Tissue with surfaces having elevated regions

Details Tissue with surfaces having elevated regions Tissue with surfaces having elevated regions

D - Textiles, Paper

21

H

D21H 27/02 (2006.01) D21H 25/00 (2006.01) D21H 27/40 (2006.01)

Patent

CA 2419143

A tissue with two surfaces having elevated regions is provided. The elevated regions can be imparted onto the surfaces of the tissue utilizing various papermaking techniques and devices, such as using patterned fabrics, wire- mesh, and/or pressure rolls. A tissue of the present invention can have a substantial fiber density gradient in the -z direction and a relatively low fiber density gradient in the x-y plane. Moreover, the tissue can also have a substantial pore size distribution gradient in the -z direction and a relatively low pore size distribution gradient in the x-y plane for improved absorption properties.

L'invention concerne un papier mouchoir à deux surfaces présentant des zones surélevées, lesquelles peuvent être formées sur les surfaces du papier mouchoir à l'aide de techniques et dispositifs divers de fabrication de papier, tels que l'utilisation de tissus, de toiles métalliques, et/ou de rouleaux presseurs comportant des motifs. Selon l'invention, un papier mouchoir peut posséder un gradient élevé de densité de fibre dans la direction -z et un gradient de densité de fibre relativement faible dans le plan x-y. De plus, le papier mouchoir peut également posséder un gradient important de distribution des dimensions de pores dans la direction -z et un gradient de distribution des dimensions de pores relativement faible dans le plan x-y, afin d'être doté de propriétés d'absorption améliorées.

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