Abstract: A production process of mixed yarns and mixed yarns obtained from circular and or sustainable and or biodegradable textiles within any textile industry and or adapted in the machines within spinning mills. This makes possible a very large combination of different types of textile yarn mixtures and a wide range of weights of mixed sustainable and or biodegradable yarns, to meet and create new demands for sustainable and circular textile products. The process described for injection of compressed air is the combination and mixing of sustainable and circular and or biodegradable continuous filament yarns with biodegradable, and sustainable natural and/or artificial spun yarns, bringing technology to the products in line with the sustainability of the environment. This makes possible a definitive solution in ocean contamination by synthetic fibers and prevents much of the artificial textile fibers from fabrics and clothes, which release their cut fibers during industrial and domestic washing.

Abstract: The invention provides a method and a system for monitoring of yarn drawn axially from a bobbin (24a). It is desired to monitor one or both of remaining capacity of an active bobbin and transfer from one active bobbin 24a to the next. A free portion (30) of the yarn moves circumferentially about the bobbin as the yarn is drawn from it. The invention involves a sensor responsive to electromagnetic radiation arranged to sense the free portion (30) of the yarn and to provide an output which varies with a period P corresponding to the period of the circumferential movement of the free portion of the yarn about the bobbin (24a). The period P can be interpreted to provide the desired information.

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: 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: The invention relates to a method for acquiring and managing morphological data of persons on a computer network, wherein said data is used for producing and/or delivering ready-made individually dimensioned clothes by at least one of the plurality of manufacturers. The inventive method consists, at a preliminary stage, in forming a first data base (3) on human body profiles by storing standard data sizes in a first computer system, in acquiring (6, 10), at a subsequent stage, representative current data of the morphology of said persons by means of a computerized acquisition system and in selecting (5, 8) personal data nearest to current data (6, 9) of each person from standard data. Said method is characterized in that personal data (12) is selected on a second computer system from a second database (4, 7), wherein standard data is organized by size ranges according to each manufacturer.

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 method and apparatus for entangling two or more strands of yarn together in accordance with a pre-selected and changeable pattern so as to obtain twisted yarn with a selected coring level extending for a selected length of the yarn and other selected coring levels extending for various other lengths of the yarn so that a supply such as a package of finished yarn has a variable coring pattern which may be reproducible and possibly changeable.

Abstract: A yarn withdrawal apparatus for continuously withdrawing a yarn from a feed yarn package and then from a reserve package, where the trailing yarn end on the feed package is knotted to the leading end of the yarn on the reserve package. The transition of the yarn from the feed yarn package to the reserve yarn package is detected by a sensor, which includes a movable yarn guide, which moves during the transition from an inactive position to a signaling position in a first degree of freedom of movement. To prevent the movable yarn guide from rebounding when it reaches the signaling position, the yarn guide or an element connected thereto defines a second degree of freedom of movement which is different from the first degree of freedom of movement, and such that after the rebound the movement is of such a kind that a departure from the signaling position back toward the inactive position is geometrically not possible.

Abstract: A method and an apparatus for continuously unwinding a yarn from a yarn package which may be associated with a method and apparatus for texturing the withdrawn yarn. The yarn is withdrawn from a feed yarn package supported in a creel, and the trailing yarn end of the feed yarn package connects to a leading yarn end of a second feed yarn package (reserve package) by a knot-type piecing to achieve a continuous advance of the yarn for its treatment or processing. A sensor is provided which detects and signals the yarn change from the feed yarn package to the reserve package after the feed yarn package is unwound, and the signal may be used to control the texturing process.

Abstract: A method and an apparatus for continuously unwinding a yarn from a yarn package which may be associated with a method and apparatus for texturing the withdrawn yarn. The yarn is withdrawn from a feed yarn package supported in a creel, and the trailing yarn end of the feed yarn package connects to a leading yarn end of a second feed yarn package (reserve package) by a knot-type piecing to achieve a continuous advance of the yarn for its treatment or processing. A sensor is provided which detects and signals the yarn change from the feed yarn package to the reserve package after the feed yarn package is unwound, and the signal may be used to control the texturing process.

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: A cooling device for texturized yarns comprises a rotating drum equipped with a perforated wall, a unit capable of depositing the yarn exiting from a texturizing nozzle on the perforated surface, and a device capable of aspirating air from the inside of the drum, and elements are provided capable of circulating a refrigerating fluid inside the drum as well as elements, external, with respect to the drum, adapted to cool the air that is aspirated through the holes of the drum to cool the yarns.

Abstract: A device for crimping synthetic bundles or slivers of yarns, the device has a stuffing box provided with an inlet for a yarn bundle or sliver and including a movable press plate and a stationary counter plate opposite to the press plate, two axially parallel rollers disposed at the inlet for the yarn bundle or sliver and forming a gap through which the yarn bundle or sliver enters the stuffing box, a pivot arm pivotally mounted on a stationary pivot bearing, one of the two axially parallel rollers being rotatably mounted at a fixed position in a machine frame, another of the two axially parallel rollers being seated on the pivot arm so as to be rotatable about a rotation axis thereof and the press plate being pivotally connected to the pivot arm by means of a rocker so as to be pivotable about the rotation axis of the roller seated on the pivot arm or another rotation axis parallel with the rotation axis of the roller seated on the pivot arm, whereby the gap between the rollers is varied, a contact pressure d

Abstract: A heating apparatus for an advancing thermoplastic yarn, which is guided along a heated surface over heating ridges. Essential is that the heat flow to the yarn is variable, in particular by a change in height, a change in width of the heating ridges, and/or a change in the contact length with the yarn. In this connection, the heating ridges may be adjustable, and/or the path of the yarn may be made variable by yarn guides.

Abstract: A method of controlling the manufacture of false twist textured yarn characterised by adjusting non-isothermally in a closed loop the heat flux taken up by the yarn in tension to a specific yarn dyeability. Adjustment can be achieved by feeding back the output of a direct-acting yarn texture sensor to control at least one of yarn heater heat supply, yarn twist speed and yarn feed speed. The sensor is arranged to sense at least one of textured yarn speed, yarn temperature, yarn bulk and yarn tension. A very compact texturing line is possible when the control method is applied.

Abstract: A method for monitoring the gas flow rate through injector jets comprises determining the pressure in a drawing tube downstream of the injector jet. The injector jet comprises a feed funnel extended by an injector tube opening into a gas distributor chamber having a gas feed line. The chamber is connected by a curved surface of revolution to an outlet duct. A drawing tube is downstream of the outlet duct, and both the outlet duct and the drawing tube have longitudinal axes that coincide with one another. The downstream end of the injector tube is situated at the junction of the outlet duct with the curved surface of revolution. The drawing tube has a pressure measuring device.

Abstract: Method making it possible to control the temperature prevailing inside a high-temperature oven employed for the treatment of a synthetic yarn, especially during an operation of texturing by false twisting, said method consisting, in the case of a given substance (count and chemical composition), in modifying the temperature inside the oven as a function not only of the speed of travel of said yarn, but also of its count.It is characterized in that said temperature .THETA. in .degree.C. is determined from the general formula:.THETA.=aV+bin which:- V is the speed of travel of the yarn inside the oven in meters per minute (m/min);- a denotes a linear variation coefficient (or slope), itself a function of the count expressed in decitex (dtex);- b denotes a correction factor which is a constant whose value is also determined as a function of the count of the yarn in decitex (dtex).

Abstract: Threads made from thermoplastic materials are textured, in that they are heated by a delivery medium in a delivery channel and conveyed through an orifice into a stuffer box where they are stuffed to form a plug. In order to maintain plug formation constant, the orifice area is monitored in a sensory manner and the measured signals are used for monitoring purposes as a measured quantity in a control loop, in which the supply of damming back medium, the conveying away speed of the plug, the position of the stuffer box walls, or the supply of delivery medium are used as manipulated variables. The measuring signals produced by monitoring can be compared with thresholds to produce control signals corresponding to the comparison result for activating alarm, warning or stopping elements.

Abstract: A process and apparatus for guiding a continuous moving tow in synthetic fiber manufacture. The profile (the thickness distribution and width) and the position of the tow are continuously sensed in a non-contact manner and an appropriate electrical signal is generated. This electrical signal is used to control the profile and the position of the tow in such a way that its profile and position stay within predetermined target value ranges. The tow geometry is preferably sensed using a CCD camera, while the tow geometry is controlled using tow-engaging deflecting means. In this way it is possible to optimize tow profile and position, for example for entry into a stuffer box (FIG. 1).

Abstract: A method and apparatus for deregistering drawn crimped nylon multifilament tow includes the steps of stretching the tow under constant controlled tension at a temperature below the glass transition temperature of the nylon. The apparatus includes means for sensing the tension of the tow between the feed and draw sections of a stretching device and producing a signal representative of the tension sensed and a controller for changing the speed of the draw section actuated by said signal.

Abstract: A yarn texturing apparatus is disclosed which includes a nozzle having a yarn duct therethrough, and a perforated stuffer box at the outlet end of the duct. Heated air is introduced into the duct, and the air is heated by a heater which is positioned in the air supply line leading to the nozzle. The output of the heater is controlled by a temperature sensor which is positioned inside the stuffer box. Also, the nozzle comprises two confronting sections which can be separated to facilitate yarn thread-up, and a valve is provided in the supply line to divert the heated air to an exhaust line when the nozzle is opened. A second temperature sensor is positioned in the supply line and is operative when the nozzle is opened to regulate the output of the heater and avoid large fluctuations of its output.

Abstract: Method and apparatus to produce a plied, air textured continuous filament yarn by severing the supply yarn upon the detection of a drop in tension. When the tension in the yarn being processed drops, the position of the running yarn will be detected by a photocell unit which will actuate a cutter upon such detection to sever the yarns being supplied to the air texturing machine. The method and apparatus provide that the drop in tension has to occur for a predetermined length of time or occur a multiplicity of times before the cutter is actuated.

Abstract: A method of predicting changes in caterpillar length of yarn. The process is used in systems wherein yarn is passed through a set of hot rollers to bulk the fibre and is then contacted with an air jet to pull the yarn away from the rollers and impinge it upon a rotating drum. This drum comprises an endless textured screen forming a cylindrical outer surface of the drum and a frame to support the screen. A caterpillar is thereby formed on the screen. Air is then exhausted from the centre of said drum to draw air through the screen and cool the yarn. The yarn is then pulled off of the screen using take-up rollers. The process for predicting a change in yarn caterpillar length comprises a step of measuring during a given time period: the change in temperature of the exhaust air (dT1), the change in temperature of the yarn (dT2) after it is taken up from the drum and the change in tension of the yarn (dF) after it is taken up from the drum.

Abstract: A method of monitoring yarn quality in a yarn texturing process comprises measuring the velocity of the travelling yarn at two locations and comparing the measured velocities. At a first location the yarn tension is sufficient to draw out the crimp and at a second location the tension is lower such that the crimp is developed. Apparatus for performing this method comprises a measuring device to measure the peripheral speed of a driving roller which is part of a nip-feed device serving to feed a crimped yarn at the first location from a false twist device to a second heater of a false twist texturing machine. At the second location between the second heater and a third feed device of the machine is a second velocity measuring device which comprises an inlet tube, an outlet tube and two discs of brass which form spaced measuring stations spaced by an insulating body.

Abstract: A yarn texturing system employing an air jet yarn treating device which is supplied air under pressure which is automatically controlled upon start-up and shut-down of the yarn texturing system.

Abstract: A device for the crimping of synthetic yarns, bundles or bands, which includes a pair of pressure rollers and a subsequent stuffer box chamber having two plates, arranged parallel to the axes of the rollers, of which one is mounted at least partially movable for reducing the chamber area, and two lateral walls, closing off the chamber to a nip of the pressure rollers. At the level of the nip of the pressure rollers and in each case positioned adjacent to the edge area of the end surface of a rollers, a pressure disk is provided onto. An adjustment unit which is connected to at least one sensing device, which holds, through the adjustment unit, the pressure disk against the end surface of the roller under a pressure force. The sensing device is constructed as an instrument for determining the bending, adjusted on the basis of the pressure force, of a carrier for the pressure disk and the pressure force is adjustable in dependence on the continuously determined bending of the carrier.

Abstract: A yarn texturizing nozzle and method of thread-up of the nozzle are disclosed, and wherein the temperature of the nozzle remains substantially unchanged during yarn thread-up. The nozzle includes a body member having a yarn passageway extending therethrough, and the passageway is adapted to be laterally opened to permit the lateral insertion of the yarn during thread-up. Means are provided for supplying a heated treatment fluid such as air to the passageway, and control means are provided for maintaining the mass flow rate of the air substantially the same during yarn thread-up as when the passageway is closed during normal yarn processing.

Abstract: An air processing apparatus is disclosed having a feed roll pulling yarn from a source and feeding it to an air entangler at a feed rate. The yarn is entangled by a high pressure air stream in the air entangler, and a delivery roll pulls the yarn from the entangler at a delivery rate. The rolls are driven independently and independent controls are provided to independently vary the feed rate and the delivery rate to achieve a desired overfeed or underfeed of the yarn. A display shows the ratio of the feed rate to the delivery rate. A slub making apparatus feeds yarn to the entangler from a second source of yarn and includes a tensioner for tensioning the yarn as it is fed to the air entangler. An actuator selectively releases tension on the yarn from the second source so that it is rapidly overfed and the air entangler produces a slub in the entangled yarn.

Abstract: An air processing apparatus is disclosed having a feed roll pulling yarn from a source and feeding it to an air entangler at a feed rate. The yarn is entangled by a high pressure air stream in the air entangler, and a delivery roll pulls the yarn from the entangler at a delivery rate. The rolls are driven independently and independent controls are provided to independently vary the feed rate and the deliver rate to achieve a desired overfeed or underfeed of the yarn. A display shows the ratio of the feed rate to the delivery rate. A slub making apparatus feeds yarn to the entangler from a second source of yarn and includes a tensioner for tensioning the yarn as it is fed to the air entangler. An actuator selectively releases tension on the yarn from the second source so that it is rapidly overfed and the air entangler produces a slub in the entangled yarn.

Abstract: A method and apparatus for producing air entangled yarn from a plurality of yarn ends. A group of individual yarn ends is gathered into a sliver, passed through a yarn tensioner, then wrapped around a pair of rotating rolls. The sliver is carried from the rolls into an air entangling head, and the entangled yarn is removed from the air entangling head and wrapped around the pair of rotating rolls. From the rolls, the entangled yarn is carried through a yarn tensioner and wound up into a standard package. Since the entangling of the individual yarns causes shortening of the sliver, tension is created in the sliver before the air entangling head, and this tension tightens the wrapping around the rotating rolls. The same tension is reflected in the entangled yarn leaving the air entangling head, and this tension tightens the wrapping of the entangled yarn around the rotating rolls.

Abstract: A method and apparatus for threading acrylic filaments on rollers of an oxidizing furnace, wherein (a) the atmospheric temperature in the furnace is maintained at 180.degree. C. to the oxidizing temperature, (b) the tips of said filaments are fastened to a filament-fastening bar spanning a pair of chains which engage chain wheels provided at both ends of each roller freely rotatable against the roller, (c) the chains are moved, thereby said filament-fastening bar attached to the chains being moved from the entrance to the exit of the furnace and the filaments being threaded on the rollers, and (d) the moving speed of the chains is controlled with progress of heat-treating of the filaments so as to match the behavior of shrinkage and elongation of the filaments.

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: 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: The invention relates to a process for the treatment on a circular knitting machine of multifilament yarns with a stream of gaseous fluid under superatmospheric pressure, more particularly air, in which treatment the yarns to be knitted are rendered more or less bulky by subjecting them to a blowing treatment in a zone between the point from which the starting yarns are supplied and the point at which they reach the knitting needles.

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: An improved method and apparatus for bounce crimp texturizing thermoplastic yarn. The process and apparatus are characterized by a unique control system wherein either yarn thickness or a minute accumulation of the yarn discharged from the texturizer is sensed and the tension on the yarn controlled in response thereto so as to permit the yarn to issue from the texturizer in a loosely compacted tensionless state without significant intermediate yarn accumulation or piling prior to being continuously wound into packages.By eliminating substantial intermediate accumulation or piling of the yarn, the process and apparatus substantially reduce tangles, thereby reducing breakage and random crimpless lengths produced by the pulling on the yarn caused by these tangles.

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 cylindrical guide for varying the width of a bundle of continuous filaments has a surface in contact with the bundle that has an array of nonparallel grooves. The grooves converge until a minimum distance is reached on the guide surface and from thereon diverge to a maximum distance. With this arrangement of grooves it is possible to control the width of the bundle of filaments in a widening or narrowing manner by simply rotating the cylindrical guide one direction or the other until the desired width is reached.

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: A running tow of filamentary filter material is banded by a plurality of streams of compressed air which issue from the orifices of plenum chambers forming a row which extends transversely of the direction of transport of the tow. The streams which issue from the plenum chambers band discrete strip-shaped portions of the tow. The density of such strip-shaped portions is monitored at or downstream of the banding station, and the pressure of air in one or more chambers is increased or reduced when the monitored density of the respective strip-shaped portion or portions deviates from a desired density. The monitoring devices can utilize optoelectronic or electropneumatic transducers.

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: An improved method and apparatus for bounce crimp texturizing thermoplastic yarn. The process and apparatus are characterized by a uniqe control system wherein either yarn thickness or a minute accumulation of the yarn discharged from the texturizer is sensed and the tension on the yarn controlled in response thereto so as to permit the yarn to issue from the texturizer in a loosely compacted tensionless state without significant intermediate yarn accumulation or piling prior to being continuously wound into packages.By eliminating substantial intermediate accumulation or piling of the yarn, the process and apparatus substantially reduce tangles, thereby reducing breakage and random crimpless lengths produced by the pulling on the yarn caused by these tangles.

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: Textile strands are bulked or crimped by lengthwise compression, accompanied by flow of propellant fluid, into a foraminous region in which the strand is confined laterally but the fluid may escape except where the strand is compressed into a compact mass. Lateral escape of the propellant fluid is utilized to control an operating condition, such as temperature of strand input into and/or speed of removal of strand from the chamber, for improved uniformity of bulking or crimping.

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: Apparatus and method are disclosed to prevent melted yarn when stopped in a high temperature texturing jet device utilizing high temperature fluid such as steam. The device of this invention is attached to the prior art texturing jet device. The attachment comprises a sleeve around the yarn ejector. The sleeve has at least two orifices communicating with a conduit for high pressure fluid having a valve actuated by a sensor to detect yarn stoppage. The high pressure fluid, such as air, blows the yarn plug and yarn from the texturing jet device. The method comprises sensing yarn stoppage with a sensor and actuating the valve in the high pressure fluid conduit communicating with at least two orifices in the sleeve surrounding at least the down stream portion of the injector and blowing any yarn in the texturing chamber out of the chamber with high pressure fluid.

Abstract: Synthetic thermoplastic fibers are crimped 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 combination, a drawing apparatus and a crimping apparatus. The drawing apparatus comprises integral first and second draw rolls, with attendant separator rolls, and a draw pin. The final draw roll is fluted around its peripheral surface. The draw rolls are driven from the same source as the crimp feed rolls, and in order to control yarn tension at the crimp feed rolls a variable drive means is provided for the draw rolls, to alter their speed with regard to the speed of the feed rolls. A yarn heater is positioned between the final draw roll and the crimp feed rolls, or in the alternative, between the final draw roll and its separator roll.