Yarn false twist texturing apparatus
AssigneeBarmag AG
InventorsFriedhelm Lenz, Hellmut Lorenz
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Abstract
A yarn false twist texturing apparatus having a plurality of side by side processing stations for texturing a plurality of thermoplastic yarns, wherein at each station a first feed system withdraws the yarn from a feed yarn package, and advances the yarn to a false twist zone composed of a heater and a cooling device, as well as a twisting unit. A second feed system withdraws the yarn from the false twist zone and advances it to a takeup device. The cooling device includes a cooling tube, with the yarn spiraling in contact with its outer surface. For an intensive cooling of the yarn according to the invention, the cooling tube is cooled from the inside with a coolant flow, which flows in a direction opposite to the direction of the advancing yarn.
Claims16
A yarn false twist texturing apparatus comprising
- a yarn heater, a yarn cooling device, and a yarn twisting unit serially arranged along a yarn path of travel,
- said yarn cooling device comprising a cooling tube which defines an upstream end adjacent the yarn heater and an opposite takeoff end, with the cooling tube being sized and positioned for having the advancing yarn spirally advance thereover from the upstream end to the takeoff end, and
- a source of cooling fluid arranged to flow in contact with and through the interior of the cooling tube in a direction from the takeoff end to the upstream end so as to cool the cooling tube and cool the yarn as it advances along the cooling tube.
A yarn false twist texturing apparatus comprising a plurality of side by side processing stations, with each processing station comprising
- a feed yarn package holder, a first yarn feed system, a yarn heater, a yarn cooling device, a yarn twisting unit, a second yarn feed device, and a yarn takeup device serially arranged along a yarn path of travel,
- with each of said yarn cooling devices comprising a cooling tube which defines an upstream end adjacent the yarn heater and an opposite takeoff end, with the cooling tube being sized and positioned for having the advancing yarn spirally advance thereover from the upstream end to the takeoff end, and
- a source of cooling fluid arranged to flow through the interior of each cooling tube in a direction from the takeoff end to the upstream end so as to cool the cooling tube and cool the yarn as it advances along the cooling tube.
Dependencies are inferred from the claim text.