Abstract: A method of treating filament yarn includes supplying a plurality of yarn filaments through a yarn channel of a nozzle in a yarn travel direction and introducing a blowing medium into the yarn channel substantially in a direction of the yarn travel direction and at an angle of introduction of more than about 15° and less than about 45° from a direction perpendicular to the yarn travel direction. The plurality of yarn filaments are mixed within the yarn channel so as to produce a filament yarn substantially free of knits.

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

Abstract: The invention relates to a pin assembly which keeps single-piece, two-piece or multi-pieced yarn processing elements, especially yarn interlacing spinnerets or thermal treatment elements, in an exact position during an entire service life, despite the extreme effects of preparations used. Instead of a traditional soldered joint or an adhesive connection, mechanical clamping means are used to fix the dowel pins to one part of the spinneret. Fixation of the dowel pins is not affected by heat or chemical preparations. The clamping means consists of a simple clamping ring holding the dowel pin in position directly inside the body of the spinneret between the clamping pin and an after-body. The novel positioning solution can be used with individual parts of spinnerets, parts of spinnerets in machines or multiple parts of spinnerets. The dowel pins enable the entire spinneret to be substantially miniaturized and allow narrow separation between various yarn runs, which was previously impossible.

Abstract: A method and machine for treating yarn may include feeding the yarn through both a heat treatment and an air jet texturing nozzle. The texturing nozzle may be supplied with compressed air, producing an air jet with a speed greater than Mach 1 in the yarn channel. The heat treatment may be performed before and/or after feeding the yarn through the texturing nozzle.

Abstract: Apparatus for intermingling multifilament yarns, having an intermingling assembly with a thread channel (3; 11), and at least one blowing channel (5′, 5″; 6′, 6″) opening into the thread channel (3; 11), and capable of receiving compressed air, wherein the cross-section of each blowing channel (5′, 5″; 6′, 6″) increases in the direction of the thread channel (3; 11) and the thread channel (3; 11) for each blowing channel (5′, 5″; 6′, 6″) has a first segment (3′) before the opening of the blowing channel (5′, 5″; 6′, 6″), a second segment (3″) in the area of the opening of the blowing channel (5′, 5″; 6′, 6″), and a third segment (3′″) after the opening of the blowing channel (5′, 5″; 6′, 6″), whereby the second segment (3″) of the thread channel has larger cross-sectional areas than those of the first and third segments.

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

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

Abstract: 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.