ETFE

Ethylene tetrafluoroethylene, colloquially known by its abbreviation ETFE, is a fluorocarbon-based polymer (a fluoropolymer): a kind of plastic. Trade name "Tefzel". It was designed to have high corrosion resistance and strength over a wide temperature range. In addition it has a high melting temperature and does not emit toxic fumes when ignited.





Compared to glass, ETFE film is 1% the weight, transmits more light and costs 24% to 70% less to install. It's also resilient (able to bear 400 times its own weight, self-cleaning (due to its nonstick surface) and recyclable. On the other hand it is prone to punctures by sharp edges, therefore it is mostly used for roofs.[1] In sheet form as commonly employed for architecture, it is able to stretch to three times its length without loss of elasticity. Employing heat welding, tears can be repaired with a patch or multiple sheets assembled into larger panels.


Source: www.wikipedia.com