Abstract: A hybrid cord of at least two multifilament yarns twisted together is described, where the first yarn is a viscose multifilament yarn and the second yarn is a non-metallic multifilament yarn composed of a material that is not identical to the first multifilament yarn. The viscose multifilament yarn is conditioned in the standard climate in accordance with DIN EN ISO 139-1:2005, and has a yarn linear density <1100 dtex and a breaking tenacity of ?45 cN/tex. The hybrid cord has a cord linear density of ?3000 dtex.

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 of collecting a strand using an air stream dissipater comprises texturizing the strand with an air stream on a first side of the air stream dissipater, directing the texturized strand through the air stream dissipater and collecting the texturized strand in a container on the second side of the air stream dissipater. A system for texturizing a strand comprises a texturizer for texturizing the strand with an air stream, a container to collect and hold the texturized strand and an air stream dissipater provided between the texturizer and the container to dissipate excess air from the air stream and prevent the excess air from entering the container.

Abstract: A method of reducing crimp in woven sailcloth comprising applying heat to warp yarn or fill yarn prior to the yarns being woven into fabric and a method of making a sail comprising assembling panels of sailcloth comprising warp yarns and fill yarns, wherein at least one panel of sailcloth is prepared by applying heat to the warp yarn or the fill yarn prior to the yarns being weaved into fabric.

Abstract: A method of manufacturing composite yarn by doubling and twisting paper tape and back warp yarn in one process without doubling paper yarn and back warp yarn after fabricating the paper yarn using the paper tape, includes: passing paper tape unwound from a bobbin by external force through the bobbin in an axial direction of the bobbin, and rotating the paper tape together with additionally-supplied back warp yarn about the axis of the bobbin to twist the paper tape and the back warp yarn together.

Abstract: A spinning, drawing and texturing machine for the production of curled threads includes a spinning unit and multiple machine modules associated with the spinning unit. Each of the machine modules has multiple processing assemblies for drawing and curling one of the threads, and a spooling unit for winding the thread. The machine modules positioned next to one another form a longitudinal side of the machine. The processing assemblies and the spooling unit are arranged among each other at one of the machine modules such that a narrow machine partition (T) in a range of <800 mm occurs on the longitudinal side of the machine. The spinning unit has one or more spinnerets and one spinning duct within the machine partition (T) per machine module. The spinnerets are held in rows parallel to the longitudinal side of the machine.

Abstract: A fabric includes mutually transverse thread systems, with at least one of the thread systems including a differential shrinkage yarn C. The shrinkage yarn C has at least one effect component A that irreversibly elongates itself upon heat treatment, and at least one shrinkage component B that shortens itself upon heat treatment. The components A and B are bound together by nodes, wherein the number (y) of nodes per meter in the yarn C is predetermined as a function of the yarn count (x) of the transverse thread system so that the number (y) of nodes exceeds a minimum value and increases proportionally above the minimum value as a function of the yarn count (x).

Abstract: The invention provides a process for treating a polyester fiber comprising the steps of providing a bicomponent fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) which has been heat-treated at a first temperature and cooled to lower than about 70° C. and has an initial crimp contraction value and a developed crimp contraction value, applying tension to the fiber of about 0.001 to 0.088 dN/tex, heat-treating the fiber at a second heat-treating temperature no lower than about 75° C. and no higher than the first heat-treating temperature, cooling the fiber to lower than the second heat-treating temperature, and releasing the tension from the fiber to give a fiber having a reduced crimp contraction value. The invention also provides a bicomponent fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) having a reduced crimp contraction value of about 6% to 15%.

Abstract: The new invention proposes that filament yarns, in particular partially stretched yarns known as POY yarns, be subjected to stretch texturing via an air treatment nozzle. The air treatment nozzles are designed in miniaturized form, have a continuous yarn duct in which there open a plurality of transverse bores for the supply of high pressure air in the range over 14 bar, preferably within specific working windows between 20 and 50 bar. With the new invention, it was possible for the first time to process POY yarn via simultaneous stretch texturing using an air twister. The invention allows an individual thread as well as a parallel bundle of threads to be treated and permits for the first time the construction of a false twist stretch texturing bundle device with simultaneous air treatment of 500 to 1000 and more threads.

Abstract: An arrangement for transporting yarn through a heat setting chamber has a rotatably driven central mast which is equipped with transport belts arranged around the mast in the form of a polygon in cross section. At least one yarn is wound around the transport belts in loops by means of a winding flyer. At the latest when arriving at the heat setting chamber, the loops should have a larger circumference than the polygon formed by the transport belts for the purpose of forming a shrinkage reserve. This is achieved in that auxiliary belts, ending upstream of the heat setting chamber, are arranged in the area of the winding flyer, the speed of which auxiliary belts corresponds to the speed of the transport belts and which enlarge the polygon to the amount of the desired shrinkage reserve.

Abstract: Process for bulk-texturizing and simultaneous interlacing of medium or high-shrinkage multi-filament yarns carried out with a device in which the yarns are made to pass into single or multiple chambers where the yarns come under jets of steam or other gaseous fluid that cause simultaneously their shrinkage, bulk-texturizing and interlacing.

Abstract: Process for bulk-texturizing and simultaneous interlacing of medium or high-shrinkage multi-filament yarns carried out with a device in which the yarns are made to pass into single or multiple chambers where the yarns come under jets of steam or other gaseous fluid that cause simultaneously their shrinkage, bulk-texturizing and interlacing.

Abstract: A polyester multifilament synthetic yarn which has a low draw ratio and a bulk characteristic made by overfeeding the yarn in the range of 4-12% that provides a double plush fabric, when knit, that has a pleasant broken pattern look with at least a 25% increase in bulk. The yarn used is obtained by treating a low draw ratio polyester yarn in a hot relaxation and setting zone after drawing prior to take-up.

Abstract: A process for manufacturing a continuous dental floss brush comprising alternating portions of thread sections which do not stretch significantly under tension and brush sections which stretch under slight tension, includes the step of coating at least the thread sections of a reverse twisted high tenacity nylon yarn with a solution of polymer in a volatile solvent, the polymer being selected from the group consisting of nylon, polyurethane and mixtures thereof. The thread sections of the yarn are thereafter heated to vaporize solvent therefrom while the yarn is maintained under a tension of from 0.15 to 1N. In the humidifier assembly, having a housing which defines a humidifier zone, the brush sections of the yarn are exposed to a mixture of steam and gas, the steam and gas mixture having a temperature of from 130.degree. C.

Abstract: A method and apparatus is disclosed for heat-setting carpet yarn by conveying continuously running yarn through a heat-setting chamber. To facilitate production of variable texture yarn, a controllable oscillating yarn supply tube assembly is provided for laying down various yarn patterns on a conveyor belt which travels through the heat-setting chamber. The oscillating yarn supply tube assembly is configured to facilitate switch of production between straight-set and various highly crimped textured yarn patterns via simple adjustment of the drive motor which oscillates the yarn supply tube. The apparatus can be used for a new machine as well as for conversion kits for existing carpet heat-setting machines having stuffer boxes supplying highly crimped yarn to a conveyor belt.

Abstract: A method to provide a looped pile yarn having a high number of loops projecting therefrom. The yarn is produced by drawing and texturing a core and effect yarn with the effect yarn being supplied to the air texturing jet with a high overfeed in the range of 100-200%.

Abstract: A sealing unit for a heat treatment apparatus for textile threads comprises an upper roller (7) and lower roller (8) between which a conveyor belt (8) passes. The seal between the rollers and the frame (2) of the unit is formed by an upper (29) and lower sealing element (30) with PTFE covers (35) which slide along the rollers, and by two lateral plates (42) contacting the extremities of said covers and of the rollers. Each of said covers is divided into at least two elastically interconnected pieces (35a, 35b) so that the covering shortens when the lateral plates draw closer to each other due to wear against the roller extremities.

Abstract: The invention is directed to a process for producing bulked synthetic multifilament yarn comprising a plurality of continuous synthetic filaments having deposited thereon at intermittent intervals an adhesive polymer component having a melting temperature below that of the continuous synthetic filaments. The process comprises texturizing synthetic multifilament yarn to obtain desired bulk characteristics by directing heated yarn in a current of heated fluid against a yarn plug contained in a texturizing chamber, applying said adhesive polymer component in a molten condition to the surface of said yarn plug, and continuously discharging texturized yarn from said texturizing chamber at a lower linear rate than the feed rate of said yarn to said texturizing zone while said adhesive polymer component is still in a molten but solidifying state, resulting in bulked synthetic multifilament yarn having the adhesive polymer component deposited thereon at intermittent intervals.

Abstract: The installation for the heat-setting of textile yarns comprises a tubular heating and steam-treatment chamber (1) partially filled with water and connected at its opposite ends to two tubular cooling chambers, these chambers being traversed longitudinally by a movable belt (4) conveying the yarn to be treated. The belt (4) extends at a distance (D) above the longitudinal axis (X-X') of the heating and treatment chamber (1) which is between 1/10 and 1/6 of the diameter of the chamber. The width of said belt (4) is greater than 60% of the diameter of the chamber (1), and the water level (N) in the chamber (1) is situated at more than 1/10 of its diameter beneath the longitudinal axis (X-X') of this chamber (1). Use for increasing the productivity of the installation and for improving the quality of the treated yarn.

Abstract: The object of the present invention is the free retraction of thread spirals placed on a perforated conveyor belt during a heat treatment such as heat retraction or heat fixing of dyes. The device applies shaking movements or vibrations to a vertical component of the perforated belt, especially inside a heat treatment enclosure. It consists of an oscillating rotatable shaft transversely disposed inside the enclosure and applied to the lower surface of the belt. The shaft may have one or more plane surfaces, for example a rectangular transverse section.

Abstract: Potential bulky polyester associated bundles or yarns for woven or knitted fabric include spontaneously heat extensible multi-filament A and heat shrinkable multi-filament B. The associated bundles are interlaced at 20-100 interlaces/m. For multi-filament A, the following physical properties apply: <3 denier as a single bundle; 20-80% denier ratio content in associated bundles, wet shrinkage at 100.degree. C. (SHW (A))=0-5%, dry shrinkage at 160.degree. C. (SHD (A))=-15-0%. The properties pertaining to multi-filament B include: fracture tenacity>4 g/denier, denier ratio of 80-29% content in associated bundles, SHW (B)>5-60%. Additionally, SHD (B)-SHD(A)>5%. The invention also relates to processes for forming the bundles and for weaving the bundles into fabric.

Abstract: Synthetic yarn to be bulked and heat set is supplied to a plurality of ovens in coiled form and is subjected to an even hot flow of dry gaseous fluid to bulk and heat set the yarn as it passes successively through the bulking oven and the heat setting oven. Safety controls are provided to prevent damage to the yarn when the conveying system is shut down and the yarn is being conveyed through the system.

Abstract: Strand material, such as yarns, tow or film, is processed through a fluid treatment apparatus which utilizes a polylaminar stack structure to form an elongate strand processing duct which has a strand inlet, a strand outlet, and a duct cross section which changes both in breadth and in height between the inlet and outlet.

Abstract: The treatment of a filament cable in a device into which it is introduced, in which it is crimped, treated with a gas, and withdrawn, characterized by the fact that the cable is crimped using a crimping device which is operated gas-dynamically, which has been mounted into the front face of a device for the treatment of the cable with a gas, and is thus introduced into this device in the manner of a sluice, and is folded using a slide with an S-shaped section onto a gas-permeable, horizontally transporting base as a crimping cake, is treated there with the gas, and is finally withdrawn from the device.

Abstract: In conjunction with a heat-set apparatus for carpet yarns which incorporates a plenum chamber having a porous upper surface in combination with a forced draft system for recirculating the heating medium throughout the length of the heat-set chamber, an improved design of the plenum chamber and the distribution of the medium to compensate for a temperature gradient which has heretofore existed in the heat-set chamber resulting from the introduction of cooled yarn into the chamber. Such temperature gradient has been the cause of dye streaking which occurs when the yarn is subjected to relatively cooler temperature adjacent to the entrance to the heat-set chamber when the machine is stopped.

Abstract: Apparatus for shrinking thread having a spool with a speed control, a liquid tank and rollers for guiding thread into and out of the tank, a drive for drawing the thread off the spool and through the tank, a drying chamber, and rollers in the chamber for guiding the thread, a tension releaser between the drying chamber and the drive to relax tension in the thread, a thread wind-up, a speed sensor for sensing the speed of the thread, and, a process control connected to the speed sensor, and to the drive, and to the speed control to control their operation.

Abstract: The thermal shrinkage properties of yarn are measured by applying heat treatment to the yarn while it travels through a straight yarn path formed between a feed roller and a draw roller. The peripheral speed of the feed roller is set at a desired constant peripheral speed V.sub.1. The tension T of the yarn is detected at the downstream of the feed roller, and the peripheral speed of the draw roller is controlled at a speed V.sub.2 so that the detected tension T becomes equal to a desired preset tension T.sub.0 of the yarn. The thermal shrinkage S(%) is measured through the computation of S=[(V.sub.1 -V.sub.2)/V.sub.1 ].times.100. If the controlling of the peripheral speed V.sub.2 of the draw roller is effected so that V.sub.2 /V.sub.1 =a desired constant value, the detected tension of the yarn can be used for measuring the thermal shrinkage stress of the measured yarn.

Abstract: In an air jet texturing machine or the like for bulking a multifilament yarn with means to conduct the bulked yarn through a heating tube under relatively low tension at high speed, said tube having a nominal inner diameter which is more than 10 times the diameter of the bulked yarn and a length of more than 1 meter, the improvement wherein the yarn tube has at least one yarn encircling beaded segment with a radially inwardly protruding edge which reduces the inner diameter of the tube by at least 5% up to 50% of said nominal diameter.

Abstract: This invention discloses a yarn, and method and apparatus for making it, composed of a core component having yarn strength wrapped clockwise and counter-clockwise by wrapper components, wherein the core has a sinuous configuration and contains a greater length per unit of yarn length than the wrapper components. Optionally, the core component may be a newly texturized multi-filament yarn, wrapped according to this invention before being subjected to significant tension, thereby preserving much of the bulk that would otherwise be lost in winding or other tensioning of the texturized core in unwrapped condition.

Abstract: A method and apparatus for the continuous heat treatment of a carpet yarn or the like is disclosed, and wherein the yarn is advanced in loop form through a heat treatment chamber and then along a downstream accumulation zone. A control system is provided for insuring that all portions of the yarn remain in the heat treatment chamber for a predetermined residence time, and such that all portions of the yarn will possess uniform properties and appearance in a finished carpet. The control system continuously monitors the number of loops of yarn in the apparatus, and in the event that the number of loops either exceeds a predetermined maximum or is less than a predetermined minimum, a yarn severing mechanism located upstream of the heating chamber is actuated. By appropriate selection of the maximum and minimum numbers, all of the yarn downstream of the severing mechanism will be able to pass through the heating chamber in the predetermined residence time, and thus no off-standard yarn will be produced.

Abstract: A device for intermediate storage of thread having the following: a belt conveyor, a drive mechanism, a winding head, having a thread guide arranged along a circular path, through which thread, in the form of loops, is placed upon the front portion of the belt conveyor, in the feed direction, and having a device for taking off the thread at the rear section of the belt conveyor, also having a drive member for activating belt conveyor, which member is rotating in the feed direction and is coupled with conveyor belt, of belt conveyor, or is coupled with a drive member connected thereto through the area defined by the loops. The device can easily be realized mechanically.

Abstract: An inverting tow plaiter adapted to position tow onto a receiving end of a main conveyor in a series of overlying laps oriented to permit trouble-free removal of tow from the main conveyor discharge end. The plaiter comprises a continuous, moving canvas belt positioned above the main conveyor constrained to follow the downwardly extending semi-circular path, and a stationary housing spaced from the belt to define with the belt a curved chute of narrowing cross-section. The chute has a gap width at the chute upper end which is greater than at the chute lower end. Structure for depositing tow onto the canvas belt at the chute upper end in a series of overlying laps which extend transversely across the belt is provided.

Abstract: A flow of cleaning fluid is directed into the lower ends of the exhaust stacks of a yarn heat set machine, with the cleaning fluid being directed alternately into the stacks at one end of the yarn path and then into the stacks at the other end of the yarn paths for a predetermined time period, and then cleaning fluid is directed alternately into one cross manifold and then into the other cross manifold for the exhaust stacks for a second predetermined time period, and then cleaning fluid is directed into the fan of the yarn heat set machine for a third time period. Preferably, the cleaning cycle is initiated when the yarn heat set machine is hot from its normal operation.

Abstract: Static tow inverting apparatus for inverting the overlap of overlapping layers of a continuous length filamentary tow band of textile material deposited onto the surface of a moving conveyor in relaxed condition for treatment, such as in the thermal heat setting treatment of a band of tow which has been subjected to a mechanical crimping operation. The tow inverter comprises a pair of stationary plates which are disposed above the surface of a moving conveyor to receive a continuous length of tow in a plurality of overlapping layers thereon. The opposed surfaces of the spaced plates define a downwardly curving passageway for gravitational conveyance of the overlapping layers of tow through a reversing direction of movement to deposit the same on the surface of the moving conveyor with preceding layers of tow overlying succeeding layers of tow in the direction of movement on the conveyor.

Abstract: Indefinite strand yarn is steam and heat treated in an enclosure. The yarn travels in an indefinite length moving coil through a tunnel that extends through the enclosure, with steam being supplied to the enclosure and the exhaust pipes leading from adjacent the inlet and outlet of the tunnel to a blower for exhaust to the exterior of the enclosure. Periodically, the buildup of yarn filaments and partially solidified condensate on the interior surfaces are removed by spraying liquid solvent along such surfaces, preferably with nozzles that spray solid cones of liquid solvent axially down the various pipes and automatic timed controls for sequencing such spraying.

Abstract: Process and apparatus for producing a crimped continuous multifilament yarn by the sequential steps of air-jet texturizing to form multiple random filamentary loops, immediately pulling out metastable loops formed in the yarn without heating and without stretching or deforming the yarn filaments, next shrinking and heat setting the yarn at a temperature of about 150.degree.-245.degree. C., and then winding the yarn onto a spool at a predetermined yarn tension. The resulting spooled texturized yarn has valuable properties and characteristics in subsequent processing and textile operations.

Abstract: Static tow inverting apparatus for inverting the overlap of overlapping layers of a continuous length filamentary tow band of textile material deposited onto the surface of a moving conveyor in relaxed condition for treatment, such as in the thermal heat setting treatment of a band of tow which has been subjected to a mechanical crimping operation. The tow inverter comprises a pair of stationary plates which are disposed above the surface of a moving conveyor to receive a continuous length of tow in a plurality of overlapping layers thereon. The opposed surfaces of the spaced plates define a downwardly curving passageway for gravitational conveyance of the overlapping layers of tow through a reversing direction of movement to deposit the same on the surface of the moving conveyor with preceding layers of tow overlying succeeding layers of tow in the direction of movement on the conveyor.

Abstract: Device for the continuous relaxing of synthetic yarn, comprising a rotatable distributor carrying in a coordinated manner in torsional equilibrium and activated lengthwise several closed rotating rings, a relaxing oven having an outlet, the relaxing oven enclosing at least part of the rotating distributor, a fan at the outlet of the oven to invest the yarn by a current of air, fixed guides to guide coils of yarn on at least an initial tract of the closed rings, electrical resistance elements to heat gaseous fluid, a fan to force circulation of the gaseous fluid in said relaxing oven, a rack and pinion to adjust the vertical distance between centers of the closed rings, fixed guides to deform partially the coils unwinding and photoelectric cells to control the position of the reserve of yarn.

Abstract: A yarn conditioning plant for processing of yarn at high temperature is improved by provision of arrangements for enabling a plurality of yarn threads that have simultaneously been processed upon a single yarn transport to be wound individually upon separate spools. In accordance with a first preferred embodiment, a tension balancing means is provided which includes a potentiometer that is acted upon by the thread tension of yarn threads passing thereover so as to control the operating speed of individually driven spools. According to a further embodiment, the tension of the individual yarn threads is compensated by the use of two separate storage devices upon which the individual processed yarns can be separately wound in a manner so as to achieve a uniform tensioning thereof.

Abstract: A double layered yarn having a sheath and core structure is prepared through a roving process, drawing process or fine spinning process. The sheath portion of the yarn is composed of staple fibers which have a high thermal shrinkage in boiling water of at least 5%, and the blended fiber ratio of which is between 50% and 25%. The core portion of the yarn is composed of staple fibers which have a property being spontaneously extensible, and the blended fiber ratio of which is between 25% and 75%. The double layered yarn is subjected to a heat treatment in hot water, and a bulky spun yarn which comprises staple fibers A and B is obtained. The staple fibers A are concentrated toward the inside of the bulky spun yarn after they are shrunk. The ends of staple fibers B are held within the inside of the bulky spun yarn, and the intermediate portions of fibers B are bulged as a loop from the body portion of the bulky spun yarn, after the fibers B are spontaneously extended.

Abstract: A filament winding apparatus useful, for example, with a machine for heat setting filaments for tufted textile materials, such as carpeting. The apparatus includes two winding headers which are operated in synchronism for concurrently receiving two filaments from the heat setting machine and a tension device for applying uniform tension on both filaments as they leave the heat setting machine. A timing belt provides synchronism between the two winding headers and an anti-slip drive apparatus insures positive engagement of the drive rollers with the winding spindles in each header during the winding operation.

Abstract: A method for measuring continuously shrinkage and crimp development in a long continuous sample of yarn involves the steps providing a zero-tension loop, applying a standard tension, then developing crimp in a single downward pass through a hot air chamber providing a second zero-tension loop and thereafter retensioning it. The shrinkage and crimp development is calculated from differential speeds of rolls advancing the yarn.

Abstract: Apparatus for the continuous delivery of a yarn or the like in loose form, comprising a rotatable flyer for inserting the yarn into the flights of at least two rotatingly driven screw spindles which are retained in cantilevered and axially parallel configuration, axially parallel reversing pins being disposed between the spindles, wherein the axes of rotation of the spindles and of the reversing pins extend substantially horizontally and wherein the reversing pins extend beyond the free ends of the spindles into guide rods on which yarn loops, which are delivered from the free spindle ends and are suspended substantially perpendicularly, are gradually advanced by mutual interaction.

Abstract: A process for the continuous shrinking of textiles includes initially exposing the material to the effect of a hot treatment liquid prior to placing the material on a curved support, and then, to obtain complete shrinkage, allowing the same treatment medium to flow through the material, disposed loosely on the support, and thereafter drying the material and setting the material on a sieve drum under a suction draft. In this process a plurality of twisted yarn threads are shrunk in the wet state together in parallel, side-by-side relationship at temperatures of about 85.degree.-95.degree. C.; the threads are then cooled by cold water and, subsequently, are deposited without tension on a sieve drum subjected to a throughflow of a heated gas to further develop the thus-obtained shrinkage. During this heating step, the threads are initially gradually dried in a cooling temperature range of from 50.degree.-60.degree., compressed, optionally by differences in the speeds of successive sieve drums.

Abstract: A boucle yarn is prepared by relaxed heat treatment of a precursor yarn prepared by combination of a low shrinkage filament or yarn or monofil at the back of the front roller of a spinning frame with a roving of high shrinkage fibers followed by twisting to a twist multiplier of 1.5 to 4.0. The shrinkage differential between the high shrinkage fibers and the low shrinkage fibers must be at least 20%.

Abstract: The invention pertains to a device for forming and depositing loops of yarn in such a manner on an endless belt conveyor which passes through a yarn processing chamber, that the loops partially overlap and lie sufficiently free to be able to undergo any sort of processing. This known processing of the yarn may, for instance, consist of a heat processing, for instance by means of steam under pressure.

Abstract: A machine for dyeing, bleaching and drying pieces of fabric includes a generally circular, rotatable vat, an overflow box to which treating liquid is pumped from the bottom of the apparatus, the overflow box being positioned above the rotating vat, optionally a guiding and impregnation tube for carrying the fabric and treating liquid between the overflow box and the rotating vat, a roller for carrying the fabric to be treated and for recirculating such fabric between the vat and the overflow box, and a safety device for stopping movement of travel of the fabric when knotting or bunching occurs between the roller and the overflow box.

Abstract: In a process and apparatus for bulking, more particularly high-bulking, of textile yarns having fibers of different shrinkage characteristics including the step of and apparatus for temporarily heating the yarn sufficiently to obtain differential shrinkage and thus bulking of the yarn; the improvement of the steps of and apparatus for soaking the yarn with water and/or other liquid having dielectric properties similar to water while fully and evenly saturating the yarn throughout with a predetermined amount of such liquid, and applying microwave energy to the saturated yarn for heating of the yarn. With this process and apparatus, heating is uniformly applied throughout the yarn and an energy savings can be realized over conventional yarn bulking processes. This process and apparatus may be utilized in conjunction with a two-for-one yarn twisting apparatus in which the process is carried out and the apparatus is disposed between the steps of and the apparatus for twisting and taking-up of the yarn.

Abstract: Method and apparatus for handling textile yarn strands in which textile yarn strands subjected to a heat treating operation are continuously directed from the heat treating apparatus by a stream of air through an oscillating tube onto a moving conveyor belt to deposit and accumulate the yarn strand thereon in a substantially tensionless condition for cooling. The yarn strand is removed from the accumulated yarn on the belt surface in a direction generally parallel to the surface and to the direction of movement of the accumulated yarn thereon to minimize tangling of the yarn, and the strand is subjected to a cooling air stream directed oppositely to its direction of movement to detangle the same prior to collection on a package. The speed of yarn package take up is controlled by means of a photoelectric sensing device located above the conveyor belt to sense the amount of yarn accumulated on the belt, and to ensure that a predetermined amount of yarn is maintained on the belt during the cooling operation.

Abstract: Process and apparatus for producing a crimped continuous multifilament yarn by the sequential steps of air-jet texturizing to form multiple random filamentary loops, immediately pulling out metastable loops formed in the yarn without heating and without stretching or deforming the yarn filaments, next shrinking and heat setting the yarn at a temperature of about 150.degree.-245.degree. C., and then winding the yarn onto a spool at a predetermined yarn tension. The resulting spooled texturized yarn has valuable properties and characteristics in subsequent processing and textile operations.