Flexible pack possessing an evacuation means and device for the

Details Flexible pack possessing an evacuation means and device for the Flexible pack possessing an evacuation means and device for the

1987-08-24

1988-08-23

Sipos, John

Package making

With contents treating

Vacuum or inert atmosphere

53390, 53373, 53434, B65B 3100

Patent

active

047651253

ABSTRACT:
The pack according to the invention possesses an edge 4 delimiting an orifice and an evacuation means comprising an elastically compressible volume 5 having a wall, which possesses means for the passage of air 8, and arranged inside the pack near the edge 4 of the pack, but at a distance from this. The invention also relates to a device allowing the alternate compression and expansion of the compressible volume, whilst at the same time ensuring alternate communication between the latter and the inside of the bag or the outside.

REFERENCES:
patent: 3516223 (1970-06-01), Anderson
patent: 4295566 (1981-10-01), Vincek
patent: 4330975 (1982-05-01), Kakiuchi
patent: 4418514 (1983-12-01), Spann

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