| 摘要 |
An apparatus for controlling the atmosphere of the sterile chamber in an aseptic packaging machine of the kind in which packaging material in web form is first brought in contact with a chemically acting sterilising liquid and is subsequently led through the interior of a sterile chamber inside which the packaging material is freed from liquid residues, and in which the packaging material is formed into a flexible tube and subdivided into individual, filled packages, in which the interior of the sterile chamber forms part of a flow circuit in which the mixture of chamber air and sterilising agent vapour forming the chamber atmosphere are circulated with the aid of a conveying means, in which further throttle means are provided between the chamber and conveying means for generating above-ambient pressure in the sterile chamber, and in which the circuit has means for limiting the concentration of the chemical sterilising agent in the atmosphere filling the sterile chamber. |
