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Title:
BEAM WELDING METHOD, VACUUM PACKAGING METHOD, VACUUM INSULATING MATERIAL PRODUCED BY THE VACUUM PACKAGING METHOD, AND HEATING COOKER USING THE VACUUM INSULATING MATERIAL
Document Type and Number:
Japanese Patent JP2013107084
Kind Code:
A
Abstract:

To provide: a beam welding method by which metal foils can be welded more easily and reliably; a vacuum packaging method; a vacuum insulating material produced by the vacuum packaging method; and a heating cooker using the vacuum insulating material.

A beam welding method includes: a metal foil-laminating step of putting a first metal foil and a second metal foil placed on top of the first metal foil, on each of a main-placing surface of a supporting pedestal and a sub-placing surface thereof, both surfaces being adjacent to each other; an adhesion step of causing portions of the first and second metal foils put on the main-placing surface to adhere to each other along an assumed welding line, in a state that portions of the first and second metal foils put on the sub-placing surface are released; and a welding and cutting step of cutting the portions of the first and second metal foils put on the sub-placing surface while welding the portions of the first and second metal foils put on the main-placing surface along the assumed welding line, by heating the first and second metal foils through a concentration irradiation of electron beam under a specified vacuum environment after conducting the adhesion step.


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Inventors:
SHINOKI TOSHIO
SEKINE KATSUTEN
Application Number:
JP2011251662A
Publication Date:
June 06, 2013
Filing Date:
November 17, 2011
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B23K15/00; A47J27/00; B23K15/06; B23K26/21; B23K26/38; B65D81/20; B65D81/38; F16L59/06
Domestic Patent References:
JP5377763B22013-12-25
JP2006288918A2006-10-26
JP2006125598A2006-05-18
JP2010267422A2010-11-25
JPH03106576A1991-05-07
JPH0985478A1997-03-31
JPS4983643A1974-08-12
JPH04298244A1992-10-22
JPH05309484A1993-11-22
JPH10244387A1998-09-14
JP2005114015A2005-04-28
JP2008045580A2008-02-28
JPH0360886A1991-03-15
JPH09220639A1997-08-26
JPS61123487A1986-06-11
Foreign References:
US5502292A1996-03-26
US5500503A1996-03-19
Attorney, Agent or Firm:
Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka



 
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