Web-slitting apparatus with driven pinch and windup rollers for varying web tension
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United States of America Patent
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-
Apr 11, 1995
Grant Date -
N/A
app pub date -
Dec 23, 1991
filing date -
Apr 24, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for subdividing a flexible web into at least two strips and winding same up into individual rolls has a supply roll on which the flexible web is wound, at least one takeup roll on which the web is also wound, and a drive for rotating the takeup roll and thereby pulling the web from the supply roll. The supply roll is braked to tension the web. Between the supply and takeup rolls the web is longitudinally slit into at least two individual strips. A pair of pinch rolls between the slitting means and the takeup roll engage the individual strips without slip a drive or brake rotates the pinch rollers at a speed such that the tension in the web upstream of the pinch rollers is substantially greater than the tension downstream of the pinch rollers.
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