Method to center and separate electroformed replicas from a matr

Details Method to center and separate electroformed replicas from a matr Method to center and separate electroformed replicas from a matr

1982-02-01

1983-07-19

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

Utilizing surface to be reproduced as an impression pattern

264220, 264227, 264264, 249 66R, 204 5, 204281, 425436RM, 425810, B29C 102

Patent

active

043943411

ABSTRACT:
An improvement is disclosed in the matrixing process employed in the manufacture of molded records. The improvement consists of using an insert in the matrixing process which is secured to the center portion of the matrix to be duplicated prior to electroforming a replica on the surface of the matrix. Metal is then electroformed over the surface of the matrix and the insert to form the replica and the insert is thereafter used to apply force at the center portion of the replica to force it away from the matrix on which it is formed.

REFERENCES:
patent: 2890160 (1959-06-01), Hunting
patent: 2905614 (1959-09-01), Porrata
patent: 3019482 (1962-02-01), Houten
patent: 3316607 (1967-05-01), Kroll
patent: 3801476 (1974-04-01), Roschmann
patent: 3956075 (1976-05-01), Rohwer
patent: 3975489 (1976-08-01), Mercer
patent: 4242292 (1980-12-01), Mercer

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