Wärme- und druckbeständiger Behälter

摘要

A self-sustaining container made of a saturated polyester resin, formed by biaxial stretch blow molding and comprising a mouth and cervical portion, a shoulder, a body and a bottom, wherein said bottom has a self-sustaining structure with a plurality of legs radially bulged around the center of the bottom and valley lines formed between the adjacent legs, and the following portions (A) to (E) are low stretched portions and at least portions (B) and (C) among the following portions (A) to (E) are crystallized portions: (A) center (3) of the bottom (B) peripheral portion (4) of the center of the bottom (C) portion (6A) of each valley line close to the center of the bottom (D) portion (7) of each leg from the edge of the peripheral portion of the center of the bottom to a ground contact portion (E) portion (17) between said portions (C) and (D).