 Using fiber patch placement, Cevotec is reducing the fiber content, manufacturing time and cost of composite pressure tanks by 20 %. So far, hydrogen tanks designed for a working pressure of up to 700 bar and  1 kg hydrogen storage require about 10 kg of carbon fiber. The solution presented here is still based on wrapping a cylindrical core with continuous fibers. The weak point of established winding processes, however, is that the filament deposition at the domes creates superfluous material. The new solution is to apply carbon fiber patches of the same material to the dome areas prior to the winding process in such a way that they cover exactly those areas that cause problems during winding. In a first process step, the couplings of the tank core are reinforced with patches. The tank cores reinforced in this way are then fed into the shortened winding process, which requires less material and production time to cover the coupling areas. |© Cevotec