Package making – Methods – Conforming by stretching or shrinking of cover over contents
Patent
1991-03-06
1992-08-25
Coan, James F.
Package making
Methods
Conforming by stretching or shrinking of cover over contents
53450, 53547, 53556, 83 621, 493 33, B65B 6106
Patent
active
051408007
ABSTRACT:
A method and apparatus is provided for severing packaging material which extends between successive wrapped loads during a continuous packaging process. A conveyor assembly conveys the wrapped loads along a load path in a conveying direction. The conveyor assembly includes a first conveyor portion having a discharge area and a second conveyor portion having a receiving area downstream and a step down from the discharge area of the first conveyor portion. A severing assembly includes a severing element located above the second conveyor portion for severing the packaging material between loads. A pivoting breakaway mechanism permits the severing element to pivot in the conveying direction. An escapement mechanism, responsive to load sensors, transports the severing element to a position spaced from the load path when the severing element encounters a load.
REFERENCES:
patent: 3020687 (1962-02-01), Joa
patent: 3626797 (1971-12-01), Calvert et al.
patent: 3800498 (1974-04-01), Suzuki
patent: 4050220 (1977-09-01), Lancaster et al.
patent: 4738079 (1988-04-01), Lancaster et al.
Bird Bill
Fain John
Martin Curtis
Martin Stuart
Moore Phil
Coan James F.
Lantech Inc.
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