Abstract: A device for introducing patterns by radiating a wound continuous substrate. The device provides patterning during continuous roll-to-roll movement without material slippage and with minimal distortion by providing a dancer roll between a processing drum and an unwinder roll on one side, and a winder roll on the other side, for tautly guiding the continuous substrate along a contact surface of at least half of the circumference of the processing drum in order to drive the continuous substrate without slippage. The dancer rolls are adapted to tautly guide the advancing substrate web and returning substrate web with a constant force, and an equilibrium is adjustable between a defined counterforce and the constant action of force on the dancer roll by a stabilization device, and is maintained constant by a controller based on measured deflections of the dancer roll by controlling the rotational speed of the unwinder and winder rolls.

Abstract: A dress pack manager for use with a robotic arm having an end-of-arm tool supplied with power or working fluid via a dress pack. A pair of rollers are spaced apart such that the dress pack may pass between them, and such that rotation of the rollers applies friction to the dress pack and causes the dress pack to move. An electric motor rotates one of the rollers in both a forward and backward rotation and is torque-controlled to maintain a constant tension applied to the dress pack by the rollers.

Abstract: A method for winding a synthetic yarn coming from an extruder including the steps of connecting at least one yarn exiting from an extruder with at least one corresponding bobbin rotatable around a longitudinal axis thereof, on which the yarn is wound; rotating the bobbin by imparting a specific speed and/or torque to the bobbin; measuring a value of the tension acting on the yarn upstream of the bobbin; adjusting the speed and/or the torque to maintain the measured tension value substantially equal to a constant reference value of the tension.

Abstract: A method includes, a first step of starting rotation of a rotating axle, which is configured to detachably support a web, in a direction in which the web is wounded onto the rotating axle, a second step of detecting a tension applied to the web after the first step, a third step of performing open loop control on torque applied to the rotating axle until the tension greater than a designated value is detected with the second step, and a fourth step of performing feedback control on the torque applied to the rotating axle based on the detection value of the tension applied to the web after the tension greater than the designated value is detected with the second step.

Abstract: A web guide control unit for guiding a web is provided. The web guide control unit includes a web guide control unit for guiding a web. The web guide control unit includes a guide roller. The guide roller includes an adjustment unit and two tension measurement units for measuring the tension of the web at a first location and a second location of the guide roller. The present disclosure also provides a web processing apparatus with at least one web guide control unit as described herein is provided. A method for guiding a web by means of the web guide control or the web processing apparatus is also disclosed.

Abstract: An ultrasonic manipulator of dental floss is provided with an ultrasonic mechanism and a floss creep controller mechanism to enable periodic floss creep during use and a reverse of creep upon a tension designation. A process controller controls floss driving and an eccentric mechanism, and a user pause function allows a stop of floss motion and a locking of drive motors to allow floss to resist undue stress and to minimize damage to drive mechanism.

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 general winding and feeding apparatus includes a rotating shaft on the upper side of a standing wall of a base, and a motor is connected to the rotating shaft in the standing wall. A swing arm extends across a traveling material and is situated at a suitable position on the standing wall. Digital variable frequency methods may be used to drive the motor, which operates in conjunction with light-coupled sensors to detect the traveling speed of a material on the swing arm and sense a swing position of the swing arm. Feedback is generated in real-time to modify the speed of the motor, and the constant speed travel of the material can be achieved while being either wound or unwound.

Abstract: According to the disclosed is a method for controlling taper tension in the winding section of a web handling system, a more stable, high-quality wound roll can be produced by stabilizing radial stress distribution and minimizing telescoping, which is the lateral displacement of material in the winding section, using either hybrid taper tension control through a hybrid factor (?) or heaviside taper tension control through a heaviside factor (?), in the winding process, which is the final section of the roll-to-roll or web handling system.

Abstract: A printing apparatus and a roll paper transportation device which reduces the space needed to accommodate a roll paper buffer mechanism unit and paper detection unit, and to reduce poor electrical contact in the contact part of the paper detection unit. The roll paper transportation device has a paper detection unit 8 for detecting the presence of roll paper 5, and a buffer mechanism unit 7 for absorbing variation in roll paper tension in order to keep the roll paper 5 tension less than or equal to a predetermined level. The buffer mechanism unit 7 forms a housing unit 16 for housing at least part of the paper detection unit 8 in a common area disposed in the buffer mechanism unit 7 enabling the paper detection unit 8 and buffer unit 7 to operate in unison without interfering with the operation of the other.

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 an apparatus f or winding careless and soft-core rolls (11), of film materials (10). The film (10) is made to advance, at differentiate speeds (S1, S2), between a first and a second drawing unit (12, 21) making the film (10) to perform a floating loop (19). The film (10) is fed in a controlled way, making it adhere to a grooved corrugating drum (22) by an air jet (29) to corrugate cross corrugations in the film (10) while it is being wound up; the corrugations of the film (10) traps air and prevents the implosion of the roll (11). A programmable electronic unit (32), controls the drawing units (12, 21) in relation to control signals (E1, E2) related to the feeding and winding up speeds (S1, S2) of the film (10), and in relation to a control signal supplied by a sensing device (28) for detecting the position of the floating loop (19).

Abstract: In one aspect, a method of correcting a loosely wound supply roll to be used with a label applying machine is described. The method includes providing a supply roll having a material web wound thereon, the supply roll mounted on a supply roll spindle such that the material web is aligned with an intake of a labeling mechanism on the label applying machine. The method further includes mounting a moveable web guide to apply pressure to the material web being supplied to the labeling mechanism, wherein the web guide includes an encoder. The method further includes determining the tension of the material web wound around the supply roll using the movable web guide and the encoder. Further still, the method includes adjusting the tension of the material web wound around the supply roll if the material web is determined to be too loosely wound about the supply roll to provide adequate tension to the web as the web leaves the supply roll.

Abstract: The invention relates to an apparatus for maintaining a constant tension on a web of material, in particular on a label web used in a labeling machine (E), said apparatus comprising: a stationary rotary axle device (30) with a geometric rotational axis (M) and a tension compensation device (40) rotatable from a starting position about said rotational axis (M) of said rotary axle device (30), said tension compensation device (40) comprising a force unit (60) which exerts a force on the tension compensation device (40) that counteracts the rotational movement of the tension compensation device (40) from the starting position. It is further provided that the force applied by the force unit (60) is a linear force acting on the tension compensation device (40) at a force application point (65) with a radial spacing to the rotational axis (M) of the rotary axle device (30).

Abstract: In a tape drive during a transition to a stand-by mode, a tape is wound under control of a processor (e.g., CPU) until duration of a time interval between moments when rotational positions of the reels change decreases to a pre-determined threshold. Thereafter, in the stand-by mode, the processor switches control over the tape drive to a low-power logic circuit (e.g., PLC) and enters a power-save mode.

Abstract: A method and an apparatus for winding coreless and soft-core rolls (11), of film materials (10). The film (10) is made to advance, at differentiate speeds (S1, S2), between a first and a second drawing unit (12, 21) making the film (10) to perform a floating loop (19). The film (10) is fed in a controlled way, making it adhere to a grooved embossing drum (22) by an air jet (29) to emboss cross corrugations in the film (10) while it is being wound up; the corrugations of the film (10) traps air and prevents the implosion of the roll (11). A programmable electronic unit (32), controls the drawing units (12, 21) in relation to control signals (E1, E2) related to the feeding and winding up speeds (S1, S2) of the film (10), and in relation to a control signal supplied by a sensing device (28) for detecting the position of the floating loop (19).

Abstract: A variable representing runnability of a paper web to be manufactured with a paper machine or processed with a finishing apparatus is measured and the speed difference between operational groups of the paper machine and/or the finishing apparatus is adjusted on the basis of the measurement of said variable such that the moisture profile of the paper web is measured substantially along the entire width of the paper web, the minimum and maximum values for moisture are defined on the basis of the moisture profile, a drawing window describing the allowable tension to be directed to the paper web is defined, the lower and upper limits of the drawing window being defined on the basis of the minimum and maximum values for moisture, and the speed difference between the operational groups is adjusted so that the paper web tension is within the range defined by the drawing window.

Abstract: Methods and apparatus to reduce or eliminate misalignment, wrinkles, and creases in coated web product. A relationship between web outgassing pressure and surface roughness of the web and web transporting rollers is developed. This relationship allows for the control over the web outgassing pressure. The ability to adjust the web tension pressure, as well as the selection of web transporting rollers with prescribed surface characteristics, allows an operator to control the degree to which the web floats over or tracks the web transporting roller. A controller, in response to pressure and tension sensors, can also provide dynamic, closed-loop control of the entire system.