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Web Lines | War on Bagginess

(Web Handling)

February 26, 2014, A program to reducing bagginess begins with quantifying it, reducing thickness variations, and minimizing winding stresses and strains. Bagginess is an area that many paper, film, and foil converters ...

Material Properties, Testing & Applications: Part 3

(Converting Expert)

September 26, 2022, ... pull out any bagginess. The “rule” would suggest 0.06 – 0.14 PLI for the earlier 15gsm SB example.  Actual good run settings are 0.45 PLI which is 81 percent of the elastic limit.  High modulus webs ...

Material Properties, Testing & Applications: Part 3

(Coating/Laminating)

July 17, 2022, ... air drag and pull out any bagginess. The “rule” would suggest 0.06 – 0.14 PLI for the earlier 15gsm SB example. Actual good run settings are 0.45 PLI which is 81 percent of the elastic limit. High modulus ...

Web Lines | Action Plan for Baggy Webs

(Web Handling)

August 16, 2016, Bagginess is not easily measured, but here are some methods to compare low, moderate, and high levels of bagginess. Bagginess is not easily measured, but here are some methods to compare low, moderate, ...

Web Lines | Unwritten Rules, Now Written

(Technical Reports)

April 27, 2015, ... will run at narrower web width, especially obvious in low modulus and thin webs. Moderately tensioned webs will run at a wider width, have less traction to pull out bagginess, turn idler rollers, and ...

Web Lines | Wrinkling?

(Web Handling)

May 18, 2014, ... of bagginess. Does this seem simple? I've set up and run these type of trials working with a partner company in Rochester, NY, but it is something anyone could do. I could see any one or all of these ...

Is There a Doorman at Your Winder or Do You Let Just Any Web Get In?

(Web Handling)

May 15, 2014, ...  Nips and Hardbands–The nips will press hardest on the large diameter portions of the winding roll. Increase stress of high thickness, larger diameter lanes, creating more bagginess viewed when unwinding ...

Web Lines | Why Is Winding Optimization Difficult?

(Web Handling)

April 21, 2014, ... a winding or wound roll as layers compress and wound-in air escapes. Your specific web’s mechanical properties are critical to any winding project. Other key web properties are thickness profile, bagginess, ...

Maxson Bowed Rolls Smooth Out Wrinkles

(News | New Products)

April 14, 2014, ... being sheeted. By adjusting the position of the bow, relative to the web flow, the roll tightens the center or the edges of web compensating for bagginess that can result in wrinkles. In cases where ...

What Mechanisms Cause a Web to Shift Laterally?

(Web Handling)

October 07, 2013, ... web moves off centerline, there are a limited number of reasons this happens. 1. Roller misalignment 2. Roller diameter variations 3. Web bagginess 4. Nip pressure variations 5. External forces Mechanism ...

Web Lines | Winding Process Fundamentals, Pt. 4

(Web Lines)

September 23, 2013, ... web and the lay flat or bagginess would be unchanged. However, if the web was held under the same strain differential conditions for long periods of time, such as within a wound roll, a portion of the ...

Destination CPP EXPO: Solve Your Technical Questions

(Trade Shows)

September 06, 2013, ... the causes and remedies of the most common lateral roll errors. C21 Causes and Remedies for Web Bagginess Sept. 11: 10:30 AM - 12:00 PM Room 504C Presented by: Timothy J. Walker, TJWalker + Associates ...

Show Preview | CPP EXPO and PRINT 13 Share a Stage

(Print)

August 07, 2013, ... Handling Stop Telescoping Your Rolls Causes and Remedies for Web Bagginess Mark Miller, founder/CEO, Coating Tech Service and author of PFFC’s “Coating Matters” column Process Troubleshooting: ...

PFFC & CPP EXPO Collaborate on Conference Sessions

(Yo's Yarns)

April 28, 2013, ... Rolls–September 11: 8:30 A.M. to 10 A.M.; Bagginess: Causes and Remedies for Web Bagginess–September 11: 10:30 A.M. to 12 P.M. But there's more! Henry Freedman of Technology Watch, Image Test Service ...

CPP EXPO Taps PFFC To Collaborate on Conference Program

(Coating/Laminating News)

April 21, 2013, ... Rolls; Bagginess: Causes and Remedies for Web Bagginess - September 11: 8:30 A.M. to 12 P.M. "Paper, Film & Foil Converter is energized about offering a full program of technical subjects in the country' ...

Tim Walker Seminar to Cover Web Handling Basics

(News | New Products)

April 12, 2013, Columnist will offer tools to diagnose and remedy defects such as tension variations, bagginess, curl, scratches, misalignment, and wrinkling   ST. PAUL, MN | Tim Walker, PFFC “Web Lines” columnist, ...

Web Lines | Winding Process Fundamentals, Pt. 2

(Technical Reports)

February 18, 2013, ... and winding-related web quality (e.g., bagginess) begins with understanding how the web, winder design, and process conditions combine to create the stress and strains of the wound roll. To understand ...

Web Lines | Winding Process Fundamentals, Pt. 1

(Technical Reports)

January 13, 2013, ...  Understanding winding, roll defects (e.g., tin-canning), and winding-related web quality (e.g., bagginess) begins with understanding how the web, winder design, and process conditions combine to create ...

Web Lines | Why Bigger Cores?

(Technical Reports)

November 15, 2012, ... less significant hardbands, and less winding-induced bagginess. Fewer layers mean less near core pressure buildup and high-pressure defects, such as coining, core impressions, blocking, starring/spoking, ...

Web Lines | Measure Tension Wherever Possible

(Web Handling)

August 13, 2012, ... and control will reduce waste from scratching, wrinkling, web bagginess and camber, curl, web shifting, and most winding defects. Many on-line web quality measurements are difficult, expensive, or impossible. ...