Abstract:
A device for hydrodynamic entanglement operates to compact the fibers of a fiber web made of natural and/or manmade fibers. The device includes a first endless belt supporting the fiber web, the first endless belt being guided under tension and stretched between at least two rolls, including a reversing roll, and a second endless belt likewise stretched between at least two rolls, the second endless belt being located opposite the first endless belt and traveling in the same direction as the first endless belt, a tight side of the second endless belt being located opposite a tight side of the first endless belt. The second endless belt is driven to turn in the same direction as the first endless belt. The tight sides of the first and second endless belts are directed conically toward one another along their lengths, so that the fiber web lying on the tight side of the first endless belt is increasingly compressed between the advancing first and second endless belts. A pair of rolls is provided for pressing the second endless belt against the reversing roll of the first endless belt for greater wrapping of the reversing roll by the first and second endless belts. An associated needling drum is provided with which at least one nozzle beam is associated across the working width and axially parallel thereto. An additional nozzle beam is provided between the pair of rolls for wetting the fiber web, water jets of the additional nozzle beam being directed against the back of and through the second endless belt and against the fiber web which is compressed and held between the first and second endless belts.
Abstract:
A permeable drum for wet or dry treatment of textile material, paper or such permeable materials of a certain width comprises narrow sheet metal strips or narrow webs. The sheet metal strips extend in an axially parallel direction. Connector members between the sheet metal strips are aligned in the peripheral direction. The connector members, also serving as spacers, are of a one-piece design and connect to adjacent sheet metal strips. Secure connection of the spacers to the sheet metal strips is effected by screws. Radially inward beneath the inner edges of the strips is a sheet metal jacket, provided with apertures, having its axis arranged in parallel to a longitudinal axis of the permeable drum. This additional sheet metal jacket causes a certain dynamic pressure of the air flowing through the permeable drum, so that the treatment result is rendered more uniform. Furthermore, the precision of rotation of the permeable drum construction is increased.
Abstract:
In the bonding of lightweight fleeces, there is the problem at relatively high feeding velocities of providing the fleece with the required amount of impregnating agent. Also, it has been found that the individual fibers of a fleece move with respect to one another during the impregnating step, and the fleece tends to disintegrate. In order to impart to the fleece, without great expenditure, a strength required for the bonding procedure, the provision is made to subject the fleece to a preliminary bonding step by wetting with cold water prior to application of the bonding agent, for example in a foam padder. It has been discovered under practical conditions that this minor bonding step is adequate for avoiding disintegration of the loose fiber layer within the nip padder during impregnation.
Abstract:
Laboratory-scale dyeing of samples of lengths of material must correspond to the continuous process conditions as executed in practice in order to obtain comparable dyeing results. For this purpose, the provision is made of joining the sample piece into a tube and of pushing same onto a roll which revolves continuously during dyestuff application as well as during the steaming procedure. For performing this laboratory dyeing-steaming cycle, it is advantageous to arrange the dyeing roll on a rocking lever pivotable from a dyeing position below the dyestuff applicator into a steaming position below a steamer hood. The steamer hood, for steaming purposes, need merely be moved downwards to immerse the dyeing roller in total into the steam atmosphere.
Abstract:
A highly permeable drum for the wet or dry treatment of textile material, paper or other permeable materials of a certain width consists solely of narrow sheet metal strips and narrow webs, the extension in width of which is oriented in the radial direction. The sheet metal strips extend axially parallel, and the spacers extend perpendicularly thereto. In accordance with further development of this known structure, the connecting-locking elements to be arranged between the sheet metal strips consist of elements extending from a space between two sheet metal strips into the neighboring space. The result is a simple, readily mountable, and more lightweight construction of the drum shell.
Abstract:
The permeable drum for the wet or dry treatment of textile material, paper, or other permeable materials of a certain width consists solely of narrow sheet metal strips or narrow webs. The sheet metal strips extend axially parallel, their extension in width being oriented in the radial direction. The webs are oriented in the peripheral direction and form parts of the connecting elements between the sheet metal strips, these connecting elements carrying the screen-type cover. The connecting elements, also serving as spacers, are formed of one piece and connect two neighboring sheet metal strips. Connection of the spacers with the sheet metal strips is achieved by headless screws. The proximate ends of the two screws succeeding each other in the peripheral direction are threaded into a nut which latter, in turn, can be encompassed by a fitting connecting element. While the web of the connecting elements is in each case fashioned to be narrow, the base should be broader in order to provide a good seal for the peripheral region of the drum that is not under a suction draft.
Abstract:
A device for wrapping a bale or the like with a wire or band held together by a tubular seal comprises an arrangement of units wherein wire is pushed through a metal tube held in readiness, then looped around the bale, and the free end of the wire is again moved through the metal tube. After the wire has been passed twice through feeding of the metal tube held in readiness; the wire is arrested by a limit switch; the portion of the wire end projecting out of the crimping jaws is bent around the metal tube; and tightening around the band is completed. Then the seal is produced by moving the crimping jaws toward each other and simultaneously severing the band from a supply coil. The wrapping operation takes place automatically by a holding device which holds the respectively next needed metal tube into the path of movement of the wire to be extended around the bale.
Abstract:
A dewatering device that effects suction removal of liquid from a length of fibrous material, such as textile material with several suction pipes or the like, each equipped with a suction slot and with wetting units connected upstream thereof. The suction pipes are arranged in series to treat the textile material and are located superimposed vertically in several tiers. For the zigzag-like guidance of the length of material, guide rolls are arranged one above the other in two rows aligned in a side-by-side relationship.
Abstract:
A continuous process and an apparatus for effecting, in direct succession a dyeing and backing of a carpet, for example, in the process, the dyeing step is performed with a minimum application of dyeing liquor, making it possible to effect backing wet-on-wet without a washing step and an expensive drying procedure. The dyeing step can also be directly preceded by the carpet manufacturing process within the framework of a continuous installation.
Abstract:
A fiber bale press is equipped with a hooping mechanism for applying wire-hoops to a fiber bale produced by the press. The press has at least one pressing plate and a counter pressure plate as well as a hoop material supply device. The hoop material is steel wire cut to suitable lengths for forming hoops. The steel wire ends are secured to each other by a sealing member, such as a tubular metal sleeve, which receives one steel wire end in each of its ends. The tubular metal sleeve is rigidly secured to the ends of the hoop forming wire by a crimping mechanism. Preferably the steel wires are hooped around a bale in a cross-over relationship so that at least the wire-hoops close to and in parallel to a bale edge are held in place by wire-hoops running perpendicularly to the bale edge. This mechanism avoids loops at the ends of the baling wire.