Vacuum cylinder

Details Vacuum cylinder Vacuum cylinder

1996-01-16

1998-02-10

Sipos, John

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493257, 493418, 493434, 493450, 493453, 533816, 533822, B31B 0148

Patent

active

057163120

ABSTRACT:
A vacuum cylinder is disclosed. The vacuum cylinder may be used in an envelope manufacturing machine, or machines for manufacturing other articles, to facilitate folding of articles about a preformed fold line, such as envelope seal flaps, during the manufacturing process. The vacuum cylinder has at least two rows of suction holes which are arranged at least substantially adjacent to each other and preferably overlap to a certain extent.

REFERENCES:
patent: 2473069 (1949-06-01), Niks
patent: 3037557 (1962-06-01), Faeber et al.
patent: 3689061 (1972-09-01), Nystrand
patent: 4091596 (1978-05-01), Jones
patent: 4838982 (1989-06-01), Klaeser et al.
patent: 5135614 (1992-08-01), Aula et al.
patent: 5155973 (1992-10-01), Hipko et al.
patent: 5176611 (1993-01-01), VerMehren
patent: 5223812 (1993-06-01), Coppola
patent: 5538575 (1996-07-01), Hinton

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