Patent ID: 7351188
Filing Date: 2008-04-01
Classification: B31B,B65D,Y10S,Y10T

Abstract:
1. A method of manufacturing a reclosable bag, comprising the following steps: folding a first web of bag making film; slitting said first web of bag making film along the fold, thereby severing a first portion of said first web from a second portion of said first web and forming respective edges thereof; guiding said respective edges of said first and second web portions to position in alignment with and in opposition to each other; providing a hooded zipper having a hood that is a second web folded to form a U- or V-shaped profile having first and second sides; placing marginal portions of said first and second sides of the hood of said hooded zipper in position adjacent and overlapping respective marginal portions of said first and second web portion adjacent the edges formed by the slit; concurrently joining the overlapped marginal portion of the first side of the hood with the first web portion along a first band-shaped zone and the overlapped marginal portion of the second side of the hood with the second web portion along a second band-shaped zone; cross sealing said first web portion to said second web portion and said first side of said hood to said second side of said hood along first and second lines that are parallel to each other and transverse to said hooded zipper, said first and second lines being disposed at first and second locations respectively; and cutting said first and second web portions and said hooded zipper at said first and second lines, thereby forming an individual bag.