Patent ID: 8746494

Claim:
A synthetic resin container comprising: a bottom wall for forming a bottom portion of the container; and a body portion connecting integrally with an outer periphery of the bottom wall to define a space for filling a content therein, wherein the container transforms into a first mode in which the bottom wall projects downwards from a lower surface of the body portion, and into a second mode in which the bottom wall is inverted and folded back toward the inside of the body portion to form a raised bottom; in the first mode, the body portion has a cylindrical or elliptically cylindrical shape; an annular wall surface for pressure-contacting, which faces downward, is provided at the inside of the lower portion of the body portion; a cylindrical outer-side wall portion of the bottom wall is provided so as to extend downward from a lower edge of the body portion; a wall for forming the raised bottom of the bottom wall is provided so as to extend from a lower edge of the outer-side wall portion; the outer-side wall portion is formed so as to be able to be inverted upward with the lower edge of the body portion being a center; and in the second mode, the outer-side wall portion is inverted upward; the outer-side wall portion or a corner region of the outer-side wall portion formed by the wall for forming the raised bottom and the outer-side wall is brought into pressure contact with the wall surface for pressure-contacting to form the raised bottom; and the bottom wall has a peripheral edge portion formed in a tapered shape and sloping inward, and a liquid pool provided at the central portion and having a recessed shape.