Resin Infusion

Resin Infusion

Cost Effective & Structurally Sound ▪ Composite Plate ▪ Complex Geometric Parts ▪ Our RTM/VARTM

Rock West Composites uses a simplified version of resin transfer molding (RTM) or vacuum assist resin transfer molding (VARTM). This process yields parts with far superior structural properties than capable from using a traditional wet layup process.

It can also produce cosmetically beautiful parts!

What is the resin infusion process?

A vacuum is generally created using a vacuum pump or a vacuum generator (uses compressed air to generate vacuum).

  1. Resin is mixed in appropriate ratios and de-gassed
  2. The laminate is simultaneously vacuum bagged and sealed awaiting Infusion
  3. The next step is to introduce the resin. Pre-mixed and de-gassed resin is pulled from one end of the laminate to the other, assisted by vacuum, thereby filling all voids in the carbon fiber material
  4. Once completely infused, the hoses are sealed off and left to cure.

Cure times vary depending on the resin system used.

When do we use this process?

This method can be used for projects requiring composite structures that are small or extremely large. We use it primarily for large flat plate stock (10’+), and it is a great method when an autoclave is not available and or the cost of operating an autoclave is unjustifiable.