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Home February 08, 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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Foray to the Future
Marsh Labels Goes Digital
Proteus Adds Heidelberg VLF
Folder/Gluer Is Modular

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Converting Rx: Bowed Roller Dosage

Published Thursday, December 01, 2005

Web Lines Last month we picked up our prescription for a bowed roller and read the instructions and warning label. But what’s in that bottle? How do we know we have the right dosage of bowed roller? Let’s combine a little diagnosis and diagramming to see how to find the proper prescription. The definition of a spreader roller is that the web enters at one width, WIN, and leaves at a greater width, WOUT. In this diagram, the bow is exaggerated, making the bowed roller radius look smaller than normal relative to span length. There are three similar ...

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