Vacuum packaging method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 5, 1988
Grant Date -
N/A
app pub date -
Jan 28, 1987
filing date -
Jan 30, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a vacuum packaging apparatus for packaging relatively large articles, a rotary valve is provided over a turntable having a plurality of vacuum chambers at its periphery so that an amount of air is supplementarily discharged from a vacuum chamber into one of other vacuum chambers before a complete vacuum is made and that a small amount of atmospheric air is sucked into the chamber to shrink preliminarily a packaging bag before its open end is sealed.
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