Flexible multilayer polyimide laminates

Abstract From the Canadian patent

Flexible multilayer laminates have at least one layer of a no longer formable, fully aromatic polyimide directly joined on one side to a layer of substrate material and, on the other side, to a layer of a heatsealable high-temperature adhesive, the high-temperature adhesive is selected from polyacrylates polysulfone, resins, epoxy resins, fluoropolymer resins silicone, resins and butyl rubbers; two basic elements of this structure may be joined to one another on the heatsealable high-temperature adhesive side; further layers may be joined; the laminates may be produced by a temperature controlled process; the substrate materials are preferably foils of metals or alloys; the multilayer …