Method for making a central unwinding roll and resulting roll

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 19/28 (2006.01) B65H 19/22 (2006.01)

Patent

CA 2565107

The invention concerns a method for making a coreless roll (110') consisting of a sheet (110) of non-humid soft material such as a fibrous absorbent material produced by unwinding the sheet in one direction and winding same about a reeling axis perpendicular to said direction, and comprising a central unwinding leader strip forming a projection along said axis relative to at least one part of the plane of one of the flanks of the roll. Said method is characterized in that it consists in producing the lead by offsetting prior to winding an end portion of the sheet (110) such that one of its longitudinal edges forms a non-null angle (.alpha.) relative to said unwinding direction, then in winding the sheet about the axis. Preferably, several rolls are manufactured by cutting longitudinally a large sheet. The invention is in particular useful for making wipe rolls, hand towel rolls or toilet paper rolls.

La présente invention porte sur un procédé de fabrication d'un rouleau (110') sans mandrin composé d'une feuille (110) de matériau souple non humide tel qu'un matériau fibreux absorbant réalisé par défilement de la feuille dans une direction et son enroulement autour d'un axe de bobinage perpendiculaire à ladite direction, et comprenant une amorce de dévidage central formant une saillie le long dudit axe par rapport à au moins une partie du plan de l'un des flancs du rouleau. Le précédé est caractérisé par le fait qu'on réalise l'amorce en décalant avant enroulement une portion d'extrémité de la feuille (110) de manière à ce qu'un de ses bords longitudinaux forme un angle (.alpha.) non nul par rapport à ladite direction de défilement, puis on procède à l'enroulement de la feuille autour de l'axe. De préférence, on fabrique plusieurs rouleaux par la coupe longitudinale d'une large feuille. La solution s'applique à la fabrication en particulier de rouleaux d'essuyage, d'essuie-mains ou de papier toilette.

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