WATER PROOF SHEET, WATER PROOF MEMBER USING IT, WATER PROOF STRUCTURE, METHOD FOR WATER PROOFING, AND METHOD FOR MANUFACTURING WATER PROOF SHEET

摘要

PROBLEM TO BE SOLVED: To provide a water proof sheet which can maintain sufficient water proof for a long term by preventing a plasticizer component in a reverse surface layer from transferring to a surface layer side and to provide a water proof member using it, a water proof structure, a method for water proofing and a method for manufacturing a water proof sheet.;SOLUTION: A water proof sheet has an intermediate layer 4 between a right surface layer 2 and a reverse surface layer 3 each made of polyvinylchloride. The intermediate layer 4 is composed of an unwoven fabric of a polyester fiber. The right surface portion and the reverse surface portion of the intermediate layer 4 are impregnated with a paste sol of polyvinylchloride resin to form a right surface adhesive layer 20 and a reverse surface adhesive layer 30. The right surface layer 2 and the reverse surface adhesive layer 30 and further the right surface adhesive layer 20 and the reverse adhesive layer 30 are melt and integrated to be formed into one body. A shield layer 41 not impregnated with the resin is disposed inside the intermediate layer 4 to prevent the transfer of a plasticizer.;COPYRIGHT: (C)2002,JPO