In order to achieve ski production with an improved environmental balance and a closed material cycle, the ski is made from waste streams of former ski end products and the previous prepregs made from glass fiber-reinforced plastics are replaced by bio-based variants. The basis of the environmentally friendly semi-finished products is the hemp fiber-based UD-Tape Fuse HMP, which has proven itself in preliminary tests as a top layer in sandwich elements. While sandwich elements based on flax fibers are already state of the art, the hemp-based Fuse HMP UD tapes are an innovation. For the HempSki project, the Fuse HMP UD tapes were easily processed into textile reinforcement surfaces on a COP MAX 5. When using natural fiber tapes, spinning is no longer necessary and shorter and therefore more cost-effective fibers can be used in tapes with unidirectional fiber orientation while maintaining the same performance. According to Karl Mayer Technische Textilien GmbH, the fiber achieves optimum performance due to the lack of thread twisting and the resulting load-oriented alignment.
After the first skis were built in the SPURart ski manufactory, production is now being transferred to an industrial scale. A partner from the winter sports industry has already been acquired. In addition, the HempSki project will further qualify the hemp material as a fiber composite for industrial production. Intensive development work and discussions are already underway in the areas of water sports, wake and surfboards, boat building and automotive.
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