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.

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 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.