Leverkusen, Germany -- BaySystems, the global polyurethane business of Bayer MaterialScience, has highlighted its Multitec polyurethane spray system as the top solution for RLE International GmbH in its attempts to optimise its manufacturing process for wind-turbine nacelle housings.
Cologne, Germany-based RLE, a specialist in mobility and energy solutions, wanted to optimise its manufacturing process for wind turbine nacelle housings, which deaden the sound of the gear mechanism and need to have long-term resistance to weather conditions, a 13 April BMS statement said.
Using Multitec, two half-shells are manufactured first to form the nacelle, then a gel coat layer is applied before the multi-component system is sprayed directly into the open mould without adding glass fibres. More layers of Multitec are then applied using glass fibre reinforcement to add stiffness before circular inserts are placed in the moist surface, the statement said.
More foamed layers from the PU system create additional stability and act as insulating mats. "Using this integrated production method, the entire sandwich construction is also much lighter than with the conventional process, and the time needed is just a fraction of what was previously required," the statement said.
The JEC composites show is taking place in Paris from 13-15 April 2010. (RD)