Abstract: The invention relates to a suction device for liquids in hydroentangling machines, in which more than one water bar, which generate jets of liquid, are allocated to the exterior of the suction device. The suction device consists of a suction tube comprising one or more axial suction openings for each water bar, said openings being located along the working length of the tube. The liquid is sucked from the allocated water bar through said openings as a result of the negative pressure that is created in the tube. According to the invention, the suction openings that extend over the entire working width are configured to be sealed in relation to each respectively allocated water bar.

Abstract: Water needling is used to constantly subject the entire surface of a width of a goods line to water jets. However, it is also advantageous for units of commodity goods that are to be consolidated and optionally, if a cover nonwoven supporting these goods only needs to be consolidated around them or if a cover nonwoven is to be bonded around the goods. All possible patterns, such as line or strip consolidation, are advantageous. This is made possible by the invention, which provides for measures which specifically control, e.g. partially impede and/or interrupt the flow of the water jets from a water beam. This can occur by means of cover panels which advance with the line, supported by a screen or by means of a screen alone. Individually movable, computer-controlled nozzles are also advantageous for partial consolidation.

Abstract: A hydrodynamic needling apparatus for use on a textile web moving in a longitudinal web-travel direction has a first array of needle-jet orifices emitting respective needle-jet sprays extending in the travel direction between the respective orifices and the web, the array extending transversely across a full transverse width of the web at a substantially constant spacing therefrom with the sprays forming an angle greater than 0° and less than 90° with the web-travel direction. There is a similar second array of needle-jet orifices, but with it the orifices are directed at the same angle but oppositely to the sprays of the first array. Thus the sprays of the first array are directed to one side and the sprays of the second array to an opposite side from the respective arrays.

Abstract: A device for the hydrodynamic treatment of a fabric, or also a knitted fabric, of a certain width, with a jet bar and a jet strip arranged in it with a multitude of orifices arranged closely adjacent to each other for the formation of a water curtain during the passage of hard water jets that are directed at the threads and their crossing points of the fabric, or such, is already known. According to the invention it is now provided that for the shifting, spreading, evening out, and, if necessary, also for the splitting of the fibers of the threads, the jet bar is aligned at an even distance across its length, but laterally to the longitudinal direction of the product web, and across its entire effective width, and that additionally all jet orifices of the jet strip are directed not perpendicularly, but at an angle lateral to, and therefore the water jets also being lateral to, the product web.

Abstract: Water needling is used to constantly subject the entire surface of a width of a goods line to water jets. However, it is also advantageous for units of commodity goods that are to be consolidated and optionally, if a cover nonwoven supporting these goods only needs to be consolidated around them or if a cover nonwoven is to be bonded around the goods. All possible patterns, such as line or strip consolidation, are advantageous. This is made possible by the invention, which provides for measures which specifically control, e.g. partially impede and/or interrupt the flow of the water jets from a water beam. This can occur by means of cover panels which advance with the line, supported by a screen or by means of a screen alone. Individually movable, computer-controlled nozzles are also advantageous for partial consolidation.