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5.1 ETFE Architectural Membranes

ETFE - Ethylene Tetrafluoroethylene

ETFE foil is a fluorocarbon-based polymer, which is a type of plastic. The benefits of ETFE make the foil increasingly popular as a construction material. Foil thickness ranges from 50 to 300 µm, depending on structural need. ETFE is recyclable, ultra-lightweight, has a full range of translucency (clear to opaque), can be screen printed and has a self cleaning, non-stick surface. Additionally, ETFE exhibits a high-energy radiation resistance, yet allows UV-transmittance, making it suitable for swimming facilities and interior green spaces. ETFE withstands high temperatures for extended periods of time and is flame resistant. As ETFE has good impingement resistance, it is suitable for roofs and facades. In explosive blasts, the material evaporates and does not melt, making it more suitable overhead than glass in security applications such as transit terminals. ETFE is more durable than PVC, lasting 25 to 35 years.

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