BEAM WELDING METHOD, VACUUM PACKAGING METHOD, AND VACUUM HEAT-INSULATION MATERIAL PRODUCED BY VACUUM PACKAGING METHOD

WIPO Patent Application WO/2011/145481

A1

The disclosed beam welding method involves: a metal-foil layering step of mounting a first metal foil and a second metal foil placed on the first metal foil on both a primary mounting surface and a secondary mounting surface of a support mount which are located adjacent to one another; a tight contact step of bringing the portions of the first and second metal foils mounted on the primary mounting surface into tight contact with one another along an imaginary welding line, with the portions of the first and second metal foils mounted on the secondary mounting surface being kept in a free state; and a welding-and-cutting step of cutting off the portions of the first and second metal foils mounted on the secondary mounting surface while welding together the portions of the first and second metal foils mounted on the primary mounting surface along the imaginary welding line by heating the first and second metal foils through convergent irradiation with an electron beam in a predetermined vacuum environment after the tight contact step.

SHINOKI TOSHIO (JP)
SEKINE KATSUNORI (JP)
YATO MASAKI (JP)
HANAI MASAHIRO (JP)

PCT/JP2011/060767

November 24, 2011

May 10, 2011

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MITSUBISHI ELECTRIC CORP (JP)
SHINOKI TOSHIO (JP)
SEKINE KATSUNORI (JP)
YATO MASAKI (JP)
HANAI MASAHIRO (JP)

B23K15/00; B23K15/08; B23K26/10; B23K26/20; B23K26/38; F16L59/06

JPS6448690A	1989-02-23
JPH0360886A	1991-03-15
JPH03106576A	1991-05-07
JPH04298244A	1992-10-22
JPH0929466A	1997-02-04
JPH0985478A	1997-03-31
JPH0989480A	1997-04-04
JPH09220639A	1997-08-26
JP2005118849A	2005-05-12

SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)

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