| 摘要 |
PROBLEM TO BE SOLVED: To provide a cup-shaped container having excellent drop strength and buckling strength while securing R of a corner part in which a body part and a bottom part of a container cross to be large.SOLUTION: A cup-shaped container is formed in external R1 with a curvature radius R1 having the center outside the container such that a diameter of the side wall of the container is reduced along a leg part from a flange part, and a bottom part corner part crossing the side wall is formed in internal R2 with a curvature radius R2 having the center inside the container continuously to the external R1, and the bottom wall of a bottom part is formed in external R3 with a curvature radius R3 having the center outside the container continuously to the internal R2. Because a load imposed on the container can be absorbed or relaxed by the external R1 and the internal R2, the bottom part bottom wall can be flattened without forming the external R3 in the bottom wall of the bottom part 2. |
