An apparatus (1) for handling and cooling plastic preforms comprising a rotatable handling station (2), provided with a plurality of retaining and cooling pins (3) for preforms and adapted to cooperate with an extraction plate (4) adapted to extract the preforms from an injection mold; an aeraulic circuit (5) connected to said station and comprising an aspiration duct (6) for aspirating air from the inside of the station; a delivery duct (7) for sending air to said station; cooling means (8) arranged along the delivery duct for cooling the air sent to said station; aspiration means (9, 19, 29) connected at least to the aspiration duct and to the delivery duct, and wherein switching means are further provided, to pass from a first circuit configuration, in which there is an air passage from the delivery duct to the inside of the station, to a second circuit configuration in which there is an air passage from the inside of the station to the aspiration duct, whereby, in the first configuration, air is blown by means of the plurality of pins, while, in the second configuration, air is aspirated by means of said plurality of pins.

There is provided a cooling mold unit for cooling a preform that has been injection-molded, the preform having a bottomed shape and made of a resin, the cooling mold unit including a core mold having an outer shape corresponding to an inner shape of the preform, and being insertable into the preform, in which an exhaust port configured to discharge air from an inside of the preform through an inside of the core mold is provided at a tip end portion of the core mold facing a bottom portion of the preform.

In a method for manufacturing a resin container, in the adjusting the temperature of the preform, the preform is accommodated in a cavity mold, a refrigerant introduction member is inserted into the preform, the refrigerant introduction member including a first flow path and a second flow path which are different in introduction or discharge position of a refrigerant, the preform is cooled by bringing the preform into close contact with an inner wall of the cavity mold at a pressure of the refrigerant introduced from the refrigerant introduction member. When the preform is cooled, cooling is performed by switching between a first cooling blow for introducing the refrigerant from the first flow path and discharging the refrigerant from the second flow path and a second cooling blow for introducing the refrigerant from the second flow path and discharging the refrigerant from the first flow path.

A method for manufacturing a resin container includes: a first injection-molding step of injection-molding a bottomed cylindrical resin intermediate molded body; a second injection-molding step of injection-molding a resin material on an outer side of the intermediate molded body to manufacture a multilayered preform having a resin layer laminated on an outer peripheral side of the intermediate molded body; and a blow-molding step of blow-molding the preform to manufacture a resin container having a thick portion.

A temperature adjusting unit of a blow molding apparatus includes: a first drive unit configured to drive a core mold, from which the cooling air is supplied, in a first direction; a second drive unit configured to drive a cavity mold that accommodates the preform in a second direction; a first lock portion configured to restrict a movement of the first drive unit in the second direction at a first position where the core mold is inserted into the preform; and a second lock portion configured to restrict a movement of the second drive unit in the first direction at a second position where the preform is accommodated in the cavity mold.

A manufacturing method for manufacturing a biodegradable resin container includes at least: an injection molding process of injection molding a preform made of a biodegradable resin in an injection molding mold; a temperature adjustment process of adjusting a temperature of the preform in a temperature adjustment mold; and a blow molding process of manufacturing a container by blow molding the preform after temperature adjustment in a blow mold, in which a temperature of the injection molding mold is set to 40° C. or lower.

Provided is a method for manufacturing a container 10 made of resin, the method including an injection molding step S1, a temperature adjustment step S2, and a blow molding step S3. In the temperature adjustment step S2, a preform 11 is accommodated in a cavity mold 31, an air introduction member 32 is brought into airtight contact with the preform 11, the air is supplied from a blowing port of the air introduction member 32 into the preform 11, and the air is discharged from a discharge port of the air introduction member 32 to an outside of the preform 11, so that the preform 11 is in close contact with an inner wall of the cavity mold 31 and is cooled.

A method for manufacturing a resin container, the method including: injection-molding a bottomed preform made of resin; and blow-molding the preform to manufacture a resin container, in which the injection molding includes filling a cavity formed by at least an injection core mold and an injection cavity mold with a molten resin to form the preform, and a first groove that extends from a bottom portion defining portion to a neck portion defining portion is formed in a surface of the body portion defining portion of the injection core mold.

In a method for manufacturing a resin container, in the adjusting the temperature of the preform, the preform is accommodated in a cavity mold, a refrigerant introduction member is inserted into the preform, the refrigerant introduction member including a first flow path and a second flow path which are different in introduction or discharge position of a refrigerant, the preform is cooled by bringing the preform into close contact with an inner wall of the cavity mold at a pressure of the refrigerant introduced from the refrigerant introduction member. When the preform is cooled, cooling is performed by switching between a first cooling blow for introducing the refrigerant from the first flow path and discharging the refrigerant from the second flow path and a second cooling blow for introducing the refrigerant from the second flow path and discharging the refrigerant from the first flow path.

A manufacturing apparatus for manufacturing a resin container includes an injection molding part configured to injection-mold a preform, and a temperature adjustment part configured to adjust a temperature of the preform molded in the injection molding part, in which the manufacturing apparatus is configured to blow-mold the preform whose temperature has been adjusted in the temperature adjustment part, the preform is inserted into the temperature adjustment part in a state where an outer surface temperature of the preform is higher than a glass transition temperature of the preform by 30° C. or higher and 60° C. or lower, and the preform is cooled to a predetermined temperature suitable for blow molding in the temperature adjustment part.