Abstract: A method and apparatus for producing an air textured yarn is disclosed, and wherein a partially oriented and fully drawn yarn is withdrawn from a supply package, wrapped about a heated godet, and then directly advanced into an air texturing nozzle. In the nozzle, a jet of unheated air serves to impart loops, curls, bows and the like to the advancing yarn. The yarn is advanced from the heated godet to the air jet nozzle under a relatively low tension so as to permit the heated yarn to shrink and thereby reduce the residual shrinkage. The jet of unheated air in the air jet nozzle also cools the yarn and thus the formation of the loops, etc. occurs only after shrinkage has ceased.

Abstract: The device has a guide unit (1) enclosing a through hole with a conical inlet section (2). A needle unit (3) encloses a through yarn passage (4) arranged coaxially with the hole in the guide unit (1). One end of the needle unit (3) extends into the conical inlet section (2) and has a conical peripheral area (5) which, with the wall of the inlet section (2), forms a slot (6) for a blowing agent. The blowing agent is fed through a drilling (17) opening into the annular space (18) surrounding the needle unit (3) are pressed together by an elastic load, e.g. springs (11, 12). This arrangement accurately fixes the axial position of the guide unit (1) in relation to the needle unit (3), while the width of the slot (6) is accurately predetermined and unchangeable.

Abstract: A method and apparatus for producing an air textured yarn is disclosed, and wherein a partially oriented yarn is withdrawn from a supply package, drawn, and then directly advanced into an air texturing nozzle, wherein a jet of unheated air serves to impart loops, curls, bows and the like to the advancing yarn. The drawing godet of the drawing system is heated so as to heat the advancing yarn, and the yarn is then advanced from the heated godet to the air jet nozzle under a relatively low tension so as to permit the heated yarn to shrink and thereby reduce the residual shrinkage. The jet is unheated air in the air jet nozzle also cools the yarn ahnd thus the formation of the loops, etc. occurs only after shrinkage has ceased.

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: A substantially twist-free, crimped, continuous, multifilament yarn containing randomly-spaced, tightly entangled nubs and the process and apparatus used for making such yarns is disclosed. The nub yarn is made by feeding a substantially entanglement-free multifilament crimped continuous yarn through a forwarding jet, through an aspirating entanglement jet where nubs are formed and passing the yarn through a loop guide. The nubs of the yarn are less than one inch in length and the yarn is useful in textile and carpet end uses.

Abstract: A winding apparatus which includes a plurality of yarn supply package stations for holding a plurality of packages of multifilament yarn, a processing station for receiving yarns from the yarn supply packages and processing the yarn, and a take-up package. The improvement comprises a yarn randomizing device positioned downstream from the supply packages and upstream from the processing station for intermixing filaments within a single yarn and among the plurality of yarns in a random and irregular manner before delivery of the yarns to the processing station thereby preventing patterning in the processed yarn. In one embodiment the randomizing device comprises a air vortex and in another, a rotating beater.

Abstract: A technique for combining at least two unlike yarn ends to produce a composite yarn. One of the two unlike yarn ends is a spun yarn and the other of the two unlike yarn ends is a continuous multifilament yarn. The technique includes removing each of the two yarn ends from respective supply packages under predetermined tensions. The yarn ends are separated to maintain a predetermined included angle between the yarn ends. The separated yarn ends are then fed through an entangling jet to combine the yarn ends and collected on a take-up package. In the preferred embodiment, the included angle between the yarn ends varies between 3 and 17 degrees. The resulting air entangled yarn has an average number of 80 tacks per yard and an average loop size of 174 inch or less.

Abstract: Device for drying a bundle of threads between a stretching trough and a sizing trough has a tiered array of elongate nozzle bodies each having a plurality of thread channels therein for receiving a partial bundle of threads therethrough. Each channel has a cross section consisting of a semicircular bottom part of radius r and a rectangular top part of width 2r and height r, the semicircular bottom part having a centered air inlet for generating turbulence to dry the threads. The channels are closed by a metal cover which is received flushly against a cover contact surface having an air checking borehole which assures that the cover is in place. A preferred embodiment has channels with restricted inlet and outlet parts to facilitate generating knots of turbulent air in a central turbulent part of the channel.

Abstract: A method for combining a relatively elastic yarn component with a relatively inelastic yarn component is disclosed, and wherein the two components are guided through a jet of high velocity air so as to entangle the filaments and produce a bulked composite yarn. To facilitate the air jet entangling operation, at least the inelastic yarn component is subjected to a filament spreading operation prior to its advance through the air jet. The method may also be incorporated in a false twisting process, and wherein the inelastic component is false twisted so as to transversely spread its filaments prior to its being brought into contact with the elastic component and subjected to the air jet.

Abstract: A method and apparatus for processing a synthetic continuous filament textured yarn is disclosed, and wherein the yarn is wetted prior to entering the texturizing nozzle. To effect a uniform and controllable wetting, the yarn is passed over a guide surface so that the filaments are laterally spread apart, and a jet of water is directed onto the advancing yarn from a direction opposing the guide surface.

Abstract: A yarn string-up gun is modified to include an entangling jet and a cut-down device eliminating the need to provide entangling jets for joining yarns on each yarn-spinning machine position for intermittent use.

Abstract: The texturing nozzle is supplied with a heating medium such as hot air during a start-up phase for preheating of the nozzle and the associated parts of the texturing machine. After a predetermined temperature has been reached, superheated steam is delivered via change-over valve and a heater to the nozzle to carry out a texturing operation therein. The changeover valve may be operated to switch over to hot air during a running-down phase of the machine.

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: A yarn texturing machine having an air jet for combining and texturing at least two yarns to form a single textured yarn, which includes respective yarn feed and drawing devices for each yarn. To provide good control of the yarns in the low tension region upstream of the jet the drawing devices are positioned relative to the jet and each other so that the yarns travelling to the jet travel along straight, spaced yarn paths which converge at the jet at an angle of between 70.degree. and 50.degree., and lie in a plane inclined at between 60.degree. and 90.degree. to the axis of the jet. After the jet the textured yarn is passed upwardly then downwardly over a setting heater located above the jet and then to a wind-up mechanism disposed beneath the jet.

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: Interlacing means are provided for the interlacing of multifilament yarns exhibiting a yarn channel. At given distances from the entrance and exit openings forming the yarn channel, yarn guides are so arranged that, with the supply of compressed air shut off, the yarn is laid onto the yarn channel so that it extends parallel to its longitudinal direction, and that the straight yarn sections, which are located between the entrance and exit openings of the yarn channel and the yarn guides, are inclined at acute angles to portions of the geometric longitudinal axis of the yarn channel. Furthermore, the blow angle of the blow nozzle is smaller than 90.degree.. The length of the yarn channel equals for smooth yarns maximally 40 mm and for texturized yarns maximally 30 mm. There results exceptionally high yarn advance speeds and a particularly good vortexing of the yarn.

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: An apparatus for processing yarn, comprising yarn supply packages for supplying a yarn. First and second feed rolls and a take-up roll are provided for delivering the plied yarn from the supply package onto a take-up package. An air-jet is positioned between the first and second feed rolls for inserting short, spaced-apart entangled segments into the plied yarn as the plied yarn moves past the air-jet at a predetermined speed. The air-jet comprises an enclosure having a yarn entrance and a yarn exit and a nozzle for directing a stream of pressurized air into the enclosure and against the plied yarn while the plied yarn is moving through the enclosure. The nozzle moves past the enclosure at substantially the same surface speed as the yarn is moving through the enclosure whereby the stream of pressurized air impacts a short, discrete segment of yarn while the segment of yarn is within the enclosure.

Abstract: In the case of an air nozzle for pneumatic false-twist spinning having several parts arranged behind one another in moving direction of the yarn, it is provided that the part which is arranged behind the part containing the compressed-air ducts, in moving direction of the yarn, is made of a harder, more wear-resistant material and has a smaller diameter than the preceding part.

Abstract: A winding apparatus which includes a plurality of yarn supply package station for holding a plurality of packages of multifilament yarn, a process station for receiving yarns from the yarn supply packages and processing the yarn, and a take-up package. The improvement comprises a yarn randomizing device positioned downstream from the supply packages and upstream from the processing station for intermixing filaments within a single yarn and among the plurality of yarns in a random and irregular manner before delivery of the yarns to the processing station thereby preventing patterning in the processed yarn. In one embodiment the randomizing device comprises a air vortex and in another, a rotating beater.

Abstract: To improve the efficiency of a rotating air layer produced by an air injection nozzle and rotating in a substantially cylindrical space, the rotating air layer being intended to rotate a twisted fiber structure introduced through an inlet duct, there is provided a tube extension at the inlet duct. This tube extension forms a guide for the air flow injected tangentially and at an inclination by the air injection nozzle with respect to the direction of travel of the twisted fiber structure. As a result of this guide, the rotating air layer can form before it engages or contacts the twisted fiber structure. As a result there is increased the rotation of the engaged twisted fiber structure per unit length thereof, resulting in increased strength of the twisted fiber structure and the yarn ultimately produced therefrom with low air consumption.

Abstract: A bulking process for glass fiber strands is provided which allows for increased bulking speed while reducing any decrease in the tensile strength of the bulked glass fiber strand yarn. The process involves conveying treated glass fibers having one or more water soluble, emulsifiable or dispersible thermoplastic materials having a melting or softening point of greater than around 100.degree. F. (37.degree. C.), one or more cationic lubricants and water to a heater to melt or soften the thermoplastic material present on the fibers, bulking the heated glass fiber strand, removing the bulked glass fiber strand at a rate less than the rate of conveyance to bulking, and collecting the bulked glass fiber strand yarn. The treated strand being conveyed to the heater can already be dried or can be wet. After removal from bulking, the glass fiber strand can be treated with a chemical treatment to assist in retarding any additional decrease in tensile strength of the bulked glass fiber strand.

Abstract: Apparatus for gas jet treatment of moving, continuous multifilament synthetic yarn and a method for cleaning gas jet treatment apparatus are disclosed. A pressurized gas source for the apparatus is selectively disconnected and reconnected to a conduit which supplies a gas jet orifice in a yarn treatment zone. A pressurized liquid is supplied to the conduit when the gas source is disconnected. The liquid is directed forcefully from the orifice into the yarn treatment zone to remove deposits which form during treatment of the yarns.

Abstract: Disclosed is a method for making a reinforcing element for use in asbestos-free friction materials. According to the method, heterogenous strands are joined together, without twisting them, and subjected to a fluid jet and to a rubber compounding material. At least one of the strands is fed to the multiplying stage at an overfeed rate.

Abstract: A winding apparatus which includes a plurality of yarn supply package stations for holding a plurality of packages of multifilament yarn, a processing station for receiving yarns from the yarn supply packages and processing the yarn, and a take-up package. The improvement comprises a yarn randomizing device positioned downstream from the supply packages and upstream from the processing station for intermixing filaments within a single yarn and among the plurality of yarns in a random and irregular manner before delivery of the yarns to the processing station thereby preventing patterning in the processed yarn, such as a rotating roller having threads thereon for reciprocating the yarns from one side of the roller to the other.

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 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: A substantially twist-free, crimped, continuous, multifilament yarn containing randomly-spaced, tightly entangled nubs and the process and apparatus used for making such yarns is disclosed. The nub yarn is made by feeding a substantially entanglement-free multifilament crimped continuous yarn through a forwarding jet, through an aspirating entanglement jet where nubs are formed and passing the yarn through a loop guide. The nubs of the yarn are less than one inch in length and the yarn is useful in textile and carpet end uses.

Abstract: An apparatus for the production of a yarn has a joining group provided with a frame carrying a pneumatic-joining assembly, a unit for conditioning substantially inelastic yarns and feeding them to the pneumatic-joining assembly and a unit for feeding an elastic strand to the latter. A common drive is provided with individually adjustable transmission ratios using conical pulleys and belts.

Abstract: A suction gun has a first injection nozzle and a second injection nozzle. The first and second injection nozzles inject pressurized water, thereby to draw a yarn with a suction force of the pressurized water. The second injection nozzle has a plurality of jets, respective axes of which intersect with each other at an intersection point. The intersection point is located in a position displaced by E, which is preferably in a range from 0.2 mm to 0.9 mm, from an axis of a through hole which is included in a pressurized liquid exhaust passage.

Abstract: A substantially twist-free, crimped, continuous, multifilament yarn containing randomly-spaced, tightly entangled nubs and the process and apparatus used for making such yarns is disclosed. The nub yarn is made by feeding a substantially entanglement-free, multifilament, crimped, continuous yarn through a forwarding jet, through an aspirating entanglement jet where nubs are formed and passing the yarn through a loop guide. The nubs of the yarn are less than one inch in length and the yarn is useful in textile and carpet end uses.

Abstract: In the case of an air nozzle for pneumatic false-twist spinning having a yarn channel formed of at least two segments and having at least one compressed-air duct leading into the yarn channel, it is provided that for the formation of each compressed-air duct, a groove is worked into one of the segments that is open in the direction of the contact of the other segment and that is covered by the segment that follows. To accommodate selective changes in the compressed air duct configuration the segments are replaceable parts that are clamped by screw threaded nozzle housing parts.

Abstract: A glass fiber bulk strand roving that is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another for form a composite entangled structure. The roving of the present invention is made by a process that uses a finger wheel to form axially extending loops in strands and a co-axial spinner with an inlet that is positioned above or below the finger wheel.

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: A method and apparatus for the manufacture of a glass fiber bulk strand roving which is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another to form a composite entangled structure. The roving which is produced by the method and apparatus of the present invention is made by a process that uses an array of inwardly projecting fingers to form axially extending loops in the strands and a spinner with an inlet that is positioned adjacent the fingers.

Abstract: A glass fiber bulk strand roving that is made up of a multiplicity of strands, each of which is made up of a plurality of individual fibers, for example, 200 of such fibers. Each strand of the roving has a multiplicity of rather long, axially extending loops, for example, axially extending loops with a calculated length of at least 6 inches, and a multiplicity of shorter, unbroken, cross-axially extending loops that are formed in the axially extending loops of such strands. The axially extending loops and the cross-axially extending loops interengage and intertwine with one another to form a composite entangled structure. The roving of the present invention is made by a process that uses a finger wheel to form axially extending loops in strands and a spinner downstream of the finger wheel.

Abstract: A method for forming a slub yarn uses conventional false-twist texturing apparatus in combination with one or more air jets to impart striations and/or neps and slubs to continuous filament yarns. Three process configurations are disclosed; each configuration uses one air jet through which yarn passes and which directs turbulent air in a direction opposite to the direction of travel of the yarn.

Abstract: A substantially twist-free, crimped, continuous, multifilament yarn containing randomly-spaced, tightly entangled nubs and the process and apparatus used for making such yarns is disclosed. The nub yarn is made by feeding a substantially entanglement-free multifilament crimped continuous yarn through a forwarding jet, through an aspirating entanglement jet where nubs are formed and passing the yarn through a loop guide. The nubs of the yarn are less than one inch in length and the yarn is useful in textile and carpet end uses.

Abstract: Positive twist control and a gentle action on the yarn are provided by a vacuum texturizing process for yarn. Single filament and multi-filament yarns can be processed, including fine denier filaments and/or weak thermoplastic filaments. Yarn is fed by feed rolls to a heater block and then to the generally axially through-extending passageway and a spindle perforated cylinder. The spindle is mounted for rotation about an axis, and is rotated at a speed of several hundred thousand rpm, while a vacuum in the range of about 8-12 inches of mercury is applied to the exterior of the cylinder. The force of the vacuum holds the yarn against the interior wall of the passageway so that each rotation of the cylinder causes a twist of the yarn, which is backed up to the heater and set in a semi-permanent, false twist configuration. The yarn is withdrawn from the cylinder by output means, at which time the twist relieves itself and a textured, bulk, stretch-type yarn is produced.

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: The apparatus for interlacing a multi-filament yarn within an interlacing passage comprises a body member containing at least one substantially spherical recess for receiving a substantially spherical air jet or blow nozzle element selectively movable in predetermined directions to provide two-dimensional adjustability thereof. Due to this selective movability of the substantially spherical air jet or blow nozzle element, there exists the possibility of controllably moving the air stream issuing from the air jet or blow nozzle element so as to interlace the filaments of the multi-filament yarn. The air stream can be moved within a predetermined operating range in order to thereby optimize the interlacing of the multi-filament yarn.

Abstract: A doffing gun for aspirating yarn includes a vacuum chamber tube threadably connected to an ejector handle body formed with a first bore axially aligned with the vacuum chamber and a second bore substantially perpendicular to the first bore. The first bore includes a mixing chamber into which air under pressure is admitted through the second bore and a third bore which extends between the first and second bores. The third bore is oriented so that it enters the mixing chamber at an angle of about 15.degree. to 30.degree. from the longitudinal axis of the vacuum chamber tube and axially aligned first bore. Attached to the outlet or exhaust end of the ejector handle is a noise reduction means which, in turn, is connected to a diffusing nozzle and collection bag. The collection bag comprises upper and lower sections of tightly woven and open mesh materials, respectively.

Abstract: An apparatus is disclosed for simultaneously air jet entangling a plurality of advancing multifilament yarns. The apparatus includes a plurality of elongate air jet beams, with each beam having a longitudinal air passageway extending along its length, and at least one row of closely spaced air jet nozzle heads supported along each of the beams. Each of the nozzle heads includes a plurality of individual yarn entanglement nozzles and a central air chamber connecting the central air chamber to the air passageway. Also, an air jet aperture communicates between the air passageway and the yarn duct of each entanglement nozzle for directing an impinging airstream against an advancing yarn passing through the duct. The beams are mounted for adjustment on a supporting frame so that the nozzle heads may be positioned in proper alignment with a sheet of yarns passing therethrough. The beams may be rectangular or round in cross section and the nozzle heads are releasably connected along the length of the beams.

Abstract: The apparatus for interlacing a multi-filament yarn within an interlacing passage comprises a slide member movable at essentially right angles to the interlacing passage. The slide member has a jet or blow nozzle opening into the interlacing passage. The slide member is selectively movable in predetermined directions. Due to this movability of the slide member there exists the possibility of moving the airstream issuing from the jet or blow nozzle so as to interlace the filaments of the multi-filament yarn. The airstream can be moved within a predetermined operating range in order to thereby optimize the interlacing of the multi-filament yarn. The movement of the slide member is effected by means of a pressure pin or bolt which displaces the slide member against the force of a compression spring.

Abstract: In a jet spinning device, in order to enable automatic transport of the yarn from a twist jet to an output roller pair which, for spin-technological reasons, is somewhat spaced from the twist jet, the twist jet is placed in flow communication with a pneumatic guide tube projecting up to the output roller pair. In order to enable automatic threading of the yarn or the like into the output roller pair, the opening or mouth of the guide tube is arranged so close to the output roller pair that the yarn is conveyed into the converging space of the output roller pair and is engaged or entrained thereby.

Abstract: An apparatus is disclosed for simultaneously air jet entangling a plurality of advancing multifilament yarns. The apparatus comprises a plurality of elongate air jet beams, with each beam having a longitudinal air passageway extending along its length, and a plurality of parallel yarn ducts extending transversely through the beam. Also, an air jet aperture communicates between the air passageway and each yarn duct for directing an impinging airstream against an advancing yarn passing through the duct. The beams are mounted to a supporting frame, with the beams being horizontally disposed and vertically spaced apart, and the beams are each mounted for rotation about a horizontal axis which extends longitudinally along its length, and the supporting frame is itself mounted for rotational movement about a horizontal axis which is parallel to the rotational axes of the beams.

Abstract: In a pneumatic nozzle utilized in the process of producing a fasciated yarn, provided with a transporting passage of a fiber bundle in which an inlet portion, a smaller channel, and a large channel having an outlet opening are successively arranged along the longitudinal axis of the transporting passage, and a plurality of air supply apertures for ejecting compressed air toward a restricted region of the transporting passage, a plurality of small chambers formed around the large channel is symmetry with respect to the large channel's longitudinal axis and connecting apertures for connecting the large channel to the outside of the nozzle so that air introduced into the large channel through the inlet opening and the air-supply apertures can be partly discharged, while the remaining part of the above-mentioned air is discharged from the outlet of the large chamber.

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: 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: 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.