Apparatus and method for controlling tension in a web

Details Apparatus and method for controlling tension in a web Apparatus and method for controlling tension in a web

1994-07-21

1996-03-26

Jillions, John M.

Winding, tensioning, or guiding

Tension control or brake

Supply controlled

2424181, 2424206, 226118, B65H 2324

Patent

active

055014127

ABSTRACT:
An apparatus for controlling tension in a web includes devices such as unwinding and calendar or wind-up rollers for supporting opposite ends of the web. A pressure region is formed between the opposite ends of the web adjacent a first side of the web. The pressure region is at a lower pressure than ambient pressure, such that the web is urged in a direction of the pressure region. The web supported at its opposite ends by the supporting devices is placed in tension in an amount corresponding to the pressure of the pressure region.

REFERENCES:
patent: 3773275 (1973-11-01), Coppa et al.
patent: 3871597 (1975-03-01), LaMers
patent: 3940080 (1976-02-01), Bennett

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