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Controlling shear slitting overlap will help your bottom line.

Shear type slitting incorporates a top knife assembly, which usually incorporates a dish blade side loaded against a thicker bottom knife assembly, which is usually driven. Shear slitting is accomplished by the top knife assembly being actuated downward, then sideways to engage the bottom knife with some amount of side pressure. The cutting depth or amount of overlap of the top knife to the bottom knife is key in any slitting operation. This cutting depth must be deep enough to properly slit your web and always prevent knife jump (when the top knife blade "jumps" from the side load position to riding on top of the bottom knife). However, excessive cutting depth will reduce blade life, cause a lot of slitting dust and possibly distort the slit edge of your web.

Bottom line - you should determine and document the optimum cutting depth for your shear slitting operation. This cutting depth should be the least amount necessary to properly slit your web.






**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.



Converter Accessory Corporation
201 Alpha Road
P.O. Box 188
Wind Gap PA 18091-0188

Phone (800) 433-2413 or (610) 863-6008
Fax (800) 709-1007 or (610) 863-7818

sales@converteraccessory.com

www.converteraccessory.com


      
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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