| 摘要 |
<p>A plastic container is made by separately molding of thermoplastic resin material at least two divided portions of the container, each molded portion being provided with a dividing end face and a cutout extending along the dividing end face. The molded portions are then held in a position of desired assembled relationship to provide a key-shaped jointing groove including the cutouts extending between the opposed dividing end faces and having an opening extending around the whole periphery of the container. The key-shaped jointing groove is filled by injecting through the opening a thermoplastic resin material which is heated to such a temperature that the thermoplastic resin material is in plastic form and heats, melts and fuses the thermoplastic resin material of the divided portions at the surfaces of the jointing groove which are contacted by the molten thermoplastic resin material. The thermoplastic resin material in the groove and fused thereby is cooled to effect hardening and to unite the molded portions into one body.</p> |
