| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a resin pipe 28 having a diameter different from that of a resin pipe 28 subjected to extrusion molding simply and inexpensively by a mold 14 only by attaching a diameter expanding member 16 having a simple structure to the mold 14 without replacing the mold 14. SOLUTION: In the manufacturing method of the resin pipe, the high temperature soft and deformable resin pipe 28 issued from the mold 14 is passed through the diameter expanding member 16 to be expanded in its diameter by attaching the diameter expanding member 16 including a diameter expanding part 30 having a truncated conical shape to the rear part of the mold 14 before cooled and solidified in a cooling water tank 18. COPYRIGHT: (C)2006,JPO&NCIPI |
