Abstract: A duct that, in cross section, has one or more rounded portions is disclosed together with a method and a machine for producing it. The duct can be made from rigid foam panels with a facing on at east one side of the panels. A crimping element is used to form several substantially parallel indentations or crimps on a faced side of a panel, without breaching the facing, so that the crimped panel can be manipulated to form a section of duct with the crimps extending longitudinally. Depending on the number of crimps, the duct will appear more or less round in cross section although the crimped foam panels can be manipulated to have cross sections of different shapes such as oval. Adjacent duct sections may be joined, for example, with tape or bands, several of which are described.

Abstract: A crimping apparatus for crimping a filament bundle in a melt spinning process includes a conveyor nozzle and a stuffer box which is associated with the conveyor nozzle. For thermal processing, a processing unit, which includes a rotatable processing drum which, for guiding and temperature control of a thread plug, has a rotating drum wall, is disposed downstream of the stuffer box. In order to be able to carry out as gentle a processing of the thread plug as possible, the stuffer box is disposed axially parallel to the processing drum in such a manner that the thread plug can be infed in a straight run from a plug outlet of the stuffer box to the circumference of the drum wall. This allows the naturally acting weight force of the thread plug to be advantageously used for guiding the thread plug.

Abstract: The present invention relates to a process and a device for texturing yarns for rugs or carpet, upstream of a heat treatment unit. Process characterized in that it consists essentially of or comprises making, downstream of a rack, on at least one yarn, at least one microtexturing operation using a microtexturing machine, then depositing the yarn obtained at the outlet of the microtexturing machine, in bulk or in loops, in a free state, onto an intermediate device for accumulation and transport, carrying the yarn obtained to a downstream heat treatment unit.

Abstract: Intermittently colored yarns having an intermittent and random dye spacing pattern, and systems and methods of making the same, are disclosed. Such intermittently colored yarns exhibit higher quality and lower manufacturing costs over the known intermittently colored yarns. The intermittent coloring takes place while the yarn is in caterpillar form. Carpets made from such intermittently colored yarns exhibit enhanced aesthetics over carpets made from known intermittently colored yarns. Alternatively, a stain resist, colorless base dye, or bleaching agent can be applied in the same intermittent and random spacing pattern to the intermittently colored yarns prior to subsequent dyeing. This creates a mirror image like color effect to the resulting yarn.

Abstract: A device for maintaining the crimping of textile fibers or filaments during subsequent setting treatment, located in a line for treating filaments by crimping and setting having a crimping machine (1), whereby this device is connected to the outlet of the crimping machine (1) and consists of two perforated conveyor belts (2), between which is fed the plug of textile fibers or filaments (3) coming from the crimping machine (1) and which pass through a setting oven or other setting machine to arrive at a filament uptake area. The device is provided with a member (6) for maintaining the continuity of the pressure on the plug of textile fibers or filaments (3) at the outlet of the crimping machine (1) and during the entire setting operation, whereby this member cooperates with the perforated conveyor belts (2).

Abstract: The present invention relates to a process for producing a cellulosic fiber, in particular a lyocell fiber which has improved opening characteristics and therefore is particularly useful for blending with feathers, in particular with down, to such a fiber fill fiber and to the use of this fiberfill fiber in mixtures for bedding and clothing.

Abstract: A method and an apparatus involves crimping a multifilament thread, wherein the thread which is produced by melt spinning is compressed to a thread plug. The thread plug is cast on the circumference of rotating processing drum for thermal treatment and is wrapped around the circumference of the processing drum with many side-by-side wraparounds. Following that, the thread plug is unravelled in an unravelling area on the circumference of the processing drum into the crimped thread which is pulled of the processing drum. To obtain a continuous and regular unravelling of the thread plug with multiple wraparounds and mutual touching of the wraparounds of the thread plug, the thread is guided at a slant from the unravelling area of the thread plug such that a growing axial space appears between the thread and the thread plug, on the circumference of the processing drum, during increasing wraparounds of the thread on the circumference of the processing drum.

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 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: 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 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: 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 device for treatment of an elongated medium with at least two first rotational bodies, which are pivoted around predefined rotational axes, whereby the rotational axes are essentially parallel to one another, with at least two second rotational bodies, which are pivoted around predefined rotational axes, a first treatment chamber, which is arranged in a conveying route of the elongated medium between the two first rotational bodies and the two second rotational bodies, and a second treatment chamber for the elongated medium, which is arranged in the conveying route of the elongated medium after the second two rotational bodies.

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: An apparatus and a method for texturing blended synthetic multifilament yarns, wherein the blended yarns are each produced in parallel from a plurality of individual yarn components. The individual yarn components are withdrawn and drawn by a withdrawal means, with a guide means being associated to the withdrawal means for combining the individual yarns to the blended yarns. The blended yarns are separately textured, and to obtain for each of the blended yarns a combination of the individual yarn components that is as identical as possible, the individual yarn components are divided into groups, with each group being reciprocated by one of a plurality of individually controlled traversing yarn guides. The groups of the individual yarn components are guided independently of one another while being reciprocated, with each of the individual yarn components per group being respectively associated to the blended yarns.

Abstract: The invention provides an air opening jet for use in a process for making a rectangular structure made from a tow of fibers, such air opening jet including a housing, an air jet for moving the tow through the housing and opening the tow, and an accumulating chamber that includes at least one, and preferably two, perforated plates located in the path of the moving tow, and an air control arrangement for controlling the flow of air so that the moving tow is urged into engagement with the perforated plates to retard movement of the tow and cause it to properly accumulate in the accumulation chamber. The invention also includes methods for using the air opening jet apparatus to produce multi-tow band products, and products produced by such methods.

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: An apparatus and methods for handling and texturing yarn are provided. The apparatus preferably includes a yarn supply positioned to supply a plurality of strands of yarn, a false twister positioned downstream from the yarn supply for imparting a false twist to the plurality of strands of yarn, a yarn undulation former positioned downstream from the false twister for forming undulations in each of the plurality of strands of yarn, and a conveyor positioned to receive the plurality of yarn strands having undulations formed therein and for conveying the undulated strands of yarn downstream.

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: An apparatus and methods for handling and texturing yarn are provided. The apparatus preferably includes a yarn supply positioned to supply a plurality of strands of yarn, a false twister positioned downstream from the yarn supply for imparting a false twist to the plurality of strands of yarn, a yarn undulation former positioned downstream from the false twister for forming undulations in each of the plurality of strands of yarn, and a conveyor positioned to receive the plurality of yarn strands having undulations formed therein and for conveying the undulated strands of yarn downstream.

Abstract: The invention provides an air opening jet for use in a process for making a rectangular structure made from a tow of fibers, such air opening jet including a housing, an air jet for moving the tow through the housing and opening the tow, and an accumulating chamber that includes at least one, and preferably two, perforated plates located in the path of the moving tow, and an air control arrangement for controlling the flow of air so that the moving tow is urged into engagement with the perforated plates to retard movement of the tow and cause it to properly accumulate in the accumulation chamber.

Abstract: Machine for spinning and texturing by false twisting, in which the false-twist zone comprises a plurality of identical texturing stations arranged side by side on a common frame, each station comprising in order, with regard to the displacement of the thread (2) during its texturing treatment:a first delivery (3) associated, if appropriate, with a system for drawing the thread (2) and making it possible to deliver the thread to be textured;a heating device (4) followed by a cooling zone (5) for the heated thread;a false-twist spindle (6);a second take-up (7) for the textured thread emerging from the false-twist spindle (6);if appropriate, a third take-up (8) of the thread, downstream of which is arranged a second thermal treatment zone (9), and;a final take-up arranged immediately in front of the receiving members,wherein the feed of threads to all the texturing stations is carried out from means for the spinning and drawing of chemical threads, which means are mounted on said texturing machine, the threads p

Abstract: In the production of multicolored yarn from differently colored filament bundles, the individual bundles may be texturized collectively. Then they are separated again into crimped part-threads 11.3 through 11.5 and are compacted individually in after-compacting means 8 before these part-threads are jointly compacted in a collective compacting means 9 and subsequently are wound up as a yarn 12 in a winding device 10.

Abstract: In the production of multicolored yarn from differently colored filament bundles, the individual bundles may be texturized collectively. Then they are separated again into crimped part-threads 11.3 through 11.5 and are compacted individually in after-compacting means 8 before these part-threads are jointly compacted in a collective compacting means 9 and subsequently are wound up as a yarn 12 in a winding device 10.

Abstract: In the production of multicolored yarn from differently colored filament bundles, the individual bundles may be texturized collectively. Then they are separated again into crimped part-threads 11.3 through 11.5 and are compacted individually in after-compacting means 8 before these part-threads are jointly compacted in a collective compacting means 9 and subsequently are wound up as a yarn 12 in a winding device 10.

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 and method for the production of a multicomponent yarn which is composed of several multifilament strands with differing characteristics, such as color. The individual strands are drawn in parallel and simultaneously by a pair of godets following spinning, and then crimped by compression in an air jet crimping device. According to the invention, the individual strands are spread apart from one another prior to run-off from the drawing godet in such a way that the distance in the axial direction between the run-off points of the individual strands on the godet surface is increased. This spreading of the strands assures that the strands do not intermix prior to entering the air jet crimping device.

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 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: 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 process for treating a ply-twisted crimped multifilament yarn. The process involves adjusting the temperature and moisture content of the yarn prior to passing the yarn through a stuffer box which is essentially free of steam. Excess hot fluid is removed from the yarn, and the yarn's temperature is adjusted to a temperature in the range of about 40.degree. to 90.degree. C. before the yarn is passed through the stuffer box. The yarns may be used for making a textured saxony-type carpets having a tightly tailored surface texture.

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 textured yarn is directed through a path in which the textured yarn plug forms a loop in which the direction of the yarn plug is changed and the speed of the yarn plug is increased via a draw-off bobbin. The yarn plug within the loop is loosened and the resulting yarn is stretched to form a yarn which can be wound up. The deflection loop in which the yarn plug is loosened is stable depending upon an appropriate choice of speeds between the speed at which the plug is guided into the loop and the speed at which the yarn is drawn from the loop. The deflection loop need not be supported by any mechanical devices.

Abstract: A method and apparatus for producing multi-colored crimped yarns is disclosed, and which includes the steps of spinning a plurality of differently colored groups of filaments, subjecting the filaments of each group to a treatment liquid, and then combining the filaments to form respective strands. Each strand is then subjected to an air tangling process, then stretched and the strands are thereafter combined in a thermo-pneumatic texturizing process. This processing sequence produces multi-filament yarns with good color blending.

Abstract: An apparatus and process for providing crosslinked fibers or tows with non-symmetrical crimps. The process requires preheating precursor fibers or tows so as to soften the fibers prior to passing the fibers or tows through a horizontal stuffer crimper box to impart a crimp. The crimped fiber is then passed through a heating zone without stress or tension whereby the fibers or tows are carbonized.

Abstract: A continuous, high speed (greater than 800 meters per minute) process and apparatus enable the production of a multifilament carpet yarn having a degree of filament intermixture high enough so that a standard deviation of less than 6.0 results upon conducting a Standard Yarn Streak Potential Test, as described herein. The apparatus and process allow the production of a multicolored carpet yarn which exhibits a reduced tendency to streak and an increased retention of tip definition.

Abstract: Satisfactory crimps are formed in high tensile modulus filaments having a tensile modulus of elasticity of 5,000 kg/mm.sup.2 or more by mixing the high tensile modulus filaments with additional filaments having a tensile modulus of elasticity of 3,000 kg/mm.sup.2 or less, and compression crimping the mixed filaments.

Abstract: A continuous, high speed (greater than 800 meters per minute) process and apparatus enable the production of a multifilament carpet yarn having a degree of filament intermixture high enough so that a standard deviation of less than 6.0 results upon conducting a Standard Yarn Streak Potential Test, as described herein. The apparatus and process allow the production of a multicolored carpet yarn which exhibits a reduced tendency to streak and an increased retention of tip definition.

Abstract: The temperature of a heating fluid used in a yarn crimping zone is controlled in response to whether a yarn plug is detected at a predetermined point, and in another embodiment a fluid is heated, passed to a yarn heating zone and a yarn is heated in the zone in response to whether the yarn is being wound in a yarn winding zone.

Abstract: An improved method and apparatus for texturizing thermoplastic yarn. The process and apparatus are characterized by a unique control system which facilitates accumulatorless operation and which allows two or more yarns to be texturized at the same time and wound on the same winder spindle. The control system is adapted to sense relative high and low yarn tension and to control tension to control wound yarn length to ensure that equal lengths of each yarn are collected (wound) on the winder spindle without over tensioning the yarn and without intermediate yarn accumulation.

Abstract: A process is provided for space dyeing synthetic yarn in which the synthetic yarn, such as polyester yarn, wound upon a yarn package, is first treated by immersing the ends of the package into a solution of at least one sublimatable ink, thereby dyeing the yarn located at the ends of the package but leaving the yarn at the center of the package undyed, and then at least two ends from at least two such packages are passed through otherwise conventional drawing and texturizing apparatus. Each yarn so fed is intermittently dyed and undyed along its length, the color strength near the dye boundaries being attenuated and muted due to sublimation of the inks and diffusion and migration of the dyes through the yarn ends and into the package. By utilizing at least two feed yarn packages in such process having significantly different diameters and different colored ends thereof, very highly random dyeing effects are achieved in a knitted or woven fabric produced from such yarns.

Abstract: Process and apparatus for controlling a filament pad in the stuffing chamber of a pneumatic crimper and for imparting an improved filament cohesion to the crimped filament yarn within said crimper.

Abstract: Synthetic thermoplastic fibers are produced by drawing the fibers, applying a finishing agent to the drawn fibers, and crimping the fibers in the presence of steam in a crimping zone wherein there are present a defined first region of low but increasing steam pressure, a defined second region of substantially constant, relatively high steam pressure, and a defined third region of decreasing steam pressure. Superior crimped products are obtained having a more permanent bulkiness which resists deterioration during further processing and subsequent use.

Abstract: In the process, the strands, which are spun as a fused mass, are initially drawn, then preferably stretched, crimped or textured, and converted into helical windings. The helical windings are laid down on an endless conveyor formed by two conveyor belts laterally spaced from each other. The laid down helical winding turns are then cut between the two endless conveyors to produce two substantially identical fiber lengths from each helical winding turn. The melt spinning of the strands may be effected at such a high speed that the drawing of the filaments or fibers can be omitted. The helical winding turns, prior to cutting thereof, may be subjected to at least one after-treatment. The apparatus includes a rotary distributor into which the crimped strands are supplied substantially axially for conversion into helical winding turns, and includes endless belts tangentially engaging the helical winding turns to move the same downwardly onto the spaced pair of endless conveyor belts.

Abstract: A process for the preparation of texturized multifilamentary polyester yarn possessing a stable crimp, in which the yarn passes first through a crimping device comprising an injector where the yarn is subjected to a stream of hot fluid which separates the filaments, and thereafter through a stacking nozzle to cause crimping, characterized in that the fluid is fed in at a temperature below the second order transition temperature of the polyester yarn, which feeding temperature is usually between 95.degree. and 220.degree. C., and in that the stack, after it issues from the nozzle is kept in the compressed state, subjected in this state to a high pressure of the order of 20 to 200 kg/cm.sup.2, and kept at ambient temperature or subjected to a heat treatment at a temperature below the second order transition temperature of the polyester yarn, which is usually at a temperature of up to about 220.degree. C., for a period of time ranging from one minute to 150 minutes.

Abstract: Multifilament synthetic polymer yarn is texturized by passing the yarn in a gas stream to a diffuser zone to cause the gas to expand and the yarn filaments to splay open. The yarn filaments are then separated from the expanding gas stream towards a continuous smooth side wall surface defining one end of a bulking chamber. At this end of the chamber the filaments are impacted with each other and the smooth wall surface to form a compact yarn mass. This yarn mass is pushed into and through a slotted portion of the bulking chamber. Simultaneously the gas passes through the yarn mass initially formed in the chamber and then discharges laterally from this mass as it is pushed into the slotted portion.

Abstract: Multifilament thermoplastic synthetic yarn is textured by an improved process involving propelling the yarn through an energy tube by superheated steam to strike, at an oblique angle, an unyielding barrier within a chamber in which the yarn then forms a plug on a moving perforate surface. The improvement comprises heat-setting the yarn, before the texturing operation, at constant length to the point that its density increases to at least 50% of the difference between that of undrawn amorphous yarn and the maximum normally attainable in such yarn; and feeding the resulting yarn hot into the energy tube whereby tendency toward shrinkage of the yarn resulting from undergoing crimping is reduced, and/or a higher texture level is obtainable at given temperature of the crimping operation.

Abstract: A continuous synthetic filament yarn is processed by crimping, entangling, and straightening the yarn. The yarn is straightened by heating under tension, resulting in a yarn that can be used in its straightened form and later bulked by a subsequent process such as dyeing, boiling, heating, etc. The length of a yarn plug formed by crimping is controlled by controlling the temperature of the yarn.