Crosswound Bobbin and Associated Production Method
AssigneeDeutsche Institute fuer Textil- und Faserforschung Stuttgart Stiftung des Oeffentlichen Rechts
InventorsGerd Stahlecker, Gernot Schaffler, Christoph Riethmuller
Life of this patent
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Abstract
An overend take-off crosswound bobbin and a method for its production are designed in such a way that the density of the finished crosswound bobbin is increased and the run-off characteristics during further processing are optimized. For this purpose, in one variant parallel windings are introduced at intervals. In another variant, when the bobbin diameter is small the yarn is wound on at a smaller pitch angle than for a larger diameter. Furthermore, a traversing stroke which is reduced by comparison with the bobbin width is displaced along the bobbin width.
Claims14
A method for producing an overend take-off crosswound bobbin (1), in which at least one thread (4) is wound on with a pitch angle (α) which can be varied during the winding operation, characterized in that one or more thread layers having parallel windings (17) are produced at certain time intervals.
A method for producing an overend take-off crosswound bobbin (1), in which at least one thread (4) is wound on with a pitch angle (α) which can be varied during the winding operation, characterized in that the pitch angle (α) increases on average, as seen over a number of thread layers (6), with increasing bobbin diameter (D).
An overend take-off crosswound bobbin (1) having at least one thread (4) wound on with a variable pitch angle (a), characterized in that the crosswound bobbin (1) has one or more thread layers having parallel windings (17)
An overend take-off crosswound bobbin (1) having at least one thread (4) wound on with a variable pitch angle (α), characterized in that the pitch angle (α) of thread layers (6) situated to the inside is on average, as seen over a number of thread layers (6), smaller than that of thread layers (6) situated further to the outside.
Dependencies are inferred from the claim text.