| abstract |
The present invention provides a hollow molded body (1) which is a hollow molded body (1) obtained by laser welding a container (2) and a lid (3) for sealing the container (2), the container (2) and the lid (3) is an injection-molded body containing a forming material of a thermoplastic resin, and has gate marks (2x) and (3x) respectively during injection molding, and the thermoplastic resin is oriented and solidified along the flow direction of the molten state. In nature, all of the gate marks (2x) of the above-mentioned container (2) are located on the outer surface or the bottom surface of the above-mentioned container, but are located except from the center of gravity of the bottom surface of the above-mentioned container (2) to the outer periphery of the above-mentioned bottom surface. The distance is based on the distance, and the distance from the center of gravity is within two-thirds of the distance, and all the gate marks (3x) of the cover (3) are located on the upper surface, side surface or lower surface of the cover. Except for the area from the center of gravity of each surface that is within two-thirds of the distance from the center of gravity of each surface based on the center of gravity of the upper surface and the lower surface of the cover (3) and the distance from the center of gravity of each surface to the outer periphery Location. |