Patent ID: 8067072

Claim:
A self-opening bag stack comprising: a plurality of stacked polyethylene film bags comprising about 40-48 wt. % high density, high molecular weight polyethylene, 12-20 wt. % high density, medium molecular weight polyethylene, 20-30 wt. % linear low density polyethylene having a melt index ranging from 0.10-0.30 gm/10 minutes., 0-8 wt. % color concentrate, releasably adhered together in substantial registration; each of said bags including front and rear polyethylene film walls, each of said front and rear walls having first and second side edges, a top edge and a bottom edge; said front and rear walls being integrally joined at their first and second side edges and secured together at their bottom edges and defining an open mouth portion adjacent said top edges; and at least an upper portion of an outer surface of said front and rear walls of each of said bags having been corona treated.