Applications for PEN, its Copolyesters and Blends

End-use applications for naphthalate-based polyester resins depend on optimizing the balance of properties desired in a specific application. Usually this involves optimizing the orientation process (uni- or bi-axial) with its accompanying crystallinity development. Subsequent heat setting may be included when additional improvements in thermal stability are needed. 

Major PEN film applications include substrates for Advanced Photo System (APS) [2] film, where PEN s higher modulus permits the thinner, curl-free films required. Capacitors capable of higher temperature performance in industrial motor windings also make use of PEN s properties. 

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