Process for improving dimensional stability of video disc caddy

Details Process for improving dimensional stability of video disc caddy Process for improving dimensional stability of video disc caddy

1982-04-08

1984-01-17

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Treating shaped or solid article

By a temperature change

264235, B29C 2500

Patent

active

044263490

ABSTRACT:
Video disc caddies are treated to maintain dimensional stability by heating them while preventing either inward or outward bowing of the caddy halves for a time sufficient to stress-relieve the plastic.

REFERENCES:
patent: 2896264 (1959-07-01), Natta
patent: 3052924 (1962-09-01), Ezrin et al.
patent: 3971173 (1976-07-01), Friendship
patent: 3985852 (1976-10-01), Evans
patent: 4239108 (1980-12-01), Coleman et al.

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