US 7,467,445 B2
	Method and device for hydroentangling a web made of a fibrous cellulose product, and a web of this type
Bernard Louis Dit Picard, Amfreville la Campagne (France); and Philippe Gregoire, Les Andelys (France)
Assigned to Georgia-Pacific France, (France)
Appl. No. 10/560,543 PCT Filed Jun. 17, 2004, PCT No. PCT/FR2004/001510 § 371(c)(1), (2), (4) Date Dec. 14, 2005, PCT Pub. No. WO2004/113602, PCT Pub. Date Dec. 29, 2004.
Claims priority of application No. 03 07349 (FR), filed on Jun. 18, 2003.
Prior Publication US 2006/0137155 A1, Jun. 29, 2006
Int. Cl. D04H 1/46 (2006.01)

U.S. Cl. 28—104

4 Claims

4. A process of hydroentangling a fibrous web comprising positioning the web on a porous support in translatory movement or rotating about an axis, treating the web by means of a plurality of streams of water arranged in at least two rows perpendicular to a direction of movement of the web, the streams having a cylindrical form, wherein the at least two rows comprise streams of a first constant cross-section and streams of a second constant cross-section different from the first cross-section, and at least one row of said at least two rows comprises streams of non-constant spacing, wherein said treating is with streams arranged in from two to four rows, wherein a first row comprises streams made up of groups spaced at intervals from each other, and a second row comprises streams not in alignment in the direction of movement of the web with the streams of the first row, and wherein the first row comprises streams with the first cross-section and streams with the second cross-section, and a second row comprises streams with the second cross-section or streams with the second cross-section and streams with a third cross-section.