Abstract: A bag stuffer for an expandable bag has an insert movable from a collapsed to an expanded orientation and made of at least one substantially rigid and substantially planar side panel and a bottom panel. The side panel is connected to one end of the bottom panel at a hinge containing a fold between the side panel and the bottom panel and a Z shaped torsion spring biases the insert toward the expanded orientation. The spring has a torso disposed only at the hinge for directly acting on the fold to bias the side panel away from the bottom panel and toward the expanded orientation, and a pair of arms extending at angles from opposite ends of the torso, each arm lying flat against an inside surface of the respective bottom panel and side panel.

Abstract: A bag stuffer for an expandable bag includes an insert defining a pair of substantially planar elements movable from a collapsed orientation enabling compact storage of the expandable bag to an expanded orientation providing a commercial display thereof. The insert is biased to the expanded orientation but a releasable restraint, disposed about the insert and at least partially within the expandable bag, restrains movement of the insert from the collapsed orientation to the expanded orientation. The restraint is preferably a loop of a flexible strip formed by heat sealing one end of the strip to a strip portion adjacent the other end of the strip at at least one point to define a rupturable heat-seal bond.