Exel Carbon Pultrusion

Exel Composites has more than 50 years' experience in the composites industry. Over that time we have designed and manufactured high performance carbon fibre profiles for demanding applications in a wide range of market sectors. Our production capabilities ensure the high speed pultrusion of parts with superior quality and the most efficient use of material, helping to make carbon fibre profiles more cost effective than ever before.

Wind turbine blade spar caps

Exel has supplied tailored composite solutions to wind turbine manufacturers for more than 20 years. Our products enable lighter and longer rotor blades and faster manufacturing processes, helping to improve turbine performance and lower costs.
The ongoing trend towards longer rotor blades is leading to increasing use of carbon fibre in the blade spar caps. These critical structures are an ideal application for pultrusion. Pultruded spar caps, delivered prefabricated and ready to install in the blade, offer reduced production time and cost, as well as higher quality parts with the best mechanical properties.
As a global leader in the pultrusion industry, Exel Composites is your ideal partner for the development of carbon fibre spar caps.

Pultrusion process

Pultrusion is the most efficient and cost-effective continuous manufacturing process for composite profiles. In pultrusion process the fibers are impregnated with a thermosetting resin and pulled through a heated die where curing takes place. Different laminate lay-ups are possible with reinforcements of mats, fabrics and multiaxials. The finished profiles are cut to length by a saw at the end of the line.

Pultrusion provides the best mechanical properties

• Accurate fiber alignment
• No wrinkles – excellent surface
• Fast production due reduced mold time
• High, consistent quality
• High strength, high fatique strength,
low weight

Exel Oyj, Vantaa head office, Mäkituvantie 5, FI-01510 Vantaa, Finland, Tel +358 20 7541 200, Fax +358 20 7541 201