Method of embossing a sheet having one or more plies, and embossed paper sheet
AssigneeJames River Corporation
InventorsPierre Laurent, Remy Ruppel, Joel Hungler
Life of this patent
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Abstract
A method for embossing a sheet of creped paper composed of at least one ply, whereby the sheet is engaged between two metallic cylinders fitted with protrusions and driven in rotation in a conventional manner and mesh with each other while having a play e1 between the tops of the protrusions of one cylinder and the opposite surface of the other cylinder, and a play e2 between the slopes of two adjacent protrusions wherein e1 and e2 are determined in the direction transverse to the direction of paper advance in such a manner that the ratio of e1/e2 is between 0.8 and 1.
Claims9
A method of embossing a paper sheet composed of at least two piles comprising (1) engaging the at least two plies between a first metallic cylinder and a second metallic cylinder wherein each cylinder has protrusions extending radially therefrom and is driven in rotation, (2) meshing the protrusions of the first cylinder and the protrusions of the second cylinder with each other so as to provide a play e1 between tops of the protrusions on said first cylinder and an opposite surface of the second cylinder and further so as to provide a play e2 between slopes of two adjacent protrusions, wherein when e1 and e2 are determined in a transverse direction relative to advance of the paper sheet e1/e2 is between 0.8 and 1 and when e1 and e2 are determined in a direction of paper advance e1/e2 is between 0.2 and 1;
- and wherein at least one of said at least two plies is previously made to correspond in shape to a surface of one of said first cylinder or said second cylinder by applying said ply against said first cylinder or said second cylinder by means of a rubber-clad or an elastomer-clad cylinder.
Dependencies are inferred from the claim text.