Patent ID: 7585444
Filing Date: 2009-09-08
Classification: B65H

Abstract:
1. A method of winding a length of plastic ribbon around a cylinder of a spool having a first flange at one end and a second flange at the other end, the first and second flanges being separated by a spool length, comprising the following steps: (a) winding the ribbon with a winding tension in a first range when the portion of the ribbon being wound is within a first predetermined distance of the first flange; (b) winding the ribbon with a winding tension in said first range when the portion of the ribbon being wound is within a second predetermined distance of the second flange; and (c) winding the ribbon with a winding tension in a second range when the portion of the ribbon being wound is not within a first predetermined distance of the first flange and not within a second predetermined distance of the second flange, wherein the sum of said first and second predetermined distances is less than said spool length, and the upper limit of said first range of winding tension is less than the lower limit of said second range of winding tension.