| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a soundproof drain pipe capable of preventing a heat shrinking film at outer periphery of a soundproof layer from shrinking by heat easily even if the soundproof drainpipe is left on a load-carrying platform of a truck and outdoors and is exposed to high temperature and allowing the soundproof layer to slide at all times to perform efficient work at site. SOLUTION: In the soundproof drain pipe 11 which has a hard resin pipe 12, the soundproof layer 13 provided around the hard resin pipe 12, and the heat shrinking film 14 provided around the soundproof layer 13 and in which the soundproof layer 13 is slidably fixed around the hard resin pipe 12 due to a heat shrinking force of the heat shrinking film 14, a heat shrinkage rate in the horizontal direction of the heat shrinking film 14 is 10 to 45%.</p> |
