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Static Beat: Why Static Is Worse at High Speeds

(Static Elimination)

July 31, 2011, ... materials, surface roughness, contact pressure, and slip. Slip increases as the film speed increases. In Figure 1, the film tension difference across the roller is caused by bearing drag. This tension ...

Web Lines: Is Wound Roll Pressure Greater Than Tire Pressure?

(Tension)

June 30, 2011, ... a roll. Stiffer films, like polyethylene terephthalate (PET), can be all over the map, depending on their thickness, surface roughness, and winding tensions/methods, but 50-500 psi might be expected at ...

Do You Want Nips with That? Part 2

(Winding Unwinding Rewinding)

April 30, 2011, ... roller is air lubrication. You may measure web-to-roller COF as 0.3 or 0.6, but the true coefficient of traction (COT) may drop when entrained air exceeds the combined surface roughness of web and roller. ...

Narrow Web & Label Reporter

(Narrow Web)

April 30, 2011, ... the wine, champagne, and spirits category of the Pentawards this year. Glenroy Inc., Menomonee Falls, WI, launches ExpressWeb, formerly known as the Narrow Web Printer's Program, to provide surface ...

Roll Finishing-Cut & Sand

(Winding Unwinding Rewinding)

April 30, 2011, ... and offers converters a quick and efficient method of finishing the roll to the standards required by the customer. The system reportedly allows the robots to address all roll sizes and unfinished surfaces ...

INFO*FLEX Show Preview: Full Speed Ahead

(Flexography)

March 31, 2011, ... Flint Group Printing Plates Are Round Image Carriers Finally Here? — Ray Bodwell, DuPont Packaging Graphics Genetic Transfer Technology, Revolutionary Roll Surface for Natural Ink Management: Bye-Bye ...

Print on Water

(Print)

February 28, 2011, ... “Due to interfacial tension on the border of water division [surface tension of water is about 72 dyn/cm, and surface tension of nano ink is 28-29 dyn/cm], ink in the form of thin liquid film stays on ...

Show Preview - Forecast for Orlando: ICE

(Trends/Management)

January 31, 2011, ... for Achieving Remarkable Surface Adhesion: Rory Wolf, Enercon Industries Corp. A Video Guide to Web Wrinkling & Spreading: Tim Walker, TJWalker and Assoc. Inc. Razor Slitting: Benefits & Limitations: ...

Web Lines: Blow Away Your Roller

(Web Handling)

December 31, 2010, ...  Use an air turn, also known as an air turn bar or air reverser. An air turn is a cylindrical element with either a slotted, perforated, or porous surface combined with an air supply. In design, the ...

Print on Paper, Film, Foil-now WATER?!

(Print News)

December 07, 2010, ... NEO UV-LED Evolution, claimed a technology that: “100% prints on ANYTHING”—including water. The company’s equipment reportedly images on “impossible surfaces,” such as furniture, glass windows, iPhones, ...

Monomer Has Many Uses

(Coatings)

November 30, 2010, ... surface tension, making it a good diluent and substrate wetting agent. Reportedly improves adhesion promotion and elongation; demonstrates excellent weathering resistance; and is an effective comonomer ...

Process Troubleshooting

(Coating/Laminating)

October 31, 2010, ... include web cleaners, steering, tension, static control, and temperature control. The material characteristics to be measured include surface energy and substrate manufacturing data. The issues (typically ...

Web Lines: Q&A on Roller Deflection

(Web Handling)

October 31, 2010, ... the roller surface. Measure total deflection for low and high loads or tensions. How much roller deflection is a problem? For cantilevered rollers, the deflection and alignment specs should be the ...

Web Lines: Web Length per Roller Revolution=?

(Editorial)

September 30, 2010, ... between two solid rollers, stretching in the nip zone and snapping back in the unnipped condition. For the web pinched between the stretching rubber and the rigid metal surface, which will control the ...

Static Beat: Prevent Winter Static

(Static Elimination)

September 30, 2010, ... each neutralizer to the film surface. Manufacturers typically recommend that static bars should be located 2-4 in. from the film surface. Tinsel and ionizing string should be located 0.5-2 in. from the ...

Pilot Coaters: Small Volume, Big Advances

(Coating/Laminating)

September 30, 2010, ... of coverages and substrates. Thus, they can demonstrate new technology that could be built into new coating lines. They have added web cleaners, UV curing, surface treatment, variety of coating methods, ...

Laminating Corona Treating: Bond Boosting

(Corona, Flame, Plasma)

July 31, 2010, ...  High Definition Corona Treaters Polymer films used in the laminating process generally are chemically inert with non-porous surfaces and low surface tensions. Each film type has an inherent surface ...

Brake Handles More Torque

(Tension)

June 30, 2010, ... no maintenance. Reportedly, technology is ideal for tensioning or other power transmission applications. Also features polished seal surfaces, high-temperature materials, and rugged construction. MAGPOWR ...

How To Use an Electrostatic Voltmeter

(Static-Beat)

April 30, 2010, ... objects or film samples that fit within a Faraday cup; and a non-contacting electrostatic voltmeter, which measures the surface potential of a film. An electrostatic fieldmeter responds to the total ...

Trends in technology

(Coating/Laminating)

April 30, 2010, ... surface wettability The widespread use of the Internet in all aspects of the business The development and increased use of pre-metered coating methods Moving forward Evolutionary advances will ...