Paper web buffer system

Details Paper web buffer system Paper web buffer system

B - Operations, Transporting

65

H

242/11

B65H 23/00 (2006.01) B65H 20/24 (2006.01)

Patent

CA 1115252

ABSTRACT OF THE DISCLOSURE A buffer system for isolating a supply of paper web from a processor operating on the paper web. The buffer system comprises a vacuum chamber and vacuum pump creating a pressure differential across a portion of the paper web forcing the web into the vacuum chamber in the form of a loop having suitable tension. The loop rises and falls within the vacuum chamber to either store or deliver web to the processor in response to the paper supply delivering more or less web than the processor can accommodate. In one embodiment, the vacuum chamber is provided with a movable wall to accommodate paper webs of different widths and a foot extending from the movable wall communicates with orifices to change the pressure differential.

326710

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