UPILEX®-VT and UPILEX®-NVT are heat bonding polyimide films having heat fusing layers on both side of the film, created by the polyimide resin equivalent of UPILEX®-S. High quality flexible circuits without an adhesive layer are obtained, by heating and pressing UPILEX®-VT or UPILEX®-NVT with metal (Cu, SUS, Al) foil. In addition, they are also available for bonding films comprised of metal, ceramic and other materials. Flexible circuits without adhesive are produced. This offers high tensile strength and tear strength. Offering the same low water absorption, low dimensional change and high heat resistance as UPILEX®-S, with the addition of laminate workability in the heat press.Information provided by UBE Industries, LTD |