Rieter Perfojet

Fr&eacute;d&eacute;ric Noelle

Bruno Roche

A method for producing a nonwoven web formed at least partly with hydrophilic fibers is provided. In one aspect, the method comprises producing by carding a textile layer ( ) which is then compressed and moistened; subjecting the textile layer to a bonding treatment using water jets acting at least against one of its surfaces; and transferring said bonded layer to a unit ( ) to be dewatered and dried. One aspect of the method is characterized in that, after the bonding treatment ( ) with water jets and before drying and delivery, the pre-bonded and moistened layer is transferred to a supplementary unit ( ) to be treated by the action of one or several series of water jets, the unit comprising a mobile suction surface in the form of a drum covered with an open-work structure ( ) comprising a wire-mesh fabric, the wire-mesh fabric comprising successive raised and recessed zones.

Method for the production of nonwoven webs, the cohesion of which is obtained by means of fluid jets

A device for treating sheet-like material using water jets/needles. The device comprises a pressurize water supply body consisting of a feed chamber extending along the entire length of the body and inside which pressurized water is guided through a filter, and a distribution area distributing pressurized water along the entire length of treatment. The distribution area includes a plate ( ) which is provided with microperforations, whereby the holes thereof define water needles which are directed against the surface of the material which is to be treated. The invention is characterized in that the microperforations ( ) are provided inside inserts ( ) which are made of a hard material. The inserts are set inside pre-made hoes ( ) in the plate.

Device for treating sheet-like material using pressurized water jets

The invention concerns a method which consists in continuously: producing by carding ( ) a web ( from chemical fibers; subjecting the resulting web ( ) to a hydro-entanglement using water jets, treatment which consists in: (a) consolidating the web ( ) by the action of a first series of water jets ( ), the web ( ) being supported by a drum ( ) comprising micro-perforations; (b) subjecting the consolidated web ( ) to structuring, by the action of one or several series of water jets ( ); depositing on the surface of the resulting structured lap ( ) natural fibers ( ) by pneumatic layering ( ); subjecting the resulting complex ( ) to the action of another series of water jets ( ) acting on the surface covered with natural fibers.

Growing community of inventors

Saint Nazaire les Eymes, France

Frédéric Noelle

Growing community of inventors

Saint Nazaire les Eymes, France

Fr&eacute;d&eacute;ric Noelle

Frédéric Noelle