B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
341/44.2
B65H 23/18 (2006.01) B65H 18/14 (2006.01) B65H 18/26 (2006.01) B65H 23/195 (2006.01)
Patent
CA 1191930
ABSTRACT OF THE DISCLOSURE: A method of controlling the web tension of a web roll, in particular a paper web roll, which roll is being wound in a winder including two individually driven web roll supporting rollers. Separate signals representative of the speed of rotation of each driven supporting roller are derived, and the speed of rotation of each driven supporting roller is controlled in dependence on a dif- ference between these signals, to thereby control the web tension of the web roll. The method includes measuring a number of turns and a length of web wound during a measuring period, signals resulting from these measurements being supplied with information about a surface weight of the web to a device for computing a density signal for the portion of the web roll formed during the measuring period. Such a density signal is used as a superordinate control signal for controlling the web tension of the web roll.
424953
Olsson Ingemar
Ottosson Goran
Sinner Bengt
Asea Aktiebolag
Robic Robic & Associes/associates
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