A method of welding an ultra-thin foil to the edge of a thicker sheet to form a vacuum insulation panel comprising the steps of providing an ultra-thin foil having a thickness less than 0.002, providing a top plate having an edge and a bottom plate having an edge, clamping the foil to the edge of the...http://www.google.fr/patents/US5500503?utm_source=gb-gplus-shareBrevet US5500503 - Simultaneous laser cutting and welding of metal foil to edge of a plate
Simultaneous laser cutting and welding of metal foil to edge of a plate
