Sterile Gas Pressure Control for Packaging Apparatus
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Solution Overview
Problem
Existing packaging apparatuses for forming sealed packages of pourable products require a significant vertical extension to maintain the necessary hydrostatic pressure, which is time-consuming and costly to modify when production parameters change, such as package format or speed.
Innovation Solution
A packaging apparatus that uses a delimiting element to divide the tube into a high-pressure zone for sterile gas and a low-pressure zone, where the sterile gas provides the required hydrostatic pressure for package formation, reducing the need for a long pourable product column and allowing for easier adjustments to production parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a long pourable product column (at least 500 mm, up to 2000 mm) is maintained in the tube to provide required hydrostatic pressure, then package formation is achieved with correct shape, but the vertical extension of the isolation chamber must be elevated, increasing apparatus size and modification complexity when production parameters change
Solution Approach 1:
The patent introduces a gas feeding pipe that delivers sterile gas into the tube to create a pressurized gas phase. This pneumatic pressure replaces the traditional hydrostatic pressure provided by a long column of pourable product. The gas pressure is controlled by a control unit that adjusts gas flow based on production parameters, eliminating the need for a vertically extended isolation chamber while maintaining consistent package formation pressure.
Solution Approach 2:
The patent changes the physical state of the pressurizing medium from liquid (pourable product column) to gas (sterile gas). This parameter change allows for more flexible control of pressure through gas flow regulation rather than relying on the height of a liquid column. The control unit can adjust gas flow rates to match different production speeds and package formats without modifying the vertical chamber dimensions.
2Reliability
If the packaging apparatus is designed with a fixed structure for maintaining hydrostatic pressure, then consistent package formation is achieved, but modification time and costs increase when production parameters such as package format or speed need to be varied
Solution Approach 1:
The patent introduces dynamic control of gas pressure through a control unit that continuously adjusts gas flow based on actual production parameters. The system can adapt to changing package formats and speeds by modifying gas flow rates in real-time, rather than requiring fixed mechanical adjustments. This dynamic pneumatic control maintains consistent package formation across varying production conditions while enabling flexible adaptation to new parameters.
Solution Approach 2:
The control unit receives signals about production parameters (speed, package format) and adjusts gas flow accordingly to maintain optimal pressure for package formation. This feedback mechanism ensures that the system automatically adapts to changing conditions, maintaining reliable package formation without manual reconfiguration. The control system can detect parameter changes and adjust gas flow to compensate, reducing modification time and costs.
3Manufacturing precision
If a long pourable product column is used to provide hydrostatic pressure, then package formation is achieved, but the apparatus requires significant vertical space and becomes costly to modify when production parameters change
Solution Approach 1:
The patent replaces the hydrostatic pressure system with a pneumatic system. Instead of relying on a long column of pourable product to generate pressure, the system uses sterile gas delivered through a gas feeding pipe. This pneumatic approach provides the necessary pressure with minimal vertical space, as gas pressure is independent of height. The control unit regulates gas flow to maintain consistent pressure, simplifying the apparatus structure and reducing modification requirements when production parameters change.
Solution Approach 2:
The patent extracts the pressure-generating function from the pourable product column and separates it into a dedicated gas delivery system. The gas feeding pipe and control unit are distinct components that provide pressure independently of the product column height. This extraction allows the apparatus to maintain pressure with reduced vertical extension and enables easier modification, as the gas delivery system can be adjusted separately from the product handling components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces the vertical extension of the apparatus, minimizes modification time and costs when changing production parameters, and maintains accurate control over gas pressure, ensuring consistent package formation without damaging the tube.
Implementation Method 1
the sterile gas provides the required hydrostatic pressure for package formation
Data Source
AI summary
There is described a packaging apparatus for forming a plurality of sealed packages from a tube of a web of packaging material which is continuously filled with a pourable product. The packaging apparatus comprises a delimiting element arranged, in use, within the tube and being designed to divide the tube, in use, in a first space and a second space. The packaging apparatus also comprises a pressurizing device for pressurizing the second space by a sterile gas withdrawn from the inner environment of an isolation chamber within which the tube is formed. Furthermore, the delimiting element is also designed to allow, in use, a leakage flow of sterile gas from the second space into the first space.