CORE FOR VACUUM INSULATION PANEL WITH EXCELLENT HEAT INSULATION PROPERTY

摘要

PURPOSE: A core structure for vacuum insulation with an excellent thermal insulation capability and a vacuum adiabatic panel using the same are provided to improve thermal insulation by laminating three or more inorganic fiber sheets with density difference. CONSTITUTION: A core structure for vacuum insulation comprises high and low density inorganic fiber sheets. The high intensity inorganic fiber sheets have volumetric density of 100 kg/m3 or more and 300 kg/m3 or less at the atmospheric pressure. The low density inorganic fiber sheets have volumetric density of 1kg/m3 or more and 100kg/m3 or less at the atmospheric pressure. The high and low density inorganic fiber sheets are alternately laminated in three or more layers. The volume density difference between the high and low density inorganic fiber sheets is 50kg/m3 or more and 200 kg/m3 or less. The total number of high and low density inorganic fiber sheets is odd. The high intensity inorganic fiber sheets are arranged in the outermost side. [Reference numerals] (AA) High density; (BB) Low density