VACUUM HEAT INSULATING MATERIAL, HEAT INSULATOR, HEAT INSULATION BOX, HEAT INSULATION DOOR, STORAGE WAREHOUSE, AND REFRIGERATOR

    公开(公告)号:JP2004011705A

    公开(公告)日:2004-01-15

    申请号:JP2002163954

    申请日:2002-06-05

    Inventor: HIRAI YOSHIHIDE

    Abstract: PROBLEM TO BE SOLVED: To improve the heat insulating property of a vacuum heat insulating material using inorganic fiber assembly as a core material. SOLUTION: In the vacuum heat insulating material 1, the core material 2 made of the inorganic fiber assembly is covered with an envelope material 3 having gas barrier property, the inside of the envelope material 3 is depressed, and the opening of the envelope material 3 is thermally deposited. For the core material 2, the inorganic fiber assembly that is molded in a plate shape and cured by a binder is used, an average fiber diameter of the inorganic fiber is set between 0.1 and 10 μm, void diameter formed by the inorganic fibers is 40 μm or smaller, and the porosity of the core material 2 is 80% or more. Thus, the heat insulating performance, surface property, and rigidity can be increased, and the using condition, productivity, and handling property of the vacuum heat insulating material 1 can be extremely improved. COPYRIGHT: (C)2004,JPO

Patent Agency Ranking