Patent ID: 6045084
Filing Date: 2000-04-04
Classification: B65H

Abstract:
A method of winding a continuously advancing yarn to form a yarn package, comprising the steps of;winding the advancing yarn onto a tube which is coaxially mounted on a driven winding spindle and so as to define an initial winding time T and a normal winding time,wherein during the normal winding time a contact roll is positioned to lie against the surface of the package being formed and the rotational speed of the winding spindle is controlled by the rotational speed of the contact roll so as to maintain a substantially constant yarn speed, andwherein during the initial winding time T the contact roll is spaced from the surface of the package being formed and the rotational speed of the contact roll is maintained substantially constant and the rotational speed of the winding spindle is controlled by a predetermined speed change function which determines the rotational speed change from the condition that the circumferential speed of the package is constant during the winding so as to maintain the substantially constant yarn speed.