Method for evacuating a vacuum package filled with granular...

Details Method for evacuating a vacuum package filled with granular... Method for evacuating a vacuum package filled with granular...

B - Operations, Transporting

65

B

B65B 31/02 (2006.01)

Patent

CA 2163836

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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