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WHQuiz Answer #11 - Intermediate Guiding

(Web Handling)

February 22, 2012, WebHandlersQuiz 11: Guiding - For automatic guiding in the middle of a process, which is preferred – A steering type guide or a displacement type guide?  Answer... WebHandlersQuiz 11: Guiding - For ...

WHQuiz Answer #12 -Web Tracking

(Web Handling)

February 22, 2012, WebHandlersQuiz 12: Web Tracking – In a vertical span, which will cause the web to track off center more, a roller tram or level error?  Answer... WebHandlersQuiz 12: Web Tracking – In a vertical span, ...

WHQuiz Answer #13 - Web Wrinkling vs. Speed

(Web Handling)

February 22, 2012, WebHandlersQuiz 13: Wrinkling - If you see wrinkles at low speeds, but the wrinkles go away at higher speeds, what is the most likely reason?  Answer... WebHandlersQuiz 13: Wrinkling - If you see wrinkles ...

WHQuiz Answer #14 - Web Wrinkling and Deflection

(Web Handling)

February 22, 2012, WebHandlersQuiz 15: Wrinkling – If a roller is deflecting into a bowed shape due to gravity, which direction is it best NOT to approach that roller if you don’t want to wrinkle: vertically from above, ...

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

(Web Handling)

February 22, 2012, WebHandlersQuiz 16: Spreading - Name a spreader or anti-wrinkle roller that does NOT have a rubber surface?  Answer... WebHandlersQuiz 16: Spreading - Name a spreader or anti-wrinkle roller that does ...

Web Lines | Test Your Web Handling Knowledge

(Web Handling)

February 14, 2012, ... rollers in a process likely will have the larger diameter? 8. Traction—When is a nipped roller needed on a driven roller separating two tension zones? 9. Nipped Rollers—What is a simple measurement ...

Web Handling Workshops from TJWA & Optimation

(News | New Products)

January 26, 2012, ... of what is web handling, get your questions answered. • Nipped Systems and Laminating—September 11-12. Understand how to create uniform pressure, wrinkle-free nipping systems and curl-free laminates. ...

Web Lines | A Rant from Tim Walker

(Web Handling)

December 04, 2011, ... tractor. That’s why the dashboard reads miles per hour. But, my dear equipment supplier, when you get out of your car and get to the office or shop floor and build your winder, slitter, or nipped process, ...

Web Lines: Take the Laminator Quiz

(Coating/Laminating)

October 16, 2011, ... (c) does it create a small wrap angle on the nip roller? 5 pts. 18. Have you measured or estimated nipping roller deflection from end loading and avoid entering the nipped roller with 90-deg wrap angles ...

Do You Want Nips with That? Part 2

(Winding Unwinding Rewinding)

April 30, 2011, ... be opened once steady line speed is reached. Q Why are nip rollers a popular choice to create drive roller friction? A Mainly, nips are simple to understand — pinch it, pull it. We can relate to nipped ...

Web Lines: Would You Like Nips with That?

(Winding Unwinding Rewinding)

March 31, 2011, ... Every day, dumpsters and truckloads around the converting world are filled with waste generated due to unnecessary nipped rollers. Nipped rollers are a double-edged sword, creating high pressure for value-adding ...

Web Lines: Q&A on Roller Deflection

(Web Handling)

October 31, 2010, ... that are sensitive to gap or engagement variations. A well-designed nipped roller system will have larger-diameter rollers, rubber-covered rollers, or both to compensate for the pressure variations that ...

Web Lines: Web Length per Roller Revolution=?

(Editorial)

September 30, 2010, ... of web tension. When solid nipped rollers rotate, how much web do they feed forward per revolution? This question opens up one of the biggest cans of worms in web handling. Read on if you dare. If ...

Web Lines: Mission-Detect Nip Variations

(First Glance)

August 31, 2010, ... is to determine a repeatable, yet inexpensive methodology to assess whether any nipped process meets our goal of crossweb uniformity or has fallen to the forces of variations.” Nipped processes are under ...

Web Lines: How To Control Roller Nips

(Web Handling)

July 31, 2010, ... want to take the need for skill out of the repeatability of the compression. Nipped rollers, used in many processes, rely on high pressure created by rolling a web between two pinching rollers. In nipping ...

Web Guiding | Lateral Motion Causes

(Web Lines)

March 31, 2010, ... still see shifted layers if care is not taken to control air lubrication (usually prevented with nipped winding) and cinching (see “Belt Tightening Gone Bad,” PFFC, February 2003, p24, and March 2003, ...

AIMCAL Offers Nip Roller Workshop & Drives Course

(News | New Products)

January 12, 2010, ... J. Walker and Dr. Kevin A. Cole. The workshop is directed towards technical employees of any level with a need to understand the fundamentals of nipped roller systems. While some engineering theory and ...

Playing the Wrinkle Blame Game

(Web Lines)

June 30, 2009, ... the roll), but if you turn a crease-free and wrinkle-free web into waste, cast not the first stone. I've seen at least one case where wrinkle waste was blamed on the supplier, but it was caused by a nipped ...

Who's Driving This Nip

(Web Lines)

November 30, 2008, What is the best way to drive a set of nipped rollers? Two rollers and two drive options (driven or not) lead to four options. To make this discussion What is the best way to drive a set of nipped rollers? ...

Shifty Answers to Nip-Induced Tracking

(Web Lines)

October 31, 2008, ... | Will the web always track to the high load side of a nipped roller system? Answer | Not necessarily. A slipping nip, such as a nip grabbing an oiled metal web, may shift the web away from the high load ...