Foils for building and construction

Polyvinylchloride (PVC) foil has a low strength and creep behaviour and is therefore used only in indoor applications for illuminated ceilings or walls. It has very good printing properties. 

High stretch PET foils are made by stretching the usual polyester materials. This process delivers lightweight foils with the excellent environmental stability of polyester and a high tensile strength, but they are not long-term UV-stable and must therefore be coated. 

THV (tetrafluoroethylene-hexafluoropropylene-vinylidenefluoride copolymer) foil has very high transparency and elasticity, but low strength, so it is mostly used as a covering for load-carrying nets. As a fluoropolymer, THV foil may be welded and is non-combustible and not susceptible to contamination, nor is it affected by UV radiation or chemicals. 

PTFE terpolymer is a liquid amorphous fluoric polymer system, which hardens to a completely transparent layer at room temperature. There is 

Polycarbonate (PC) foil is used for illumination in ceilings or walls. The thermoplastic PC has a transparency like that of glass, may be coloured and welded, is dimensionally stable, has a high impact resistance and may also be used for indoor sound-damping by making perforations in the foil. Like ETFE, polycarbonate is also flame retardant. 

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