Search

WHQuiz Answer #14 - Web Wrinkling and Deflection

(Web Handling)

February 22, 2012, WebHandlersQuiz 15: Wrinkling – If a roller is deflecting into a bowed shape due to gravity, which direction is it best NOT to approach that roller if you don’t want to wrinkle: vertically from above, ...

WHQuiz Answer #14 - Web Wrinkling and Deflection (2)

(Web Handling)

February 22, 2012, WebHandlersQuiz 16: Spreading - Name a spreader or anti-wrinkle roller that does NOT have a rubber surface?  Answer... WebHandlersQuiz 16: Spreading - Name a spreader or anti-wrinkle roller that does ...

Web Lines | Test Your Web Handling Knowledge

(Web Handling)

February 14, 2012, ... rollers in a process likely will have the larger diameter? 8. Traction—When is a nipped roller needed on a driven roller separating two tension zones? 9. Nipped Rollers—What is a simple measurement ...

Static Beat | Side Matters

(Static-Beat)

February 07, 2012, ... a “hot roll.” Look at the good performance of the tinsel in Figure 1. The 1-mil (25-m) biaxially oriented polypropylene (BOPP) web has no static before it touches the polymer nip roller. Exiting the ...

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 ...