For stabilization and optimized handling, all membranes types (e.g. PTFE or Tracketch) can be laminated with different types of non-woven fibers. The heat lamination does not require glue when the fibers are made from poly propylene or PET. The composite material then has a total thickness of 100 µm to 500 µm and can be processed optimally in e.g. automated cutting and welding equipment.