A blow molding mold which can reduce the production cost and can easily perform replacement work. The blow molding mold includes a body mold, a bottom mold and a neck mold. The neck mold is provided with a first cooling mechanism. The body mold includes an inner body mold corresponding to the outer surface of a body portion of a plastic bottle, and an outer shell located outside the inner body mold. The inner body mold can be attached/detached to/from the outer shell when replacing the inner body mold in conformity with the shape of the plastic bottle.

A plastic container having a sidewall defining a chamber and having a first end and a second end and an opening at the first end into the chamber. A base of the container extends from the sidewall and closes the second end, the base having an outer perimeter portion defining a support structure, an axially inwardly extending perimeter wall spaced radially inwardly from the support structure forming an angle with a horizontal line of greater than about 80, a centrally disposed pushup section in the shape of an axially inwardly extending truncated cone, and a toroidal-shaped channel circumscribing and connecting the perimeter wall to the pushup section. The toroidal-shaped channel has a surface that is asymmetrical about a central axis of the container when the container is under static pressure conditions.

The invention relates to a blow mold (100) comprising a mold base (101) having a cavity (102) as the mold cavity, the cavity (102) having a bottom region (1), a center region (2) and a top region (3). When the blow mold (100) is closed, the center region (2) can be moved relative to the top region (1) and/or relative to the bottom region (3).

A blow molding mold in which a holding mechanism is independently provided to a bottom mold and is configured to be capable of gripping a protruding portion provided to a bottom portion of a preform independently of a gate portion, and a rotation mechanism is configured to be capable of rotating the bottom mold, relative to a neck portion of the preform which is in a stationary state held by neck molds, in a state where the protruding portion is gripped by the holding mechanism.

A preform is heated, the heated preform is sealed in a sealing apparatus including a neck portion mold, a trunk portion mold and a bottom portion mold at a predetermined temperature range, and the heated preform sealed in the molds is blow-molded into a bottle. Any molded bottle is removed if the mold surface temperature of the neck portion mold, the trunk portion mold and the bottom portion mold are outside of the predetermined temperature range. A sterilizer is blasted to any molded bottle not removed when the mold surface temperature of all of the molds is in the predetermined temperature range.