Tension

Brake Handles More Torque

Published: July 01, 2010

The Global Brake Model F, originally rated to deliver up to 250 lb-ft of torque, now can be placed in applications in which up to 325 lb-ft of torque

Control Tension Precisely

Published: June 01, 2010

The X-3400 rewind tension controller works to control the slippage of differential winding shafts and controls the torque transferred to the cores. The

Brake Has Many Benefits

Published: May 01, 2010

The V-400 brake is designed for use in upgrading Martin rollstands. Designed to fit in a very small space, the high-performance brake reportedly offers

Get Accurate Tension Reading

Published: February 01, 2010

The EasyView tension indicator is a compact, low-cost, general-purpose web tension amplifier with display. Indicator is powered by 24 volts DC and amplifies

Web Lines: What Is a Tension Zone & How Many Are Needed?

Published: January 01, 2010, By By Timothy J. Walker Contributing Editor

Tension and speed control are the two most fundamental purposes of any web handling system. Speed control is easy for most people to understand, since

Why so Tense?

Published: January 01, 2010, By Edited by Nsenga Byrd Thompson, Assoc. Editor

Putney Paper is located on the same site where papermaking has been a continuous process since 1818. In addition to its long-standing mill, Putney has

What Is the Right Tension?

Published: December 01, 2009, By By Timothy J. Walker Contributing Editor

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

Get a Grip on Your Web

Published: November 01, 2009, By By Pete Eggen, Webex Inc.

Whether a converter needs to isolate tension at various zones in a web line, reduce web slippage over a roll, or pull the web at increased speeds and

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

Brakes Feature Heat Dissipation Friction Discs

Published: December 18, 2008

V-Series brakes feature high heat dissipation friction discs combined with patented “no-tools” friction modules for quick and easy pad changes

Sensing Roll Combines Strain Gauge/Tube

Published: December 18, 2008

The TNT-Series web tension sensing roll combines a sensitive strain gauge...

Wrinkle Removers

Published: December 01, 2008, By By Edward Boyle, Contributing Editor

For most printers and converters, tension controls are like the utilities coming into your home or office the only time you give them any thought is when

Tension Control

Published: December 01, 2008

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

Web Lines: Thinking About New Equipment?

Published: February 01, 2008, By By Timothy J. Walker Contributing Editor

A new year often brings new budgets and thoughts about new equipment. If you are lucky enough to be handed a project to buy new converting equipment,

Get a Grip: Driving Your Web

Published: January 01, 2008, By By Timothy J. Walker Contributing Editor

In my October 2007 column, In Search of Tension Isolation, I myth-busted the belief that a high traction driven roller can completely isolate one tension

In Search of Tension Isolation

Published: October 01, 2007, By By Timothy J. Walker Contributing Editor

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 want to believe, but alas, scientific reason is the myth buster.

Baggy Webs: Part 4 Minimizing

Published: August 01, 2007, By Timothy J. Walker, TJWalker & Assoc. Inc.

What does minimizing a baggy web mean? Two things. First, we would like to minimize the level of bagginess in our webs. Second, we would like to minimize the waste associated with running the inevitable baggy web in our processes. To minimize the creation of baggy webs, we must take on their causes.

Going Thin

Published: June 30, 2007, By By Keith Fordham Ashe Converting Equipment

Thinner gauge materials impact both on operating costs and the environment. The difficulty with going thin is that problems such as wrinkling, air entrapment, and tension control, and various other problems typically associated with material profile perturbations, such as gauge band variations, can become magnified when processed on some types of slitter/rewinders and other converting machinery.

Baggy Webs: Part I Nightmares

Published: April 01, 2007, By By Timothy J. Walker, TJWalker & Assoc. Inc.

This is the first of four columns on baggy webs, starting with understanding the problems they create. To most converters, the ideal web is one that is

Twist & Shout

Published: January 01, 2007, By By Timothy J. Walker TJWalker & Assoc. Inc.

A wrinkle is the web’s equivalent of a shout—stop it, you’re hurting me! To avoid your web shouting at you, think about how to apply uniform tension across it.

Dancer Rollers: Trust but verify

Published: November 01, 2006, By Timothy J. Walker, TJWalker & Assoc. Inc.

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 am I “dissing” dancers?

Web Tension: A Pop Quiz

Published: October 01, 2006, By By Timothy J. Walker TJWalker & Assoc. Inc.

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

Upgrade the Old, Bring in the New!

Published: September 01, 2006, By By Nsenga Byrd Thompson Associate Editor

Noven Pharmaceuticals may not be a household name, but the patented creation of this 500-employee company helped revolutionize the way people receive

You're Too Tense!

Published: May 31, 2005, By Carrie Cleaveland, Assistant Editor

When planning to purchase tension controls, there is a lot for the converter to consider. "It's not just as easy as buying brand X controller and throwing it on your system and away you go." Here are some of the important questions to consider.

Drawing Conclusions: Part 1

Published: April 30, 2005, By Timothy J. Walker TJWalker & Assoc. Inc.

In planning the tension control for any web line, there are only three options: tension control, torque control, and draw control. Between any two rollers or rolls controlled by a motor, brake, or clutch, you have to select one of these three choices.

Why Tension?

Published: January 31, 2005, By Timothy J. Walker, TJ Walker & Assoc., Inc

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 more.

Web Tension 101

Published: November 30, 2004, By Jeff Damour, Converter Accessory Corp.

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. If you know total pounds of tension applied to the web and you want to know PLI, divide the total pounds of tension across the web by the width of the web in inches.

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