| 摘要 |
PROBLEM TO BE SOLVED: To provide a watering tube having no joints such as heat-sealed parts, causing no breakage on a water-discharge port, and also reducing stress applied to a bending part when making the tube flat to prevent deterioration of the bending part so as to keep excellent mechanical strength for a long period of time. SOLUTION: The watering tube comprises a watering tube made of a polyethylene resin which has no joints in its peripheral direction, through which a water discharge holes 4 are penetrated for discharging water; wherein the polyethylene resin comprises intermediate-density polyethylene having a prescribed density and a prescribed melt mass flow rate, and linear low-density polyethylene, and is flatly folded at a pair of bending parts 1, 1, while projecting parts 2, 2 are formed at the inner peripheral surface of the adjacent parts of the bending parts 1, 1 so that a space 3 is formed between the projecting part 2 and the bending part 1 with the projection part 2 in a flat state. COPYRIGHT: (C)2008,JPO&INPIT
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