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Score slitting is accomplished by loading a round scoring knife blade against a hardened steel anvil roll. The web is passed through, under the scoring knife blade, between the knife and the hardened steel anvil roll. The score knife blade(s) are loaded with air or other mechanical means with enough force to either score your web or to slit completely through your web.
Eventually, the hardened steel anvil roll, itself, may become scored. Grooves may form in the anvil roll over time from the score blades cutting against the rolls face. This degradation of the anvil roll face will cause defects in your slit and may cause frequent wear or damage to your slitting blades.
You may be able to have your hardened steel anvil roll's surface ground to remove the grooves. However, keep in mind, the hardened depth from the rollers surface may eventually be removed from repeated grinding and you may start to see the score grooves appear more frequently. This is because by grinding the outside diameter of the roller you may be removing the hardened surface and your score blades will be loaded against softer steel.
You may have to replace the hardened steel anvil roll to improve your slitting process. Typically these rolls are manufactured with a support roller and hardened steel anvil sleeve(s) mounted on top of that support roller. This type of construction allows for replacement of the sleeves, when necessary, instead of replacement of the whole roll.
Written By: Jeffrey Damour, Sales Engineer, Converter Accessory Corporation, Wind Gap, PA, Phone - 800-433-2413
**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.
201 Alpha Road
PO Box 188
Wind Gap PA 18091-0188
Phone (800) 433-2413 -(610) 863-6008
Fax (800) 709-1007 - 610) 863-7818
What is Web Handling?
Web Handling is the science, engineering and equipment necessary to successfully transport a continuous flexible material through various processes without defect. Enhancing Web Handling with proper equipment will ensure materials are processed at their maximum efficiency, allowing the process to generate maximum profits.
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