Method for manufacturing flexible bags and vertical type forming, filling and sealing machine
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United States of America Patent
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May 4, 2004
Grant Date -
Aug 8, 2002
app pub date -
Mar 7, 2001
filing date -
Feb 6, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A vertical type forming, filling and sealing machine according to the present invention includes a film shaping mechanism for forming long lengths of film into tubular shapes, a vertical sealing mechanism for heat sealing the edges of the film formed by the film shaping mechanism in the longitudinal direction of the film to form tubular film, a supply nozzle for supplying contents into the tubular film, and two horizontal sealing mechanisms for heat sealing the tubular film in its width direction. A first horizontal sealing mechanism heat seals opposing inner surfaces of the tubular film except for a portion in the width direction. A second horizontal sealing mechanism is placed below the first horizontal sealing mechanism and heat seals the area which is not heat sealed by the first horizontal sealing mechanism.
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