Apparatus and method for formation of sealed packages
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United States of America Patent
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Apr 8, 2003
Grant Date -
Feb 28, 2002
app pub date -
Mar 6, 2001
filing date -
Sep 17, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for evacuating and sealing a bag made of a sealable material and containing a comminuted product. The bag is positioned with its open upper end around a sleeve through which a hollow probe can be extended. A pair of upper jaw members close to form an outer temporary seal above an intermediate region of the bag above the level of the surface of the charge in the bag where a permanent seal is to be formed. A pair of lower jaws members close to form an inner temporary seal about a lower region of the bag above the surface of the charge. With the probe extended through the sleeve into the bag, the bag is evacuated through the probe. After evacuation is completed and after withdrawal of the hollow probe, a pair of sealing members close against the intermediate region of the bag in order to form a permanent seal for the bag.
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