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We have discussed in past articles that most converting machines can be divided into three operational areas; unwind zone / process zone / rewind zone. Keeping in mind your machine may have several process zones, each separated by driven nip or s-wrap stations.
Often times, when I'm in the field, I see several different types of ant-wrinkle rollers being utilized in one operational zone. This may be because through the years different types of anti-wrinkle rollers were purchased and tried and to make sure each is taken advantage of; they are all put to use.
If you are mixing anti-wrinkle rolls in your machine and it works for you - don't change. I'm a firm believer in "if it ain't broke, don't fix it". However if you are having wrinkling, tracking and / or web distortion issues, the culprit may be your anti-wrinkle rolls or more accurately - your anti-wrinkle rolls "working against" each other.
Different types of anti-wrinkle rolls each operate using their own principals of wrinkle removal. Mixing anti-wrinkle rolls will many times cause them to fight each other and cause undo strain on your delicate web. Do not mix anti-wrinkle devices. Try to standardize on one style of anti-wrinkle roll on one machine or at least one style of anti-wrinkle roller per operational zone. Several of the same type of anti-wrinkle roll may be required per zone.
**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.
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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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