When it is applied perpendicular to the fastener surface, Metaklett can still withstand a force of seven tonnes per square meter. The TUM boffins felt that this should be rectified - hence Metaklett: Velcro made out of spring steel.Īccording to the TUM: Temperatures in excess of 800☌ and aggressive chemical solutions do not pose any problem for Metaklett, which also offers adhesive strength of up to 35 tonnes per square meter when tensile force is applied parallel to the fastener surface. Nor can it resist high temperatures, meaning that it can't be employed in assembling cars. etc.īut synthetic Velcro isn't strong enough to use in applications such as hanging facades on buildings. As a result, conventional Velcro fasteners are used in shoes, medical bandages, cable ties etc. “The unbeatable advantage of a hook and loop fastener is that it is easy to close and open again,” says Josef Mair, a boffin from the Technische Universitaet Muenchen (TUM).
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