Patent ID: 6920737
Filing Date: 2005-07-26
Classification: B65B

Abstract:
1. A method of manufacture comprising the following steps: intermittently advancing a first elongated continuous structure made of flexible material along a process pathway during each work cycle, each advance of said first elongated continuous structure being equal in distance to one unit length, said first elongated continuous structure not advancing during a dwell time of each work cycle; during each dwell time, forming a respective structural feature of a first type on said first elongated continuous structure, said structural features of said first type being spaced at regular intervals, one structural feature of said first type per unit length; during each dwell time, tacking a respective zone on a second elongated continuous structure made of flexible material to a respective zone on said first elongated continuous structure, said tack zones being spaced at regular intervals along a line that does not intersect said structural features of said first type, one tack zone per unit length, and being generally aligned with respective zones separating said structural features of said first type; during each dwell time, joining said first and second elongated continuous structures along a respective line segment connecting successive tack zones; wherein an untacked and unjoined trailing section of said second elongated continuous structure is pulled forward when said first elongated continuous structure is advanced.