High speed carton feeding/heat sealing system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 8, 1996
Grant Date -
N/A
app pub date -
Feb 21, 1995
filing date -
Feb 21, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for feeding/heat sealing cartons along the feed path of a cartoning line is provided. A conveyor moves the cartons past the heat sealing station where an elongated nozzle assembly forms a heated air stream directed against the carton flap and the side of the carton to activate the coating to form an adhesive. A bypass valve and duct is provided to interrupt the flow of heated air in the event that the carton does not clear the activation zone in a predetermined time. Strategically placed heat shields and coolant passages are provided to further isolate the conveyor from the heat. The nozzle includes a slotted outlet with an elongated bar closely spaced above to deflect the heated air stream when a carton is present for adhesive activation; said bar having a tapered fin to form a modified air foil along the trailing edge to divide, recombine and compact the stream when a carton is not present. The upper feed belts of the conveyor are adjustable to adapt to cartons of various heights.
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