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Foil constructions fit for the highest mountains
Dyneon Fluoropolymer material for architectural applications remains durable even under extreme conditions(PresseBox) ( Neuss, )
The Gaislachkogl cable car opened in 2010 and serves one of the most popular winter sports areas in the Austrian region of Sölden. The first section carries up to 3,600 passengers an hour from the valley station, 1,363 metres above sea level, to the middle station, located at 2,174 metres above sea level. This section is the highest-capacity single cable gondola in the world. The highest three-cable gondola in the world climbs onwards and upwards from the middle station to an altitude of 3,040 metres. The cars roll on two cables and the third cable pulls the large cars in a more energy-efficient manner than other designs.
First time to use foil architecture high up in the mountains
The stations were designed by Johann Obermoser Architects, an Innsbruck-based architecture firm. They are sculpted and deliver maximum transparency. In addition, foil architecture has been used high up in mountains for the first time. Texlon, a Swiss specialist in hangar, foil and membrane construction, implemented the design. The company operates in Europe and Central Asia and has already built numerous foil roofs. "We designed the cover of the mountain station for wind loads of up to 300 kilometres per hour," says Adrian Imfeld, Marketing Director at Texlon. Using glass was not feasible for technical reasons.
Material with high requirements
The prerequisite is the extremely high tear-resistance of the Nowoflon® ET 6235Z foils extruded by Nowofol Kunststoffprodukte GmbH & Co. KG, based in Siegsdorf, Germany. Depending on the application, the foils reach thicknesses between 12 - 250 μm. A human hair is 70 μm thick by comparison. Nowofol manufactures both transparent and coloured foils.
The company also uses ETFE from Dyneon GmbH as a raw material. This high-performance material is non-flammable, resistant to UV exposure and provides near-universal chemical resistance. The latter is particularly important as direct UV radiation is up to 60 per cent higher in the mountains than in lowlands. In addition, snow and ice reflect 90 per cent of the UV rays. Such high levels of UV radiation age traditional plastics quickly. 3MTM DyneonTM ETFE belongs to the fluoropolymer group meaning it is not affected in this way. And there are more advantages. Thanks to the specific properties of the 3M Dyneon ETFE high-performance polymer, the Nowoflon® ET 6235Z foils have a low-energy surface that does not allow snow to gather and a normal rain shower cleans the foils. This significantly lowers maintenance costs.
More and more architects all over the world are turning to light foil constructions to develop their own designs and environmentally efficient building practices. Texlon made the foils at the Gaislachkogl cable car with just a single layer as the stations will not be heated. In contrast, multi-layer foil cushions are normally used for closed buildings as they have very good heat insulation properties.
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