A preform manufacturing apparatus includes an injection molding unit, a post-cooling unit, and a taking-out unit. The post-cooling unit includes a first mold which accommodates the preform inside and which contacts the outer surface of the preform; and a second mold which is inserted into the preform and which is provided with at least a cooling rod having an internal flow path for compressed air and a tip piece which is attached to a tip side of the cooling rod. The tip piece has a shape corresponding to a bottom of the preform and includes a mold surface that receives the bottom, and an opening formed on a base end side of the mold surface and communicating with the flow path of the compressed air. The post-cooling unit cools the bottom of the preform while pressing the bottom of the preform against the first mold with the mold surface of the tip piece, and cools a body portion of the preform while pressing the body portion against the first mold with the compressed air passing through the opening.

A method for manufacturing a resin container includes: injection molding a preform made of a resin and having a body portion and a bottom portion; adjusting a temperature of the preform manufactured in the injection molding; and a blow molding step of blow-molding the preform having the adjusted temperature to manufacture a resin container. In the injection molding, the preform is injection-molded using an injection mold in which a thickness of the bottom portion is 0.7 to 0.85 relative to a thickness of the body portion. Further, in the adjusting the temperature, a coolant is introduced into the preform to cool the bottom portion of the preform.

Conditioning station tooling for adjusting a temperature of a preform. The tooling comprises a mold presenting a cavity configured to receive at least a portion of the preform. The mold is configured to receive the preform such that a gap is present between the mold and the preform. The mold includes an air inlet and an air outlet. The tooling is configured to permit air to be injected from the air inlet, through the gap between the mold and preform, and out of the air outlet. The tooling further comprises a core configured to be received within an interior of the preform and to contact an interior surface of the preform.