Method for perforating tissue sheets
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United States of America Patent
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Aug 9, 2016
Grant Date -
Jul 1, 2010
app pub date -
Dec 29, 2008
filing date -
Dec 29, 2008
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Abstract
Curvilinear or other complex perforation patterns for paper products, such as paper towels and bath tissue, can be produced using a differential speed perforation nip formed between a rotating pattern roll and a moving anvil surface. The relative speed between the perforation elements on the surface of the pattern roll and the anvil surface shears the web at the perforation points.
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