Fibre-reinforced profiles and technical winding components

Ernst Kühne Kunst­stoff­werk

Ernst Kühne Kunststoffwerk manufactures fibre-reinforced plastic profiles using the pultrusion and filament winding techniques.

Our pultruded profiles are reinforced using glass fibre, carbon fibre, aramid fibre or basalt fibre. They are impregnated with epoxy, vinylester, polyester and acrylic resins, and then gradually cured using a heated die.

We can provide a wide range of pultruded profiles as standard, including round profiles, semi-circular profiles, rectangular profiles, hollow profiles and more (see our Profile Catalog for full details). We are also experts in manufacturing complex, one-off shapes.

We can produce pultruded profiles of any length, as well as supplying weather-resistant profiles, profiles with conductive surfaces, and flame-retardant profiles. We can also deliver profiles in custom colours to suit your needs. Pultruded profiles are used in all industrial settings, including in the automotive, aerospace and defence sectors, in rail vehicles, and in wind turbines.


What is the pultrusion process?

The pultrusion process is a continuous manufacturing process for producing fibre-reinforced plastic profiles.

How was the pultrusion process developed?

In early 1954, Ernst Kühne invented the pultrusion process while working in a major electrical manufacturer’s development lab. Kühne produced his first extruded products, featuring glass rovings and impregnated with epoxy resin, himself. As well as the pultrusion technique, Ernst Kühne also invented the machinery required for the process, as well as made-to-measure dies. It was at this early stage that the electrical, chemical and mechanical parameters associated with pultrusion profiles were first determined. Kühne then went on to set up Ernst Kühne Kunststoffwerk; Europe’s first pultrusion manufacturer.

Around the same time, W.P. Goldworthy, one of the pioneers of fibre composite technology, was introducing the pultrusion process in the United States. However, his work concentrated on manufacturing profiles using polyester resin, whereas Ernst Kühne focused primarily on epoxy resin. – Cit. Wikipedia

You can find more information about the pultrusion process at:

We can manufacture pultruded glass-fibre, carbon-fibre, aramid-fibre and basalt-fibre-reinforced profiles to meet your exact specifications. We also stock a wide range of standard profiles.

We have over 5,000 tools available for WACOSIT® profiles. You can find their exact dimensions in our latest WACOSIT® Profile Catalog. As you would expect, we can also supply bespoke profiles whenever you need them, working according to your requirements and blueprints

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