The Process
The Interwet process, or Internal-Wetting, consists in a solution for the internal co-injection of polyurethane formulations with a large variety of fillers, mostly chopped glass fibre. A standard polyurethane machine meters and send the components up to a special mixing head placed on a robot. Integrated with the head, a chopper cuts the glass fibre rovings and feed the fibre through a vacuum system directly inside the self-cleaning mixing head where it is mixed and wetted with PU. The final mixture is then poured onto an open mould following a pre-set path and pressed until polymerization is completed.
