Yarn winding method and resulting package

In a method of winding a textile yarn onto a rotating supporting core to produce a finished yarn package having a total yarn thickness (S), and which comprises the steps of winding the yarn about the rotating core at a substantially constant rate and such that the rotational speed of the resulting package gradually decreases, while guiding the yarn onto the core by a traversing yarn guide, decreasing the speed of the traversing yarn guide in proportion to the decreasing rotational speed of the package to define a substantially constant winding ratio during each of a series of sequential steps of the winding cycle, rapidly increasing the speed of the yarn traversing guide at the end of each sequential step to produce a stepped precision wind and so as to define upper and lower limits of the yarn traversing speed during each sequential step, the improvement therein comprising the steps of

• beginning the winding of the yarn onto the core with a traversing speed having a predetermined initial mean value, and
• increasing the mean value of the traversing speed from said initial mean value to a predetermined maximum mean value, and such that said maximum value is reached when a predetermined base layer is produced adjacent said core and which has a thickness (SB) of no more than about 10% of the total yarn thickness (S) of the finished yarn package.

A yarn package comprising

• a supporting tubular core,
• a yarn wound upon said core in crossed helices and so as to form a package composed of a plurality of overlying yarn windings, with said windings defining a base layer disposed immediately adjacent said core and an outer portion positioned radially outwardly of said base layer, and said outer portion having a substantially constant length of yarn deposit, thereby defining substantially flat end face portions at each end of said core and wherein said base layer has a thickness (SB) which comprises no more than about 10% of the total yarn thickness (S) of said package, with the yarn deposit angle on said core being between 2.degree. to 5.degree. and increasing proportional to the thickness of the base layer by 3.degree. to 7.degree. and with the length of yarn deposit on the core being greater at both ends by about 0.5 to 2 mm than the length of yarn deposit in the outer portion of the package.