A stackable container for holding large quantities of fluent material comprises an outer load-bearing multi-layer corrugated paperboard wall and an inner liquid-impervious bag. A plate with an opening through it is supported on a peripheral ledge slightly below the top of the container wall. The ledge...http://www.google.com/patents/US4949872?utm_source=gb-gplus-sharePatent US4949872 - Stackable fluent material container
