Rieter Perfojet

Bruno Roche

Fr&eacute;d&eacute;ric Noelle

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

A mechanism for the treatment of materials by pressurized water jets includes a body ( ) for supplying water under pressure which includes a feeding chamber ( ) extending over the whole length of the body, and wherein water under pressure is fed to the feeding chamber through a filter ( ). The body also includes a distributing zone for distributing water under pressure over a whole treatment length against a plate ( ) provided with micro-perforations which define water needles ( ) directed against the surface (S) of the material to be treated. The material is supported by a carriage element subjected to a suction source eliminating the treatment water. Further, water transfer from the intake chamber ( ) to the perforated plate ( ), is done through a channel ( ) with a rectangular cross-section extending over the whole length of the injector, from the periphery of the feeding chamber ( ) up to the surface or the perforated plate ( ), wherein the spacing between the side walls ( ) of the channel and the height thereof produces a unidirectional and stable stream of water without turbulence.

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Voglans, France

Bruno Roche