Package making – Methods – With contents treating
Patent
1981-04-16
1983-12-06
Heinz, A. J.
Package making
Methods
With contents treating
53481, 53512, 53371, B65B 3100
Patent
active
044185138
ABSTRACT:
Flexible pouches filled with product are advanced to a steaming station where steam from a steam nozzle is directed downwardly toward the pouches to drive air therefrom. A vacuum nozzle is inserted downwardly within the steam nozzle and into each pouch at the steaming station, the upper end portion of the pouch is closed around the vacuum nozzle and then a vacuum is drawn through the vacuum nozzle to evacuate the air in the pouch. The top of the pouch is sealed immediately after the vacuum nozzle is retracted out of the pouch. To close the pouch around the vacuum nozzle, two heads are disposed on opposite sides of the pouch but are located out of contact with the pouch. Jets of pressurized air are directed from the heads and against the pouch to close the pouch against the vacuum nozzle without creating wrinkles in the pouch.
REFERENCES:
patent: 2423237 (1947-07-01), Haslacher
patent: 3182432 (1965-05-01), Canfield
patent: 3430414 (1969-03-01), Ludwig et al.
patent: 3619975 (1971-11-01), Johnson et al.
patent: 3914917 (1975-10-01), Young
patent: 4081942 (1973-04-01), Johnson
patent: 4170347 (1979-10-01), Lewis
Heinz A. J.
Rexham Corporation
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