A roll having two shells of differing stiffness

Details A roll having two shells of differing stiffness A roll having two shells of differing stiffness

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 13/00 (2006.01) D21G 1/02 (2006.01)

Patent

CA 2577592

The present invention relates to a roll supported at the middle thereof, for a paper, board or finishing machine, which roll is composed of two sections, a so-called inner shell (54') and outer shell (52'), supported by one another in the middle area of the roll (50'). It is characteristic of said roll that the nominal stiffness of the manufacturing material of the inner shell (54') of the roll is substantially greater than the nominal stiffness of the manufacturing material of the outer shell (52') of the roll.

L'invention concerne un cylindre supporté en son milieu pour une machine à papier, à carton ou une finisseuse, ce cylindre comprenant deux segments, une paroi intérieure (54') et une enveloppe extérieure (52'), en appui l'une sur l'autre dans la zone médiane du cylindre (50'). L'invention est caractérisée en ce que la rigidité nominale du matériau de fabrication de la paroi intérieure (54') du cylindre est sensiblement supérieure à la rigidité nominale du matériau de fabrication de l'enveloppe extérieure (52') du cylindre.

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