Alternately heatable and coolable moulding block

Details Alternately heatable and coolable moulding block Alternately heatable and coolable moulding block

1984-12-17

1986-01-07

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

249 78, 425385, 425407, 425810, 425DIG13, B29C 3508

Patent

active

045631450

ABSTRACT:
An alternately heatable and coolable moulding block for manufacturing plate-shaped information carriers from thermoplastic material, which block is composed of a plate of an electrically insulating material which has a thin metal mould containing the information and in which plate a duct for a cooling liquid is provided and of an electrical conductor wound to form a flat induction coil. Between the mould and the insulating plate, there are provided a layer of a material of good thermal conductivity, which layer is in contact with the mould, and a layer of a ferromagnetic material.

REFERENCES:
patent: 3593376 (1971-07-01), Kisker
patent: 3932097 (1976-01-01), Press

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