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high-performance, narrow- web idler rollers with a spin

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8" wide demo unit

This portable unit is designed for demonstration purposes and includes (5) 1.33" diameter rollers 8" long and an extensible nonwoven web.  (3) of the (5) have  Power Puck drivers and when individually energized have the following results:

Number of rollers powered Web Speed
1 of 5 475fpm
2 of 5 950fpm
3 of 5 1430fpm

This clearly shows that a single puck can overcome the friction of all (5) idlers plus have enough torque to still drive the web.  Any additional pucks can carry the web at higher speeds without absorbing any web tension normally lost in keeping the rollers spinning.  Also, keep in mind that these do not limit the speed of the idler; they will spin faster as the web is pulled faster.  

THAT'S 3AMPS OF 24V TO CARRY A WEB OVER 1400fpm OVER (5) ROLLERS without TENSION LOSS.

 

2000fpm Splicing Unwind for 24" wide Tissue Product

In order to run at these speeds at web tensions low enough not to tear out a sheet as fragile as single-layer tissue, (9) of (16) Idlers were powered by Power Puck modules.  Because rollers in an accumulator accelerate and decelerate at different rates during a splice sequence, it is not practical to drive each individual roller by conventional means.

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Last modified: 03/14/08