| abstract |
(57) [Abstract] [PROBLEMS] To obtain a heat-resistant and pressure-resistant freestanding container. SOLUTION: In a hollow container made of a biaxially stretch blow-molded saturated polyester resin, which comprises a mouth, a neck, a shoulder, a body, and a bottom, the bottom has a plurality of legs radially expanded around a center of the bottom. A heat-resistant and pressure-resistant self-supporting container having a self-supporting structure in which a valley line is formed between these legs, and a specific part of the container bottom is crystallized. |