Device for treating sheet-like material using pressurized water jets
AssigneeRieter Perfojet
InventorsFrédéric Noelle, Bruno Roche
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Abstract
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 (7) 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 (15) are provided inside inserts (13) which are made of a hard material. The inserts are set inside pre-made hoes (12) in the plate.
Claims12
A method for treating sheet material, the method comprising:
- providing a plate having a first hardness, the plate having a plurality of holes;
- providing a plurality of inserts, the inserts comprising a material having a second hardness, greater than the first hardness, and each insert having a microperforation;
- inserting the plurality of inserts in the plurality of holes;
- exposing the microperforations to pressurized water wherein the microperforations provide a plurality of water jets;
- and
- impinging the plurality of water jets upon the sheet material to provide at least one of cohesion and appearance modification to the sheet material;
- wherein the resulting sheet material comprises a sheet material having improved strength compared with sheet material treated in a similar manner but without providing the plurality of inserts.
Dependencies are inferred from the claim text.