| 摘要 |
PROBLEM TO BE SOLVED: To provide a porous pipe through which a suitable amount of water permeates for watering irrigation, having good formability, and provided with flexibility and strength required when laid. SOLUTION: The porous pipe is obtained by kneading at least either of rubber or a plastic pulverized product and a plurality of polyolefin resins combined so that a weighted average value of the melt flow rate thereof is 0.5-0.9 g/10 min, and subjecting the kneaded mixture to extrusion molding. In the pipe, the polyolefin resin preferably comprises two kinds of mixture of straight-chain low-density polyethylene having the melt flow rate of 1.0-1.6g/10 min, and high-density polyethylene having the melt flow rate of 0.05-0.16 g/10 min, the diameter of the pulverized product is 0.8-1.2 mm, and the plastic pulverized product preferably comprises polyurethane. COPYRIGHT: (C)2004,JPO |
