Vacuum assisted resin transfer molding (VARTM)

We are skilled in all composite manufacturing processes including processes unique to EPP. Large advanced composite structures are manufactured using pre-preg, resin transfer molding (RTM),vacuum assisted resin transfer molding (VARTM), hand lay-up, and compression molding techniques. Choice of processing technique is an integral part of our design analysis and is determined by criteria that include the future component’s size, geometry, complexity, production quantity and material selection to ensure a cost-effective, high performance structure.

Combining our VARTM and patented pressure equalized vacuum infusion(PEVI) processes, we are able to infuse composite structures taller than 30 foot. The PEVI method equalizes the pressure differences in the infusion and achieves a consistent fiber volume throughout tall structures. This process allows more design choices of resin and reinforcement than traditional pre-preg methods. We infuse composites using a variety of resin systems, such as vinyl esters, rubber toughened epoxies and acrylics. Sandwich structures incorporating rubber, urethane, balsa, and foam cores can be engineered into our infusion designs.

We also have the capability to process composites and rubber products using compression molding. This includes standard matched tool compression molding, rubber transfer molding, extrusion, and autoclave processing. Our presses operate at over 1000 tons and our large autoclave is capable of maintaining 135 psi and 400° F. Final assembly processes can include tight tolerance machining, assembly, post bonding, painting, plus much more.