US Patent 7798711 Flexible liner for FIBC or bag-in-box container systems

The present invention is a collapsible liner for use in a bulk container. The liner comprises a first flexible panel, a second flexible panel, a first seal, a second seal, and a tab. The first flexible panel includes a first longitudinal edge. The second flexible panel includes a second longitudinal edge. The first seal joins the first and second panels near the first and second longitudinal edges and runs generally parallel to the first and second edges. The second seal joins the first and second panels and is generally oblique to the first seal. At least one of the panels extends across at least one of the seals to form the tab, which includes an attachment feature. The attachment feature may be a piece of tape affixed to the tab. The attachment feature may be a strip of fabric or other reinforcement material melted into the tab, sealed within the tab or affixed to the tab via an adhesive. The attachment feature may be a hole with sealed or unsealed edges. The attachment feature may be a grommet or a loop for receiving a hook.