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Home March 17, 2010

Surface Prep
Carton/Box
- Folding / Gluing
- Sheeting
Coat/Laminate
Controls
Web Handling
Slit
- Knives
Print
- Inks
- Prepress
- Digital
- Flexography
- Gravure
- Letterpress
- Offset
- Envelope
Flexpack
- Substrates
Label/Tape
- RFID
Bag/Pouch
Die-Cut

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Drawing Conclusions: Part 1

Published Sunday, May 01, 2005

Web Lines In planning the tension control for any web line, there are only three options: tension control, torque control, and draw control. Between any two rollers or rolls controlled by a motor, brake, or clutch, you have to select one of these three choices. The most advanced of these options is closed loop tension control. Torque control is the easiest option when tension is created by a brake or clutch. The third option, draw control, is the open loop alternative to tensioning the web between two speed-controlled rollers. What is draw control? Draw control is simple.

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