| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum heat insulation body capable of obtaining excellent heat insulation performance by reducing influences of a heat conduction quantity and heat transmission due to radiation.SOLUTION: A vacuum heat insulation material 1 according to the present invention is constituted by wrapping a core material 2 made by laminating a glass wool sheet 3 and a radiation shield member 4 with an external coating material 5 blocking permeation of gas and steam, and sealing them after an internal pressure of the external coating material 5 is reduced. In this case, the glass wool sheet 3 and the radiation shield member 4 are laminated, and therefore, heat radiation inside the external coating material 5 is shielded by the radiation shield member 4 while the original heat insulation performance obtained by reduced-pressure sealing of the glass wool sheet 3 is maintained, so that influences of a heat conduction quantity due to radiation can be reduced. |
