the cleaning tank for subsequent reuse in the film cleaning mode of operation. The air emerging from the nozzles is returned to the air compressor, thereby forming a closed loop com- pressor system which minimizes escape of solvent vapors into the atmosphere. After a period of use in the film cleaning mode of operation, a second solvent reclaiming mode of opera- tion drains the contaminated solvent from the cleaning tank, and circulates same through a purification system and returns the solvent to the cleaning tank for subsequent reuse in the film cleaning mode of operation. Both methods use the same cooling coils and purification system.

Application Number

334954

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