Abstract: A device treats a thread with compressed air. To this end, the device has an intermingling device which is encapsulated in a housing with respect to the environment. For thread guidance, the housing has a thread inlet and an opposite thread outlet. In order to prevent direct transmission of noise through the thread inlet and the thread outlet, the thread inlet and/or the thread outlet is formed in each case by two separate opening slots in quick succession and a thread guiding member between the opening slots.

Abstract: A method of manufacturing textured thread textured thread comprises the steps of: processing textured yarn having a zero or near-zero twist by applying a singles twist thereto; plying at least two textured yarns together by twisting them in a direction opposing the singles twist; wherein the singles twists lie in the range 4 to 20 turns per inch and the plying twist lies in the range 2 to 18 turns per inch.

Abstract: A device and a method for producing interweaving knots in a multifilament thread are described. The thread is guided in a circumferential guiding groove of a rotating annular nozzle in contact with the groove base of the guiding ring. An inlet thread guide and an outlet thread guide are arranged such that the contact wrap angle of the thread in the guiding groove of the annular nozzle is greater than the opening angle of the chamber opening on the stator. Thus, the thread is guided with contact before the pressure impulse is generated and the annular nozzle is preferably driven with a circumferential speed that is lower than the speed of the thread in order to influence the thread tension.

Abstract: The invention relates to a ceramic nozzle core and a method for producing a ceramic nozzle core which is part of a device used for producing loop yarn. The inventive ceramic nozzle core is embodied with an approximately constant wall thickness and a reduced size so as to perform the central functions of the yarn processing duct comprising air injection and a yarn outlet for forming loops while being produced in a molding process. In a particularly preferred method, the ceramic nozzle core is injection-molded with high precision. The inventive ceramic nozzle core can be configured in a miniaturized fashion and as part of a two-piece nozzle core, the ceramic nozzle core being inserted into an outer nozzle core jacket. The two-piece nozzle core can be incorporated into a housing known in prior art, for example, as a replaceable nozzle core.

Abstract: The invention relates to a method for the texturing of endless yarn by means of a texturing nozzle having a continuous yarn duct into which compressed air at a pressure higher than 4 bar is blown in the direction of the yarn conveyance, whereby the yarn duct is preferably conically widened at the outlet end with a widening angle larger than 10° for generating a supersonic flow. The invention furthermore relates to a texturing nozzle for the texturing of endless yarn with a continuous yarn duct having an inlet end, a central, preferably cylindrical portion with an air supply orifice as well as a preferably conical outlet end with a widening angle larger than 10°, but smaller than 40°.

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

Abstract: A yarn treatment jet is provided having a venturi member with a venturi shaped bore, and an inlet member with a yarn passage therethrough located in the mouth of the bore, in which the inlet member is in contact with the mouth of the bore to locate the inlet member positively relative to the venturi member and is configured to provide a passage for air into the venturi bore between the inlet member and the venturi member. The inlet member may be formed of a core and a needle so that to change the configuration of the air passage only the core need be changed. The air passage is formed by one or more grooves or bores in the inlet member or core.

Abstract: A yarn texturing machine for texturing and winding a yarn, wherein the feed system withdraws the yarn from a texturing device and advances it to a takeup device. Between the feed system and the takeup system, a yarn accumulation or free space is provided for the purpose of receiving the yarn that has slackened during a package doff due to an overfeed. To withdraw the yarn reliably from the feed system, a conveying nozzle is positioned between the feed system and the free space, and the conveying nozzle includes at least one nozzle bore that is directed in the direction of the advancing yarn, so that an air stream directed through the bore toward the yarn generates a tension on the yarn in the direction of its advance. Subsequently, the yarn is blown into the free space.

Abstract: A method and apparatus for continuously cleaning a yarn moving through the device. A first scouring body has a yarn entrance and a yarn exit connected by a central cavity. Pressurized fluid is introduced through the yarn while the yarn is positioned within and moving through the central cavity.

Abstract: A texturizing device for yarn texturing includes a yarn channel having movable components for rapidly releasing the entire yarn path. The nozzle body of the texturizing device preferably includes two parts as a glide plate and a sliding nozzle plate, in which the yarn channel is arranged in a U-shape in the slide plate and moved in relation to a flat glide plate via an articulated lever. Depending on the position of the articulated lever, the entire yarn path is fully open for threading or closed for texturing operation. A deflector may also be provided and can either be connected to moving parts or non-moving parts of the device. An air supply may be coupled with the sliding nozzle plate such that the air supply is blocked in the threading position of the articulating lever and open in the operating position of the articulating lever.

Abstract: A method of air jet texturing is described wherein the intensity of texturing is proposed to be increased in that an air flow exceeding Mach 2 is obtained by the design of the nozzle duct. The total opening angle of the nozzle duct (11) directly in front of the texturing zone is designed to be greater than the ideal Laval angle with an effective length which is preferably a multiple of the smallest diameter of the nozzle. This predominantly improves the quality of texturing, quite particularly at higher production rates. These can be increased into the range of 600 to 1000 m/min and higher. It has surprisingly been found that the novel nozzle core (10) can be designed so that it has all advantages of the novel invention and can be used as a substitute for prior art nozzle cores. The same applies to the complete texturing head as the novel invention can be used within the same geometric external dimensions, the same air pressure and the same quantity of air.

Abstract: An apparatus for stuffer box crimping synthetic filament yarns is disclosed, which includes an air nozzle for pulling in and advancing multi-filament yarns at a high speed, and a downstream stuffer box in which the gaseous transport fluid is separated and the yarn is compressed to a compact yarn plug. To increase the production speed and production reliability, the speed at which the yarn is advanced through the air nozzle, and the yarn tension which is produced by the air nozzle is increased. This occurs in accordance with the invention in that the duct for the common advance of the yarn and the transport fluid is configured such that the flow duct narrows in the shape of a nozzle in a first segment down to a restriction at which the outflowing transport fluid reaches the speed of sound, and the duct then widens in a second segment at a small angle of opening.

Abstract: In a system for air-jet texturing yarn a yarn treating jet is modified to locate a baffle at the outlet end of the jet. The baffle is positioned a fixed distance from the central axis of the jet and away from the outlet end of the jet such that the yarn follows the surface of the baffle to a point where the yarn leaves the baffle to pass back through the air stream exiting the jet to eliminate partially textured yarn that normally forms when stopping the system.

Abstract: A post-coalescence melt-spinning process for preparing fine undrawn hollow polyester filaments having excellent mechanical quality and uniformity at high speeds (2-5 km/min) involving selection of polymer viscosity and spinning conditions, whereby the void content of the resulting new undrawn filaments is essentially maintained or increased on cold-drawing or hot-drawing with or without post heat treatment, and the new fine hollow polyester filaments obtained thereby.

Abstract: A melt spinning process and the nylon hollow filaments and yarns made by such process which includes extruding molten nylon polymer having a relative viscosity (RV) of at least about 50 and a melting point (T.sub.M) of about 210.degree. C. to about 310.degree. C. from a spinneret capillary orifice with multiple orifice segments providing a total extrusion area (EA) and an extrusion void area (EVA) such that the fractional extrusion void content, defined by the ratio [EVA/EA] is about 0.6 to about 0.95, and the extent of melt attenuation, defined by the ratio [EVA/(dpf).sub.S ], is about 0.05 to about 1.5, in which (dpf).sub.S is the spun denier per filament, the (dpf).sub.S being selected such that the denier per filament at 25% elongation (dpf).sub.25 is about 0.

Abstract: Polyester mixed fine filament yarns having excellent mechanical quality and uniformity, and preferably with a balance of good dyeability and shrinkage, are prepared by a simplified direct spin-orientation process by selection of polymer and spinning conditions.

Abstract: Polyester filaments of high shrinkage and high shrinkage tension may be prepared by heat treatment of undrawn crystalline filaments of low shrinkage and shrinkage tension, and may be used for making polyester yarns of mixed shrinkage and bulky polyester yarns and fabrics therefrom.

Abstract: Hollow polyester undrawn filaments having excellent mechanical quality and uniformity are prepared by a simplified post-coalescence melt spinning process at speeds of e.g. 2-5 km/min by selection of polymer and spinning conditions whereby the void content of the undrawn filaments can be essentially maintained or even increased when drawn cold or hot, with or without post heat-treatment.

Abstract: The device has a guide body (1) with a through bore, which exhibits an outlet opening (3). A needle body contains a through yarn channel, which is coaxially aligned with the bore of guide body (1). One end of the needle body extends into a conical inlet section of the guide body bore and forms, with it, a passage gap for the blowing air. The blowing air is introduced by two feed bores (11, 12) into the annular space in front of the passage gap. An impact body (9) is placed in the area of outlet opening (3).

Abstract: A self-stringing jet device which is compact, easy to disassemble, and easy to string up includes a body, a yarn inlet section, and a movable venturi located at the outlet end of the jet. The venturi may be moved from a string up position to an operating position by engaging the movable venturi located within the jet with a tapered pin that matches a v-shaped groove in the venturi to act as a cam to move the venturi to the string-up position.

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 yarn treating jet is modified to locate a baffle at the outlet end of the jet. The baffle is positioned a fixed distance above the central axis of the jet and away from the outlet end of the jet such that the yarn and air follow the lower surface of the baffle to a point where the yarn leaves the baffle.

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 treating jet is modified to locate a baffle at the outlet end of the jet. The baffle is positioned a fixed distance above the central axis of the jet and away from the outlet end of the jet such that the yarn and air follow the lower surface of the baffle to a point where the yarn leaves the baffle.

Abstract: In a system for air-jet texturing yarn a yarn treating jet is modified to locate a baffle at the outlet end of the jet. The baffle is positioned a fixed distance above the central axis of the jet and away from the outlet end of the jet such that the yarn and air follow the lower surface of the baffle to a point where the yarn leaves the baffle to increase windup tension and provide a highly coherent textured yarn.

Abstract: A method and an apparatus for producing a slub yarn from a filament yarn, in which the starting yarn is propelled by an air stream at a first rate and made to impinge on a liquid (water) surface, whereby the yarn is opened to individual single filaments which entangle and fold with each other to form a thicker portion in the yarn body, while being held in a slack condition in the water and finally withdrawn therefrom at a second rate lower than the first rate. The water is preferably whirled to form a vortex. Interlacing of the yarn after withdrawal from the water is also preferable to strengthen the yarn structure.

Abstract: An apparatus for preparing a nonwoven web in which a bundle of continuous filaments is jetted from a nozzle together with a fluid stream, the filaments and the fluid stream impinge upon a first impinging surface, and after impinging, the filaments and at least a part of the fluid stream are guided to a collecting surface by a second impinging surface.

Abstract: A tow of continuous filaments is fed by aspiration into a stream of compressible fluid. The stream containing the filaments is directed into contact with a barrier disposed within a chamber at a force sufficient to initiate crimping of the filaments. A major portion of the compressible fluid is separated from the filaments and expelled from the chamber. The filaments are transported through the chamber by continuous movement of a surface therein at sufficient velocity to cause overfeeding of the filaments, whereby the filaments are forced against a mass of the tow and emerge from the chamber in crimped form.

Abstract: A method and apparatus for forming a yarn or sewing thread from core and effect yarns. The effect yarn is drawn at no higher than a normal drawing ratio for material from which the effect yarn is made and the effect yarn is softened by sufficient heating, in order to prevent rupturing of the effect yarn during drawing. The core or effect yarn is passed through a wetting device to aid aspiration and entanglement of the core and effect yarns in a fluid jet device. The effect yarn is overfed to the jet device to aid in the formation of a highly entangled looped yarn which is subsequently set by a heated roller while contraction of the yarn is prevented. The core yarn can also be drawn at or below its normal drawing ratio in order to aid in developing thread tenacity and ensure an acceptable elongation at break after dyeing or subsequent wet processing.

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: In a self-stringing yarn texturing air jet which is compact and easy to string up includes a body, a yarn inlet section, a movable venturi and a yarn guiding element through which yarn passes to the outlet end of the jet, a second flange on the yarn guiding element located upstream of a flange with an orifice improves texturing efficiency of the jet.

Abstract: A self-stringing jet device which is compact and easy to string up includes a body, a yarn inlet section, and a movable venturi and a cylindrical baffle located at the outlet end of the jet. The venturi may be moved from a string up position to an operating position by engaging the movable venturi located within the jet with a rotatable cam surface actuated by an external handle that can be rotated between stops, one of which is a rotatable eccentric for adjusting the operating position of the jet.

Abstract: A texturing device consists of nozzle (1) with a guide duct (2) and a radial bore for feeding a pressure medium terminating in the guide duct. The duct is outwardly flared with a convexly curved outlet opening (2'), and a spherical or semispherical guide element (5) extending into the outlet opening and forming therewith an annular gap (4). The outer diameter of the outlet opening (2') corresponds to at least four times the diameter of the duct (2) and to at least 0.5 times the diameter of the guide element (5).

Abstract: Synthetic yarn and yarn-like structures are formed by the method of treating separate strands of thermoplastic material so that at least one has a shrinkage ratio higher than normal at an elevated temperature. The strands are fed forwardly at different rates of overfeed and intermingled in a gas stream with formation of loops on the strands, then heated to cause them to shrink differentially while being held to a predetermined length until shrinkage ceases. Apparatus for performing the method includes yarn drawing means, intermingling means comprising a jet device incorporating intersecting passages for the strands and for a gas under pressure, feeding means and heating and cooling means for the intermingled yarn downstream from the jet device, also means for holding the intermingled yarn to a predetermined length while it is being heated and cooled. Yarn produced by the method incorporates filaments at least some of which present bud-like projections inhibiting relative movement of the filaments.

Abstract: A self-stringing jet device which is compact and easy to string up includes a body, a yarn inlet section, a movable venturi and a cylindrical baffle located at the outlet end of the jet. The venturi may be moved from a string up position to an operating position between positive set points engaging the movable venturi located within the jet.

Abstract: Non-woven fabric comprising polybutylene terephthalate continuous filaments having a three-dimensional crimp of unfixed shape provides remarkable resiliency, flexibility, and strength. A method of manufacturing such non-woven fabric forms a blended yarn of polybutylene terephthalate continuous filaments and highly shrinkable continuous filaments having a low melting point through direct coupling with high speed take-off means, and subjecting the resultant web to a relax heat set.

Abstract: A process for producing thermal-insulating nonwoven bulky product characterized by its structural make up of substantially continuous single filaments of from about 0.01 to 2 denier which are stabilized on themselves in the product by a surface binder on the filaments.

Abstract: A fibrous material composed of multifilaments is forced out of a spinneret with a fluid to collide with an impingement plate thereby separating the filaments, said impingement plate having as its impinging surface a material which creates a negative electrical charge on the surfaces of the filaments of the fibrous material upon impingement. This greatly improves separation of the filaments and permits production of non-woven sheets with high uniformity.

Abstract: The present invention relates to a nozzle for texturing a thread by a gaseous fluid flow. The nozzle is provided with an angular channel for guiding a thread, a channel for feeding gaseous fluid thereto, opening obliquely into the angular channel, and at the exit of the angular channel is located a texturing bridge. A second channel for guiding a second thread is provided, which opens obliquely into the angular channel for guiding the first thread.

Abstract: Apparatus to provide a novel false twisted slub yarn by combining a core yarn and an effect yarn in a fluid tangling zone. The linear velocity of the effect yarn is raised to allow slubs to be produced in the combined yarn in an air jet apparatus. A baffle cage is used to prevent yarn from the air jet from interferring with adjacent air jets when an end comes down.

Abstract: Thermoplastic yarn is texturized by the known method of forwarding it in a heated condition to a crimping zone at the entrance of a stuffer chamber (7) so as to form a plug (8) of crimped yarn within the chamber and withdrawing the yarn from the other end of the plug at a speed which is related to the input speed. The improvement comprises deriving signals from the speed of the yarn plug (8) in the stuffer chamber (7) by means of a sensing wheel (11) which drives a gapped monitoring disc (13). The disc (13) operates to intercept a beam of light from a source (14) which is directed on to a photo-sensor (15). The output of the photo-sensor is supplied to an electrical controller (36) which measures the time during which light is received for each gap in the disc (13) to provide a measure of the speed of the yarn plug.

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: Multi-filament thermoplastic bounce crimped yarns having improved fiber-fiber coherency and intermediate non-entangled yarns and methods and apparatus for making such yarns. The process is characterized by the use of a novel bounce crimper which produces a bounce crimped yarn substantially free of filament loops and filament entanglement which is then fluid vortex interlaced to produce a very fiber-fiber coherent yarn.

Abstract: The air jet of the present invention is of the "bullet nose" type and is provided with a conical outer surface (32) on the exit end for directing the ambient air surrounding the exit end of the jet downwardly and inwardly to join the yarn and pressurized air leaving the exit orifice (22) of the jet. An "airfoil" type baffle (40) is spaced from the exit orifice (22) and includes an arcuate leading surface (41) positioned to be engaged by the yarn and pressurized air after leaving the exit orifice (22) and a substantially wedge-shaped portion extending away from the arcuate leading surface (41) and being defined by the converging upper and lower planar surfaces (43, 44). The baffle (40) is supported for adjustment to vary the downstream distance and the perpendicular position relative to the exit orifice (22).

Abstract: A Venturi type nozzle for the texturization of yarns includes a hollow body o which compressed air is fed, a needle housed therein to which yarn is fed, and a plug, wherein the needle is provided with a longitudinal passage for the yarn, the air passes between the body and the needle, and yarn and air pass through a passage shaped like a Venturi cone in the plug, and wherein mutually facing portions of the needle head and of the plug have frusto-conical surfaces. The ratio of the axial distance between said frusto-conical surfaces to the diameter of the needle orifice is not more than 0.5, and preferably not more than 0.4. Preferably the conicity of the two frusto-conical surfaces is the same. Preferably also the outer surface of the needle head is cut off to provide a plane portion. The needle is axially displaceable and can be fixed in the desired axial position with respect to the body.

Abstract: A self-stringing jet device which is compact and easy to string up includes a body, a yarn inlet section, and a movable venturi and a rotatable cylindrical baffle located at the outlet end of the jet. The yarn inlet section comprises a cone-shaped yarn entrance having an axis that is at an angle with the axis of the yarn passage through the jet. The venturi may be moved from a stringup position to an operating position by one or more camming surfaces on the rotatable cylindrical baffle.

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: A propelling head for the pneumatic propelling of a multifilament tow, e.g., for use in the filling of textile or network bags, hoses, sacks, or bed cover channels for padding or insulating purposes, has a rear end through which the tow enters and a front end through which the tow is propelled by means of air injected into the head in such a manner as to produce a flow of air directed towards and out of the front end. Behind the zone of injection of air the head is closed with the exception of a tow engaging hole which fits closely around the tow entering the head to prevent or reduce the escape of air through the rear end of the head.

Abstract: There is disclosed a nozzle for texturing thread by a gaseous fluid stream. The nozzle is provided with a first duct for guiding the thread and a second duct for feeding the gaseous fluid and opening at an angle or skewed into the first duct. The section of the first duct is angular; to the exit end of the first duct there is attached a texturing bridge formed by a tube provided with a longitudinal recess which is directed opposite to the exit end of the first duct.