Abstract: A pile carpet after tufting or the like is usually provided on the back with a latex precoat for stabilization and then provided with a foam back or an additional jute fabric. This environmentally hazardous method and the problem of recycling the foam back as well as the latex layer can be avoided if a nonwoven is applied instead to the tufted back of the carpet by water needling. This is possible with water needling in that the solidification of the pile fibers in or on the primary carrier takes place but no nonwoven fibers reach the visible side of the carpet. The back layer to be needled can also be made thicker and more voluminous. Instead of a carpet, any other pile goods can also be stabilized in this fashion.

Abstract: A conventional method for the production of a composite non-woven fibre from at least one spun non-woven fibre and subsequent application of a wood pulp layer to the above for production of a hygiene product is known. Accordingly, the spunbonded non-woven fibre is hydrodynamically needled, before the application of the pulp layer, in order to increase the fluid dispersion properties. Consequently, the pulp layer can no longer be needled, as the pulp would be washed out through the non-woven fibre. Due to the required abrasion resistance a bonding of the non-woven fibre is, however, necessary. According to the invention, the above problem is resolved, whereby a non-woven fibre is compressed or calendered with compressed air, as a pre-bonding treatment, before coating with the super-absorbent material, then the woodpulp layer is applied and both are bonded with a hydrodynamic water needling, followed by drying. A further calandering can be added.

Abstract: Colored patterning of a web-shaped nonwoven or a composite made of a nonwoven and a fabric or knit is achieved by water jet needling. The nonwoven provided as the upper layer of two layers is provided with one or more colors or is colored or printed itself and is placed on a second nonwoven or a woven or one that has a different color. Then both layers are subjected to the water jets that displace the fibers, with the colored fibers in the first layer being displaced into the second layer to produce a pattern on the underside of the second layer. It is also possible, instead of colored fibers in the nonwoven of the upper layer, to move them when they are not colored into a second layer that can have any color.

Abstract: The conventional method for production of a multiple-layer, non-woven fibre is by means of the air-lay method, with thermal bonding using bonding fibres. The same method can be applied to a composite non-woven fibre with an intermediate pulp layer. This method of bonding does not reduce the later pilling wear and hardly influences the inner composition of the layers of the composite. According to the invention, the outer non-woven fibre is preferably made from a bicomponent fibre and treated by hydrodynamic needling for bonding, such that not just the surface is bonded, but also the layers are bonded to each other.

Abstract: Colored patterning of a web-shaped nonwoven or a composite made of a nonwoven and a fabric or knit is achieved by water jet needling. The nonwoven provided as the upper layer of two layers is provided with one or more colors or is colored or printed itself and is placed on a second nonwoven or a woven or one that has a different color. Then both layers are subjected to the water jets that displace the fibers, with the colored fibers in the first layer being displaced into the second layer to produce a pattern on the underside of the second layer. It is also possible, instead of colored fibers in the nonwoven of the upper layer, to move them when they are not colored into a second layer that can have any color.

Abstract: It is known to produce a colored pattern by a printing process or for example during weaving. The idea according to the invention is to produce a pattern by the water jets of a needling device in which, for colored patterning of a web-shaped nonwoven or a composite made of a nonwoven and a fabric or knit, the webs resting on a substrate moves past a nozzle beam located crosswise to the transport direction and are impacted by the water jets. The nonwoven provided as the upper layer of two layers is provided with one or more colors or is colored or printed itself and is placed on a second nonwoven or a woven or one that has a different color. Then both layers are subjected to the water jets that displace the fibers, with the colored fibers in the first layer being displaced into the second layer to produce a pattern on the underside of the second layer.

Abstract: Colored patterning of a web-shaped nonwoven or a composite made of a nonwoven and a fabric or knit is achieved by water jet needling. The nonwoven provided as the upper layer of two layers is provided with one or more colors or is colored or printed itself and is placed on a second nonwoven or a woven or one that has a different color. Then both layers are subjected to the water jets that displace the fibers, with the colored fibers in the first layer being displaced into the second layer to produce a pattern on the underside of the second layer. It is also possible, instead of colored fibers in the nonwoven of the upper layer, to move them when they are not colored into a second layer that can have any color.

Abstract: The use of saturated steam for the steaming of tubular fabric is known. However, this does not produce permanent fixing of the fibers. This only takes place at considerably higher temperatures, where the fibers are damaged, however. If the treatment is carried out rapidly, such as on a rotary screen and using a steam-air mixture, it is possible to carry out advantageous fixing also for elastic fibers at temperatures of e.g. 210° C. without damage. It is advantageous, if the tubular fabric is spread out at ambient temperature and treated in this spread-out state on the rotary screen.

Abstract: Device with a nozzle beam for producing fluid streams for striking the fibers of a web of goods by streams. The fluid spraying against the underside of the nozzle beam must be captured. For this purpose, a device is used Fat is located to the side of the nozzle beam over its length. A funnel-shaped slot is provided at the edge of the nozzle beam, at whose inner end a suction slot approximately 2 mm high is formed. If a sufficiently low vacuum is connected to the otherwise completely enclosed device, all of the drops from the underside of the nozzle beam can be sucked up safely for the goods to be needled, including a spray fog.

Abstract: A not-yet-bonded or only slightly bonded nonwoven staple fiber material cannot be delivered from the nip of a calendar roller pair to a following endless conveyor without support during transport. To provide this support, the invention provides for a supporting rotating element such as an endless conveyor or perforated drum, either of which is designed to be permeated by air from below flowing toward the element. This feature simultaneously achieves a cooling effect.

Abstract: The suction slit between two sliding strips for a transport device transporting the textile material is filled by a cleaning strip which has holes on one side to carry away the fluid to be drawn off and preferably on the other side as well, on the top of a separating strip, to determine the width of the suction slit. In this fashion, the fibers loosened by needling come to rest on the ribs of the holes in the cleaning strip and not on the ribs on the openings in the suction tube and thus can be removed quickly from the suction device by replacing the cleaning strip. In addition, the width of the effective suction slit can be changed quickly by replacing it by another cleaning strip in which the width of one or two separating strips is dimensioned accordingly.

Abstract: A device is known in which the bulky nonwoven arriving on a continuous belt for water needling is slowly compressed between a needling drum and another belt and at the same time is wetted by a first water curtain from the nozzle bank; its water jets first flow through the continuous belt and then the fiber web and ultimately the needling drum. There is a simpler and thus more economically producible device of this type when instead of the needling drum this compacting unit consists only of two continuous belts which however should be guided such that at the inlet the two working sides of the continuous belts slowly compact and press the incoming nonwoven, and then the belts lying on one another are moved past the nozzle bank as they are held pressed. Additional deflection rollers are used for this purpose.

Abstract: Method and device for producing perforated nonwovens by hydrodynamic needling. A nonwoven with a basically clean hole structure on a drum with plastic elevations can be produced by energy-rich water jets. Depending on the thickness of the fibers used in the nonwoven, however, certain fibers can nevertheless be stretched transversely across a hole. In order to avoid or eliminate this, the perforated nonwoven is subjected to singeing flames after drying.

Abstract: Each screen drum design has, in front of the rotating screen drum which transports the web, a stationary screen cover whose purpose is retention of the dry air coming from the fan, uniform throughput of the air through the screen cover, and a uniform drying process over the width of the web. The screen cover has a perforation whose permeability is adapted to the degree of drying. At the beginning of the drying process, when the web is not yet very permeably, the screen cover is to be perforated provided a smaller free air throughput surface and, as the degree of dryness increases, a larger free air throughput surface by making the holes larger in diameter or provided a larger number of holes per unit surface.

Abstract: Method and device for producing perforated nonwovens by hydrodynamic needling. A nonwoven with a basically clean hole structure on a drum with plastic elevations can be produced by energy-rich water jets. Depending on the thickness of the fibers used in the nonwoven, however, certain fibers can nevertheless be stretched transversely across a hole. In order to avoid or eliminate this, the perforated nonwoven is subjected to singeing flames after drying.

Abstract: A method and device produce nonwovens by hydrodynamic needling. A nonwoven with a basically clean hole structure on a drum with plastic elevations can be produced by energy-rich water jets. Depending on the thickness of the fibers used in the nonwoven, however, certain fibers can nevertheless be stretched transversely across a hole. In order to avoid or eliminate this, the perforated nonwoven is subjected to singeing flames after drying.

Abstract: A device is known for producing perforated nonwovens by means of hydrodynamic needling, with the perforation consisting primarily of sharply delimited holes in nonwoven of any dimension. The device consists of a smooth drum that supports and transports the nonwoven, said drum being provided with drainage openings to carry away liquid sprayed at high pressure by a nozzle beam from many outlets and having plastic elevations projecting from the plane of the smooth surface for producing the perforations in the nonwoven. The perforated nonwoven that can be produced by this device does not possess uniform strength in all directions. This uniform strength can be achieved simply by distributing the elevations nonuniformly over the drum to produce holes in both dimensions.

Abstract: A device is known in which the bulky nonwoven arriving on a continuous belt for water needling is slowly compressed between a needling drum and another belt and at the same time is wetted by a first water curtain from the nozzle bank; its water jets first flow through the continuous belt and then the fiber web and ultimately the needling drum. There is a simpler and thus more economically producible device of this type when instead of the needling drum this compacting unit consists only of two continuous belts which however should be guided such that at the inlet the two working sides of the continuous belts slowly compact and press the incoming nonwoven, and then the belts lying on one another are moved past the nozzle bank as they are held pressed. Additional deflection rollers are used for this purpose.

Abstract: Bulked and liquid-permeable fleeces are used in the hygienic products industry for diapers and bandages. These fleeces have the purpose of rapidly absorbing fluid secreted from the body, storing it, and slowly giving it up to the absorber located beneath, uniformly over the entire surface of the absorber. As a result of the idea according to the invention, a fleece is formed from shrunk and/or crimped fibers together with non-shrinking man-made fibers, and the fleece is then compacted by a hydrodynamic compacting method without using binders, after which the fleece is dried and the shrinking ability present in the shrinking fibers and/or the crimping ability present in the crimping fibers in latent form are triggered immediately and/or subsequently by the action of temperature. This fleece can be manufactured economically and meets all of the requirements imposed upon it.

Abstract: The air mixer defined herein serves for static mixing of a heated air stream in a flow channel of a circulated air stream upstream of a heat treatment chamber for drying textile goods or tissue webs for example. For this purpose the air mixer is provided with air mixing parts that consist of hollow bodies arranged in the flow cross section of the first air stream with spaces between them, said bodies being provided to receive and conduct the second air stream with inlet openings and outlet nozzles located endwise on one side.