Bag top forming method and apparatus
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United States of America Patent
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Oct 10, 1989
Grant Date -
N/A
app pub date -
Feb 25, 1988
filing date -
Feb 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided a method and an apparatus for forming the tops of material-filled bags into substantially fin-like shapes suitable for sealing in conventional top-sealing machines. The filled bags may be conveyed at random to a top-forming location in the apparatus where a bag is stopped, a device such as a pair of hinged plates is inserted into the top of the bag, front and back forming plates and side gusseting blades simultaneously engage the outside of the bag, forming the top into a fin-shape, the blades and plates are withdrawn, and the bag is then conveyed from the top-forming location. Bag tops are formed more consistently and with excess air expelled with the present method and apparatus.
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