Nozzle (1) for manufacturing knotted yarn (11), having a yarn duct (2) in which knots are producible with the aid of air entanglement. The nozzle includes at least one air bore (3) having a longitudinal axis (A), which merges with the yarn duct (2) in a merging opening (4). Air is introducible into the yarn duct (2) through the air bore. The longitudinal axis (A) of the air bore (3) is disposed at an angle of less than 90, preferably 65-85, particularly preferably 78 in relation to a conveying direction (B) of the knotted yarn (11). A baffle face (5) is configured on the opposite side of the merging opening (4) of the air bore (3) in the yarn duct (2), so as to be substantially perpendicular in relation to the longitudinal axis (A) of the air bore (3).

A device for texturizing strand material into a wool-type product includes outer and inner nozzle sections. The outer and inner nozzle sections interface and define a passage through which the strand material travels. At least a portion of the passage has a non-uniform diameter that increases in a direction moving away from an input end of the device.

The method of manufacturing a textured artificial turf yarn includes providing a monofilament yarn, wherein the monofilament yarn includes a polymer blend of polymers; receiving differential scanning calorimetry, DSC, data of a sample of the polymer blend; determining one or more melting temperatures of the monofilament yarn using the DSC data; and texturing the monofilament yarn within a chosen temperature range using a texturing device to provide a textured artificial turf yarn, wherein the chosen temperature range is selected using the one or more melting temperatures.

The method of manufacturing a textured artificial turf yarn includes providing a monofilament yarn, wherein the monofilament yarn includes a polymer blend of polymers; receiving differential scanning calorimetry, DSC, data of a sample of the polymer blend; determining one or more melting temperatures of the monofilament yarn using the DSC data; and texturing the monofilament yarn within a chosen temperature range using a texturing device to provide a textured artificial turf yarn, wherein the chosen temperature range is selected using the one or more melting temperatures.

A process and system for manufacturing twisted and textured yarns are provided. The process includes drawing a first material yarn from a first supply source under predetermined tension; heatingly extending the first material yarn through at least one first heating godet; drawing a second material yarn from a second supply source under predetermined tensions; heatingly extending the second material yarn through at least one second heating godet; feeding at least one of the first material yarn and the second material yarn in an Air Textured Unit (ATY) to obtain a third material yarn; winding the third material yarn exiting from the ATY, wherein the winding is a pirn winding process; twisting the first material yarn, the second material yarn and the third material yarn; and rewinding the twisted third material yarn.

An air spinning method comprising the steps of: preparing at least one web of textile fibers (N1), to be fed by at least one introducer element (24) upstream of an air spinning device (28), drawing said at least one web (N1) with at least one drawing device (32), feeding said web (N1), previously drawn, in a spinning chamber (36) of the air spinning device (28), spinning the fibers (12) inside the spinning chamber (36) by means of compressed air jets, so as to: obtaining a yarn (4) comprising internal fibers (20) surrounded by external fibers (16), wherein the yarn (4) has an overall thread count lower than Ne20 and wherein the total number of internal (20) and external (16) fibers is less than 200.

Nozzle (1) for manufacturing knotted yarn (11), having a yarn duct (2) in which knots are producible with the aid of air entanglement. The nozzle includes at least one air bore (3) having a longitudinal axis (A), which merges with the yarn duct (2) in a merging opening (4). Air is introducible into the yarn duct (2) through the air bore. The longitudinal axis (A) of the air bore (3) is disposed at an angle of less than 90, preferably 65-85, particularly preferably 78 in relation to a conveying direction (B) of the knotted yarn (11). A baffle face (5) is configured on the opposite side of the merging opening (4) of the air bore (3) in the yarn duct (2), so as to be substantially perpendicular in relation to the longitudinal axis (A) of the air bore (3).

An air-jet type spinning device (4), comprising a body (8) at least partially hollow which defines a spinning chamber (12), a fibre feed device (16), facing said spinning chamber (12) so as to feed the fibres into the spinning chamber (12), a spinning spindle (20) at least partially inserted in the spinning chamber (12) and fitted with a spinning channel (24) for the suction of yarn obtained from said fibres, the spinning channel (24) defining a spinning direction (X-X), at least one channel (28) for sending a jet of compressed air inside the spinning chamber (12). Advantageously, the spinning chamber (12) is delimited at least partially by an outer side wall (32), opposite the spinning spindle (20), wherein at least one thread (36) is made on said outer side wall (32), wherein said at least one channel (28) is oriented so as to direct the jet of compressed air towards the at least one thread (36) in order to be guided and oriented by the latter.

An air-jet type spinning device (4), comprising a body (8) at least partially hollow which defines a spinning chamber (12), a fibre feed device (16), facing said spinning chamber (12) so as to feed the fibres into the spinning chamber (12), a spinning spindle (20) at least partially inserted in the spinning chamber (12) and fitted with a spinning channel (24) for the suction of yarn obtained from said fibres, the spinning channel (24) defining a spinning direction (X-X), at least one channel (28) for sending a jet of compressed air inside the spinning chamber (12). Advantageously, the spinning chamber (12) is delimited at least partially by an outer side wall (32), opposite the spinning spindle (20), wherein at least one thread (36) is made on said outer side wall (32), wherein said at least one channel (28) is oriented so as to direct the jet of compressed air towards the at least one thread (36) in order to be guided and oriented by the latter.

A yarn texturizing apparatus and method for texturizing a plurality of yarns, which can include a tack assembly and a jet box assembly. The tack assembly can be configured to receive a bundle of yarns and impart a plurality of twists to each bundle of yarns and subsequently impart a first tack point at a point corresponding to a twist reversal between the twists. The downstream jet box assembly can be configured to place a plurality of additional tack points intermittently along the plurality of twists of each bundle of yarn.