Method for forming webs of transversely extensible fibrous material, in particular paper, and apparatus for implementing the method
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United States of America Patent
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Oct 9, 2012
Grant Date -
Jun 2, 2011
app pub date -
Aug 4, 2009
filing date -
Aug 7, 2008
priority date (Note) -
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Abstract
A method for producing webs of transversely extensible fibrous material, in particular paper, characterised by causing a web (12) of pliable fibrous material having a water content between 20% and 80% to adhere to at least one continuous elastic band elastic (6, 26, 31, 46, 66) adhering to the lateral surface of a first rotating roller, provided on its lateral surface with at least one circumferential cavity and to temporarily and locally pre-stretched said band by making it to enter into said at least one cavity for interference from at least one second rotating roller having its axis parallel to the axis of the first roller.
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