Abstract: A system and method for automated control and improvement of the consistency of yarn texture in a yarn system. The system and method are configured to monitor, improve and/or control the operating conditions of the yarn system. A plurality of sensors sense the operating conditions and send the sensed conditions to a processor. The processor monitoring the system can cause adjustments to the operating conditions to be made if a condition is outside of a predetermined tolerance.

Abstract: The invention relates to methods for simultaneously producing crimped fiber strips in parallel, in particular filter tow strips, in a crimping machine (KM) having an inlet region (3), a squeezing zone (6) formed between two transport rollers (4, 5), and a compression channel (7), comprising the following steps: a) simultaneously feeding in parallel a plurality of fiber strips (1, 2) via the inlet region (3), wherein the fiber strips are guided separately in the inlet region (3), using a first separating device (31), b) simultaneously transporting and compacting in parallel the fiber strips in the squeezing zone (6) by way of the two transport rollers (4, 5), and c) simultaneously crimping in parallel the fiber strips in the compression channel (7), wherein the fiber strips are guided separately in method step b) by using a second separating device (61) and in method step c) by using a third separating device (71), and wherein the first, second and third separating devices (31, 61, 71) are designed such that t

Abstract: A system and method for controlling and improving the consistency of yarn texture in a yarn system. The system and method are configured to monitor, improve and/or control the operating parameters of the yarn system. A plurality of sensors sense the operating conditions and send the sensed conditions to a processor. The processor and/or a user monitoring the system can make adjustments to the operating parameters in a parameter is outside of a predetermined tolerance.

Abstract: An article comprising a yarn; wherein said yarn comprises: (a) a plurality of bulked continuous filaments; (b) a denier of about 200 to 2000; (c) a denier per filament of about 1 to about 20; and (d) a tenacity of about 2.0 to about 7.0 grams per denier; wherein said yarn is interlaced.

Abstract: Thread-crimping machines with enhanced throughput are detailed. One or more drive rolls forming parts of the machines may be grooved to group centrally the entering threads without materially adversely impacting driving and crimping operations of the machines. Thread-focusing components also may be employed upstream of the inlet areas.

Abstract: The invention relates to a filter tow strip, especially twin tow from cross-linked and crimped filaments which form at least two partial strips (12a, 12b) that are interlinked by a section of reduced cross-linking density (11), the linking filaments (13) being interlooped and/or interlocked in such a manner that the linking filaments form intersections (14). The filter two strip is characterized in that the maximum cross-cutting force of the partial strips (12a, 12b) does not exceed 20 cN on a length of approximately 20 cm of the filter tow strip (10) and/or the number of the Baking filaments (13) does not exceed 200 cross-locking and/or cross-looping filaments on a length of approximately 20 cm of the filter tow strip (10) when impinged with the maximum cross-cutting force.

Abstract: The present invention relates to multifilament crimped yarn comprising an aliphatic polyester and methods for producing thereof, and to carpets that are manufactured by using the crimped yarn. The present invention provides an aliphatic polyester multifilament crimped yarn for the carpets comprising an aliphatic polyester having a melting point of equal to or higher than 130° C., said multifilament crimped yarn having crimp elongation rate of the multifilament crimped yarn after being processed with boiling water of 3-35% and breaking strength of 1-5 cN/decitex.

Abstract: Crimping machine for chemical-fiber filaments with crimping chamber having an oscillating upper plate loaded with a closure force for imparting a pressure on the tow which passes through the crimping chamber, wherein the plates of the crimping chamber are mounted on respective supports through two or more linear guides provided with a roller or ball recirculation system. The longitudinal operating position is determined by two pairs of hydraulic cylinders, having an axis parallel to the linear guides, which maintain the plates, or a portion thereof, pushed against respective fixed abutments without the use of further mechanical or oleodynamic blocking elements. Load cells are arranged between the abutments and the plates, for detecting the variations of the tightening force during machine operation, the variations, representative of the variable longitudinal force imparted by the filaments of the tow being processed on the plates, are used for monitoring the quality of the crimp obtained.

Abstract: A textile stuffer box includes a housing having an entrance and an exit, and including cooperating chamber-forming surfaces defining an internal crimping chamber for receiving and accumulating a length of yarn. An adjustable sliding gate defines at least one of the chamber-forming surfaces adjacent the exit of the housing. A set screw releasably locks a position of the gate to selectively enlarge and narrow the exit of the housing, such that selective adjustment of the gate operates to control axial compression of yarn accumulating inside of the crimping chamber.

Abstract: The invention describes a process and an apparatus for the production of highly crimped polymer strips which are suitable for use in artificial turf surfaces, for example for football pitches, hockey pitches, tennis courts or golf courses, and are characterized by a high degree of strength, a large volume and a high elasticity. The texturing of the polymer strips is carried out by means of a stuffer box, wherein the polymer strips are laid on a cooling godet immediately after the stuffer box.

Abstract: The invention describes a process and an apparatus for the production of highly crimped polymer strips which are suitable for use in artificial turf surfaces, for example for football pitches, hockey pitches, tennis courts or golf courses, and are characterized by a high degree of strength, a large volume and a high elasticity. The texturing of the polymer strips is carried out by means of a stuffer box, wherein the polymer strips are laid on a cooling godet immediately after the stuffer box.

Abstract: A texturizing apparatus comprising a drive housing having a false twist inlet to allow a plurality of yarns to enter the drive housing, a pair of opposing counter-rotating nip rollers positioned downstream of the false twist inlet, each nip roller having a circumferential drive surface adapted to engage the plurality of yarns and at least one circumferential spacer surface, and means for applying compression to one of the nip rollers to force the at least one circumferential spacer surfaces of the pair of nip rollers toward each other. The drive housing further having a drive outlet positioned downstream of the pair of counter-rotating nip rollers through which the plurality of yarns may exit the drive housing. The texturizing apparatus can also include a stuffer box having at least one movable flapper door and a box inlet positioned proximate the box inlet and of a size to allow the plurality of yarns to enter the interior of the suffer box.

Abstract: The invention relates to a device for the compression crimping of a synthetic multifilament yarn, said device comprising a transport nozzle and a compression chamber. Said transport nozzle comprises a yarn channel by which means a yarn is guided to a compression chamber. Said compression chamber forms a section having a gas-permeable chamber wall, between a yarn inlet and an enmeshment outlet. According to the invention, the gas-permeable chamber wall comprises a friction surface consisting of material which is resistant to wear, on the inner side facing the yarn enmeshment. The constancy of the braking action produced by the friction on the yarn enmeshment can thus be significantly improved.

Abstract: A texturizing apparatus comprising a drive housing having a false twist inlet to allow a plurality of yarns to enter the drive housing, a pair of opposing counter-rotating nip rollers positioned downstream of the false twist inlet, each nip roller having a circumferential drive surface adapted to engage the plurality of yarns and at least one circumferential spacer surface, and means for applying compression to one of the nip rollers to force the at least one circumferential spacer surfaces of the pair of nip rollers toward each other. The drive housing further having a drive outlet positioned downstream of the pair of counter-rotating nip rollers through which the plurality of yarns may exit the drive housing. The texturizing apparatus can also include a stuffer box having at least one movable flapper door and a box inlet positioned proximate the box inlet and of a size to allow the plurality of yarns to enter the interior of the suffer box.

Abstract: A method and apparatus for producing a high-strength and low-shrinkage synthetic flat yarn. After melt spinning, the filaments are combined to a yarn and drawn. Subsequently, the yarn is compressed to form a plug under the influence of heat. This plug is transported over a certain distance, so that the yarn relaxes in a low-tension state and under the influence of the increased temperature. Finally the plug is disentangled under tension to form the flat yarn, which is wound into a package.

Abstract: A stuffer box yarn crimping apparatus for crimping a synthetic multifilament yarn 14. The apparatus includes a feed nozzle 2 which comprises a divided nozzle body, consisting of two molded ceramic components 1. Preferably, the molded ceramic components 1 are made in the form of two flat plates, and combined with precision via fitting means 5, 26, 8, 29. The molded ceramic components 1 abut each other via their two plane surfaces 4, and form together a nozzle tip 50, which extends into a plug channel 40 and, when put together, borders the entire channel with ceramic.

Abstract: A yarn texturizing system, apparatus, and methods of reducing production loss or increasing production speed in a continuous textured yarn production process are provided. The system includes a yarn texturizer to texturize yarn, a chute positioned to receive and guide the texturized yarn in the form of a bundle of texturized yarn from the yarn texturizer, a yarn compressor positioned to compress the texturized yarn against an upper surface of the chute at least after being initially received from the yarn texturizer, and a yarn conveyor positioned to convey the compressed texturized yarn.

Abstract: A method and an apparatus for stuffer box crimping a multifilament yarn consisting of one or more fiber bundles, wherein a conveying fluid is introduced into a yarn channel via a plurality of fluid feed channels, with each channel carrying a partial flow. The yarn is pneumatically taken into the yarn channel, and guided, and possibly twisted in the yarn channel by the conveying fluid, and subsequently advanced into a stuffer box chamber. Inside the stuffer box chamber, the yarn is formed into a plug which is compressed and advanced, with the conveying fluid emerging from the stuffer box chamber through side openings. To influence the actions of the conveying fluid on the yarn within the yarn channel, at least one of the fluid feed channels is configured such that the partial flows of the conveying fluid are introduced from the fluid feed channels into the yarn channel under the action of different overpressures.

Abstract: A method and an apparatus for stuffer box crimping a multifilament yarn, wherein the yarn being processed is pneumatically advanced by means of a conveying fluid into a stuffer box chamber and compacted to a yarn plug, with the conveying fluid leaving the stuffer box chamber through openings and being removed by suction. To be able to influence the yarn plug formation mainly by the suction stream, the invention provides for constructing the source of vacuum as an injector, which connects to a source of pressure via a pressure connection and to a suction line via a suction connection that precedes in the direction of the flow. As a result, the suction stream of the conveying fluid is generated by a compressed air stream, with the compressed air stream and the suction stream being jointly discharged as a common airflow.

Abstract: The instant invention is a stuffer box crimper and a method for crimping. The stuffer box crimper according to instant invention includes a pair of nip rollers, a pair of doctor blades, and a stuffer box. The pair of doctor blades is adjacent to an exit end of the pair of nip rollers. The stuffer box includes a stuffer box channel adjacent to the pair of doctor blades, and the stuffer box channel includes a surface consisting of a hard material having a hardness of at least 60 Rc. The method of crimping according to instant invention includes the steps of (1) providing a stuffer box crimper including a stuffer box having a stuffer box channel including a surface consisting of a hard material having a hardness of at least 60 Rc; and (2) crimping via the stuffer box crimper.

Abstract: A yarn texturizing system, apparatus, and methods of reducing production loss or increasing production speed in a continuous textured yarn production process are provided. The system includes a yarn supply, a yarn stuffing container to produce textured yarn periodically released therefrom, a yarn draw to draw yarn from the yarn supply to the yarn stuffing container, a yarn conveyor belt positioned downstream from the yarn stuffing container, and a yarn bundler positioned between the yarn stuffing container and the yarn conveyor belt to bundle the textured yarn prior to deposit onto the yarn conveyor belt.

Abstract: The invention relates to a compressive crimping device for a synthetic multi-threaded yarn. The thread is compressed by a texturing device to form a tangle of thread. The tangle of thread is subsequently cooled by means of a cooling device and unraveled to form a crimped thread. The tangle of thread runs through a heating area in the transition area between the texturing device and the cooling device, the heating area being essentially defined by the distance between the tangle outlet of the texturing device and a tangle receiving element of the cooling device. According to the invention, a means of adjustment is provided in order to adjust the distance and deflection angle between the tangle outlet and the element receiving the tangle.

Abstract: In a texturing system with a texturing nozzle and a first drum (22) connected thereto and a further drum (23), a thread is guided on the outlet side of a texturing nozzle (10) at the circumference of a drum (22) in the form of a strip (1?) by friction and at least in part in positive manner, so that the longitudinal speed of the strip (1) at the circumference of the drum (22) corresponds with the circumferential speed of the drum in the area of the guide (220), whereby, by means of a pressure difference in an air guidance system, the effect is achieved by pressing the strip (1?) onto the surface of the drum (22). Further, the thread is guided in relation to its conveying speed and packing density, by positive and friction guidance under the imposition of air, as far as an outlet point on the first drum, and is transfered onto a second drum (23), on which the strip is cooled, extended if appropriate, and passed on to further guide or conveying rollers (22?) respectively.

Abstract: The invention relates to webs or batts including polytrimethylene terephthalate crimped staple fibers and fiberfill products comprising such webs and batts, as well as the processes of making the staple fibers, webs, batts and fiberfill products. According to the preferred process of making a web or batt, polytrimethylene terephthalate staple fibers, containing polytrimethylene terephthalate is melt spun at a temperature of 245-285° C. into filaments. The filaments are quenched, drawn and mechanically crimped to a crimp level of 8-30 crimps per inch (3-12 crimps/cm). The crimped filaments are relaxed at a temperature of 50-130° C. and then cut into staple fibers having a length of about 0.2-6 inches (about 0.5-about 15 cm). A web is formed by garnetting or carding the staple fibers and is optionally cross-lapped to form a batt. A fiberfill product is prepared with the web or batt.

Abstract: A method and an apparatus for stuffer box crimping a multifilament yarn, wherein the yarn is conveyed into a crimping device in two steps. In the first step, the yarn is taken in by a conveying fluid stream of a first feed nozzle at a yarn intake speed. In the second step the yarn is advanced by a conveying fluid stream of a second feed nozzle at a second yarn conveying speed into the crimping device. In this process, the second yarn conveying speed is at least the same as or greater than the intake speed.

Abstract: The invention relates to a compressive crimping device for a synthetic multi-threaded yarn. The thread is compressed by a texturing device to form a tangle of thread. The tangle of thread is subsequently cooled by means of a cooling device and unraveled to form a crimped thread. The tangle of thread runs through a heating area in the transition area between the texturing device and the cooling device, the heating area being essentially defined by the distance between the tangle outlet of the texturing device and a tangle receiving element of the cooling device. According to the invention, a means of adjustment is provided in order to adjust the distance and deflection angle between the tangle outlet and the element receiving the tangle.

Abstract: A method and an apparatus for stuffer box crimping a multifilament yarn, wherein the yarn is conveyed into a crimping device in two steps. In the first step, the yarn is taken in by a conveying fluid stream of a first feed nozzle at a yarn intake speed. In the second step the yarn is advanced by a conveying fluid stream of a second feed nozzle at a second yarn conveying speed into the crimping device. In this process, the second yarn conveying speed is at least the same as or greater than the intake speed.

Abstract: A yarn guiding and texturizing apparatus and methods are provided. The apparatus preferably includes a yarn supply positioned to supply a plurality of yarn strands and a yarn guide positioned downstream from the yarn supply to receive the plurality of yarn strands in a position substantially parallel and spaced-apart from each other and to guide the plurality of yarns downstream along a path of travel. The apparatus also preferably includes a plurality of draw rolls positioned downstream from and adjacent the yarn guide for drawing the plurality of yarn strands from the yarn supply and through the yarn guide, a yarn stuffer box positioned downstream from and adjacent the plurality of draw rolls to receive the plurality of yarn strands therein and to texturize the plurality of yarn strands, and a conveyor positioned downstream from the stuffer box to receive the plurality of texturized yarn strands thereon and to convey the texturized yarn therefrom.

Abstract: A process for combining single color feed yarns, either dyed or melt pigmented, without twisting or heat-setting, to form an apparent space-dyed yarn product. The process includes the sequential steps of individually and simultaneously drawing two or more pre-spun, pre-colored singles yarns, at least one of which is differentially colored with respect to the other yarns; individually and simultaneously texturing the two or more yarns; individually and simultaneously entangling the two or more textured yarns in a first air-jet entangling process to form respective two or more entangle-sequenced yarns each having sequences of entangled and unentangled fibers; together air-jet entangling the two or more sequences of entangled and unentangled fiber yarns in a second air-jet entangling process to form a final apparent space-dyed yarn; and winding up the final apparent space-dyed yarn.

Abstract: A process for combining single color feed yarns, either dyed or melt pigmented, without twisting or heat-setting, to form an apparent space-dyed yarn product. The process includes the sequential steps of individually and simultaneously drawing two or more pre-spun, pre-colored singles yarns, at least one of which is differentially colored with respect to the other yarns; individually and simultaneously texturing the two or more yarns; individually and simultaneously entangling the two or more textured yarns in a first air-jet entangling process to form respective two or more entangle-sequenced yarns each having sequences of entangled and unentangled fibers; together air-jet entangling the two or more sequences of entangled and unentangled fiber yarns in a second air-jet entangling process to form a final apparent space-dyed yarn; and winding up the final apparent space-dyed yarn.

Abstract: Method and apparatus for texturing yarns that encompasses, after stopping the moving yarns during normal operations, increasing the opening size of the outlet of the stuffer box, and injecting a fluid through the interior of the stuffer box. The fluid entrains some of the yarns remaining within the interior of the stuffer box to move at least a portion of the yarns outside of the stuffer box.

Abstract: The crimper has a pair of feed rollers to supply fiber traveling therebetween. The feed rollers rotate at a first speed. A pair of outlet rollers receive fiber from the feed rollers and rotate at a second speed slower than the first speed. A pair of side walls sandwich the feed rollers and the outlet rollers. A pair of floating scrapers are supported by move with the feed rollers, the outlet rollers and the side walls. Fluid is supplied to and ejected from the scrapers such that a fluid bearing is created at least between the scrapers and the feed rollers. There are two pairs of outlet rollers with a belt rotating about each pair of outlet rollers. For each pair, a first of the outlet rollers is adjacent to the scraper and a second of the outlet rollers is displaced from the scraper. A space between the scrapers defines a crimping chamber. The first outlet rollers are moved toward and away from one another, thereby causing the crimping chamber to open and close.

Abstract: The invention relates to a method and an apparatus for spinning and crimping a multifilament yarn, and wherein a thermoplastic melt is extruded through a spinneret to form a filament bundle. The filament bundle is divided into a plurality of bundle components before being crimped. Each bundle component is separately crimped and combined to a multifilament yarn after being crimped. The yarn is subsequently wound to a package.

Abstract: A method and an apparatus for stuffer box crimping a spun multifilament yarn, wherein the yarn is packed in a crimping device to form a yarn plug. After cooling the yarn plug, it is unraveled into a yarn. In so doing, the position of the unraveling point is adjusted by varying the withdrawal speed of the yarn. At the same time when the withdrawal speed is varied, a signal is generated for controlling at least one of the parameters of the crimping device, which influences the formation of the yarn plug, so that it is possible to produce a uniformly crimped yarn.

Abstract: A process for combining single color feed yarns, either dyed or melt pigmented, without twisting or heat-setting, to form an apparent space-dyed yarn product. The process includes the sequential steps of individually and simultaneously drawing two or more pre-spun, pre-colored singles yarns, at least one of which is differentially colored with respect to the other yarns; individually and simultaneously texturing the two or more yarns; individually and simultaneously entangling the two or more textured yarns in a first air-jet entangling process to form respective two or more entangle-sequenced yarns each having sequences of entangled and unentangled fibers; together air-jet entangling the two or more sequences of entangled and unentangled fiber yarns in a second air-jet entangling process to form a final apparent space-dyed yarn; and winding up the final apparent space-dyed yarn.

Abstract: An apparatus and a method of stuffer box crimping a synthetic multifilament yarn, wherein the yarn is advanced in a conveying nozzle by means of a heated conveying gas into a stuffer box and compressed to a yarn plug. At the outlet of the stuffer box, a pair of rolls form a conveying gap for advancing the yarn plug and which has a width smaller than the cross section of the plug leaving the stuffer box so as to compress the yarn plug. The internal passage of the stuffer box is constructed with a cross section that increases in the direction of advance in such a manner that no significant cohesive force develops on the yarn plug, and the resistance to the forward pressure in the yarn plug resulting from the heated conveying gas is provided essentially only by the force on the yarn plug generated by its compression in the conveying gap.

Abstract: A method is disclosed for producing polyester fibers having uniform primary and secondary crimps. The method includes the steps of advancing fibers into a stuffer box having an upper doctor blade and a lower doctor blade, positioning the upper doctor blade and the lower doctor blade such that the doctor blade gap is broad enough to permit the formation of secondary crimps and yet is narrow enough to maintain primary and secondary crimp uniformity, and then applying a longitudinal force against the advancing fibers to impart uniform primary and secondary crimps.

Abstract: The present invention is directed to: a non-interlacing expirating yarn bulker comprising a body having an enclosed yarn passage extending therethrough. The yarn passage includes an inlet region, a throat region and an expanding region. A single pressurized fluid channel extends through the body and intersects with the yarn passage in the throat region. Cross sectional areas at certain defined locations in the yarn passage exhibit predetermined relationships. In addition, the inlet region and the pressurized fluid channel both are symmetrical about a common reference plane of symmetry;a replaceable wear member insertable into a body of a jet having a yarn passage with an inlet region and a throat region. The wear member has an upstream face, a downstream face, and a channel extending therebetween. The intersection of the channel and the downstream face of the member defines a wear edge.

Abstract: In the case of an arrangement for transporting at least one thread treated in a thread conditioning plant from a delivery roller pair to a transport belt which takes up the thread in the form of thread loops, an adapter is arranged downstream of the delivery roller pair, with which adapter it is possible to equip the arrangement as required with a stuffer box or an oscillating loop laying device. By simply exchanging an aggregate it becomes possible, depending on the type of operation required, to crimp and heat set threads or to treat uncrimped threads.

Abstract: An apparatus for the production of a multiple width fiber strip consisting of crimped interlaced filaments and having several zones extending in longitudinal direction of the fiber strip as well as at least one predetermined tear line (4) extending in longitudinal direction of the fiber strip, wherein the tear strength (daN) of the fiber strip, referred to the total denier (dtex) is at least about 1.7.times.10.sup.-4 daN/dtex, has a pair of transport rolls (8,9) for jointly transporting the supplied bands (1,2) and a crimping chamber (10.1, 10.1, 11, 12, 13, 14) which is arranged downstream of the pair of transport rolls (8, 9).

Abstract: A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn is a one-step process. It joins extruding, texturing, and interlacing to yield a yarn that may be tufted directly into carpet without further texturing or twisting. In another aspect, one or more additional strands may be inserted in the process. An apparatus for making the ready-to-tuft, mock space-dyed, bulked continuous filament yarn is described.

Abstract: A device for crimping synthetic thread bundles or bands has a stuffing chamber, a pair of rollers supplying a thread bundle or band into the stuffing chambers, a pressing disk covering a roller gap at end sides of the rollers, a clamping element including and axially reciprocating piston which presses the pressing disks against the end surfaces of the rollers, a rotary drive having a drive unit for producing a reciprocating movement and an apparatus for converting the reciprocating movement in a stepped rotation of the pressing disks, the clamping element being fixedly connected with the rotary drive to form a structural group, the structural group having a single rotatably supported and axially displaceable driven element which axially engages the pressing disk and is fixedly connected with it for joint rotation, the piston of the clamping element being clampable inside the structural group axially against the driven element, the rotary drive having a swivel motor with a swiveling shaft which is reciprocatin

Abstract: A stuffer box crimping unit provided with a crimping chamber and two feed rolls associated with the chamber and located upstream thereof, has pressure disks associated on both sides in side walls of the crimping chamber at the level of the nip between the two feed rolls. These two disks are not only made from a material provided for wear, but also from a separate carrier disk made of appropriate material. The carrier disk is a wear element shaped like a lid and made of the nonferrous metal intended for wear in the direction facing the pressure roll nip. This wear element is readily replaced and there is no need any longer for regrinding the wear surfaces of pressure disks so that the disks can be reused.

Abstract: A texturizing device for a yarn conditioning plant comprises a stuffer box, which is made from one piece. The cross section of the stuffer box channel is circular and predominantly constant; however, a taper and/or a yarn retarding lid can be arranged at the exit end of the stuffer box channel. In order to attain a crimping effect when the production is started, the stuffer box comprises at least one air inlet opening, which leads into the stuffer box channel, and which is directed against the channel inlet opening.

Abstract: In a crimping process in a crimping machine therefor, a compression force on an extended length of a transiting fiber bundle is exerted by and between means for maintaining a continuous and forced contact. The means for maintaining a continuous and forced contact comprise two closed belts, each of which runs around two motorized rollers travelling at a same velocity as the fiber bundle. Pressurized air or steam is injected into the crimping machine in a same direction as an advancement direction of the fiber bundles, but in an opposite sense thereto.

Abstract: A fiber crimping apparatus includes a relatively large diameter ring roller and an inscribed roller in contact with an inner surface of the ring roller. The two rollers are rotatable in the same direction at the same velocity and defined between contacting surfaces thereof a nip zone through which are to be fed bundles of fibers that are to be crimped therebetween. Each roller has thereon a respective side ring that is rotatable with the respective roller. The two rollers and two rings therefore define therebetween, at a downstream side of the nip zone, a stuffing box into which the bundles of fibers pass from the nip zone. A crimping resisting device is installed at a downstream side of the stuffing box and includes a movable member that is mounted to be movable in a widthwise direction of the stuffing box and of the bundles of fibers passing therethrough.

Abstract: Apparatus and method for crimping fiber, especially polypropylene fiber, includes feeding a tow through driven rolls into a stuffer box. Heat, in the form of steam, is applied to the tow prior to the rolls. The stuffer box includes doctor blades for cooling the tow. The doctor blades include a leading tip portion, through which compressed air is fed over the tow, and a trailing section including at least one internal compartment for a cooling fluid.

Abstract: An apparatus for crimping continuous tow of textile material and application of the finish to the crimped continuous tow, including a pair of rollers and a stuffer box chamber having two regions therein. In particular, the stuffer box chamber has a first region for crimping the tow and a larger second region for application of a finish to the tow. Using the novel apparatus to crimp the tow and apply finish thereto, improves adherence of the finish to the tow.

Abstract: A crimping apparatus for the continuous crimping of thermoplastic threads has a crimping nozzle with a feed channel, a nozzle orifice and a guide fork comprising two guide members and a plug feed roller with two parallel, interrupted, lateral guide means passing around its circumference, wherein the crimping nozzle and plug feed roller are positioned in such a way that, in a plug formation area following the nozzle orifice of the feed channel, a stuffer box is formed by the two lateral guide means and the two guide members of the guide fork, such that the thread is moved under pressure through the feed channel by means of a pressurized feed medium, which expands upon passing out of the nozzle orifice, wherein, in order to ensure an all-sided, rapid and uniform escape of the feed medium and a minimum friction surface between plugs and the stationary members bounding the stuffer box, the guide members of the guide fork are in the form of rows of spaced partial members, whose gaps extend parallel to the directio

Abstract: A method of processing an endless synthetic yarn is disclosed, wherein the yarn is withdrawn from a spinneret, and advanced into contact with a feed system which is operated under conditions which produce slippage between the feed system and the advancing yarn. As a result, a constant frictional force is exerted on the yarn irrespective of fluctuations of other parameters, and a precisely defined reduction of the yarn tension is achieved which facilitates the subsequent winding of the yarn into a package.