Cylinder folder

Details Cylinder folder Cylinder folder

1976-12-08

1978-04-04

Burr, Edgar S.

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B65H 4516

Patent

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040822591

ABSTRACT:
In a cylinder folder for zig-zag folding a flexible web, air moves through openings in the walls of both cylinders to equalize and relieve pressure in the region between the web and the cylinders where the web is separated from the cylinders and laid down on the zig-zag stack. The air moves through the cylinder wall openings from the hollow cylinder interiors, which communicate with the ambient atmosphere through openings in the end walls of the cylinders.

REFERENCES:
patent: 3250528 (1966-05-01), Loose
patent: 3991994 (1976-11-01), Farish

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