| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a watering tube enabling stable supply of liquid through a water-supply hole of a branch pipe without causing crush of the water-supply path of the branch pipe even when the internal pressure in a main pipe increases due to the liquid flowing through the inside of the main pipe. <P>SOLUTION: The watering tube 100 includes: a main pipe 10; and a branch pipe 20 mounted around the outer periphery of the main pipe 10 and having a water-supply hole 22. The branch pipe 20 comprises a branch pipe film material 20a bonded around the outer periphery of the main pipe 10. The water-supply path 23 is formed between the outer peripheral surface of the main pipe 10 and the branch film material 20a. A communicating hole 13 is formed at a part of the main pipe 10 which is covered with the branch pipe film material 20a. Regarding the part of the branch film material 20a corresponding to at least the water-supply path 23, the circumferential length of the branch pipe film material 20a is longer than that of the main pipe 10 at the part covered with the branch pipe film material 20a. <P>COPYRIGHT: (C)2012,JPO&INPIT |
