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| IS-IBC1
Layflat Controller (patent pending) |
What
it Does... The
Layflat Controller uses a second size feedback loop (see
below) from the bubble to set and maintain a specific bubble
size. The system comes with a 6 inch color touch screen
which provides a variety of other features such as trending,
troubleshooting, and commissioning tutors. The system comes
with a compensation function that allows for the drawdown
in the film as a result of tension between the primary nips
and the winding nips.
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How
it works...
By using a second set of sensors just above the sizing cage,
the system remeasures the bubble to get the final diameter.
From this diameter, the layflat is calculated and includes
an adjustable factor for shrinkage or drawdown. This configuration
is less dependent on line speed because of the short distance
between the sensing point and the die. Also, there is no variation
in the distance between the IBC and layflat sensors, which
keeps the controller working consistently for all line speeds
and when oscillating nips are used.
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Benefits...
Very good for managing on-fly-size changes,
works well with gusseted film, reduces the time it takes to
get the bubble on size and minimizes changes in layflat from
day-to-night changes in the frost line height. |
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