Safety chamber
First Claim
1. A method of conveying a packaging material web in a packaging machine, which forms sealed packaging containers from the packaging material web, to sterilize the packaging material web, the method comprising:
- conveying the packaging material web into a safety chamber while the safety chamber is in a first state of pressure lower than a pressure outside the packaging machine;
conveying the packaging material web, which has passed through the safety chamber, through a lip seal at an inlet of an inlet chamber while the inlet chamber is in a second state of pressure lower than the pressure outside the packaging machine;
conveying the packaging material web, which has passed through the inlet chamber, through a peroxide bath; and
conveying the packaging material web, which has passed through the peroxide bath, through an aseptic chamber while the aseptic chamber is in a third state of pressure higher than the pressure outside the packaging machine.
1 Assignment
0 Petitions
Accused Products
Abstract
An arrangement is provided to prevent emissions of hydrogen peroxide from a packaging machine forming sealed packaging containers from a packaging material web. The packaging machine has a sterilization portion comprising an inlet chamber, a peroxide bath and an aseptic chamber. The aseptic chamber is held at an overpressure while the inlet chamber is held at an underpressure during normal operation of the packaging machine. The peroxide bath functions as a seal between the inlet chamber and the aseptic chamber. A safety chamber placed in front of the inlet chamber is held at an underpressure to avoid peroxide emissions to the environment. The packaging material web will pass the safety chamber before going into the inlet chamber.
44 Citations
11 Claims
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1. A method of conveying a packaging material web in a packaging machine, which forms sealed packaging containers from the packaging material web, to sterilize the packaging material web, the method comprising:
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conveying the packaging material web into a safety chamber while the safety chamber is in a first state of pressure lower than a pressure outside the packaging machine; conveying the packaging material web, which has passed through the safety chamber, through a lip seal at an inlet of an inlet chamber while the inlet chamber is in a second state of pressure lower than the pressure outside the packaging machine; conveying the packaging material web, which has passed through the inlet chamber, through a peroxide bath; and conveying the packaging material web, which has passed through the peroxide bath, through an aseptic chamber while the aseptic chamber is in a third state of pressure higher than the pressure outside the packaging machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification