Stepped precision winding process
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United States of America Patent
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-
Oct 6, 1987
Grant Date -
N/A
app pub date -
Mar 11, 1986
filing date -
Mar 11, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides an improved method for winding synthetic yarns and wherein the yarn is wound about a core at a substantially constant rate while the yarn is guided onto the core by a traversing yarn guide. The speed of the traversing yarn guide is proportional to the rotation of the package to define a substantially constant winding ratio during a series of sequential steps, and the speed of the traversing yarn guide is rapidly increased at the beginning of each of the sequential steps to produce a stepped precision wind. The upper and lower values of the traversing speed are both changed in a predetermined manner during the winding cycle, and so as to form a cylindrical package without harmful yarn patterns or bulges.
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