| 摘要 |
PURPOSE:To mold the wall thickness of both ends in the flatness direction of a resin molded product thicker than that of a central section. CONSTITUTION:A device consists of an extruder 1 for extruding a parison 2, a couple of stretching components 10, 10 provided with contact faces 10a on the side of facing the parison 2 in the direction of moving close and away and stretching the contact faces in the state of bringing the contact faces 10a into contact with corresponding sections of the parison 2 to form a stretched parison 20 following the movement of coming close and away, a couple of stretching components 10, 10, first cooling means 11, 11 provided on the side of a couple of stretching components 10, 10 and movable almost integrally and cooling the contact faces 10a of the stretching component 10 out of the parison 2, a couple of second cooling means 8 disposed in the vicinity of the parison 2 and cooling a section not being in contact with the contact faces 10a of the stretching components 10 of the parison 2 at the time of separating a couple of stretching components 10, 10, molding tools 4, 4 forming a molding space and a compressed air feeding means for feeding compressed air into the stretched parison 20 stored in the molding space. |
