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DuPont Delrin and DuPont Zytel provide stability and safety for high-tech ski-binding

Du Pont Engineering Polymers : 07 December, 2006  (Company News)
All polymer-based components of the new DIAMIR touring and freeride ski bindings, from the company Fritschi AG Swiss Bindings, are made of engineering polymers from DuPont. High requirements in terms of reliability and safety meant the Swiss manufacturer turned to a highly impact-resistant grade of DuPont Delrin acetal resin two specially modified impact-resistant and glass-reinforced grades of DuPont Zytel nylon.
According to Martin Jordi, technology manager at Fritschi: “For years we have relied upon the DuPont engineering polymers Delrin and Zytel for our bindings. When selecting the materials to be used for the manufacture of our innovative, high-tech bindings, we look to combine a high degree of safety, functionality and comfort in an attractive design and at a reduced overall weight.” Biesterfeld Plastic Suisse GmbH, DuPont’s Swiss distributor, provided support in both material selection and manufacturing optimisation.

The highly impact-resistant Delrin grade is used for those components requiring low friction. The glass-reinforced Zytel is used in the part which transmits energy from the binding to the ski, whilst the high-impact Zytel grade is used for all other polymer parts. All the materials retain their strength and impact resistance at low temperatures, a mandatory property for winter sports equipment. They also offer a high level of UV stability and weathering resistance, are scratch proof and provide a good surface finish. During use, the surface remains largely ice-free, ensuring safety even under the worst external conditions.

Thus the DIAMIR bindings meet the highest requirements in terms of quality and reliability that are placed on modern touring and freeride bindings. Extreme conditions such as increased UV exposure at high altitudes, temperatures well below freezing and varying mechanical loads during mountain ascent or descent pose no problem.

Fritschi has developed and produced high-quality binding systems for touring, freeride and alpine skiers since its founding in 1960. The new DIAMIR Freeride Plus won the European Ski Award 2006 at ISPO in spring 2006. The so-called Power Transmission Control in the binding combines a direct transmission of power and stability for excellent descent performance with a comfortable “walking” function. Energy is transmitted from the shoes to the edges of the skis: at the front of the binding through a stable mounting bracket and at the rear through the new PTC mounting plate, actively supported by a unique, free-gliding central bar system allows the ski to flex naturally so that the skis can be guided along easily and accurately. Despite its light weight, approximately 2000 grams, it offers the safety performance of a high-quality alpine binding.
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