Sandwich injection molding with breakthrough of the core component and hotrunner co-injection nozzle

摘要

A method for the injection-molding of products made of at least two different materials (10,11), consisting, in a first step, in injecting into a mold (2) a first material (10) in an amount that corresponds to the lining of only a surface portion of the mold (2) and, in a second step, in injecting at least one second material (11) in order to lay at the inner portion of the mold (2) lined by the first material and the remaining surface portion of the mold (2).   An injection device (40) for carrying out the method.   A product (12) made of two different materials (10,11) obtained with the method.