| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat insulation sheet which is manufactured at low costs and enables improvement of adiabaticity.SOLUTION: A heat insulation sheet 100 includes: aluminum sheets 110 having an aluminum film; cotton sheets 130, each of which is provided between the aluminum sheets 110 and has a cotton-like form. A porous material sheet 120 is provided between at least one of the aluminum sheets 110 and the cotton sheet 130. Holes which allow a far infrared ray to pass therethrough and prevent water droplets from entering thereinto are formed in the aluminum sheets 110.SELECTED DRAWING: Figure 1 |
