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Home March 14, 2010

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

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Where Does a Spreader Spread?

Published Wednesday, October 01, 2003

Spreader rollers are important tools for web handlers with two main applications. First, they can spread a web after slitting, creating a gap between slit strands. Second, they can ensure the web is laterally taut, removing or preventing wrinkles. I've been laying the groundwork for this discussion on how spreader rollers spread. Over the past two months, I have covered the parallel entry principle (PEP) and the beam-like nature of web bending. Using these two concepts, let's dissect the commonly misunderstood mechanism and limitations behind two popular spreader rolls: the bowed roller and the expanding-surface roller. Both rollers ...

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