Method of producing capacitive electronic discs

Details Method of producing capacitive electronic discs Method of producing capacitive electronic discs

1984-06-12

1985-12-10

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Forming electrical articles by shaping electroconductive...

Conductive carbon containing

264107, 427122, B29D 1700

Patent

active

045578869

ABSTRACT:
Thin, flexible capacitive electronic discs are formed by directly compression molding a powder composition having a particle size such that no particles are larger than about 400 micrometers and a substantial portion is between about 25 and 300 micrometers and comprising a thermoplastic resin, conductive carbon black particles and suitable additives. An information track is embossed into at least one surface of the disc, preferably simultaneously with the molding step. The discs are from about 0.15 to 0.6 mm thick. Preferably, the discs are about 0.2 mm thick, which is about one-tenth of the thickness of present commercial discs.

REFERENCES:
patent: 4512916 (1985-04-01), Datta
patent: 4515830 (1985-05-01), DiMarco

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