Contributor

Web handling and winding specialist Timothy J. Walker has 25+ years of experience in the field. He is President of TJWalker+Assoc. and has helped over 100 companies in processes involving paper, film, and foil-based manufacturing...more

Basics: What Are the Key Process Variables of Winding?

Basic definitions of tension, nip, and torque help describe what variables are important when winding a roll.

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What impact can temperature change have on a roll?

The best rule of thumb is to avoid heating or cooling winding or wound rolls. Keep a roll's temperature stable.

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Eliminating Tin-Canning Rings on Your Wound Rolls

The elimination of roll rings that simulate rings on a tin soup can is a perennial problem for web handling experts. This list of possible solutions might work for you.

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Web Handling | To Break or Not To Break--What is the Tension?

Determining at what tension a web will break or deform comes down to a material's property.

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Web Handling Q&A on Lateral Web Movement

In the field of web handling, debates still rage over whether a baggy web tracks to its tight or loose side. This answer contributes to the discussion and may help settle the score.

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WebHandlersQuiz #19: Advantages of a Nipped or Gap-Controlled Roller

WebHandlersQuiz #19: What are the three advantages of using a nipped or gap-controlled roller ahead of winding?

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Workshop on Nipped Systems & Laminating

A workshop focusing on nipped rollers offers a better understanding of the underlying engineering principles and design considerations that lead to improved profitability in your value-added web processing operations.

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WebHandlersQuiz #18: Which Rolls Tighter—Paper or Film?

Which—paper or film (with equal dimensions and winding conditions)—will likely have higher internal roll pressures?

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WebHandlersQuiz #17: Winding at Constant Torque

If you center wind at constant torque, what is the percent change in tension if the roll diameter changes from 100 mm to 400 mm?

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WHQuiz Answer #14 - Web Wrinkling and Deflection (2)

WebHandlersQuiz 16: Spreading - Name a spreader or anti-wrinkle roller that does NOT have a rubber surface?  Answer...

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