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Web Handling Workshops from TJWA & Optimation

(News | New Products)

January 26, 2012, ... of what is web handling, get your questions answered. • Nipped Systems and Laminating—September 11-12. Understand how to create uniform pressure, wrinkle-free nipping systems and curl-free laminates. ...

Static Beat | How To Eliminate Hot Rolls

(Static-Beat)

January 16, 2012, ... extrusion process. So, extruders usually are not a significant source of static charge. 2. Haul-Off Nip | The haul-off nip compresses the cylindrical tube into a two-layer web. The nip is usually a movable ...

Web Lines | A Rant from Tim Walker

(Web Handling)

December 04, 2011, ... tractor. That’s why the dashboard reads miles per hour. But, my dear equipment supplier, when you get out of your car and get to the office or shop floor and build your winder, slitter, or nipped process, ...

Static Beat: Beat Winter Static

(Static-Beat)

November 22, 2011, ... polymer surfaces on drive, nip, cleaning, spreader, and lay-on rollers often are sources of sparks because static can accumulate on the surfaces of these rollers. To prevent these sparks, clean these rollers ...

Web Lines: Take the Laminator Quiz

(Coating/Laminating)

October 16, 2011, ... my ideals, take the following quiz. For each Yes answer, award your laminator the points for that question. 1. Is your nip guarded and accident free? Yes = 20 pts. 2. Is your nip entry point well-lit ...

Web Handling: Top 7 Causes of Wrinkles

(Web Handling)

October 09, 2011, ... wrap (usually stated in terms such as 10 o’clock to 3 o’clock), web tension (PLI), any nip load (PLI), web width, and maximum expected line speed. A good supplier will walk you through these questions ...

Unwinding Static

(Static-Beat)

August 21, 2011, ... The outside film surface is nearly neutral, so static will reside on the inside film surface. As the charged film approaches the first conveyance roller, a static discharge called pre-nip ionization will ...

Best Papers Named At IWEB Conference

(Web Handling)

July 31, 2011, ...  Kevin Cole, Optimation Technology, for “Measurement and Modeling of 2-D and 3-D Web Feed Rates in Rubber-Covered Nip Roller Applications” WHRC | www.webhandling.okstate.edu Emral Ltd. | www.emral.co.uk ...

Slit Many Substrates

(Slit)

May 31, 2011, ... film, foil, and laminates, it is available in widths from 1,000-1,800 mm. Vacuum roller for tension isolation point means no nip rollers or S-wraps. Ashe America | 802-254-0200 | www.ashe.co.uk  ...

Static Beat: Off-Line Charging Measurements

(Static Elimination)

March 31, 2011, ... for measuring triboelectric charging performance. If you know of such standards, I invite you to send me an e-mail! Of the many “practical” tests for static charging, one of the best is the “nip roller” ...

Show Preview - Forecast for Orlando: ICE

(Trends/Management)

January 31, 2011, ... Blaige, Blaige & Co. Wednesday, April 6 10:00-10:30 a.m. Are New High Technology Coating Methods Better than the Old Reliable?: Edward Cohen, Edward D. Cohen Consulting Inc. Conveyance Roller Nip ...

Green Converting: Recycled Roll Coverings

(Web Handling)

November 30, 2010, ... large winding or nip rolls require 700 lb of rubber. That covering is then discarded in a landfill. Now as much as 100% of that material can be saved by removing it carefully, testing it for foreign contaminants ...

Reflections on Deflection

(Winding Unwinding Rewinding)

November 30, 2010, ... nip rollers or support arms can alleviate the woes of deflection. A shaft will have less deflection when winding a full width product. In these cases, the shaft often will be reinforced by the pressure ...

Web Lines: Q&A on Roller Deflection

(Web Handling)

October 31, 2010, ... away from the supported end. A roller supported from both ends will have maximum deflection at the center of the roller. What causes roller deflection? Gravity, tension, nip loads, and intentional ...

Web Lines: Web Length per Roller Revolution=?

(Editorial)

September 30, 2010, ... only to 99%. If you want to accurately estimate the feed rate, you need to consider other factors, including the effects of web thickness, web tension, nipping compression, and rubber covering elongations. ...

Static Beat: Prevent Winter Static

(Static Elimination)

September 30, 2010, ... to the manufacturer's recommendations. The rubber or polymer coverings on drive, nip, cleaning, spreader, and lay-on rollers often are sources of sparks because static can accumulate on the surfaces ...

How To Use an Electrostatic Voltmeter

(Static-Beat)

April 30, 2010, ... An aluminum hard-coated nip roller holds the film firmly against the polymer-covered roller. Nip rollers are common at the exit of the dryer in coating operations and just prior to the chopper in sheeters. ...

AIMCAL & CEMA To Host AWEB Applied Web Handling Conference

(News | New Products)

April 13, 2010, ... Dr. David Roisum • Controlling Static in Winding Rolls, Dr. Kelly Robinson • Measurement & Modeling of Nip Roller Feed Rates: Dr. Kevin Cole • Curl in the Lab & on the Machine: Dilwyn Jones • Strain ...

Web Guiding | Lateral Motion Causes

(Web Lines)

March 31, 2010, ... costs. Lateral Errors in Web Transport | The five big causes that shift the web are misalignment, diameter variations, web camber/bagginess, uneven nipping, and interaction of the web to air or fluid ...

What Is the Right Tension?

(Web Lines)

November 30, 2009, ... Go lower or higher tension to match strains at laminating. Look out for processes like nipping or coating that can put extreme stresses or drags on your web. For laminate webs comprised of many layers, ...