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VACUUM INSULATION PANEL MANUFACTURING METHOD, AND VACUUM INSULATION PANEL

  • US 20190143450A1
  • Filed: 05/31/2017
  • Published: 05/16/2019
  • Est. Priority Date: 06/13/2016
  • Status: Active Grant
First Claim
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1. A vacuum insulation panel manufacturing method comprising:

  • a stacking step in which a first metal plate is stacked on one side of an insulating core member, 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 the backing member and the 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 for applying 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, from the evacuation port; 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 member and the sealing member, the second metal plate and the backing member are laser welded.

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