Abstract: A fiber guide channel device for an open-end spinning mechanism with a fiber guide channel body, for fixation in an opening roller housing and having a receiving opening for a fiber guide channel insert in the region of a fiber guide channel entry defining a central fiber guide channel for pneumatically transporting individual fibers combed by an opening roller from a feed sliver to a high speed spinning rotor in a negative pressure rotor housing. The fiber guide channel body (14) is configured of a plastics material and the fiber guide channel insert (27) is manufactured as a sleeve-like annularly-closed component of a highly abrasion-resistant material.

Abstract: An apparatus and method for depositing synthetic fibers to form a non-woven web includes guiding the synthetic fibers by a blowing stream through a drawing unit for depositing on a deposit belt. Multiple guidance elements are arranged inside the guidance distance between a blast opening of the drawing unit and the deposit belt, and form a guidance channel above the deposit belt. The guidance elements form a channel opening at a distance from the blast opening of the drawing unit. In order to achieve constant strength in the deposition of the fiber strands, the distance between the outlet of the drawing unit and the channel opening of the guidance channel is larger than half the guidance distance, and the guidance width of an open space formed between the outlet of the drawing unit and the channel opening of the guidance channel is larger than the guidance channel.

Abstract: The invention relates to a method and a device for removing and drawing a synthetic thread to form a fully drawn yarn. The thread is formed by joining a plurality of extruded filaments and is guided by contact on the circumference of heated guide jackets of several driven galette pairs. In order to obtain a gentle and highly homogenized treatment of the filaments, the thread is guided in an S-shaped or Z-shaped thread course by a first galette pair having two guide jackets driven in opposite directions during the removal from a spinning zone and before the drawing. Thus, both sides of the thread can be brought directly into circumferential contact with the guide jackets for in order to heat the thread.

Abstract: The disclosure relates to a device for cleaning a functional surface for guiding or treating a material web, preferably a non-woven wed. The device includes a pivotably mounted roller body, a plurality of hollow cylindrical brush segments being disposed on the circumference thereof and positively connected to each other and tensioned between two adjusting rings disposed at the circumference of the roller body. According to various embodiments, in order to ensure secure tensioning of the brush segments regardless of the surrounding conditions, at least one of the adjusting rings is axially flexibly retained at the circumference of the roller body and a compression ring rotationally fixed to the flexible adjusting rings is axially tensioned against the roller body by means of at least one spring element, such that an axial force acting on the brush segments is generated.

Abstract: The improvement relates to a bottom holder for winding up a thread, wherein a bobbin case can be slid onto a protruding bobbin spindle. In order to catch and clamp a thread on the circumference of the bobbin spindle at the beginning of a bobbin travel, a thread catching device and a thread clamping means are provided at a free insertion end of the bobbin spindle. In order to both securely clamp and automatically release the thread end when sliding off a bobbin, according to the improvement, the clamping means is formed by a hollow cylindrical clamping bushing, an outer cone thereof being fitted into an inner diameter bounded by catches, such that a clamping slit substantially axially oriented and open toward the insertion end of the bobbin spindle is formed between the clamping bushing and the catch.

Abstract: Techniques are directed to godet unit for guiding a multifilament thread, including a driven godet of an auxiliary roller or a second godet, from which the thread can be guided with multiple loopings, and including a mingling device for air-mingling the thread. The godet and the mingling device are provided in the form of a combined assembly.

Abstract: The invention relates to a method and a device for producing a grass yarn for artificial turf. A film is produced from a polymer material in an extrusion process and divided into individual strips. The strips are crimped before being coiled into spools. The aim of the invention is to achieve a structure which particularly matches natural grass. According to the invention, this is achieved in that the film or the strips are fibrillated by a needle roller before crimping and the strips are separated after on and individually crimped independently of each other.

Abstract: A device for drawing melt-spun filaments for forming a spunbonded fabric includes at least one guide member. The filaments are guided through a slot-shaped nozzle, onto which compressed air is applied, and which conveys the filaments through the drawing nozzle. Guide members are provided on both sides of the slot on the base of the slot-shaped outlet, which cause a uniform structure of the fabric due to their shaping. This is achieved when a guide member has a plurality of notches parallel to the conveying direction, and the opposite guide member has a plurality of bores, which passively connect the space between the guide member with the environment.

Abstract: A device for melt spinning multi-component fibers including at least two melt inlets for introducing separately guided melt components is presented. The device includes a feed plate having a plurality of feed channels for distributing the melt components, a distributor block associated with the feed plate, and a nozzle plate adjoining the distributor block and including a plurality of nozzle bores, wherein the distributor block has several thin distributor plates stacked on top of each other and each have a hole pattern with multiple distribution openings. The thin distributor plates are configured inside the distributor block such that a plurality of melt channels form, which connect the feed channels of the feed plate to the nozzle bores of the nozzle plate. In order to implement high flow volumes, multiple distributor plates having identical hole patterns of the distribution openings are stacked in a tightly sealing manner inside the distributor block.

Abstract: A process and a device involves melt-spinning and cooling synthetic filaments. Therein, a plurality of filaments is extruded from a polymer melt and, after the extrusion, is guided into a cooling shaft for cooling. Within the cooling shaft cool air is blown, via a blower wall, into the cooling shaft, where, for cooling, the filaments are guided along the blower wall and at a distance from it. In order to obtain cooling adapted to the particular filament titer, the blowing onto the filaments can be set by selecting one of several operating positions, where to change the operating position of the blower wall it is moved in the direction towards the filaments or in the direction away from the filaments.

Abstract: The invention relates to a method and a device for melt spinning and cooling a plurality of monofilaments which are extruded through a plurality of openings of a spinneret and guided into a cooling bath. The removal process consists of redirecting the monofilaments within the cooling bath. According to the invention, in order to prevent adhesion and an oblique pull-off, the monofilaments are divided into multiple filament groups after extrusion, said groups consisting of multiple monofilaments, and the filament groups are individually redirected independently of each other within the cooling bath into multiple redirecting positions by separate redirecting sheaves.

Abstract: The invention relates to a method for catching and taking up as well as a winding machine for continuously winding up threads. In order to catch the thread on a winding spindle, two thread guides form a thread section upstream and downstream of the winding spindle. Preferably, said thread guides are simultaneously displaced in a synchronous manner during the catching process and in such a way that the thread section is guided vertically over the winding spindle. Preferably, the thread guides are simultaneously and synchronously displaced by coupling the thread guides to each other and displacing the same with the aid of a common drive unit.

Abstract: The present invention relates to a clutch (20) for torque transmission between a shaft (2) and a roller (30) which is arranged coaxially around the shaft (2), comprising pneumatically actuable means for selectively interrupting and/or producing a force flow between the shaft (2) and roller (30), wherein the clutch (20) is arranged within the roller (30) coaxially between the shaft (2) and roller (30).

Abstract: The invention relates to a device for depositing synthetic fibers to form a non-woven web. The fibers are transported through a take-off nozzle by means of an air stream in the direction of a depositing belt. The device is provided with a guide duct for guiding fibers from the take-off nozzle to the depositing belt, said duct having a mobile retaining flap on one end of a longitudinal side that faces the depositing belt. To obtain a depositing area on the depositing belt that is separate from the environment as the position of the retaining flap is modified, the retaining flap is formed by a support and an elastic sealing lip, which is held in frictional contact with the depositing belt.

Abstract: The invention relates to a device for needling a web of fiber, said device comprising at least one driven needle beam. A vertical reciprocal movement of the needle beam is carried out by a vertical drive unit and a superposed horizontal reciprocal movement is carried out by a horizontal drive unit or due to a phase adjustment by the vertical drive unit. A weight balancing device is provided for balancing the inertia forces of the crank mechanisms. In order to be able to balance both vertical and horizontal inertia forces in a simple manner, the weight balancing device is formed by at least one balance weight which is associated with the crank mechanism of the vertical drive unit and which is set-off by an angle in the range of <180° from an eccentric element of the crank mechanism.

Abstract: The invention relates to a method and an apparatus for producing a turf yam for artificial turf. According to the invention, several monofilaments or ribbons are produced from one respective polymer material in two parallel extrusion processes, the turf yarn being formed by combining several monofilaments or ribbons obtained in the first extrusion process with several monofilaments or ribbons obtained in the second extrusion process. In order to improve especially the elasticity of an artificial turf carpet made from said turf yarn, the monofilaments or ribbons obtained in one of the extrusion processes are crimped before being combined, the crimped monofilaments or ribbons and the flat monofilaments or ribbons being produced in parallel next to each other and being joined in a winding station by means of a tie thread.

Abstract: An axial bearing for a high speed open-end spinning rotor mounted without axial thrust in a support disc bearing arrangement has a static magnetic bearing component secured in a bearing housing with at least two axially polarized permanent magnet rings limited by pole discs, and a dynamic magnetic bearing component having ferromagnetic webs on the rotor shaft at the spacing of the pole discs. The static magnetic bearing component (27) is arranged inside a plastic bearing bush (30) and secured by a plastic closing lid (31). The front side of the closing lid (31) has a stop journal (50) forming an axial emergency operation bearing and the rear side has a conically widened fastening lug (51) which is elastically deformed as installed.

Abstract: The invention relates to a device for needling a nonwoven web having on the base thereof at least one needle bar comprising a needle board having a plurality of needles. The needle bar is held by a bar carrier on which a vertical drive engages for oscillating motion of the bar carrier for an up and down movement. A superimposed horizontal drive is also associated with the bar carrier, by which a back-and-forth movement is induced. The horizontal drive has two eccentric drives coupled to a horizontal guide. The eccentric drives are each formed by a connecting rod and a crankshaft coupled to a connecting head of the connecting rod. According to the invention, the connecting rods are coupled to the horizontal guide with the connecting rod ends thereof in a diagonal orientation, the center axes of the connecting rods forming an angle.

Abstract: A yarn sluice for sealing a pressurized yarn treating chamber in which a traveling yarn is thermally treated, comprises yarn guide elements in the region of a yarn inlet and outlet openings of the treating chamber forming a yarn guide channel sealed by the traveling yarn during operation. At least one of the guide elements is positionable for adaptation to the mean thickness of the traveling yarn in various predetermined positions. Means is provided for temporary adaptation of the yarn guide channel to yarn defects. At least one of the guide elements (26, 27) is steplessly adjustably mounted for adaption to the mean thickness of the traveling yarn (14). A sealing element (28), which can be placed on the first and the second yarn guide element (26, 27), extends along the yarn guide channel (25), for closing it and for reacting resiliently to defects in the traveling yarn (14).

Abstract: A method for piecing a yarn at a rotor spinning machine comprising plural spinning stations, wherein more than five piecers are successively produced in a measuring phase and coordinates of measurement values and associated measurement values from individual measurements of the piecers are evaluated for averaging and determining a fiber band function taking into account a drafting reduced for the measurement values, which reflects the fiber flow behavior in the form of the respective fiber band quantity supplied to the rotor as a function of the transport path of the fiber band feed. The speed of the fiber band feed is controlled in a delayed manner from the run-up of the yarn draw-off, dependent on the rotor speed, by the fiber band function, such that the fiber shortfall quantity being produced from the fiber band function is compensated by dynamic feed addition with respect to height and length.