Production of elastomer parts manufactured by duplication, based on a reference standard model

A method for making a textured moulding cavity, in particular for moulding elastomer parts with surface texturing, comprising the following steps:

• Provide (1) a natural model whose surface condition is to be reproduced on an elastomer part;
• Place (2) the natural model between two sheets of a first calendered elastomeric material to form a cavity acquisition assembly;
• Place (3) the cavity acquisition assembly between two sheets of a second calendered elastomeric material different from the first elastomeric material calendered into elastomer so as to cover the cavity acquisition assembly;
• Place (4) the whole between two compression plates of a stoving shuttle and close said shuttle by tightening said two plates against each other in order to compress the sheets of the second calendered material on the cavity acquisition assembly between said plates;
• Heat the stoving shuttle for a period between 20 minutes and 60 minutes at a temperature between 80° C. and 200° C. to at least partially vulcanize each sheet of calendered elastomeric raw material and overmould said natural model in one face thereof;
• Open the shuttle and remove the natural model from between the cavity acquisition blocks to obtain two textured moulding cavities comprising a sheet of calendered vulcanized elastomeric raw material at least partially vulcanized.