Metal foil tube and method and apparatus for production thereof
OwnerKoki Inada, Kazutoshi Iwami +5inventors
InventorsKoki Inada, Kazutoshi Iwami, Atsuhiko Imai, Hiroki Kobayashi, Yasuo Takahashi, Mukio Yamanaka, Tohru Saito
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Abstract
The present invention provides a metal foil tube with a thickness of 10 to 100 μm and a method and apparatus of production of the metal foil tube enabling even an extremely thin metal foil to be reliably finished into a tube, that is, a metal foil tube comprised of a metal foil sheet W with a thickness t of 10 to 100 μm joined by welding, the method of production of the metal foil tube shaping the metal foil sheet W to form an overlap part G, then welding the facing sides and finishing the weld zone part flat.
Claims68
1-76. (canceled)
A metal foil tube characterized by joining or welding a metal foil with a thickness of 10 to 100 μm comprised of Fe, Cr, Ni, Co, Mo, Be, Cu, Ti, Nb, Zr, Ta, or an alloy of the same.
A method of production of a metal foil tube characterized by comprising a shaping step of shaping a metal foil sheet with a thickness of 10 to 100 μm so that its facing sides overlap and a welding step of welding the overlapped facing sides.
A method of production of a metal foil tube as set forth in claim 117, characterized in that said stationary electrode member is formed so that part or all of the outside surface is flat.
A production apparatus of a metal foil tube, characterized by having a shaping unit for shaping a 10 to 1.00 μm thick metal foil sheet to a predetermined shape and a welding unit for welding facing sides of said metal foil sheet.
Dependencies are inferred from the claim text.