Automotive APPLICATIONS Light RTM



Light RTM


Although Light RTM is considered as a low-tech process presents some inherited difficulties in filling and curing. Synthesites has developed special sensors and systems able to help manufacturers...

In Light RTM there is a need for real-time cure monitoring so the demoulding is done as fast as possible. The use of in-mould sensors can:

  • Reduce cycle time by demoulding at the right degree-of-cure independently of the mould temperature.
  • Resin's viscosity is within limits during injection
  • Quality control of the production

In the figure below a typical continuous LightRTM serial production was recorded (electrical resistance and temperature) showing the potential of demoulding according to the measurements and not at a constant cycle time for a non-heated tool case taking advantage of the self-heating of the composite mould from the exotherm of the part. So according to the graph in just 3 cycles demoulding time decreased 35%.

Using the Optiflow system a cheaper version, with respect to Optimold. of cure monitoring is possible. With Optiflow there is a possibility to monitor 4 different moulds simultaneously and decide about the opening time based on the measured temperature.

You can watch a video from a demo of the control system on a serial LightRTM production below (©Karnic Powerboats, demonstration video created for the iREMO EC-funded project Contract Nr CP-FP 228662-2).


Synthesites involved in three papers with DLR, NLR, NCC and Bombardier
to be presented at the forthcoming SAMPE Europe Conference in Nantes in September 2019.

Synthesites to participate in new aerospace R&D H2020 project
for advanced high temperature manufacturing in aerospace

Synthesites at the 18th European Conference on Composite Materials (ECCM18)
a collaboration between Synthesites and the National Composites Centre (NCC), UK