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- Film Opens New Markets
- (Magazine)
- February 27, 2005, ... 114 126 Heat 150ºC 30 min. % MD 2.1 Shrinkage TD 0.8 190ºC 5 min. % MD 4.9 TD 3.6 Friction μs 0.4 (Treated/Non-treated) μd 0.4 Haze ...
- Why Tension?
- (Magazine)
- January 30, 2005, ... Tensioning each wrap as it goes onto the roll creates the internal pressure and friction that is just right to hold the roll together. Too little tension and the roll package easily falls apart or sags ...
- Who Likes Film?
- (Magazine)
- December 30, 2004, ... out. Smooth surfaces provide less "tread" and quicker onset of lubrication. To add to these problems, many films have naturally lower initial coefficients of friction to roller surfaces. When rollers ...
- The Harms of Harmony
- (Magazine)
- November 29, 2004, ... Now drive and idler rollers both are suspects. Initially, look at the local tension zone, but also look at the immediate upstream tension zones. Don’t be fooled into thinking a high-friction drive roller ...
- Technical Facility
- (Magazine)
- October 30, 2004, ... tests, as well as chemical analysis. All kinds of properties such as tensile strength, haze, gloss, friction, and shrinking values can be tested immediately after the film is produced on the company's patented ...
- 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, ...
- Rise & Fall of Printed Film COF
- (Flexpack)
- June 29, 2004, Packaging products require a specific range of coefficient of friction (COF) to allow automatic packaging operations to run unhindered and to prevent Packaging products require a specific range of coefficient ...
- Tracking Wrinkles: Part II
- (Magazine)
- May 31, 2004, ... a web isn't free, it requires force. The web often is limited by a roller's available friction force. This is one reason why rollers with small wrap angles and friction rarely wrinkle: The roller can't exert ...
- New Products, Part 1
- (Magazine)
- May 30, 2004, ... knife section, company says, and ball friction shafts allow an even tension setting across the full working width. Tension Control is a Space-Saver Magpowr, Oklahoma City, OK; 405/755-1600; magpowr.com ...
- Optimum Release
- (Magazine)
- April 29, 2004, ... which users are experienced in handling the solvents. They offer the advantages of good wetting, low coat weight, good anchorage, and low coefficient of friction. In particular, they offer good release ...
- Fun with Force Gauges
- (Magazine)
- February 28, 2004, ... caused by hysteresis and friction. Measure torque of bearings, brakes, and clutches Attach the strap to the surface of a braked or clutched roller or core. Pull with the force gauge to measure the ...
- Darwin Would Approve
- (Unprinted Rolls)
- January 30, 2004, ... track of. But, if something goes wrong, the sensor spots it and alerts us. If it senses an increase in bearing friction, for example, ei3 alerts us immediately and tells us which bearing it is so we can ...
- Get More with Less
- (Magazine)
- December 31, 2003, ... a smaller brake than a larger one. But they have to be sure it's going to dissipate enough heat so they don't run into problems with their friction material burning up rapidly.” To find that proper tension ...
- Products and Materials
- (Magazine)
- December 30, 2003, ... Upgrade offers quick-change release locks to change friction pads in seconds without tools; zero-maintenance piston design; and patented anti-squeal friction pads. Handle Rolls with Self-Contained System ...
- Doctor Blade Systems: A Cure for What Ails Your Printing Process
- (Magazine)
- October 31, 2003, ... use of doctor blade materials and coatings with low coefficients of friction that efficiently meter the rollers as well as increase the roll and doctor blade life, according to Allison. “Doctor blade assemblies ...
- Products
- (Magazine)
- September 29, 2003, ... Cleveland-Kidder Slim Cell is said to provide improved effectiveness for low-profile load cell applications that utilize either rotating shafts or dead shaft rollers. With a new low-friction bearing design ...
- Pay Attention to Tension
- (Archive)
- August 31, 2003, ... term “tension isolation” often is misused. Yes, the driven roller friction prevents tension shocks from surging downstream. However, friction does not prevent the web strain — the elongation from tension ...
- The Long & the Short of Web Bending
- (Magazine)
- August 31, 2003, ... wrap (1.57 radians), coefficient of friction of 0.25, and 2 PLI of tension over a 60-in. width? Do you have an intuitive feel for this question? The frictional force on this roller will be 47 lb of friction. ...
- Products
- (Magazine)
- August 31, 2003, ... positioning system, and a hard-stop core locating system with positioning feedback. Model is equipped with an auto tail cut-off/web advance system; servo-controlled telescopic roll pushers; and frictionless ...
- Green Stands for Go
- (Flexpack)
- July 31, 2003, ... Turconi, sales director of retail operations and the founder's grandson, explains, “PLA film is better in machinability because of a constant COF [coefficient of friction] versus a variable COF for cellophane ...
