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PEN
PEN stands for polyethylene naphthalate, a form of polyester that substitutes the terephalate group for a naphthalate group. The result is a polyester that has a higher tensile strength than PET (polyethylene terephthalate) and a higher glass transition temperature (Tg) — 121°C for PEN, and 78°C for PET. The higher Tg enables PEN to offer higher dimensional stability at elevated temperatures.
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.