Resin Transfer Molding

TJH Composites is well-practiced in the art of RTM and LRTM. We have been consistently producing uniform, high-quality parts & products using this technique. We would love to talk to you about any project or product we may be able to help you create using resin transfer molding.

What is RTM?

Resin transfer molding (RTM) is a method of fabricating high-tech composite structures. The RTM process is capable of consistently producing composite parts with high strength, complex geometries, tight dimensional tolerances, and part quality typically required of aerospace applications.

RTM is one of the best methods for the mass production of composite parts. When a component that has a large surface with complex shapes and smooth finishes is required RTM is the preferred process.

That is one of the reasons the automotive, industrial and agricultural industries have been using Resin Transfer Molding process for decades.

Benefits of Resin Transfer Molding

RTM has several benefits when compared to other available processes, they include:

What is Light Resin Transfer Molding or LRTM?

Light Resin Transfer Molding or LRTM is similar to RTM above. The main difference is how the resin is injected into the mold. 

RTM uses a diverging flow when injecting resin into the two mold halves. This mean the resin is injected in the center and flow out from the center to vents located on the corners or outer side of the mold. One of the biggest concerns with RTM is avoiding dry spots. LTRM solves this concern.

Light Resin Transfer Molding uses different tooling to allow the resin to be injected from an outer edge and allowed to converge unto the center of the mold. Whereas in RTM you don’t want the resin to race around the edge with LTRM it is designed to do so. This eliminates dry spots and create a higher quality mold.