Provided is an apparatus for expanding plastics material parisons into plastics material containers by a liquid medium with at least two transforming stations which fill and expand the plastics material parisons with the liquid medium with at least one common delivery device, which delivers the liquid medium to both transforming stations, wherein the transforming stations in each case have filling devices which fill the liquid medium into the plastics material parisons. According to the embodiments these transforming stations and/or filling devices in each case have a throttle device which are suitable and intended for changing the volume flow of the liquid entering the plastics material parisons.

A method of degasification of a carbonated beverage-filled container in an apparatus for blowing and filling containers, the apparatus including a mold enclosing a blown and carbonated beverage-filled container. The container includes a dispensing opening, an injection head that is movable along a longitudinal axis, passing by the dispensing opening of the container, between a sealing position in which the injection head is in a sealing engagement with the dispensing opening and a non-sealing position in which the injection head spaced from the dispensing opening. The method includes the steps of moving the injection head away from the sealing position to a first non-sealing position, moving the injection head from the first non-sealing position back to the sealing position, and after moving the injection head back, moving the injection head away from the sealing position to a second non-sealing position that is different from the first non-sealing position.

A method of degasification of a carbonated beverage-filled container in an apparatus for blowing and filling containers, the apparatus including a mold enclosing a blown and carbonated beverage-filled container. The container includes a dispensing opening, an injection head that is movable along a longitudinal axis, passing by the dispensing opening of the container, between a sealing position in which the injection head is in a sealing engagement with the dispensing opening and a non-sealing position in which the injection head spaced from the dispensing opening. The method includes the steps of moving the injection head away from the sealing position to a first non-sealing position, moving the injection head from the first non-sealing position back to the sealing position, and after moving the injection head back, moving the injection head away from the sealing position to a second non-sealing position that is different from the first non-sealing position.

A blow molding device in which pressure is accumulated in advance in a cylinder, which is used for providing pressurized an air space about a mouth of a preform to be molding into a container within a mold using a pressurized liquid. Pressure is also accumulated in advance in an accumulator. When a pressurized liquid is supplied into the preform, the opening-closing valve of the accumulator is opened to thereby apply the accumulated pressure within the accumulator to the liquid supplied into the preform, and the opening-closing valve is closed to thereby allow the accumulated pressure within the cylinder to pressurize the air space.

A method for inflating a chamber in an article composed at least partially of polymer layers, such as thermoplastic layers. The method can allow for forming an aperture in a polymer layer, inflating a chamber or volume in fluid communication with the aperture, and then welding or sealing the chamber so that the inflation fluid is substantially retained in the chamber and/or does not escape via the aperture. In various aspects, the formation of the aperture, inflation of the chamber, and sealing of the chamber or aperture can be performed by a single tool and/or based on a single registration of the thermoplastic article with a tool. In some aspects, formation of the aperture is enabled in part by using a punch with a cupped surface that allows the top layer of a thermoplastic article to be breached without forming a hole in at least one lower layer.

A method for inflating a chamber in an article composed at least partially of polymer layers, such as thermoplastic layers. The method can allow for forming an aperture in a polymer layer, inflating a chamber or volume in fluid communication with the aperture, and then welding or sealing the chamber so that the inflation fluid is substantially retained in the chamber and/or does not escape via the aperture. In various aspects, the formation of the aperture, inflation of the chamber, and sealing of the chamber or aperture can be performed by a single tool and/or based on a single registration of the thermoplastic article with a tool. In some aspects, formation of the aperture is enabled in part by using a punch with a cupped surface that allows the top layer of a thermoplastic article to be breached without forming a hole in at least one lower layer.

A method of manufacturing fuel tanks made of polymer material using a blow molding technique, the method including: offering up at least one sheet form extrudate between two opposing cavities of an open mold with an impression that corresponds to a shape of a tank that is to manufactured; then bringing the two cavities together until the mold is closed; as the two cavities are being moved closer together and before the extrudate comes into contact with one of them, injecting a first fluid between the extrudate and at least one cavity; injecting a second fluid on the opposite side of the extrudate from each cavity, to press it firmly against the wall of the cavity; removing the first fluid present between the cavity and the extrudate before end of injection of the second fluid.

A method of manufacturing fuel tanks made of polymer material using a blow molding technique, the method including: offering up at least one sheet form extrudate between two opposing cavities of an open mold with an impression that corresponds to a shape of a tank that is to manufactured; then bringing the two cavities together until the mold is closed; as the two cavities are being moved closer together and before the extrudate comes into contact with one of them, injecting a first fluid between the extrudate and at least one cavity; injecting a second fluid on the opposite side of the extrudate from each cavity, to press it firmly against the wall of the cavity; removing the first fluid present between the cavity and the extrudate before end of injection of the second fluid.

An injection device having an inlet for receiving a fluid, an outlet for injecting the fluid and a chamber therebetween. A control rod is provided in the chamber and includes a duct extending through said control rod. A central rod extends in the duct and is movable between a retracted position and an active position. The central rod and the duct being arranged to prevent fluidic communication between the duct and the chamber when the central rod moves between its retracted and active positions. The central rod and the control rod are further movable relative to each other into a cleaning position, in which the duct is placed in fluidic communication with the chamber.

An injection device having an inlet for receiving a fluid, an outlet for injecting the fluid and a chamber therebetween. A control rod is provided in the chamber and includes a duct extending through said control rod. A central rod extends in the duct and is movable between a retracted position and an active position. The central rod and the duct being arranged to prevent fluidic communication between the duct and the chamber when the central rod moves between its retracted and active positions. The central rod and the control rod are further movable relative to each other into a cleaning position, in which the duct is placed in fluidic communication with the chamber.