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AssigneeGeorgia-Pacific France
InventorsMichel Basler, Pierre Laurent, Gilles Roussel, Rėmy Ruppel
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The invention concerns a method for making a sheet of paper comprising at least two crimped cotton-wool-like cellulose plies (20, 40). It consists in: unwinding a first ply (20) in the form of a strip from a reel, embossing it on an embossing unit (10, 12) and forming protuberances at its surface, unwinding a second ply (40) in the form of a strip from a reel, guiding it downstream of the embossing unit (10, 12), superposing the two strips, with their protuberances facing inwards, and in applying a linking means (14, 16) so as to make the two strips integral with each other. Said method is characterised in that immediately upstream of said linking means (14, 16), a tension regulating means (18) is applied in the machine direction on one of the strips, such that the two strips have the same elastic deformation in the machine direction when the linking means is applied. The invention also concerns a product obtained by said method.
A method for manufacture of a paper sheet comprising at least two plies of creped cellulose wadding, involving unwinding a first ply in a form of a strip from an unwinder, embossing it on an embossing group in order to form protuberances on its surface, unwinding a second ply in the form of a strip from an unwinder, guiding it downstream of the embossing group as an unembossed second ply, superposing the two strips, with protuberances toward an inside between the two strips, and applying a connecting means so as to make the two plies integral with one another, wherein immediately upstream of said connecting means, a tension-regulating means is applied to one of the two strips in the running direction, so that the two strips have a same elastic deformation in a running direction when the connecting means is applied;
Dependencies are inferred from the claim text.