Abstract: A dunnage conversion system for making a coil of dunnage from a sheet stock includes a coiler, a movable dancer upstream of the coiler and interposed in a path of the sheet stock, and a controller communicatively coupled to each of the coiler and the movable dancer. The coiler is configured to wind the sheet stock, and the controller is configured to control the speed of the coiler based on the position of the movable dancer to control tension of the sheet stock upstream of the coiler. The sheet stock drawn about the movable dancer may be a slit-sheet stock having a plurality of slits configured to expand under tension applied in a feed direction. The controller may be configured to control expansion of the slit-sheet stock upstream of the coiler allowing conversion of the sheet stock into a coil of relatively less dense dunnage prior to or during winding.

Abstract: A method of operating an off-line finishing device for fiber webs, in particular an off-line slitter-winder for winding fiber webs, wherein in operating the off-line device the running speed is automatically optimized to minimize cost of web breaks. The method considers the costs associated with a web break during unwinding in addition to the cost benefit of maximizing web unwind speed so as to maximize machine utilization. The method determines an optimal web break stopping time in a web break situation and how often a web break is predicted. Automatic optimization incorporates limitations including the maximum rotation speed of the parent roll, the maximum speed of the fiber web being unwound, the maximum positive torque which can be applied to the parent roll to accelerate the parent roll to a rotation rate which produces a desired web speed, and maximum braking torque.

Abstract: A paper rewinding machine includes a rewinding assembly operable to produce coreless retail paper rolls.

Abstract: An apparatus for controlling conveyance between rollers includes: a tension-control-amount-detector; a speed-shaft-speed-controller; a tension-shaft-speed-controller; a synchronous-speed-command-generation-unit synchronizing the speed-shaft speed command with a tension-shaft reference speed command; a tension-control-calculation-unit outputting a tension-control correction value based on proportional compensation based on a proportional gain, and integral compensation based on an integral gain; an adjustment-execution-command-generation-unit outputting an adjustment execution command during an automatic adjustment period; a binary-output-unit outputting one of positive and negative values of the additional-value amplitude as an additional value in adjustment during the automatic adjustment period; a tension-shaft-speed-command-generation-unit outputting a tension-shaft speed command based on the tension-shaft reference speed command, the tension-control correction value and the additional value in adjustment;

Abstract: An inter-roller conveyance control device conveying an object to be conveyed between a speed shaft roller driven by a speed shaft motor and a tension shaft roller driven by a tension shaft motor while providing tension to the object includes a gain table that stores a plurality of pairs of a conveyance condition variable changing while the object to be conveyed is conveyed and affecting an appropriate value of a control parameter and a control parameter candidate value that is an appropriate control parameter where, when the conveyance condition variable is changed, the device performs calculation on the basis of the conveyance condition variable and a gain calculation result and writes, into the gain table, the control parameter candidate value and the conveyance condition variable in association with each other when the calculation is completed.

Abstract: A web winding and measuring system is provided. The system includes a rotatably-mounted spool onto which a web of material is wound to form a roll. The system additionally includes a light-emitting device configured to illuminate the roll by light, providing a line on a cylindrical surface of the roll in a cross-machine direction, a light-receiving device configured to detect the line and generate measurement data from the detected line, and a computing device communicatively coupled to the light-receiving device and configured to receive the measurement data and calculate a diameter of the roll.

Abstract: A roll arrangement for determining a web tension profile of a web. The roll arrangement includes a roll having a peripheral surface for guiding the web, which peripheral surface is provided with a plurality of openings, and a plurality of sensor arrangements. Each of the plurality of openings are arranged to receive one sensor arrangement of the plurality of sensor arrangements to thereby sense forces applied by the web to the roll. The roll arrangement is adapted to suspend the sensor arrangements in the respective opening.

Abstract: A method and arrangement are provided in connection with a continuous material web, which runs from an unwinder to a winder, at least one of which being a center winder. The method includes providing an initial value for density of a material on the center winder, calculating a moment of inertia for a roll of material on the center winder, determining tightness of the material web, producing a correction term for torque calculation based on a material web tightness reference, the material web tightness and the moment of inertia of the roll of material, calculating a torque reference based on the produced correction term and the calculated moment of inertia of the roll of material, and controlling the torque of the center winder based on the torque reference. The method also includes correcting the density value of the material on the center winder based on the produced correction term.

Abstract: A winding apparatus providing steady tension includes: a loading unit rotatably supporting a roll of a sheet, releasing the sheet, and outputting an angle signal and a torque signal; a winding unit adapted to collect the sheet into a roll form; a dancer roller and a tension sensing unit separately arranged between the loading unit and the winding unit and outputting a shift signal and a tension signal respectively; and a control module having a calculating unit and a command unit. The calculating unit electrically connects with the loading unit, the dancer roller and the tension sensing unit to receive the signals and generates a torque command signal. The command unit electrically connects with the calculating unit and the loading unit to receive the torque command signal and produces a control signal by the torque command signal or a velocity signal.

Abstract: Registration and inspection systems and methods for use on a winder are disclosed. The systems and methods include scanning a region proximate a winding module with one or more sensors to determine a product defect. The product defect is then associated with a winding process parameter, such as percent roll build information or the identity of the particular sensor to first detect the defect. The winding process parameter is used to classify the defect into one or more defect profiles. The defect profiles can be based at least in part on segmenting the roll build of a web onto a winding module into a plurality of inspection windows and segmenting a plurality of sensors into a plurality of inspection sensor segments.

Abstract: Described is a method for operating a winding machine used for winding up and/or unwinding a winding material, said winding machine comprising a device for controlling and/or regulating the winding process. A variable value is monitored that concerns a machine state and/or a change in the winding material, and at least one parameter of said controlling and/or regulating device is modified in accordance with the change identified.

Abstract: A tensioner for controlling tension in a continuous web being wound onto a rewind roller after the web is processed, for example after printing on labels carried on the web. The tensioner receives the web from a processor and has a slack sensor between the processor and the input of the tensioner. The slack sensor indicates when the slack is a selected minimum, and the web is clamped by the tensioner. After a selected time, which is before the slack sensor indicates a maximum slack is present, the motor driving the rewind roller is stopped and the web is unclamped. After unclamping the web, the rewind roll is again driven at a speed to take up more of the web than that which is driven by the processor, to wrap the web around the core until the slack sensor indicates the slack in the web is at a minimum.

Abstract: A method and a device for controlling a winder, where the winding torque (Tw), during winding, is controlled as a function of the desired tractive force in the material to be wound. During winding, repeatedly is calculated which value a quantity (Vl), influencing the winding torque (Tw), has to adopt in order to obtain a desired tractive force (Fw), and an adjustment of the said quantity (V1) is carried out, the calculated value being used as an objective value. Preferably, the calculation is done by an algorithm, expressing the said quantity as a function of the desired tractive force (Fw), as a function of one or more fixed parameters which are characteristic for winding up material or for the winder, and as a function of one or more variable parameters, being measured or calculated during winding. The device also relates to a winder comprising a winding body (1), (2) for winding a material, a drive device (3,9),(4,10) for driving this winding body (1), (2) an a control device.

Abstract: In a method for controlling a storage roller for storing sheet-type objects, in particular banknotes, between the wound layers of a belt-type film, which is spooled to and fro between a film drum, which is driven by a first motor and comprises a film reservoir roll, and a winding drum, which is driven by a second motor and stores the sheet-type objects, the tension of the film is controlled to a predefined set value.

Abstract: The invention is an apparatus and method for accurately applying a cord to a rotatable mandrel while manufacturing cord reinforced articles. The apparatus includes a rotating build mandrel, a cord supply, and a feed capstan for assisting in feeding cord from the cord supply to the mandrel along a defined cord path. At least two drums of differing diameters are located in the cord path. Encoders are connected to each drum for measuring at least the angular movement of the drum. Using the angular movement of the drums, the effective pitch line differential of the cord is determined.

Abstract: A system and method is provided for developing speed and rotation count profiles for controlling the spindle drive on a towel winder system for winding rolls of paper, such as tissue or towel. The system and method monitors accumulated paper sheet length metered onto the winding spindle to control desired sheet count and finished roll dimension data. The system and method utilizes the accumulated paper sheet length and the desired finished roll data to calculate an instantaneous diameter. The instantaneous diameter calculation includes determining an effective thickness of the roll based on two forms of calculating finished roll cross-sectional area. The system and method also includes monitoring the actual line surface speed. The instantaneous diameter and the actual line surface speed are used to generate a speed reference signal and an inertia compensation signal. An outer compensation loop can be employed to trim the speed reference signal so that the revolution count can be controlled.