Kapton film is a brand name for Polyimide which is owned by Dupont. It is a non-thermoplastic polyimide film.
It has a dark yellow colour and has an extremely high working temperature. The temperature range it can work within is -260C to +400c. This makes the film extremely versatile.
Kapton does not have a melting point and has a low coefficient of linear expansion value. This would typically be 20 parts per mm / C. This is based on test valued of -14 to +38C.
The film is not heat seal able but can be bonded to other surfaces which have a specially prepared surface.
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