Patent ID: 6379292
Filing Date: 2002-04-30
Classification: B65B,B65D,B65H

Abstract:
A method of manufacturing a roll of self opening plastic bags for use in dispensers which dispense empty bags one at a time, comprising the steps offorming a fully gusseted tubular plastic web, folding the web to form a multi-layer, star sealed web, forming a series of close spaced seal lines and separation lines in the star sealed web to separate it into a multiplicity of individual bags, with each seal line forming the bottom of a bag and its close spaced separation line forming an open top of an adjacent bag when the bags are separated at the separation line, wherein each separation line includes a central slot for engaging a separating tongue in a dispenser, at least partially separating the separation lines in one of the outer layers of the multi-layer star sealed configuration without opening any bags, and rolling the web into a roll whereby each seal line is in front of its corresponding close spaced separation line on the roll so that as the bags are dispensed from the roll, the separation of the leading bag from the roll by engagement of the separating tongue and central slot causes the next leading bag on the roll to open partially with its open end in front.