Nippon Steel Nisshin Co., Ltd.

Nisshin Steel Co., Ltd.

Nippon Steel Corporation

Hirohisa Mishima

Takefumi Nakako

Tsutomu Azuma

A vacuum insulation panel manufacturing method that makes it possible to manufacture low-cost, high-performance vacuum insulation panels, and a vacuum insulation panel are provided. This method of manufacturing a vacuum insulation panel () involves: a stacking step in which a first metal plate () is stacked on one side of an insulating core material (), and in which a backing member () having an opening () and a second metal plate () having an evacuation port () are stacked, with the opening () and the evacuation port () stacking, on the other surface of the core member () in the order of backing member () and second metal plate () from the core member () side; a first welding step for welding outwards of where the core member () is arranged in the first metal plate () and the second metal plate (); an evacuating step from the evacuation port () to create a vacuum in an inner area which is held between the first metal plate () and the second metal plate () and in which the core member () is arranged; and a laser welding step in which, in a state in which the inner area is made into a vacuum by the evacuating step, the evacuation port () is sealed by means of a sealing material () and the sealing material (), the second metal plate () and the backing member () are laser welded.

Vacuum insulation panel manufacturing method, and vacuum insulation panel

A vacuum insulation panel manufacturing method that makes it possible to manufacture low-cost, high-performance vacuum insulation panels, and a vacuum insulation panel are provided. This method of manufacturing a vacuum insulation panel involves: a stacking step in which a first metal plate is stacked on one side of an insulating core material, and in which a backing member having an opening and a second metal plate having an evacuation port are stacked, with the opening and the evacuation port stacking, on the other surface of the core member in the order of backing member and second metal plate from the core member side; a first welding step for welding outwards of where the core member is arranged in the first metal plate and the second metal plate; an evacuating step from the evacuation port to create a vacuum in an inner area which is held between the first metal plate and the second metal plate and in which the core member is arranged; and a laser welding step in which, in a state in which the inner area is made into a vacuum by the evacuating step, the evacuation port is sealed by means of a sealing material and the sealing material, the second metal plate and the backing member are laser welded.

A vacuum insulation panel manufacturing method that makes it possible to manufacture low-cost, high-performance vacuum insulation panels, and a vacuum insulation panel are provided. This method of manufacturing a vacuum insulation panel () involves: a stacking step in which a first metal plate () is overlaid on one side of a thermally insulating core material (), and in which a backing member () having an opening () and a second metal plate () having an exhaust port () are placed, with the opening () and the exhaust port () overlapping, overlaid on each other on the other surface of the core member () in the order of backing member () and second metal plate () from the core member () side; a first welding step for welding outwards of where the core member () is disposed in the first metal plate () and the second metal plate (); a vacuum creating step for evacuating air from the exhaust pert () to create a vacuum in an inner area which is held between the first metal plate () and the second metal plate () and in which the core member () is arranged; and a laser welding step in which, in a state in which the inner area is made into a vacuum by the vacuum creating step, the exhaust port () is sealed by means of a sealing material () and the sealing material (), the second metal plate () and the backing member () are laser welded.

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Tokyo, Japan

Hirohisa Mishima