Abstract: The disclosure refers to a packaging device for manufacturing a packaging for a foodstuff. In particular, the packaging may include a trough-shaped lower packaging part and a top film which can be sealed together along their edges by means of a sealing tool of the packaging device. In order to improve a packaging device completely without evacuation or by evacuation in a simple and inexpensive manner with only a slight negative pressure in such a way that sufficient vapor purging is possible and at the same time cooling of the foodstuff before sealing or excessive degassing of the foodstuff does not take place, vapor can be introduced under pressure between the lower packaging part and the top film at at least one vapor entry point before sealing and can be released into the surrounding atmosphere at an outlet point from the packaging.

Abstract: A packaging machine comprises at least one work station for processing at least one packaging part. The work station comprises a fluid line. The packaging machine comprises a valve for controlling a flow of fluid through the fluid line. The packaging machine comprises a control system for controlling the valve. The valve comprises a valve body with a flow channel. The valve comprises a blocking body which is movable in the flow channel along an axial direction between a closed position and an open position, wherein in the closed position a flow of fluid through the flow channel is prevented and in the open position a flow of fluid through the flow channel is enabled. The blocking body is configured to be flowed through by the fluid in the axial direction in the open position of the blocking body.

Abstract: The disclosure refers to a packaging device for manufacturing a packaging for a foodstuff. In particular, the packaging may include a trough-shaped lower packaging part and a top film which can be sealed together along their edges by means of a sealing tool of the packaging device. In order to improve a packaging device completely without evacuation or by evacuation in a simple and inexpensive manner with only a slight negative pressure in such a way that sufficient vapor purging is possible and at the same time cooling of the foodstuff before sealing or excessive degassing of the foodstuff does not take place, vapor can be introduced under pressure between the lower packaging part and the top film at at least one vapor entry point before sealing and can be released into the surrounding atmosphere at an outlet point from the packaging.

Abstract: A packaging machine with an atmosphere modifying station in which an atmosphere within a packaging to be produced can be modified by evacuating air and/or introducing a gas. The packaging machine has a pressure control device that may control an evacuation pressure and/or a gassing pressure. The pressure control device may comprise a first controllable 2/2-way valve and a second controllable 2/2-way valve, both which are configured to influence the evacuation pressure and/or the gassing pressure by setting a volume flow. The first and second 2/2-way valves are connected in parallel with one another and are controllable independently of one another. In one embodiment, the first and second 2/2-way valves are preferably electrically controllable. A method of modifying an atmosphere within a package using a packaging machine and pressure control device is also provided.

Abstract: A packaging machine with an atmosphere modifying station in which an atmosphere within a packaging to be produced can be modified by evacuating air and/or introducing a gas. The packaging machine has a pressure control device that may control an evacuation pressure and/or a gassing pressure. The pressure control device may comprise a first controllable 2/2-way valve and a second controllable 2/2-way valve, both which are configured to influence the evacuation pressure and/or the gassing pressure by setting a volume flow. The first and second 2/2-way valves are connected in parallel with one another and are controllable independently of one another. In one embodiment, the first and second 2/2-way valves are preferably electrically controllable. A method of modifying an atmosphere within a package using a packaging machine and pressure control device is also provided.

Abstract: A sealing station for a packaging machine comprises a sealing tool for sealing packages, an underpressure source for evacuating packages in the sealing station, and an overpressure source for providing compressed air so as to press the sealing tool against a package. A single drive is provided for the underpressure source and the overpressure source, the underpressure source and/or the overpressure source being a pump that is configured as a rotary vane pump or as a helical pump.

Abstract: The disclosure relates to a packaging machine and to a method of forming a vacuum package. A first evacuable chamber is used for accommodating therein a product-accommodating section of a package, whereas a second evacuable chamber is used for accommodating therein an opening section of the package. Pressure gauges measure the pressure in both chambers, and a supply air valve serves to supply air into the first chamber. The disclosure is characterized in that the supply air valve is a control valve and is adapted to be controlled in dependence upon the difference between the pressures which prevail in the first and second chambers and which are measured by means of the two pressure gauges. The disclosure also relates to the fact that a gap is provided in a partition between the two chambers and that an adjuster is provided for varying and adjusting the cross-sectional area of said gap.

Abstract: The invention relates to a method for cleaning a vacuum pump embedded in a technical system. Water is provided for the cleaning, and a rotational speed of the vacuum pump is adjusted to a value in a cleaning rotational speed range. A defined amount of cold water and/or warm water is supplied to the vacuum pump and the vacuum pump is rinsed with the water during a predetermined time period. After letting the water escape from the vacuum pump, the vacuum pump is dried by aeration with gas or a gas mixture. The invention also relates to a cleaning system for cleaning the vacuum pump.

Abstract: The disclosure relates to a packaging machine and to a method of forming a vacuum package. A first evacuable chamber is used for accommodating therein a product-accommodating section of a package, whereas a second evacuable chamber is used for accommodating therein an opening section of the package. Pressure gauges measure the pressure in both chambers, and a supply air valve serves to supply air into the first chamber. The disclosure is characterized in that the supply air valve is a control valve and is adapted to be controlled in dependence upon the difference between the pressures which prevail in the first and second chambers and which are measured by means of the two pressure gauges. The disclosure also relates to the fact that a gap is provided in a partition between the two chambers and that an adjuster is provided for varying and adjusting the cross-sectional area of said gap.

Abstract: The invention relates to a packaging machine comprising at least one working station, in which a film is acted upon by means of underpressure or overpressure, characterized in that the pressure and/or the volume flow is regulated by means of a proportional controller.

Abstract: A sealing station for a packaging machine comprises a sealing tool for sealing packages, an underpressure source for evacuating packages in the sealing station, and an overpressure source for providing compressed air so as to press the sealing tool against a package. A single drive is provided for the underpressure source and the overpressure source, the underpressure source and/or the overpressure source being a pump that is configured as a rotary vane pump or as a helical pump.

Abstract: A packaging machine with at least one pneumatic drive is proposed, which packaging machine is insensitive to dirt and is easy to clean. According to the invention, this is achieved by provision of an integrated structural unit (8, 9, 10) which comprises a pilot valve and a pneumatic cylinder.

Abstract: The invention relates to a packaging machine comprising at least one working station, in which a film is acted upon by means of underpressure or overpressure, characterized in that the pressure and/or the volume flow is regulated by means of a proportional controller.