Method and apparatus for controlling tension in a web offset pri

Details Method and apparatus for controlling tension in a web offset pri Method and apparatus for controlling tension in a web offset pri

1998-08-04

2000-07-11

Mansen, Michael R.

Advancing material of indeterminate length

Processes

Involving plural feeding means

101228, 226 42, 226108, 242418, B65H 2318, B41F 1354

Patent

active

060859563

ABSTRACT:
The inertial drag of idler rollers in a web-offset press with independently driven drive rollers is compensated by successively advancing downstream rollers during speed changes. This prevents low-tension conditions on the web and subsequent web breaks. Compensation is made for inertial coupling to the idler rollers through the web. Tension control is utilized to stabilize web position during startups and splices.

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