Method of manufacturing base plates suitable for pressing record

Details Method of manufacturing base plates suitable for pressing record Method of manufacturing base plates suitable for pressing record

1977-12-12

1980-01-29

Beck, Shrive P.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

156 628, 274 41A, 427194, 427203, 427195, 427390A, 427407R, 427211, 428297, 428522, 428526, 428288, B32B 302, G11B 370, B29D 1700

Patent

active

041862295

ABSTRACT:
This invention relates to a method for manufacturing base plates suitable for being pressed into records. The method is characterized in that a core layer is formed by compressing fibrous material followed by a coating of a synthetic material.

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patent: 3983795 (1976-10-01), Bode
patent: 3993518 (1976-11-01), Buck et al.

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