| 摘要 |
<p>The present invention provides a water bag comprising a rectangular flat bag having a capacity of approximately ten liters and being formed into the shape of a floor cushion, such that water will not leak through a water-pouring port disposed on one of short sides even when the bag is filled with water and is laid flat. A right-side inner taper line (5), a reinforcement vertical line (6), and a reinforcement horizontal line (10) form a triangular closed area (C) measuring 41.5mm at the bottom and 80mm in height. Water or air does not enter between two plies of films in the triangular area (C) or exit therefrom, and the two plies of films are kept in close contact with each other. A similar triangular area (D) is also formed on the left side, thereby forming a horizontally symmetrical pattern. An interval part formed between outer taper lines (4, 7) and inner taper lines (5, 8) serves as a water passage. When the space in the bag is inflated by water poured through said water passage, the water passage part is compressed from the right and left sides, and the two plies of films at the water passage part are brought into close contact with each other and folded into a ridge-like shape, thereby preventing water leakage.</p> |
