Cylindrical cheese and method for forming the wound package of a cylindrical cheese
AssigneeSaurer GmbH & Co. KG
InventorsHeinz-Dieter Göbbels, Gregor Gebald, Friedemann Söll
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Abstract
A method for forming the wound package of cylindrical cheeses on rotor spinning machines, wherein a crossing angle αM in a central zone of the bobbin traverse is less than 28° and a crossing angle αR in the end zones located adjacent the ends of the wound package is increased in respect to the central zone. The cylindrical cheeses thereby produced are distinguished by great running lengths, solid structure, good density distribution, and excellent unwinding properties.
Claims10
A method of winding a rotor spun yarn onto a bobbin core into the form of a cylindrical yarn cheese, the method comprising the steps of traversing a yarn guide along the bobbin core for winding the yarn onto the bobbin core at a yarn crossing angle α, the traversing of a yarn guide executing a lesser crossing angle αM in a central zone centrally along the bobbin core between about 15° and about 28° , and a greater crossing angle αR in end zones outwardly of the central zone adjacent opposite ends of the bobbin core.
A yarn cheese comprising a rotor spun yarn wound in progressive yarn layers into a cylindrical form on a bobbin core, each yarn layer having a lesser crossing angle αM in a central zone centrally along the bobbin core between about 15° and about 28° and a greater crossing angle αR in end zones outwardly of the central zone adjacent opposite ends of the bobbin core.
Dependencies are inferred from the claim text.