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What Is the Right Tension?

(Web Lines)

November 30, 2009, Of all the questions about web handling, the most-asked question has to be: What is the right web handling tension for my product? This is a great question Of all the questions about web handling, the ...

Narrow Web Transducer Measures Light/Heavy Tension

(News Eclips)

May 27, 2009, Dover Flexo Electronics releases the NW Narrow Web line of tension transducers to measure light to heavy running tension for printing presses and converting machinery with 6–20-in. web widths. ROCHESTER, ...

WEB EXCLUSIVE: Tension Control: Dancer Systems Defined

(Archive)

April 15, 2009, A well-built, well-installed dancer working with a proper control can provide a flexible closed loop means of controlling tension in both unwind and rewind applications. One of the challenges in working ...

Amplify the Tension Signal

(News Eclips)

January 20, 2009, Dover Flexo Electronics offers the TrueTension TI17C amplifier, which takes the tension signal to a PLC, drive, or controller when connected to tension transducers ROCHESTER, NH | Dover Flexo Electronics ...

Monitor Tension in Any Zone

(Tension)

December 17, 2008, The TrueTension TI17C indicator with Quik-Cal push-button zero and calibration is a single-channel tension transducer interface (amplifier) for monitoring tension in any zone on web processing machinery ...

Sensing Roll Combines Strain Gauge/Tube

(Tension)

December 17, 2008, The TNT-Series web tension sensing roll combines a sensitive strain gauge... The TNT-Series web tension sensing roll combines a sensitive strain gauge with a durable, high performance, lightweight aluminum ...

Tension Control

(Tension)

November 30, 2008, Controller Offers Ethernet Connection Designed for precise closed loop tension control, the Spyder is capable of controlling web tension in unwind, rewind, Controller Offers Ethernet Connection Designed ...

Idler Roller Bearings: Living the Good Long Life?

(Web Lines)

June 30, 2008, ... line or slitter/rewinder. Note If you run an extremely high-tension web, like steel or an extra-thick paper product, you likely never think about roller drag, so stop here. People look at me funny ...

Montalvo Offers Free Data Sheet For Advanced Dancer Roller

(News | New Products)

June 15, 2008, GORHAM, ME | The Montalvo Corp. is offering a free data sheet for its new D-3400 dancer controller, which was developed to provide accurate, repeatable tension control for unwind applications that use ...

Web Lines: The Spin on Idler Roller Testing

(Web Lines)

May 31, 2008, ... roller performance. If you have a high-tension process, giving up a few pounds to your idler rollers is okay. If you have a scratch-insensitive product, a few rollers that fail to spin may not affect your ...

Roll Winding Dynamics

(Web Handling)

January 31, 2008, ... So no matter how challenging the material, rolls must be wound with the right degree of hardness, rolls must look good, and they must be of the right shape and consistency. Slit width, winding tension, ...

Two-Roll Heated Laminator with Unwind/Rewind

(Archive)

November 25, 2007, ... roll. The six-station unwind section accommodates 270 mm-650 mm wide x 600 mm diameter rolls mounted on cantilevered air shafts. Individual unwind tension is controlled through an ultrasonic diameter measurement ...

Dancer Controller

(Archive)

October 25, 2007, ... transferable memory cards, RS-232 interface to computer, and industrial standard fieldbus connections. The controller was developed to provide accurate, repeatable tension control for unwind applications. ...

In Search of Tension Isolation

(Magazine)

September 30, 2007, In web handling, one of the myths told most frequently is that of the independent tension zone, protected from other tension zones by the protective powers of the tension isolation. Like most myths, we ...

Support Your Rollers

(Magazine)

August 31, 2007, ... should begin with a known parallel reference position. Rigid | Rollers should hold their position and alignment through tension and process changes and over the life of the equipment. Serviceable | Rollers ...

How to Drive a Winding Roll

(Web Lines)

November 30, 2006, ... have more trouble with larger build-up ratios. A center winder’s torque and motor size will be a direct function of final tension and radius. Also, center winding transmits the core-applied torque to all ...

Dancer Rollers: Trust but verify

(Web Lines)

October 31, 2006, In last month’s tension quiz, I gave out five points if your process had a calibrated tension transducer roller. Those of you with dancer rollers might have wondered why you didn’t get any points. Why ...

Web Tension: A Pop Quiz

(Web Lines)

September 30, 2006, Today's column is a pop quiz on web tensioning. Feel free to work as a team on the answers. If you score poorly, don't worry, but it's worth your while Today's column is a pop quiz on web tensioning. Feel ...

Automatic Roll Change

(Magazine)

August 14, 2006, ... is started. But what if this is not done? The programmable logic control (PLC) system can calculate this after a short delay. After a new roll is started and tension control is taken over by diameter calculator, ...

The Pressure of Winding Rolls

(Magazine)

April 26, 2006, ... tensioned web is wrapped around a cylinder, the radial pressure pushing downward is equal to the T in PLI divided by the radius in inches (P=T/R). If a second layer is placed on top of it, it seems the ...

Free E-Seminar For Taper Tension

(Archive)

January 07, 2006, MAGPOWR will host a live e-seminar on Wednesday, January 25, 2006, on taper tension. PRESS RELEASE OKLAHOMA CITY, OK—Update your knowledge on tension control in a free online seminar sponsored by MAGPOWR. ...

Converting Rx for Bowed Rollers

(Web Lines)

October 30, 2005, ... (length, width, thickness, modulus, tension) will need more traction forces to redirect the web. The total web expansion will fall short of theoretical spreading if the traction forces are too low. Air ...

Concave Rollers Pros & Cons

(Magazine)

June 29, 2005, ... have increased strain and tension. The laterally different tensions induce a moment (or torque) on the web. The moment creates a slight inward bend in the web. The web’s bent shape conflicts with the parallel ...

Get Out of the Scroll Business

(Magazine)

February 27, 2005, ... The web’s outside will see increased tension. In many cases, the web springs back with no induced curl, but there are limits. The amount of stress change from forming a curve is directly proportional ...

Why Tension?

(Magazine)

January 30, 2005, Why is tensioning such a crucial first step? What are the benefits of a well-tensioned web? What is the right amount of tension for your product? Don’t slack off now...keep reading for these answers and ...

Web Tension 101

(Magazine)

November 29, 2004, Typically, tension is measured in PLI (pounds per linear inch) in the US. If you know PLI and you want to know total tension applied to the web, multiply PLI times the width of the material in inches. ...

Mechanics of Tension Control, Part II

(Archive)

November 29, 2004, For this basic tutorial in the mechanics of web tension control, tension is defined as the force applied to a continuous web of material in the machine direction. For this basic tutorial in the mechanics ...

10 Tips on Antiwrinkle Rollers

(Magazine)

September 29, 2004, ... for years, I'm still amazed to see it work and get a process back up and running. The biggest limitation of this trick is working with width changes. A concave roller mechanism works by concentrating tension ...

When Rollers Fight, Webs Lose

(Archive)

March 31, 2004, ... for every foot of span length. This “rule of thumb” will overestimate tram-related tracking errors for wide, thick, short span, and high-modulus webs. The tension variations from tram error are directly ...

Magpowr to Conduct Free Online Tech-Tips Seminar for Torque and Tension Control

(News | New Products)

November 09, 2003, ... Intl. co.) reports it will conduct a one-hour e-seminar via the Web on November 20, 2003. This first short, technology-focused seminar, says the web tension system manufacturer, will cover the most recent ...