Resin transfer moulding (RTM) is an attractive, versatile, and cost-effective alternative to autoclave processing for manufacturing geometrically complex, structural polymer matrix composites (PMC). RTM is a process in which resin is introduced to a laminate containing dry fibre.
Simple, low cost, open mould fabrication process using liquid epoxy resin to position layers of laminations in a mould until desired shape/thickness is achieved. Woven such as plain, twill, plain basket waves, knitted, stitched bonded fabric layers are impregnated with an appropriate epoxy resin system by brush or roller to ensure high quality composite components/parts meet specific end use requirements.
The most common manufacturing process for fiberglass is the wet lay-up or chopper gun spray process using an open mould. The shape of the part is determined by the shape of the mould, and the mould surface is typically in contact with the exterior of the part.
The even distribution of vacuum pressure aids in a more precise control of the fibre/resin ratio. The working environment is also greatly improved as resin films are trapped under tile vacuum bag and ventilated through the exhaust system.
