Patent
1977-07-27
1979-03-20
Gilden, Leon
93 52, 93 581, B31B 156
Patent
active
041448006
ABSTRACT:
Flat open carton blanks are fed by a conveyor past two rotating plows located on each side of the conveyor. A first plow is located upstream of the second plow, and a glue applicator is located in a position to apply glue to one edge of the blank. A stationary plow or wedge is located ahead of each rotating plow. As the blank is advanced, a first panel is folded upon the blank by the first rotating plow. Glue is applied to the edge of the first panel. As the blank is conveyed past the second rotating plow, a panel on the opposite side of the blank is folded upon the blank with its edge in contact with the glue applied to the edge of the first panel. The thus folded blank is passed through the nip of press rolls to press the two glued edges together. A diverter is provided to reject double folded blanks.
Upstream of the first plow are at least two sets of creasing rolls which back-break at least two preformed score lines in the blank to facilitate opening of the glued blank on a cartoner.
REFERENCES:
patent: 603471 (1898-05-01), Low
patent: 890464 (1908-06-01), Staude
patent: 2125147 (1938-07-01), Bergstein
patent: 2379127 (1945-06-01), Werner
patent: 2637251 (1953-05-01), Spiess
patent: 2850953 (1958-09-01), Barker et al.
patent: 2899873 (1959-08-01), Bombard
patent: 3116920 (1964-01-01), Geer
patent: 4056046 (1976-05-01), Hughes
Gilden Leon
R. A. Jones & Co. Inc.
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