Compression moulding method for thermosetting resins, elastomers in general and natural rubbers, with or without inserts, as well as moulds and presses used with this method.

摘要

This invention pertains to a compression molding technological process, on standing presses and through heated metal molds, of thermosetting resins as well as elastomers in general and natural rubbers. According to this method, or process, instead of being produced onto the whole piece surface during the matching of the two molds compression pressure operates on the contrary only after they are entirely matched and only on a limited surface of raw materials to be treated and lying in an additional chamber (3) obtained in one of the two half-molds and where the compression pressure is made, for example, by a piston (4).