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

WHQuiz Answer #14 - Web Wrinkling and Deflection

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, vertically from below, or horizontally?  Answer...

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WHQuiz Answer #13 - Web Wrinkling vs. Speed

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...

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WHQuiz Answer #12 -Web Tracking

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...

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WHQuiz Answer #11 - Intermediate Guiding

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...

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WHQuiz Answer #10 - Laminate Curl

WebHandlersQuiz 10: Laminating – If a two-layer laminate product curls to the top layer in the machine direction, which would reduce the curl: increase or decrease the top layer pre-laminate tension?  Answer...

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WHQuiz Answer #8 - Nipped Driven Rollers

WebHandlersQuiz 8: Traction – When is a nipped roller needed on a driven roller separating two tension zones?  Answer...

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WHQuiz Answer #9 - Nip Uniformity

WebHandlersQuiz 9: Nipped Rollers - What is a simple measurement to determine if two nip rollers are pressing together uniformly?  Answer...

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WHQuiz Answer #7 - Large Diameter Rollers

WebHandlersQuiz 7: Rollers – Which rollers in a process will likely have the largest diameters? Answer...

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WHQuiz Answer #6 - Roller Alignment

WebHandlersQuiz 6: Rollers - What is a reasonable specification for roller alignment in mm/m, milli-radians, or mils/in? Answer...

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WHQuiz Answer #5 - Draw Control Pros/Cons

WebHandlersQuiz 5: Tension (Draw) Control – Name one advantage and one disadvantage of draw control (a.k.a. as speed ratio control)? Answer...

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