Patent ID: 7356892

Claim:
Method of hydrodynamic compaction and/or consolidation and/or binding in the case of at least two superimposed nonwovens, tissues, or woven or knitted materials using fluid jets, whereby a fluid is sprayed from fine jet orifices provided in a jet strip of a jet manifold, the jet strip extending over a working width of the superimposed nonwovens, at a high pressure of up to 1000 bar against a fabric web advancing opposite the jet manifold, characterized in that the fluid jets emerging continuously, unmodified, from the jet orifices of the jet strip are briefly prevented from striking the advancing fabric web by reciprocatingly moving a plate into the flow direction of the fluid jets, the plate having openings or a profile cut into a front edge so as to leave sections, lines, or surfaces of the fabric web untreated by the fluid jets.