Registering, tensioning, smoothing or guiding webs

Industry

  • CPC
  • B65H23/00
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Sub Industries

B65H23/005Sensing web roll diameter B65H23/02transversely B65H23/0204Sensing transverse register of web B65H23/0208with an element engaging the edge of the web B65H23/0212with an element utilising fluid flow B65H23/0216with an element utilising photoelectric effect B65H23/022by tentering devices B65H23/025by rollers B65H23/0251with a straight axis B65H23/0253with axially movable elements B65H23/0255with axially stretchable elements B65H23/0256with opposed helicoidal windings B65H23/0258with a bowed axis B65H23/028by clips B65H23/032Controlling transverse register of web B65H23/0322by acting on edge regions of the web B65H23/0324by acting on lateral regions of the web B65H23/0326by moving the unwinding device B65H23/0328by moving the winding device B65H23/035by guide bars B65H23/038by rollers B65H23/04longitudinally B65H23/042Sensing the length of a web loop B65H23/044Sensing web tension B65H23/046Sensing longitudinal register of web B65H23/048by positively actuated movable bars or rollers B65H23/06by retarding devices B65H23/063and controlling web tension B65H23/066Electrical brake devices therefor B65H23/08acting on web roll being unwound B65H23/085and controlling web tension B65H23/10acting on running web B65H23/105and controlling web tension B65H23/12and causing parts thereof to move in opposite directions and in frictional engagement B65H23/14Tensioning rollers applying braking forces B65H23/16by weighted or spring-pressed movable bars or rollers B65H23/18by controlling or regulating the web-advancing mechanism B65H23/1806in reel-to-reel type web winding and unwinding mechanism B65H23/1813acting on web-roll B65H23/182in unwinding mechanisms or in connection with unwinding operations B65H23/1825and controlling web tension B65H23/185motor-controlled B65H23/188in connection with running-web B65H23/1882and controlling longitudinal register of web B65H23/1884with step-by-step advancement B65H23/1886Synchronising two or more webs B65H23/1888and controlling web tension B65H23/192motor-controlled B65H23/195in winding mechanisms or in connection with winding operations B65H23/1955and controlling web tension B65H23/198motor-controlled (Controlling electrical drive motors therefor) B65H23/24by fluid action B65H23/245Suction retarders B65H23/26by transverse stationary or adjustable bars or rollers B65H23/28by longitudinally-extending strips, tubes, plates, or wires B65H23/30by longitudinally-extending flexible tapes or bands B65H23/32Arrangements for turning or reversing webs B65H23/34Apparatus for taking-out curl from webs