| 摘要 |
PROBLEM TO BE SOLVED: To make a fitting operation performable without troubles for a container with partial rising at the fitting operation prevented and to prevent soup from leaking toward the outside after succulent dishes and the like are packed by a method wherein fitting protuberances each in a shape of surrounding annulation formed respectively at a main body and a lid body both of which are molded out of synthetic resin sheets are fitted together. SOLUTION: Fitting protuberances 11a and 11b are constructed respectively of upper and lower protuberant parts 14 and 13, and the upper and lower protuberant parts 14 and 13 are formed respectively in a circular arc-shaped cross section. The external face of the upper protuberant part 14 is completely fitted to the internal face of the lower protuberant part 13 with an area sufficiently secured for keeping liquid-tightness. Since the cross sections of the upper and lower protuberant parts 14 and 13 constituting the fitting protuberances 11a and 11b are formed respectively in the circular arc shape, an operation for fitting those members together can be made easily, securing tightness in sealing for preventing leakage of liquid. On performing the fitting operation for the fitting protuberances 11a and 11b, an air inside a container main body 10A can be effectively exhausted to the outside.
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