| 摘要 |
PURPOSE:To secure excellent bonding strength by a method in which an unvulcanized rubber tape is interposed by using nonbonded portion to perform a double water-proofing construction consisting of the water-proof treatment of the unvulcanized rubber tape and the water-proof treatment of an upper layer rubber sheet. CONSTITUTION:In a water-proof sheet 10, a nonbonded width(l) is formed on one or both ends, and in a rubber sheet 2, a nonbonded end 2a is formed. In the nonbonded width(l) of the end portion of at least one sheet 10, a nonbonded expanded plastic width(l2) is left and the width(l1) portion is cut off. The adjacent water-proof sheet 10 is butted with the cut end and unvulcanized rubber tape 3 is bonded and connected from the remaining nonbonded face 1a of the expanded plastics 1 to the rubber sheet of the adjacent water-proof sheet 10. The expanded plastic 1 for the width(l1) from above is cut off and covered with the end rubber sheet 2a of the excess length for bonding. Water-proofing effect can thus be more enhanced. |
