Back to results
US 5,771,793 AGranted
Calender having a control device
AssigneeVoith Sulzer Finishing GmbH
InventorFranz Kayser
Life of this patent
Estimating the term…
Abstract
A calender for treating a web of material includes at least two rollers forming a roller nip therebetween. A take-up device is disposed downstream from the at least two rollers. At least one longitudinal cutter is disposed between the at least two rollers and the take-up device. The at least one longitudinal cutter divides the web of material into at least two partial webs. The take-up device has at least two winding stations. Each of the winding stations corresponds to one of the partial webs.
Claims23
A calender for treating a web of material comprising:
- at least two rollers forming a roller nip therebetween;
- a take-up device disposed downstream from said at least two rollers;
- and
- at least one longitudinal cutter disposed between said at least two rollers and said take-up device, said at least one longitudinal cutter having means for dividing the web of material into at least two partial webs, said take-up device having at least two winding stations, each of said winding stations corresponding to one of said partial webs, each of said winding stations having a drive device and a partial web roll, said drive devices being controlled by a control device which maintains the circumferential speed of said respective partial web roll at approximately the same speed as the web of material through said at least two rollers, said control device controls the circumferential speed of each partial web roll individually.
1 more element
A calender for treating a web of material comprising:
- at least two rollers forming a roller nip therebetween;
- a take-up device disposed downstream from said at least two rollers;
- at least one longitudinal cutter disposed between said at least two rollers and said take-up device, said at least one longitudinal cutter having means for dividing the web of material into at least two partial webs, said take-up device having at least two winding stations, each of said winding stations corresponding to one of said partial webs;
- and
- a control device to control the calender functions in a zone-by-zone manner, said calender functions including at least one of a compressive stress in said roller nip, a dwell time of the web of material in said roller nip, a temperature of the web of material, and a moisture of the web of material, said control device being dependent on properties of at least one of said partial webs and said partial web rolls.
2 more elements
Dependencies are inferred from the claim text.