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Don't Get Bent out of Shap

(Magazine)

January 31, 2007, ... causes wrinkling. You’ll find that modeling of bending and wrinkling is quite complex, but thankfully, there is commercially available software to do this math for you. You don’t need these advanced ...

How to Drive a Winding Roll

(Web Lines)

November 30, 2006, ... nip can get caught ahead of the nip point in the roll’s topmost layer. As the trapped air bubble grows, it will create wrinkling in thinner products. Porous products don’t face this potential surface winding ...

CPP: Season Two

(Magazine)

September 30, 2006, ... machine; how rollers affect tension; and wrinkling and other important behaviors. Selecting a Control System Integrator — 9:00-9:50 A.M. Automation in today's industrial environment can be a high-risk, ...

Whatever Floats Your Web

(Magazine)

May 30, 2006, ... curling or wrinkling. Except for nonvacuum processes, your web is going to interact with the air around it. Use these tricks, and float your web to your advantage. Timothy J. Walker has 20+ ...

AIMCAL's Applied Web Handling Conferenc

(Archive)

April 09, 2006, ... control functions involving web handling and converting. The conference is open to both members and non-members. A tabletop reception will take place Monday. An optional short course on wrinkling, tapping ...

Take Control

(Magazine)

January 30, 2006, ... tested it in liquid nitrogen for flexibility. One of the keys to processing film materials is getting total control over tension and heat. Too much of either can cause wrinkling. The envelope cannot have ...

The Secret Strain

(Magazine)

December 30, 2005, ... perfect. Tensioning controls the average tension or strain, but it’s important to think about crossweb tension or strain variations. Many problems come from crossweb variations, such as wrinkling and lateral ...

New Products, Part 1

(Magazine)

September 29, 2005, ... speed. Hands are smaller, enabling a smoother palletizing job with less creasing and wrinkling of paper sacks, company says. Web Guide Retrofit Simplified Fife Corp., a Maxcess Intl. co. , ...

A Communication from the PLACE Div. of TAPPI

(Magazine)

April 29, 2005, ... roll and their use in applications. To understand why webs wrinkle and why spreader rolls work, one must understand the most important web handling principal concerning wrinkling: A web will seek to ...

Why Tension?

(Magazine)

January 30, 2005, ... will reduce lateral bending and shifting and improve a web’s ability to resist wrinkling temptations. How much tension is right? Too much tension is easy to define. Don’t pull so hard you will break ...

New Products

(Magazine)

January 30, 2005, ... and rewinding in web and strand applications. Strain gauge and LVDT load cells measure the product tension, reportedly eliminating problems such as feathering, breaking, wrinkling, and blocking. Software ...

New Product Digest, Part 2

(Magazine)

December 30, 2004, ... times; and a proprietary roll coating that reduces web wrinkling and inhibits oxidation of the treater roll. Press Provides Precision Printing Comexi America, Feeding Hills, MA; 413/789-3800; comexi.com ...

Who Likes Film?

(Magazine)

December 30, 2004, ... with waste—waste from scratching, winding, and wrinkling. Yikes! Maybe process people don’t like films. But since customers and product designers like films, process people better figure out a way to deal ...

Web Tension 101

(Magazine)

November 29, 2004, ... zone. As a roll is rewound, each layer builds up compressive forces that can cause inner layers, toward the core, to buckle. Wrinkling, starring, and crushed cores will occur if these compressive forces ...

10 Tips on Antiwrinkle Rollers

(Magazine)

September 29, 2004, ...  Don't use an antiwrinkle roller if a standard idler will solve the problem. My first approach is always to try and resolve wrinkling by optimizing standard idler rollers. Remember that friction, wrap angle, ...

Can This Lamination Be Saved?

(Magazine)

August 30, 2004, ... rollers. Roller ridges may not prevent delamination, but they can burp through small feed variations, preventing the catastrophe of web wrinkling or wrapping rollers. FYI, in August my wife and I completed ...

The Signs of Shear Wrinkle

(Magazine)

July 31, 2004, ... of sign language. It's saying, “Oh, I'm shifting to the right (or left) in this span,” or “Ouch, I'm shifting so much I'm wrinkling on this roller.” What does the sign language of the web look like? It' ...

Shear Slitting Can Provide Advantages

(Archive)

July 30, 2004, ... of knives and spacers, stacked on the shaft, provide a complete support for the web, thereby reducing to a minimum the possibility of wrinkling, bagging, or sagging. In tangential or kiss slitting, ...

Steering Directions Made Simple

(Magazine)

June 29, 2004, ... several problems, including lateral slippage, wrinkling, and tension variations. Good traction is critical to good steering. Web bending isn't free. Just like bending a beam, we need to apply a lateral ...

International Web Handling Conference Organizer Calls for Papers

(Archive)

June 24, 2004, ...  Winding and Unwinding Wrinkling Measurement of Physical Properties Sensors and Signal Processing Slitting and Runability Air Support Conveyance Spsonors say IWEB2005 is intended to be a forum for ...