The invention comprises a hollow pot body which is integrally formed by blow molding. The pot body at least includes an inner surface layer having a concaved containing region, an outer surface layer utilized for supporting the inner surface layer, a hollow space section clampingly disposed between the inner surface layer and the outer surface layer, a rib zone which is disposed on a wall of the inner (outer) surface layer to extend toward an interior of the hollow space section and partially adhered to an inner side of a wall of the outer (inner) surface layer, a water injection unit communicated with a top of the hollow space section, and a water permeation hole communicated between the concaved containing region of the inner surface layer and the hollow space section.本發明包括有一經由一體吹氣成型所形成中空狀的盆體,其中:盆體至少包括一具有凹陷狀容置區域的內表層、一支撐內表層用的外表層、一夾置位於內表層與外表層之間的中空狀空間區、一設置於內(外)表層壁面朝向空間區內部所延伸暨局部黏合於外(內)表層壁面內側所形成的肋區、一連通於空間區上的注水單元、以及一連通凹陷狀容置區域與中空狀空間區之間的滲水孔所組成。2...盆體20...內表層21...外表層211...外側壁面212...外底面22...空間區23...容置區域231...內側壁面232...內底面24...肋區25...內凹部251...滲水孔26...凸肋條28...導管281...補氣孔
