| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem in which a waterproof sheet used for a dwelling house, etc., is required to have not only waterproofness for suppressing water infiltration from outside and durability for enduring a long-term service, but also moisture permeability for preventing mold or corrosion inside an architectural structure and heat insulation property for energy saving, and to provide a waterproof sheet having waterproofness, durability, moisture permeability and heat insulation property.SOLUTION: A waterproof sheet includes: a porous substrate made of polypropylene; a heat ray reflection layer made of metal, laminated at least on one side of the porous substrate; and a protective layer made of polymer, laminated on the side opposite to the porous substrate of the heat ray reflection layer. The waterproof sheet has waterproofness, durability, moisture permeability and heat insulation property.</p> |
