Sandwich panels and methods of making them, i.e., laminates which comprise two metal sheets with a filled resin core between a bonded metal sheets, which are useful for structural and other uses wherein the laminates utilize combinations of metal skins, metal surface preparation, resins, fillers, and...http://www.google.fr/patents/US5219629?utm_source=gb-gplus-shareBrevet US5219629 - Laminates, panels and methods for making them
