A device for forming plastic parisons into plastic containers includes at least one forming station arranged on a conveying device and configured to form plastic parisons into plastic containers by applying a gaseous medium, the forming station includes an application device configured to apply the flowable medium to the plastic parisons, and includes a pressure supply device and/or is in fluidic connection with a pressure supply device configured to provide the flowable medium at a prespecified pressure, wherein pressure provided by the pressure supply device is greater than pressure required and/or used for the application to the plastic parisons, wherein the device includes at least one valve device which controls application to the plastic parisons, which valve device is configured to interrupt the supply of air into the container when the pressure of the flowable medium within the container has reached a prespecified pressure level.

To simply sterilize a blow-molding machine.

A mist or gas of hydrogen peroxide or a mixture thereof is introduced through a valve block (14) disposed adjacent to a molding die (13), thereby sterilizing at least the molding die (13) and an extension rod (15) that extends into the molding die (13) through the valve block (14).

A device for treating hollow bodies, comprising at least a nozzle and a circuit for setting a pressurized airflow in circulation, having a valve and a first pressure sensor measuring a first pressure; a control distributor of said valve; a line connecting said distributor to said valve; a control unit with a time measurement component; wherein said device comprises a second pressure sensor situated along said line, measuring a second pressure, and wherein said control unit comprises means that are able to determine a differential between the measurement of the first pressure and the measurement of the second pressure as a function of time. The invention also relates to a corresponding treatment method.

An apparatus for manufacturing a liquid container, in which a nozzle unit has a seal body disposed in a supply path, the seal body has an annular first seal portion, an annular second seal portion and a spare supply path extending from a flow inlet located between the first seal portion and the second seal portion to a flow outlet located closer to a tip side of the seal body than the second seal portion, and the seal body can move between a blocked position where the first seal portion sits on the supply path, a spare supply position where the first seal portion separates from the supply path and the second seal portion sits on the supply path and an open position where the first seal portion separates from the supply path and the second seal portion separates from the supply path.

A liquid container manufacturing method includes: a nozzle fitting step of fitting a blow nozzle to a mouth of a preform; a liquid blow molding step of liquid blow molding the preform into a halfway shape by supplying a predetermined volume of liquid that is less than a full capacity of a liquid container from a liquid supply port of the blow nozzle to the preform; and an air blow molding step of molding the preform into a shape conforming to an inner surface of a mold for blow molding by supplying pressurized air from a gas supply port to the preform after the liquid supply port is closed, in which a headspace is generated in the liquid container, having a volume corresponding to a difference between a volume of the liquid supplied to the preform in the liquid blow molding step and a full capacity of the liquid container.

A method for forming plastic preforms into plastic containers, wherein the plastic preforms being transported along a predetermined transport path and being acted upon and expanded by a flowable medium during this transport, a controllable valve of a reducing station controlling the action of the flowable medium on a compressed-air reservoir, in particular an annular channel, and a desired target pressure being predetermined, with which the compressed-air reservoir is acted upon, this desired target pressure being taken into account in the control of the valve of the reducing station wherein an actual pressure is determined and this actual pressure is compared with the desired target pressure and, from this comparison, a correction value is determined which is taken into account and/or used in the control of the valve.

Process for aseptically forming containers (100) starting from parisons made of thermoplastic material, comprising the steps of: injecting sterile compressed air inside a parison arranged in a stretch-blowing forming mould (2) so as to obtain a container (100); evacuating the exhaust compressed air from the formed container (100); making at least a part of the exhaust compressed air evacuated from the formed container (100) passing through a sterile filter (SF) so as to obtain recovery sterile air; injecting the recovery sterile air in another parison arranged in another forming mould (2).

A device of a blow-moulding apparatus for moulding hollow bodies, in particular a stretch blow-moulding machine, is disclosed. The device includes a housing block with a through-bore, at least one valve with a movable piston and with a valve chamber, a first channel which runs in the housing block and which connects the valve chamber to the through-bore, a second channel which connects the valve chamber to an external line, and a cover for fastening the valve to the housing block. The valve connects the first channel and the second channel to one another and separates them from one another. The second channel runs at least partially in the cover and/or at least one part of the valve chamber is arranged in the cover and surrounds the piston. The device is small and compact and the valves may be replaced in a simple manner.

Method for actuating a valve unit, which has a process pressure inlet, a process pressure outlet and a valve chamber connecting the process pressure inlet to the process pressure outlet and a movable piston for closing and opening the connection between the process pressure inlet and the process pressure outlet. The piston is able to be subjected on a first side to a first control pressure and the piston is able to be subjected on a second side to a second control pressure. The piston is moved by means of the first control pressure and the second control pressure for the purpose of closing and opening the connection. In the operating state of the valve unit, the piston is permanently subjected to the first control pressure, wherein the piston is additionally subjected to the second control pressure for moving the piston in one direction and wherein a pressure which is higher than atmospheric pressure and lower than the second control pressure is used as the first control pressure.

Ways for simultaneously forming and filling a container are provided. A hydraulic intensifier (60) receives a first liquid (18) and dispenses the first liquid (18) at a first pressure, where a moveable member (62) having a first surface (64) contacts the first liquid (18) and a second surface (66) contacts a second liquid (68). The second liquid (68) provides a second pressure on the second surface (66) so that the first pressure is applied to the first liquid (18) by the first surface (64). The first surface (64) has a smaller area than the second surface (66) and the first pressure is greater than the second pressure. A blow nozzle (22) transfers the first liquid (18) at the first pressure into a preform (12) within a mold cavity (16) to urge the preform (12) to expand toward an internal surface (34) of the mold cavity (16) and form a resultant container. The first liquid (18) remains within the container as an end product.