Mold, method for manufacturing a mold and method for manufacturing a plastic or composite material product by means of said mold

摘要

An induction-heated mold, including at least one lower portion and one upper portion defining a cavity inside of which a molding material is to be brought to a temperature Ttr greater than 20° C., which is introduced and then shaped, at least one of the mold portions having an area for transferring heat with the molding material, the heat transfer area including at least one sub-area consisting of at least one ferromagnetic material the Curie point Tc of which is between 20 and 800° C. and which is in contact with the molding material and/or with a non-ferromagnetic coating having a thermal conductivity greater than 30 W.m−1.K−1. A method for manufacturing a plastic or composite material product via of the molds according to the invention.

主权项

1. A mold comprising:
at least one lower portion and one upper portion delimiting a cavity, the upper and lower portions being heated by the action of an induced current generated by at least one electromagnetic inductor, wherein the mold is configured to allow a molding material to be brought to a temperature Ttr of more than 20° C. to be introduced into the cavity and to shape the molding material by contact with the lower and upper portions of the mold at least one of the lower and upper portions having a heat transfer area configured to be in contact with the molding material during shaping, the heat transfer area comprising at least one ferromagnetic material having a Curie point Tc between 20 and 800′C, at least one sub-area of the heat transfer area is coated with a non-ferromagnetic material with a heat conductivity of more than 30 W.m−1K−1, the coating being configured to be in contact with the molding material during shaping, and configured such that in the rest of the heat transfer area the at least one ferromagnetic material is in contact with the molding material during shaping.