Abstract: In order to produce a nonwoven fabric having elastomeric properties spun filaments (1), consisting preferably (but not essentially) of cellulose material such as cellulose acetate or solvent spun rayon, not in yarn formats, are corrugated or crimped in an overfeed process, as in stuffer box (6), into stabilized three dimensional batts. A proportion of filaments (3) of a thermal memory material, such as modified polyester, in a stretched format are included. The resulting batt is then subjected to controlled hydroentangling and a controlled heat treatment to yield three dimensional nonwoven fabrics with elastomeric properties due to contraction of the stretched filaments. Elastomeric memory material activated to shrink by ultrasonic treatment may be used in place of thermal memory material. The elastomeric properties can be adjusted to suit end-use requirements and applications are envisaged in the medical and hygiene areas.

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: An apparatus for the water-jet treatment of a textile web has a perforated drum having an outer surface, a coarse-mesh screen overlying the outer surface, and a fine-mesh screen or tube overlying the coarse-mesh screen. This fine-mesh tube has annularly continuous filaments shrunk so as to press the coarse-mesh screen against the outer drum surface.

Abstract: Nozzle beam on device for generating liquid jets for jet interweaving of the fibers of a fiber path, comprising an upper part that extends over the operational width of the fiber path, and a lower part that is attached to it in liquid-sealed fashion, wherein a) a pressure chamber is arrayed in the upper part over its length, to which liquid under pressure is fed, and b) a pressure-distributing chamber is provided parallel to chamber (a), which is connected with chamber (a) via liquid flow-through boreholes situated in an intermediate partition, and c) on the lower part, a nozzle strip having boreholes for the nozzle chamber is supported in liquid-sealed fashion, and d) (b) on the area that lies opposite the liquid flow-through boreholds runs out into a slot that terminates at the boreholes of the nozzle strip, and e) in (b) between the liquid flow-through boreholes and the slot, a baffle is situated over the length of the slot, which over its length and over its cross section is situated in (a) so as to allow

Abstract: A water-permeable drum assembly for the hydrodynamic needling of textile materials in order to reinforce and structure the textile materials or refine the surface thereof has an intrinsically stable sieve drum provided with apertures and an outer tubular sieve-type cloth made of intersecting wires and pulled across and fixed to an outer surface of the drum. The outer sieve-type cloth has a coating that stabilizes intersections of the wires.

Abstract: A nonwoven product is made by passing a fiber web longitudinally along a treatment path and preconsolidating it at an upstream location along the path. Then the web is fully consolidated by liquid jets downstream of the location at longitudinally spaced and transversely extending discontinuous strips each interrupted at least two break points. The web is then fully consolidated by liquid jets downstream of the location at least two transversely spaced longitudinally extending strips extending a full length of the web and crossing the transverse strips at the break points. Subsequently the web is cut up into pieces along the strips.

Abstract: The invention relates to a method for generating three-dimensional transparent patterns on a non-woven fabric or similar, whereby, for example, hot air is sucked through openings which form the pattern in the circumferential surface of a drum. The openings are straight or curved gaps instead of conventional holes and together with other openings form the desired pattern. The air or similar, flowing through the gaps, presses the fibres into the gaps and the vacuum on the inner side of the drum sucks said fibres onto the patterning.

Abstract: A method for producing three-dimensional colourless designs in a non-woven fabric or like material entirely bonded includes subjecting the fibers to a blowing process through openings, since the fibers in the openings are only displaced therein with limited depth, and are subsequently needle bonded against a supplementary support.

Abstract: Production of a non-woven tissue from wood pulp on a wet strip is known. The above has a cardboardy, paper-like feel to it. In order to achieve a web with sufficient resilience, the desired wood pulp fibres used to advantage in the hygiene industry for absorbing liquids are thus always mixed with chemical fibres as support fibres. According to the invention, a consolidated tissue with a soft feel and high fluid absorption is obtained by means of needling a non-woven pure wood pulp tissue with water.

Abstract: The invention relates to a device for treating web-type textiles, nonwovens or paper in a continuous stream, uses a gaseous treatment agent that circulates in the device. The product lies on the exterior face of a permeable drum (5), which is subjected to an induced draught and has two base sections (11, 12) on its front face, more precisely on a sieve-type or perforated surface (9), which covers the drum structure. A perforated drum jacket (15), whose edges are merely clipped into the two base sections (11, 12) extends between said base sections (11, 12). To achieve this, an annular groove (17) is machined into the base sections (11, 12). The edge of the sheet metal (15) and a ring-shaped clip segment (23) are inserted into said groove and are retained there by means of screws.

Abstract: The nozzle beam on a device for producing liquid jets in order to impinge said jets upon the fibres of a web of continuous material guided along the beam consists of a beam housing extending along the working width of the continuous web of fibre material, whereby two longitudinal bores placed on top of each other are accommodated in said housing and are separated from each other by means of an intermediate wall provided with continuous boreholes. The nozzle strip required to produce the liquid jets is mounted in a liquid-tight manner in the lower part of the housing and is cross-flown by pressurized water. In order to enable more needle water to reach the fabric than is usual with such a construction, two strips of nozzles are mounted in a housing and must be provided accordingly with pressurized water.

Abstract: The inner circumferential surface of a suction pipe must be periodically cleaned as well as the inner region of the suction slit and especially the webs between the suction holes of the suction pipe. The aim of the invention is to facilitate said cleaning process. To this end, a standard cleaning spray gun is provided with a long cleaning lance comprising a rotor nozzle on the end thereof. In order to clean the suction pipe, said lance can be passed through a hole on the front side of the fixed suction pipe. The dirt released and the remaining suction water can thus be evacuated on the other front side in a problem-free manner.

Abstract: There are known drum jacket constructions that consist solely of perforated sheet metal. There are also known constructions, which, in order to increase the distance between the drum and the surrounding perforated sheet-metal wire gauze, consist of sheet metal with trusses configured e.g. as sheet-metal rings, or of honeycomb sheet-metal strips that are welded together, or of screwed constructions devoid of welding joints. The simplest solution for increasing said distance is a construction comprising a normal screen drum with struts bent into a U-shape that are screwed to the exterior, whereby the wire gauze lies on the external edges of said struts. Said drum however has a low buckling resistance, which is a required characteristic for the drying of tissue or paper. The novel drum jacket construction thus consists of an intersecting structure of sheet-metal strips, whose rings and strips are provided with corresponding insertion slots.

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 mote voluminous. Instead of a carpet, any other pile goods can also be stabilized in this fashion.

Abstract: Method of producing a composite nonwoven for receiving and storing liquids or the like, comprising a carded nonwoven, which is treated in order to consolidate it, and a pulp layer, such as a wood pulp fiber layer, applied to the consolidated carded nonwoven and brought into secure contact with same, characterised in that the carded nonwoven is consolidated dry before being coated with the super-absorbent material, then the layer formed from the pulp fibers is applied to this pre-consolidated carded nonwoven and everything is interconnected.

Abstract: In order to produce a nonwoven fabric having elastomeric properties spun filaments (1), consisting preferably (but not essentially) of cellulose material such as cellulose acetate or solvent spun rayon, not in yarn formats, are corrugated or crimped in an overfeed process, as in stuffer box (6), into stabilized three dimensional batts. A proportion of filaments (3) of a thermal memory material, such as modified polyester, in a stretched format are included. The resulting batt is then subjected to controlled hydroentangling and a controlled heat treatment to yield three dimensional nonwoven fabrics with elastomeric properties due to contraction of the stretched filaments. Elastomeric memory material activated to shrink by ultrasonic treatment may be used in place of thermal memory material. The elastomeric properties can be adjusted to suit end-use requirements and applications are envisaged in the medical and hygiene areas.

Abstract: A suction device for use in a textile machine, especially a water jet weaving installation has a slot between two glide strips for a transport device transporting the textile material that terminates radially inwards in a stationary suction tube into the thicker wall of which a suction slot is milled across the entire working length, thereby removing the need for bores having intermediate webs that are soiled by the lint suctioned off. The longitudinal slot in the suction tube is held at the desired distance by U-shaped straps that are distributed across the length of the slot. The straps are held on the suction tube by screws and are arrow-shaped in the zone of their base limbs so that the lint is unimpeded as it flows past this surface.

Abstract: The invention relates to jet flows on a nozzle beam for hydrodynamic water needling, formed inside a nozzle body which is supported as a component part on the nozzle strip. The aim of the invention is to ensure long-term secure positioning of the sapphire or similar material on the nozzle strip. According to the invention, the nozzle bodies are respectively held in place in a nozzle body support which is introduced via a foot part with a smaller diameter smaller into bores in the nozel strip.

Abstract: It is known from the art to mount a wire gauze (10) onto a drum (1) with a permeable drum jacket (8) under pretension, for example, for allowing air to flow through a web of material placed on said drum, said wire gauze optionally being disposed even at a distance to the drum jacket surface. The air thus flows more evenly across the surface of the web of material and no visible marks on the web of material, caused by the contact of the web with the intermediate space between the holes of the drum, occur. The wire gauze has to be elastically fastened on the front faces of the drum to compensate also for thermal stresses. According to the invention, preferably U-shaped spring elements (11) extending radially to the axis of the drum are fastened on the front face of the drum and on a tensioning ring (13) for the gauze provided on the level of the drum outer diameter.