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An automatically-operated bottom structure for an eight-sided container includes a pair of bottom flaps (66,69) pivotally connected to pair of opposed first panels (13,18), and band pivotally connected to an opposed pair of second panels (11,15) arranged substantially perpendicular to the first pane

An automatically-operated bottom structure for an eight-sided container includes a pair of bottom flaps (66,69) pivotally connected to pair of opposed first panels (13,18), and band pivotally connected to an opposed pair of second panels (11,15) arranged substantially perpendicular to the first panels. The band and bottom flaps are folded within the container when the container is in a folded-flat condition, but are adapted to automatically form an operative bottom structure when the folded-flat container is moved to a fully-expanded condition.

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An automatically-operating bottom structure for a collapsible container adapted to be selectively moved between a folded-flat condition and a fully-expanded condition, said container having 4n rectangular side panels where n is an integer of one or more, said panels being of substantially equal widt

An automatically-operating bottom structure for a collapsible container adapted to be selectively moved between a folded-flat condition and a fully-expanded condition, said container having 4n rectangular side panels where n is an integer of one or more, said panels being of substantially equal width and being pivotally connectd along their adjacent longitudinal edges so as to be arranged in series with one another, said panels being arranged in opposing pairs when said container is in said fully-expanded condition, the improvement which comprises: a bottom flap pivotally connected of each of a first pair of said panels, each bottom flap forming an included angle of about 0°with respect to its associated first panel when said container is in said folded-flap condition and forming an included angle of about 90°with respect to its associated panel when said container is in said fully-expanded condition; each of said first pair of panels and is associated bottom flap being folded about a longitudinal axis substantially midway between the longitudinal edges of said panel, the respective halves of said first pair of panels being arranged at an included angle of about 0°when said container is in said folded-flat condition and being arranged at an included angle of about 180°when said container is in said fully-expanded condition; a band pivotally connected to each of a second pair of said panels arranged substantially perpendicular to said first pair of panels, said band having two sections pivotally connected to one another about an intermediate pivotal axis substantially parallel to the pivotal axes between said band and said second pair of panels, said sections being arranged with respect to one another at an included angle of about 0°when said container is in said folded-flat condition and being arranged with respect to one another at an included angle of about 180°when said container is said fully-expanded condition; and interlock means for interlocking said bottom flaps when said container is in said fully-expanded condition; whereby when said container is moved from said folded-flat condition to said fully-expanded condition, said band will prevent said flaps from moving pivotally relative to their associated first panels through an angle of more than about 90°.