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Web Handling & Converting

Blogmaster: Dr. David Roisum

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War Stories in Web Handling

22

Baggy Web Conversation

Posted by David Roisum on November 22, 2011
The following is historical fiction.  One where certain essential details are accurate, but the ‘conversation’ has been rewritten to protect the guilty. Dear Dr. Roisum, I was your student in a Converting School back in 20__. We now have a difficult web-handling problem caused ...

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Posted in: Materials, Measurement, Problem Solving, Rollers, Spreading, War Stories in Web Handling, Winding, Wrinkling & Flatness
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06

Baggy Web Survival Strategy

Posted by David Roisum on September 6, 2011
The first time you get baggy material, send the roll back to the supplier. What will they do? They will pay the claim. What will they not do? Fix the problem. The second time you get baggy material, try to find some measure of bagginess and a threshold of pain. Candidates include roll hardness...

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Posted in: (Other) Converting, Problem Solving, War Stories in Web Handling, Web Manufacturing, Wrinkling & Flatness
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23

Load Cell Zero – Three Strikes and You are Out

Posted by David Roisum on September 23, 2010
Load Cell Zero – Three Strikes and You are Out
When a load cell does not report zero properly the first time, such as when the web is off, an attentive maintenance department will re-zero and recalibrate the tension system. If it happens a second time, maintenance may be inclined to repeat the recalibration. If it happens a third time, it is p...

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Posted in: Maintenance, Measurement, Tension/Drive Control, War Stories in Web Handling
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22

Speeding Warnings and Load Cell Tension Zero

Posted by David Roisum on September 22, 2010
Speeding Warnings and Load Cell Tension Zero
I pride myself on being a safe driver. I have driven the better part of a million miles with no accidents (for which I contributed any fault) and only one ticket (I was caught in a honest-to-goodness speed trap in a small Missouri town on my motorcycle). However, a recent third warning for speedin...

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Posted in: Maintenance, Measurement, Problem Solving, Tension/Drive Control, War Stories in Web Handling
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17

Roll-to-Roll Vacuum Deposition of Barrier Coatings

Posted by David Roisum on September 17, 2010
Roll-to-Roll Vacuum Deposition of Barrier Coatings
A new book by one of AIMCAL's favorite blogmasters, Dr. Charlie Bishop, is hot off the press. Heck, its even got "roll" in the title so we better take notice. Roll-to-Roll Vacuum Deposition of Barrier Coatings presents a practical guide to provide any reader with the basic information to help them...

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Posted in: Books, Current Affairs, New & Noteworthy, War Stories in Web Handling
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Blogmaster

David Roisum photo

Dr. David Roisum

Dr. Roisum is a well-known authority in the area of web handling and converting. He has authored seven books, including Winding, Rollers and Web-Handling and has coauthored or edited several others. He was a technical editor for Converting Magazine with a monthly column entitled "Web Works." An accomplished professional speaker and instructor, Roisum has been praised for his skill at translating highly technical information into a common sense practical reference. Dave has been honored by TAPPI with their Finishing & Converting Division Award, Thomas W. Busch Prize and Finest Faculty awards and is a TAPPI Fellow. Dave received his Ph.D. from the Web Handling Research Center where he later became an Industrial Advisory Board member.

Dave has worked for the Beloit Corporation as a designer of winding machinery and later as a manager of research, and for Kimberly-Clark as a converting expert serving all business units. He is now a principal of Finishing Technologies Inc., providing consulting services to more than 300 clients who convert or manufacture: paper, film, foil, nonwovens, textiles and many other materials. He has accumulated much practical experience working in nearly 1,000 plants over the course of more than three decades.