| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a synthetic resin tube superior in flexibility and having sufficient internal pressure strength. <P>SOLUTION: A reinforcing wall 3 for partitioning the inside of a tube body 2 into two independent flow passages 4 is provided in a substantially plate shape continuing along the tube axis. A reinforcing wall thickness t1/a tube body thickness t2 satisfies 0.25 to 1, and a corner part of a connecting part between a tube wall of the tube body 2 and the reinforcing wall 3 is formed in a round shape (R), and [a radius of curvature (r) of the round (R)]/[a thickness t1 of the reinforcing wall 3]=1 to 3 is satisfied. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
