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:
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:
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:
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. 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:
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 hollow cylinder is fastened at its outer circumference when the cylindrical interior jacket is to be utilized for a treatment process. To produce this fastening, provision is made according to the invention for surrounding the end of the hollow cylinder by an elastic ring, said ring being pressed against the outer circumference of the hollow cylinder by a clamping disk that is annular and surrounds the hollow cylinder, said disk in turn being nonrotatably connected with the drive unit. The drive unit can then consist exclusively of a bearing ring connected by a gear at its outer circumference with a drive pinion of a motor.
Abstract:
A screen drum design is known whose drum jacket consists of axially extending sheet metal strips whose widths extend in the radial direction. These sheet metal strips must be permanently attached to the end bottoms to produce the drum jacket. According to the invention, this connection is made movable. For this purpose, a connecting element (17) is provided that consists of one or two connecting arms (18, 19) connected with one another so that they are pivotable with respect to one another, said arms being connected, with articulation at their free ends, with either sheet metal strips (13) or a centering ring (29) for the sheet metal strips, or with bottoms (11, 12) that are located at a distance from the ends of sheet metal strips (13) and/or centering ring (29). In this way, movement of the drum jacket relative to bottoms (11, 12) is always possible to compensate for dimensional changes resulting from temperature fluctuations.
Abstract:
The nozzle beam on a device for producing liquid streams for stream interlacing of fibers, for example of a fiber web guided along the beam, consists of an upper part that extends over the working width of the fiber web and a lower part fastened thereto in a fluid-tight manner. On the nozzle beam, on its lower part, a nozzle sheet is mounted with the holes for the nozzles in a fluid-tight manner by means of a sealing O-ring. This O-ring can be replaced without disassembling the lower part from the upper part. In order for this to be readily possible, in the nozzle beam, over its entire length and width and opposite the bearing groove for the O-ring of the lower part, in the upper part of the nozzle beam, a repair groove is provided which is dimensioned vertically slightly larger than the thickness of the O-ring. By means of the repair groove, an elongate strip on which a replacement O-ring is mounted can easily be inserted. The elongate strip carries the O-ring in a considerably stretched state so that its diameter is reduced. The bearing groove is made open at the ends of the nozzle beam so that the O-ring in the stretched state can be introduced, by means of a positioning strip that is inserted into the repair groove, into the bearing groove that is made swallowtail-shaped. Because of the narrowed outer cross section of the bearing groove, the O-ring which is then relaxed can no longer fall or float out of the bearing groove.
Abstract:
In dye applicators that operate by the pouring principle, it is known to store the liquid flowing over an overflow barrier in a liquid supply chamber located in front of it. To produce a dye applicator that can be adjusted to the desired working width, this liquid supply chamber is divided several times by a limiting wall and a liquid supply bore is associated with each of the liquid supply chambers thus formed. The liquid supplied through hoses to the individual supply chambers is distributed stepwise in such fashion that the respective supply openings are connected at both ends in the direction of the working width with first branch lines of the same length, at whose respective ends intermediate outflow openings are provided, to which second branch lines are connected in the same fashion on both sides in the direction of the working width, with said lines being shorter by half of the first branch lines and having a reduced cross section, with the outflow openings provided at the ends for example. According to the invention, the respective first branch lines are located in a plane parallel to that of the outflow openings and the liquid is distributed to the outflow openings through the second branch lines from the plane of the first branch lines to the plane of the outflow openings. In this manner, a fine striped pattern can be produced by dying.
Abstract:
Fiber fleeces made entirely of pure artificial (polymeric) fibers or mixed with natural fibers have to be solidified after formation by carding, or laying only in the case of filament fleeces. In the fleece according to the invention, which is particularly bulky and thus needs to be solidified, neither lower-melting binding fibers nor chemical binding agents are used. Also, the mechanical needling process which uses needles is eliminated because this reduces the bulk too severely. The desired bulk is retained by producing solidification by a single water needling process (when performed on one side), with the desired water pressure being no higher than 60 bars, preferably 20-30 bars.