Composiflex: Advanced Composite Products
Celebrating 30 Years 1986 - 2015

Resin Transfer process

Process Description

Resin Transfer Uses closed (2-sided) mold and low pressure to force external resin to enter the mold and flow through the layup. Vacuum can be used to assist RTM and in specialized processes like Vacuum Assisted Resin Transfer Molding (VARTM). External vacuum can enhance resin flow through the layup to help speed up the process and removes trapped air.

Typical Applications

Smaller and more complex aerospace applications, structural components for industrial and transportation markets, enclosures.

Resin Transfer Advantages

  • High quality surface finish on both part sides
  • Repeatable fiber volume fraction and dimensional tolerances
  • Eliminates vacuum bagging step needed for Resin Infusion

Resin Transfer Disadvantages

  • Some process development required to produce repeatable quality
  • Higher tooling costs than resin infusion