Package making – Methods – With contents treating
Patent
1995-11-29
1997-10-21
Sipos, John
Package making
Methods
With contents treating
53436, 53512, 53527, B65B 3100
Patent
active
056783876
ABSTRACT:
Method and apparatus for evacuating a vacuum package made from a thin-walled and flexible packaging material and filled with granular material. An open end of a filled package is folded in such a manner that a narrow gap is formed which constitutes an open communication between an interior and an exterior of the package. At least a part of the package is placed in a vacuum space and vacuumized for removing gasses from the package through the gap. Upon evacuation the package is sealed airtightly. Further, on at least a part of the packaging material defining the gap a force is exerted which reduces the gap width, so that the gap constitutes a filter for the granular material, whereby the granular material is retained inside the package during the evacuation of the package.
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Sara Lee / DE N.V.
Sipos John
Tolan Ed
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