Alternative Heating Technology for the Braiding Pultrusion Process
The braiding pultrusion process is an innovative process chain to produce fibre reinforced thermoplastic profiles with a load adaptive fibre design. At first hybrid yarns are braided on a continuously fed mandrel. After the braiding process the hybrid textiles are heated, shaped and cooled down in a hot press unit. A pultrusion process for thermoplastic composites was designed and set up. The paper describes the project results and gives an outlook on future developments. A process step which has a high effect on the possible pultrusion speed is the heating of the braid. The state of the art is an indirect heating method like the infrared heating. The approach of this paper is to heat up the profiles continuously with electrical resistance. The paper describes the design of the tool and the results of the heating experiments. The results show that an economical production is possible with 0.5 m/min with the new technology.
Authors: Jens Schäfer, Thomas Gries
Conference: CAMX 2016 – Anaheim