Patent ID: 6170985
Filing Date: 2001-01-09
Classification: B65D

Abstract:
A vented bag comprised of at least one rectangular sheet of substantially gas-impervious material having a top edge, a bottom edge opposite said top edge, and a first side edge folded over an opposite second side edge to form a tube having a longitudinal seam including at least first and second overlapping sheet portions joined together along a plurality of at least three continuous seal lines extending parallel to each other and longitudinally from said top edge of said sheet to said bottom edge of said sheet, said tube being sealed to closure at one end thereof to form a bag, each of said plurality of seal lines including a discontinuity proximate one of said top and bottom edges of said sheet, the discontinuities in adjacent ones of said seal lines being disposed proximate opposite ones of said top and bottom edges of said sheet such that said plurality of seal lines, said discontinuities, and said first and second overlapping sheet portions form a tortuous channel extending from a first of said discontinuities proximate one of said top and bottom edges, along a first space between said overlapping sheet portions defined by a first pair of said seal lines, through a second of said discontinuities proximate the other of said top and bottom edges, along a second space between said overlapping sheet portions, defined by a second pair of said seal lines, and through a third of said discontinuities proximate said one of said top and bottom edges said channel thereby providing communication between the interior of said bag and the exterior of said bag.