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- Web Lines | Winding Process Fundamentals, Pt. 1
- (Technical Reports)
- January 13, 2013, Understanding winding, roll defects, and winding-related web quality begins with understanding how the web, winder design, and process conditions combine to create the stress and strains of the wound roll. ...
- Web Lines | Why Bigger Cores?
- (Technical Reports)
- November 15, 2012, ... winding torque into outer layer winding tension. First, they are at a mechanical disadvantage to the tension at the outside of the roll. Second, they have less area per layer to develop the friction needed ...
- Gloucester Acquires Pearl Technologies
- (Extrusion Coating)
- October 17, 2012, ... and wicket attachments for converting equipment. Additionally, it offers customized performance enhancements built with low-friction surface technology for extrusion equipment such as collapsing frames, ...
- Web Lines | Why Avoid Nips?
- (Web Handling)
- September 24, 2012, ... here is a quick refresher on those topics. Avoid nips? Why? Nipped rollers are a top source of wrinkles and creases. Nipped rollers have the friction and pressure needed to shift, buckle, and fold ...
- Winding Technology | Now Directly in the Drive
- (Controls)
- September 19, 2012, ... to approx. 10:1, good dv/dt compensation and friction required From experience, up to approx. 15:1 From experience, up to approx. 15:1, precise dv/dt compensation required From experience, up to ...
- Montalvo Rotary Union Aids Air Flow
- (News | New Products)
- September 05, 2012, The tiny Micro Rotary Union from Montalvo injects air into any rotating shaft, offers low friction resistance, and has sturdy construction GORHAM, ME | The Montalvo Corp., specialists in industrial ...
- Catbridge Slitter Offers Speed, Versatility
- (News | New Products)
- August 26, 2012, ... The Model 900 runs in lay-on or gap winding modes and offers closed or open loop tension. Other available features include cam-lock or direct-friction style rewind shafts, auto knife positioning, laser ...
- Montalvo Single-Disc Brake Suited for Printing
- (Controls)
- June 05, 2012, The CS-Series brake from Montalvo Corp. is recommended for printing applications, including narrow web, and offers high capacity and low inertia GORHAM, ME | The Montalvo Corp. has developed a ...
- Montalvo Offers Free Data Sheets
- (Controls)
- May 06, 2012, ... on friction modules and friction pad designs for the HP brakes, torque ranges, effective cooling speeds, and related accessories. Montalvo also offers a free data sheet on its U-25 series load cell, ...
- Mach III Clutch Reports New Models
- (Controls)
- April 06, 2012, Nineteen new models of SensiFlex tension control clutches and brakes are on the market, including ones with ultra-low coefficient friction facings WALTON, KY | Mach III Clutch announces nineteen ...
- Gralex Unwind Stands Allow One-Person Changes
- (News | New Products)
- March 04, 2012, SRS Series unwind stands have self-adjusting friction brakes, lightweight shaft and core chuck assembly, and require no tools for changeovers LEWIS CENTER, OH | Model SRS stationary unwind stands ...
- WHQuiz Answer #8 - Nipped Driven Rollers
- (Web Handling)
- February 22, 2012, ... separating two tension zones? The capacity of an unnipped drive roller is an exponential function of web-to-roller coefficient of friction and wrap angle (in radians). For example, a COF of 0.3 and wrap ...
- Web Lines | Blocking in Rolls
- (Web Handling)
- January 12, 2012, ... Roughness | Reducing contact area reduces the total force that can form in layer-to-layer bonding. Surface roughness also will tend to lower coefficient of friction and decrease the stiffness of the winding ...
- Winding Film: How COF Properties Affect TNT
- (Winding Unwinding Rewinding)
- October 17, 2011, Your ability to apply tension/nip/torque winding principles to produce the desired roll hardness is affected by the film’s layer-to-layer coefficient of friction properties Your ability to apply tension/nip/torque ...
- Web Handling: Top 7 Causes of Wrinkles
- (Web Handling)
- October 09, 2011, ... material. For example, when a web tries to expand and it is constrained by frictional contact with a roller, wrinkles are likely to occur. In these cases, a strategically located spreader roll—one with ...
- Web Lines: Wrinkling of Foils
- (Flexpack)
- July 31, 2011, ... buckle, so they need high web-roller friction (from friction, tension, and width) to apply the load needed to make a wrinkle. The stiffness of foils means that misalignment effects quickly create large ...
- Web Lines: Is Wound Roll Pressure Greater Than Tire Pressure?
- (Tension)
- June 30, 2011, ... roll pressures. A frictional sandwich is an easy and inexpensive way to measure roll pressure. Make a frictional sandwich by inserting an unlubricated strip of steel feeler gauge (0.002 in.) in a folded ...
- Flexible Slitter Has Short Web Path
- (Slit)
- May 31, 2011, ... to entering slitting section; cantilevered air differential shafts with choice of direct friction or internal slip designs; and razor or shear slitting. Parkinson Technologies | 401-762-2100 | www.parkinsontechnologies.com ...
- Do You Want Nips with That? Part 2
- (Winding Unwinding Rewinding)
- April 30, 2011, ... be opened once steady line speed is reached. Q Why are nip rollers a popular choice to create drive roller friction? A Mainly, nips are simple to understand — pinch it, pull it. We can relate to nipped ...
- Web Lines: Would You Like Nips with That?
- (Winding Unwinding Rewinding)
- March 31, 2011, ... isn't there doesn't create waste. You may not be able to get rid of your need for nip pressure in your value-adding processes, but the nips I'd like to see avoided are the ones used to create friction ...