Patent ID: 7404787
Filing Date: 2008-07-29
Classification: B65B,Y10S

Abstract:
1. A method of manufacture comprising the following steps: intermittently advancing a packaging material along a process pathway during a first portion of each work cycle, wherein said process pathway passes through a joining station, each advance of said packaging material being equal in distance to N package lengths, where N is a positive integer greater than unity, said packaging material not advancing during a second portion of each work cycle; joining a respective portion of a zipper material to a respective portion of said packaging material at said joining station during said second portion of each work cycle; and inserting successive sliders at regular spaced intervals on portions of said zipper material not yet joined to said packaging material, slider insertion being performed at a slider insertion station located upstream of said joining station, said sliders being spaced such that said zipper material carries one slider per package length.