Roll for guiding web type material

Details Roll for guiding web type material Roll for guiding web type material

1989-12-19

1992-05-19

Stodola, Daniel P.

Advancing material of indeterminate length

With adherence or attraction of material to advancing means

By pneumatic pressure

B65H 2012

Patent

active

051140624

ABSTRACT:
A roll for guidance of web type material, such as paper or cardboard, has a shell that features a multitude of bores. The roll is coordinated with a device for subjecting the roll interior to suction. To hold the web on the roll at standstill, part of these bores can be subjected to suction. In the operation of the roll, air trapped between the web and the roll shell can enter the roll also through the remaining bores and escape in the roll area that is not looped by the web.

REFERENCES:
patent: 3593901 (1971-07-01), Eltz et al.
patent: 3869095 (1975-03-01), Diltz
patent: 4207998 (1980-06-01), Schmid
patent: B4249688 (1981-08-01), Klemm
patent: 4408727 (1983-10-01), Dropczynski

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