skiing disciplines (freestyle and mogul skiing) is the preferred design. With this new material it was possible to produce ski-boots by injection molding. Patent, 23 September 2010. The use of materials, such as the ionomer blend developed by Fischer 69, which significantly softens at 80 C without degradation, helps to adapt the shape of the boot to the skiers foot. The functional parameters to be taken into account when designing a ski-boot are: - Plastic width in the different parts of cuff and shell. The rigid materials generally used in ski-boots do not have a good grip on ice and wet surfaces and therefore rubber soles are used for ski-mountaineering boots. The thermo-formability is due to the presence of semi-crystalline regions (which act as physical cross-links) that are completely melted at around 9095 C, as measured by DSC analysis ( Figure 30 ). A comparison of ground reaction forces determined by portable force-plate and pressure-insole systems in alpine skiing. Google Scholar Hoflin,.; van der Linen,. A set of 46 semispherical markers (6 mm diameter) was placed on the boot surface to define a reticular mesh of control nodes ( Figure 8 ).
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Footwear Having a Rigid Shell. Ski Boot Thermography and its Relevance. In the last few years a new type of hybrid sole ( Figure 27 right that presents a rigid part that fulfills the norm of alpine ski-boots and a soft part that provides grip on ice, has been developed. Therefore, all ski-boot producers prepare boots with different shapes and Lasts depending on their consumer target. There is no single material that completely fulfills all the characteristics reported above and that is clearly superior to the others in every aspect. The problems connected with the use of ABS plastic were partially solved in 1965 using Adiprene, a thermoplastic polyurethane manufactured by Dupont.
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