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US 2006/0141179 A1Published application
Tube made out of pre-adhered plies
AssigneeSonoco Development, Inc.
InventorJohannes van de Camp
Life of this patent
Estimating the term…
Abstract
A wound tube comprising one, two, three, or more plies each having a cohesive layer for bonding the plies together. The plies are wrapped spirally about an axis to form a tube, which may then be cut to appropriate lengths. Once formed, the tubes may be used in a variety of applications including as cores for hygienic paper rolls.
Claims11
A method of producing a multi-layer tube comprising the steps of:
- advancing a plurality of plies from respective supplies thereof, each supply comprising a continuous ply having cohesive on at least one surface of the ply;
- and
- winding the plies one atop another such that the cohesive on each ply bonds to the cohesive on radially adjacent plies so as to adhere the plies together to form a wound multi-layer tube.
A method of producing a wound single-ply tube comprising the steps of:
- advancing a single ply from a supply, the supply comprising a continuous web defining first and second sides and first and second lateral edges, a first cohesive coating applied to the first side adjacent the first lateral edge, and a second cohesive coating applied to the second side adjacent the second lateral edge;
- winding the single ply about an axis such that first and second lateral edges of the ply make overlapping contact forming a helical overlapping joint;
- wherein the first cohesive coating and the second cohesive coating are bonded together as the ply is wound to form the helical overlapping joint.
A method of producing a multi-layer tube comprising the steps of:
- advancing a first ply from a first cohesive ply supply, the first ply having a cohesive on at least one surface of the first ply;
- advancing a second ply from a second cohesive ply supply, the second ply having a cohesive on at least one surface of the second ply;
- and
- winding the first and second plies one atop another such that the cohesive on the first ply bonds to the cohesive on the radially adjacent second ply so as to adhere the plies together to form a wound multi-layer tube.
1 more element
Dependencies are inferred from the claim text.