Core for core wound paper products having preferred seam...

Details Core for core wound paper products having preferred seam... Core for core wound paper products having preferred seam...

B - Operations, Transporting

65

H

B65H 75/10 (2006.01) B31C 99/00 (2009.01) B31C 1/00 (2006.01) B31C 3/00 (2006.01)

Patent

CA 2192319

A core for core wound paper products. The core is made by wrapping dual plies (22, 24) in a spiral pattern and adhering the plies together. The edge (34) of one ply (24) overlaps the ply gap (36) of the other ply (22), preventing a single ply thickness from occurring anywhere on the core. Alternatively, the edge (34) of each ply may overlap the ply of that respective ply. In yet another embodiment, the overlap (42) may be formed by a separate ply applied to either ply.

L'invention se rapporte à un tube pour produits en papier enroulés. On forme ce tube en enroulant des doubles couches (22, 24) en spirale et en les collant entre elles. Le bord (34) d'une couche (24) recouvre l'espace (36) laissé par l'autre couche (22), assurant ainsi qu'il y ait partout sur le tube toujours plus d'une seule épaisseur. Dans une variante, le bord (34) de chaque couche peut recouvrir l'espace laissé par l'autre couche respective. Selon un autre mode de réalisation, le chevauchement peut s'effectuer à l'aide d'une couche séparée appliquée sur l'une ou l'autre couche.

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