A method of producing a core spun yarn is disclosed. A oriented polyester yarn is drawn through a primary heater and exposed to a cooling plate. The oriented polyester yarn is drawn through a friction twisting unit. A spandex core is drawn from a spandex bobbin to become associated with the oriented polyester yarn. Both the spandex core and the oriented polyester yarn are drawn through an intermingling jet, which texturizes the oriented polyester yarn using a hot air punching technique. The oriented polyester yarn is twisted around the spandex core using the intermingling jet and/or the friction twisting unit. The oriented polyester yarn and the spandex core are drawn through a NFR roller and then heated to form the core spun yarn.

A method of producing a core spun yarn is disclosed. A oriented polyester yarn is drawn through a primary heater and exposed to a cooling plate. The oriented polyester yarn is drawn through a friction twisting unit. A spandex core is drawn from a spandex bobbin to become associated with the oriented polyester yarn. Both the spandex core and the oriented polyester yarn are drawn through an intermingling jet, which texturizes the oriented polyester yarn using a hot air punching technique. The oriented polyester yarn is twisted around the spandex core using the intermingling jet and/or the friction twisting unit. The oriented polyester yarn and the spandex core are drawn through a NFR roller and then heated to form the core spun yarn.

A device for pneumatically conveying and guiding a multifilament thread has a closed conveying channel which has a thread inlet opening at one end and a thread outlet opening at the opposite end. An injector zone having at least one compressed air channel which opens into the conveying channel is formed between the thread inlet opening and the thread outlet opening, wherein the compressed air channel can be connected to a compressed air source. In order to avoid blowing air from flowing back from the injector zone at the thread inlet opening, a return flow channel is formed in a channel section of the conveying channel between the thread inlet opening and the opening of the compressed air channel, which return flow channel connects the conveying channel to ambient atmosphere.

The invention provides for a method of delaying and reducing texture reversion of a textured artificial turf yarn (145), characterized by using a stretched and textured monofilament yarn as the textured artificial turf yarn, the stretched and textured monofilament yarn comprising a polymer mixture (400, 500), wherein the polymer mixture is at least a three-phase system, wherein the polymer mixture comprises a first polymer (402), a second polymer (404), and a compatibilizer (406), wherein the first polymer and the second polymer are immiscible, wherein the first polymer forms polymer beads (408) surrounded by the compatibilizer within the second polymer.

The invention provides for a method of delaying and reducing texture reversion of a textured artificial turf yarn (145), characterized by using a stretched and textured monofilament yarn as the textured artificial turf yarn, the stretched and textured monofilament yarn comprising a polymer mixture (400, 500), wherein the polymer mixture is at least a three-phase system, wherein the polymer mixture comprises a first polymer (402), a second polymer (404), and a compatibilizer (406), wherein the first polymer and the second polymer are immiscible, wherein the first polymer forms polymer beads (408) surrounded by the compatibilizer within the second polymer.

A method of manufacturing a wool-like yarn from continuous filaments of polymer material comprises steps of: providing partially oriented, continuous filaments of the polymer; drawing and air texturizing the partially oriented filaments to form threads, wherein a first group of straight filaments forms a core of the thread and a second group of filaments are overfed with respect to the first group of filaments to form a hairy sheath; and twisting or cabling a plurality of the threads together to form the wool-like yarn to have a weight of greater than 2000 dtex. The resulting wool-like continuous filament yarn is intrinsically UV resistant, antistatic and recyclable.

A method of manufacturing a wool-like yarn from continuous filaments of polymer material comprises steps of: providing partially oriented, continuous filaments of the polymer; drawing and air texturizing the partially oriented filaments to form threads, wherein a first group of straight filaments forms a core of the thread and a second group of filaments are overfed with respect to the first group of filaments to form a hairy sheath; and twisting or cabling a plurality of the threads together to form the wool-like yarn to have a weight of greater than 2000 dtex. The resulting wool-like continuous filament yarn is intrinsically UV resistant, antistatic and recyclable.

A texturing device for producing crimped plastic filaments has a texturing nozzle with a hot compressed air supply port and a filament guide slot tube. A cooling mechanism in the form of a counter air flow mechanism is integrated in the texturing nozzle. A crimped plastic filament is formed by blowing a plastic filament through a nozzle insert in a conveying direction by hot compressed air and crimping in a filament guide slot tube. Then the crimped plastic filament is cooled by a counter air flow, which is cooler than the hot compressed air flow and which is directed onto the crimped plastic filament. A counter air flow slot tube is arranged between a cooling air supply port of the counter air flow mechanism and the filament guide slot tube. A pass-through nozzle is arranged between the counter air flow slot tube and the cooling air supply port.

Techniques produce a crimped composite thread, in which multiple individual threads are extruded in each case in the form of a plurality of strand-shaped filaments, cooled, drawn by means of a drawing device and together crimped by means of a crimping device to form the composite thread. Before the multifilament individual threads are crimped, they are entangled separately in each case by means of an entangling unit of an entangling device. A position and/or orientation of at least one of the entangling units relative to the drawing device, the crimping device and/or a further one of the entangling units is changed during the production of the crimped composite thread.

Method for manufacturing yarn, wherein said yarn comprises a plurality of continuous filaments, wherein said method comprises at least the following steps: the step of spinning, preferably melt spinning, a plurality of continuous filaments; andthe step of treating said plurality of continuous filaments by means of a pressurized fluid supplied by two or more nozzles, and wherein one or more of said nozzles deliver said fluid at a varying pressure and/or rate and/or temperature.