Material Aluminium foil Copper foil Tin Clad Copper Foil Acetate silk cloth Creped paper Glass Cloth Kraft paper Nomex Mica paper Nomex Polyamide Paper Polyester Film Polyethylene Naphthalate Film (PEN) Polyimide Film Polypropylene Film Shrinkable Polyester Film Teflon™ PTFE Coated Glass Cloth Teflon™ PTFE Film