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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, ...

Get a Grip on Your Web

(Tension)

October 31, 2009, ... in nip rollers or “S” wraps. Vacuum rollers are designed to pull the web into intimate contact with the roll, preventing web slippage in either direction. The result is a highly effective web control ...

Roller Coverings: Built 'TPU' Toug

(Bag Pouch Main)

September 30, 2009, ... PPC installed Menges's Tiger Max TPU-coated nip rollers on one of its blown film systems. Since then, the bag machine nip roller and winder nip rollers also have been replaced with Menges's Tiger Max TPU ...

How To Prevent Winter Static

(Static Elimination)

August 31, 2009, ... surface. Maintain these rollers according to the manufacturer's recommendations. The rubber or polymer coverings on drive, nip, cleaning, spreader, and lay-on rollers often are static dissipative. Electrical ...

Eliminate Ooze Build Up

(News Eclips)

August 04, 2009, ... edge of the paper that provides clean running on the press. No more shutting down to clean the vacuum box, nips, and rollers. Press maintenance and downtime will decrease, efficiency will increase, and ...

Playing the Wrinkle Blame Game

(Web Lines)

June 30, 2009, ... changes over time, relaxing or shrinking, then buckles may form in the roll. If the process conditions form a wrinkle during roll starts, if the winding nip loses contact, if the tension is upset, if taper ...

AIMCAL To Broadcast Free Webinar on Static

(News | New Products)

June 08, 2009, ...  Machine maintenance, such as cleaning rollers and replacing bearings or belts. Process adjustments including lowering tensions and nip roller engagement pressures. Working with your supplier to reduce ...

Stress & Strain

(Archive)

May 31, 2009, ... slitting; gather and buckle ahead of the nip point of a crush knife; and flutter out of plane, contacting shear knives ahead of the overlap point. In all these scenarios, a perfect knife setup can be ruined ...

Stop Tribocharging Your Products

(Static Elimination)

April 30, 2009, ... choices. For covered rollers such as drive rollers or nip rollers, polyurethane is a better choice than silicone rubber. The materials in the Triboelectric Series fall into groups such as “natural fibers” ...

Hit the Apex at CMM

(Editorial)

March 31, 2009, ...  first workshop will cover tensioning, nipping, compliant rollers, wrinkling, and post-lamination handling. In his second workshop, Tim will focus on waste generated from wrinkles and creases and how t ...

Static Specified

(Archive)

March 31, 2009, ... into the coater; a nip roller at the dryer exit secures the coated film; and a float roller controls the winding tension. The winder uses a lay-on roller to improve wound roll integrity. Ten baseline ...

The Great Span Length Debate | Part 1

(Web Lines)

February 28, 2009, ... this simple question is more complicated. Ergonomics and Safety Rollers in close proximity always should be considered a safety hazard. In some cases, a guardable nip point can be two rollers as far ...

Crowning Benefits

(Web Handling: Main)

February 28, 2009, Many industrial manufacturers rely on crowned rollers. A crown is a shape or diameter profile necessary to compensate for deflection and obtain uniform nip pressure distribution Many industrial manufacturers ...

Film Converting: Luminit Films Shape Light

(Substrates)

September 30, 2008, ... a sub-micron pattern of lenses — as many as 20 million/sq in. — onto the epoxy, which is then applied to the film using an ABBA nip roller. “The nip roller presses against a ‘nickel shim’ that has a ...

Converting School Hosts Two September Courses

(News | New Products)

August 17, 2008, ... as well as converting machines such as coaters, laminators, printers, and winders. Topics include rollers, controls, nips, spreading, slitting, wrinkling and winding. This course explains the fundamental ...

Seminars for Engineers Moves Date of Web Handling Seminar

(News | New Products)

August 14, 2008, ... areas of web handling, including tension control, rollers design and alignment, nips, guiding, wrinkling, and spreading. The training will address these topics at all levels, providing rules of thumb and ...

Web Lines: The Spin on Idler Roller Testing

(Web Lines)

May 31, 2008, ... the speed of your idler rollers to speed of your web or to a non-slipping roller such as a nipped or vacuum-assisted driven roller — is the acid test. If the roller isn't slipping, what could be wrong? ...