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1. (WO1999007532) METAL-COATED PLASTIC MOULD TOOL

Pub. No.:    WO/1999/007532    International Application No.:    PCT/EP1998/004329
Publication Date: Fri Feb 19 00:59:59 CET 1999 International Filing Date: Tue Jul 14 01:59:59 CEST 1998
IPC: B29C 33/04
B29C 33/38
B29C 33/56
B29C 51/36
Applicants: CIBA SPECIALTY CHEMICALS HOLDING INC.
Inventors: BEZZOLA, Alberto
Title: METAL-COATED PLASTIC MOULD TOOL
Abstract:
A plastics tool formed from a casting resin and having a working face which comprises a pre-formed metal sheet. The pre-formed metal surface may be of any derived metal such as aluminium, steel, stainless steel, galvanised steel, custom textured sheet or copper. The tool can be used in vacuum moulding. Holes are drilled through the metal sheet. The inner of the mould could be a porous mixture of, for example, an epoxy casing resin and an aluminium granulate. The porous layer is surrounded by an impervious covering through which it is attached to a vacuum line, thereby forming a vacuum mould. The mould tool can also comprise heating or cooling tubes.