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Tech Tip for the week of June 29, 2009
Try replacing your grooved rolls with concave profiled rolls.


Grooved rolls performance can be very limited for removing wrinkles. In fact, some webs will conform to the grooves profile and wrinkles and web distortions will result.

Concave profiled rolls are sometimes referred to as reverse crowned rolls due to the fact that they have a profile exactly opposite crowned rolls. The rolls diameter is greater towards the edges and less in the center. The larger diameter towards the rolls edges will “walk” the webs edges away from the center (assuming the web is in traction with the reverse crown roll face). This will help to eliminate wrinkles.

Try it with one roll and see what your experience tells. If the concave profile works well for you, then often times adding this profile to several rolls in your machine yields the best result.


Written By: Jeffrey Damour, Sales Manager, 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.


Converter Accessory Corporation
201 Alpha Road
Wind Gap PA 18091

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

cac@epix.net

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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