RTM light is a closed mold system. We work with a heated solid under mold (gfk) and a very thin gfk upper mold.
The closing of the mold and the injection are vacuum assisted.
After applying the gelcoat we insert the fibers and close the mold.
The resin we inject using an injection pump ore suck up the resin using vacuum.
Filling of the mold with the aid of vacuum technology.
Closed mold system.
Fiber reinforcement is placed before closing the mold.
All type of reinforcements are possible.
Inserts can be integrated.
Good mechanical properties, depend of type fiber reinforcements used we can go up until 35%.
Advantages of this technique
Upper-mold in case of lite RTM is very thin and flexible, in case of infusion the upper-mold is replaced by foil;
Sandwich-construction is possible;
More parts, until 16 parts a day/shift depending of using gelcoat or not; cooling jig is necessary;
Thickness accuracy up until +/-1mm;
Thickness of the part defined by the quantity and type of fiber layers used;
This technique is perfect to use for big parts, for example boat hull.