The Process
S-RIM is the next step with respect to the traditional low pressure RTM. A complete composite part can be obtained in a time ranging from less than 2 to 5 minutes, depending on the reaction time of the chemical and on the various process parameters. S-RIM consists in the injection of a multi-component mixed thermoset PU matrix into a closed mould in which a dry reinforcement preform has been previously placed, and where vacuum has been applied. After polymerization, the mould is opened and the finished part is extracted.
