Drying process for video discs

Details Drying process for video discs Drying process for video discs

1980-07-07

1983-05-17

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Forming sound grooves in records

Die pressing disk type records

264233, 425810, 134199, B29D 1700

Patent

active

043839614

ABSTRACT:
Video discs are dried by first spraying the surface with liquid fluorocarbon to remove water and heating the disc so as to prevent water condensation during evaporation of the fluorocarbon, preferably in a fluorocarbon vapor.

REFERENCES:
patent: 2663050 (1953-12-01), Helm
patent: 3479222 (1969-11-01), David
patent: 3842194 (1974-10-01), Clemens
patent: 3981947 (1976-09-01), Kaufman
patent: 4202071 (1980-05-01), Scharpf
patent: 4275100 (1981-06-01), Datta

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