DRAIN SHEET AND WALL SURFACE STRUCTURE USING THE SAME

PROBLEM TO BE SOLVED: To provide a drain sheet that does not cause damage to a drainage function, because a back-filling material does not penetrate into the backside.SOLUTION: A drain sheet A of the present invention comprises a water conveyance part 10 for guiding water and discharging it, and an attachment part 20 for attaching the water conveyance part 10 to a wall surface. The water conveyance part 10 and the attachment part 20 are formed of an impermeable synthetic resin. The attachment part 20 has a water penetration prevention function. In addition, a bottom surface plate 11, and a large number of water conveyance ribs 12 formed by being raised from the bottom surface plate 11 are formed in the water conveyance part 10.SELECTED DRAWING: Figure 1 【課題】裏側にまで裏込め充填材が入り込まず、排水機能を損なうことのない排水シートを提供する。【解決手段】本発明の排水シートＡは、水を誘導し、排水するための導水部１０と、該導水部１０を壁面に取り付けるための取り付け部２０とよりなる排水シートＡであって、前記導水部１０及び前記取り付け部２０が不透水性の合成樹脂で形成されており、取り付け部２０に水侵入防止機能を備えている。また、導水部１０は底面板１１と該底面板１１より起立形成された多数本の導水リブ１２が形成されている。【選択図】図１