Method for producing coreless rolls of paper

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United States of America Patent

PATENT NO 9919888
SERIAL NO

15005433

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Abstract

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A method of forming a roll of convolutely wound web material. The method includes winding web material around an elongated mandrel to form a roll of convolutely wound web material. The mandrel is substantially axially elastic and formed of material having a tensile yield strength divided by elastic modulus greater than 2.0%, and more preferably 2.5%. The mandrel is preferably radially complaint. The method further includes removing the mandrel from the roll. A further method includes winding web material around an elongated mandrel to form a roll of convolutely wound web material, the mandrel being comprised of material having a tensile yield strength divided by elastic modulus greater than 2.0%, and then longitudinally elongating the mandrel.

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Patent Owner(s)

Patent OwnerAddress
BW CONVERTING INC2300 SOUTH ASHLAND AVENUE GREEN BAY WI 54307

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Techlin, Michael E De Pere, US 14 64

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