Process and apparatus for forming a minimal headspace pouch
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United States of America Patent
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Aug 24, 2010
Grant Date -
Sep 4, 2008
app pub date -
Mar 5, 2008
filing date -
Jun 5, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A process for forming a pouch having an evacuated headspace containing a flowable material is disclosed. The process includes the steps of: providing a continuous tube of flexible and sealable film; supplying the continuous tube with a predetermined amount of flowable material; pinching the continuous tube above a sealing region so as to form a pinched portion of the continuous tube; evacuating the headspace between the pinched portion and the predetermined amount of flowable material; and sealing the continuous tube at the sealing region to form a top seal of a previously formed pouch containing flowable material and a bottom seal of a next-to-be filled pouch. Also disclosed is a vertical form-fill-seal apparatus for forming a pouch containing a flowable material and having an evacuated headspace.
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