Vacuum forming of resin-impregnated composites uses a flexible mold surface and air pressure to control resin distribution in flow channels

摘要

The mold cover has a flexible surface (1a), e.g. a film, which is drawn against the body (1b) when a vacuum is applied at a connection (1c). This opens flow channels to aid distribution of the resin (5) that is drawn in by a lesser vacuum applied at a connection (7). When filling is complete air pressure is applied at the first connection (1c) and any excess resin is driven towards the vacuum connection (7).