Roller Alignment | |
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Proper idler roller alignment is critical to any converting operation like printing, slitting, metalizing, coating, laminating, drying or other web processing application. As an equipment manufacturer to the converting industry, CAC sees a broad array of applications from the thinnest foil to thick rubber. Any web is negatively effected by roller misalignment (web wrinkling, for example). To what degree depends on the webs built in characteristics, like stability and stiffness.
One thing is for sure. The web handling principle; a web will seek to be perpendicular to a roller with which it has traction in it's entry span to that roller will apply. What this means is any misalignment between rollers will cause web guiding problems and possibly web wrinkling problems due to inherent stresses placed on the web when it moves out of its intended running plane to maintain the web handling principle. Converters of paper, film, foil, textiles and nonwovens should check roller alignment as part of scheduled maintenance. This alignment can be checked with devices as simple as pi tape measure for course baseline values or as complex as laser alignment systems for extremely accurate comparison values. The level of accuracy for roller alignment required for each specific application will vary, greatly, depending on many factors including web characteristics, the process itself, web tension, web speed and acceptable deviation levels.  Jeff Damour | |
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**DISCLAIMER - A great deal of time has been invested in the development of our weekly tech tips. To the best of our knowledge, they are accurate. It is up to the user to verify all results. THE AUTHOR ASSUMES NO LIABILITY CONNECTED WITH THE USE OF THIS INFORMATION OR THE RESULTS OBTAINED FROM IT. | |
