| 摘要 |
PURPOSE:To obtain a hollow molded article having a high bonding strength at a peripheral edge part thereof by a method wherein when a hollow molded article is formed by molding a pair of semi-hollow molded pieces and fusing their peripheral edges with a melt resin, flanges are provided or the peripheral surfaces of the bonding edge parts of said pieces and abutted on each other, and a melt resin is injected to the peripheral parts. CONSTITUTION:A mold consists of a mold 1 holding a semi-hollow molded piece A molded by primary molding with a flange part (f) on the peripheral surface of the bonding end thereof and a mold 20 holding a semi-hollow molded piece B molded by primary molding with a flange part F similarly. The molds 1 and 20 are provided with cavity members 30, 30' which car move in an axial direction. After the semi-hollow molded pieces A, B are molded, one of the molds is moved by rotating or other method. The molds 1 and 20 are clamped so that the flange parts (f), F are abutted to each other. At this time, the cavity members 30, 30' are retracted to be separated from each other to form an injection space K3 on the peripheral parts of the flange parts (f), F. The molded pieces A, B are integrally bonded by injecting a melt resin into the space K3. |
