Method and device for hydroentangling a web made of a fibrous cellulose product, and a web of this type
US7467445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2004 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Jun 17, 2024 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/492
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process of hydroentangling a fibrous web (N) including of positioning the web on a porous moving support (10) in translatory movement or in rotation about an axis, and of treating at least one side of the web by means of a plurality of streams of water arranged in a row perpendicular to the direction of movement of the web, characterized in that the row includes streams with a first cross-section (14A) and at least streams with a second cross-section (24A) different from the first.The invention also relates to a process including treatment of the web by means of a plurality of streams of water arranged in at least two rows perpendicular to the direction of movement of the web. The rows include streams with a first cross-section (14, 16, 17, 18, 19) and at least streams with a second cross-section (24, 26, 27, 28, 29, 39) different from the first cross-section, at least one row including streams the spacing of which is not constant.This process may be applied to produce webs the state of the surface of which varies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.