Resin Transfer

Resin Transfer Molding (RTM and VARTM)

Resin Transfer Molding processes use closed (2-sided) molds 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 remove trapped air.

Typical Resin Transfer Molding Applications

RTM and VARTM composite applications include smaller and more complex aerospace and defense applications, enclosures, and structural components for industrial markets.

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

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