A method of hydraulically blow molding a container from a preform using a liquid end product as a liquid blow medium. The method includes the steps of hydraulically blow molding a formed and filled container from a preform using the liquid blow medium and engaging a fluid tight seal with the container while the container is retained within a mold in the forming station. The engaging of the seal includes engaging an axially extending ring of the seal in one of a press-fit or frictional engagement with an inner surface of the container such that the seal is retained on the container by that engagement.

A liquid blow molding device and a liquid blow molding method are configured to supply pressurized liquid to a preform mounted to a mold to mold the preform into a shape along a cavity of the mold, and includes a blow nozzle fitted into a mouth portion of the preform, a plunger pump configured to supply pressurized liquid to the preform through the blow nozzle and a controller configured to control operation of the plunger pump. The controller controls operation of the plunger pump by position control in which a plunger of the plunger pump is moved from an original position to a predetermined final position with a predetermined operating force.

A temperature adjustment device (2) for thermally conditioning preforms (10) made of a thermoplastic material for subsequent molding including a transport device based on the rotary principle for transporting the preforms along a transport path that has at least one section with two adjacent transport lanes (32, 34) for transporting the preforms in two adjacent rows. Heating elements (36) are arranged between the transport lanes for heating the preforms. Each heating element acts on preforms in both transport lanes. At least one compensation device (22, 22′, 23, 24) for compensating for temperature differences between the preforms is assigned to the two transport lanes, which exclusively or more strongly acts on preforms in one of the two transport lanes for adjusting their temperature. Also, a container manufacturing machine (1) for manufacturing containers (12) from preforms that includes a temperature adjustment device.

A temperature adjustment device (2) for thermally conditioning preforms (10) made of a thermoplastic material for subsequent molding including a transport device based on the rotary principle for transporting the preforms along a transport path that has at least one section with two adjacent transport lanes (32, 34) for transporting the preforms in two adjacent rows. Heating elements (36) are arranged between the transport lanes for heating the preforms. Each heating element acts on preforms in both transport lanes. At least one compensation device (22, 22′, 23, 24) for compensating for temperature differences between the preforms is assigned to the two transport lanes, which exclusively or more strongly acts on preforms in one of the two transport lanes for adjusting their temperature. Also, a container manufacturing machine (1) for manufacturing containers (12) from preforms that includes a temperature adjustment device.

A liquid blow molding method of molding a liquid container containing a content liquid from a preform, includes a nozzle engagement step of engaging a blow nozzle with a mouth portion of the preform; a molding step of molding the preform into a container of a predetermined shape by supplying a pressurized liquid into the preform; a suck-back step of sucking back a predetermined amount of liquid from the inside of the container to a supply channel by operating a pump in a reverse direction with the container put in the upside-down posture while the blow nozzle is engaged with the mouth portion; and a nozzle separation step of separating the blow nozzle from the mouth portion with the container put in the upright posture.

A method for producing filled containers (16) from preforms (13). Each of the preforms is transferred to a circulating molding and filling element (14) of a molding and filling station and is shaped into the respective container in a subsequent molding and filling process in a mold under the effect of pressure from a supplied filler, wherein the mold is designed in multiple parts, including a base mold (21) and mold sides (19, 20), and each container is clamped between the base mold at the bottom and the molding and filling element at the top at least at the end of the molding and filling process. The container is separated from the respective molding and filling element and the respective mold after the molding and filling process. The mold sides are removed from each container before the molding and filling element and the base mold are separated from the container.

A container production method by liquid blow molding has a liquid blow molding step of supplying a pressurized liquid into a preform disposed in a metal mold to mold the preform into a container having a trunk that has a flat shape in a plan view and holds the liquid; and a transferring step of taking the container out from the mold and transferring the container in an approximate short axis direction of the trunk.

A liquid-containing container manufacturing method includes: a liquid blow molding step of molding a preform into a liquid-containing container of a shape along an inner surface of a mold for blow molding, by supplying a liquid pressurized from a supply path into the preform in a state in which a blow nozzle engages with a mouth part of the preform; and a headspace formation step of forming a headspace in the liquid-containing container, by operating a pressurized liquid supply source in a suction direction to discharge the liquid from inside the liquid-containing container through the supply path, thereafter closing the supply path, and discharging the liquid from inside the liquid-containing container through a discharge port of a discharge rod extending into the liquid-containing container through the blow nozzle.

A liquid-containing container manufacturing method includes: a liquid blow molding step of molding a preform into a liquid-containing container of a shape along an inner surface of a mold for blow molding, by supplying a liquid pressurized from a supply path into the preform in a state in which a blow nozzle engages with a mouth part of the preform; and a headspace formation step of forming a headspace in the liquid-containing container, by operating a pressurized liquid supply source in a suction direction to discharge the liquid from inside the liquid-containing container through the supply path, thereafter closing the supply path, and discharging the liquid from inside the liquid-containing container through a discharge port of a discharge rod extending into the liquid-containing container through the blow nozzle.

A method of forming a container from a plastic preform while using a liquid as a blow medium. During the method, liquid is withdrawn from the container to reduce pressure within the container prior to disengaging of the injection head from the container. In one aspect the method involves the opening of a recirculation valve to reduce the pressure. The opening of the recirculation valve allowing air dispersed within the liquid to rise to the top of the container before disengaging of a forming head from the container. As a result, splashing and spillage of liquid from the neck of the container is eliminated when the forming head disengages from the container.