Method and device for evacuating gas tight envelope

Details Method and device for evacuating gas tight envelope Method and device for evacuating gas tight envelope

1994-04-06

1996-02-20

Sipos, John

Package making

Methods

With contents treating

53432, B65B 3100

Patent

active

054919576

ABSTRACT:
An improved method and device are provided for evacuating gas from a gas tight envelope such as a bag of plastic film, enclosing solid or granular material. The vacuum probe used in accordance with the invention to evacuate the envelope has one or more parallel grooves or apertures extending its length. The probe is inserted into the envelope in such a way that the grooves or apertures tangentially oppose the contents of the envelope and provide a vacuum, across the length of the probe to prevent blocking of the probe and ceasing evacuation of the gas.

REFERENCES:
patent: 3208193 (1965-09-01), Rumsey, Jr.
patent: 3611524 (1969-09-01), Broyles
patent: 3823750 (1974-07-01), Owen
patent: 4221101 (1980-09-01), Woods
patent: 4575990 (1986-03-01), von Bismarck
patent: 4990153 (1991-02-01), Richards
patent: 5044142 (1991-09-01), Gianelli

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