| 摘要 |
PURPOSE: A manufacturing method of a connector for a drainage structure and the connector manufactured using the same are provided to reinforce the supporting force against the load applied in the connector by integrating pillars between a ceiling and a floor. CONSTITUTION: A molten resin(P') of the high temperature puts into between a blow-molding die(200). The blow-molding die is composed of a top mold(201) and a bottom mold(202). The top mold and bottom mold of the blow-molding die are pressed. A main body is made by forming a hollow portion(110) by blowing the compressed air inside the molten resin. After the main body is frozen, the top mold and bottom mold is separated.
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