| 摘要 |
PURPOSE: An apparatus for forming a corrugated plastic pipe with a composite section structure is provided to perform molding and cooling since corrugated profiles are guided by a cooling pipe. CONSTITUTION: An apparatus for forming a corrugated plastic pipe with a composite section structure comprises main and auxiliary extruders(100,200), a pipe molding unit(400), a cooler(250), an outer layer extruder(300), and a pressing roller. The main extruder fuses rigid resin and extrudes the corrugated profile. The winder of the pipe molding unit wins up corrugated profiles into a spiral shape. The resin pipe has groove portions protruded portions on the outer surface thereof. The auxiliary extruder fuses the soft resin and extrudes a reinforcing profile. The auxiliary extruder supplies the reinforcing profile to the pipe molding unit. The cooler cools the reinforcing profile through a water cooling method or an air-cooling method.
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