Sheet-material associating – Associating and folding – Zigzag package
Patent
1990-03-16
1991-11-05
Look, Edward K.
Sheet-material associating
Associating and folding
Zigzag package
493410, 493412, B41L 132
Patent
active
050625977
ABSTRACT:
A method of forming a new pile after the discharge of a completed pile in a machine for forming piles in zigzag fashion from a flexible web, the method consisting in rupturing the web at a transverse perforation line located between the last flap of the pile being formed and the first flap of the new pile to be formed, advancing the ruptured web until the forward edge of the first flap reaches a position corresponding to its final position at the base of a new pile, stopping the swinging unit, lowering the supporting table for discharge of the completed pile and providing a pressure air cushion underneath the zone of the forward edge of the first flap which forms a temporary support during the absence of the supporting table, removing the temporary supporting cushion when the table has returned to its working position and restarting the operation of the swinging unit.
REFERENCES:
patent: 4460350 (1984-07-01), Mittal et al.
patent: 4730762 (1988-03-01), Felix
patent: 4842573 (1989-01-01), Peter
Martin Martial G. E.
Nuttin Pierre L. V.
Look Edward K.
Newholm Therese M.
Syntone
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