| 摘要 |
PROBLEM TO BE SOLVED: To provide a food storage container which is hardly changed in the shape of a bottom part even when reversed.SOLUTION: Referring to (1) and (2) in a figure, when a food storage container 10 is reversed at a bent part 12, a portion from a point Ato a point Ais brought into a stretched state, and a force Fis applied to a portion corresponding to the outside of a bottom part 11 after the container is reversed. In addition, a portion from a point Bto a point Bis brought into a contracted state, and a force Fis applied to a portion corresponding to the inside of the bottom part 11 after the container is reversed. The thickness of the bent part 12 is set to be thinner than the thickness of the bent part of a conventional food storage container, so that the force Fapplied to the outside of the bottom part 11 and the force Fbecome weaker than forces applied to the bottom part of the conventional food storage container. Meanwhile, the thickness of the bottom part 11 is set to be similar to the thickness of the bottom part of the conventional food storage container, so that the bottom part 11 is hardly affected by a shape change when the food storage container 10 is reversed at the bent part 12.SELECTED DRAWING: Figure 5 |
