| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus capable of efficiently producing a pipe body. SOLUTION: Each of molding blocks 4 is formed into an almost rectangular parallelepiped shape having a pipe body molding groove 5A which has a semicircular cross section formed to one side surface thereof. When a pair of the molding blocks 4 are assembled, both pipe body molding grooves 5A are aligned with each other to provide a cylindrical molding space 5. Further, surface area expanding parts 6 are provided to the molding blocks 4 along the length direction (the advance direction in the pipe body producing apparatus) thereof so as to be formed into a cylindrical shape piercing the front and rear surfaces of the blocks 4 and become easy to diffuse the heat received from a molten resin when the molding blocks 4 moves on an endless track.
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