Importance

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Abstract

A strut improvement in an erectable carton of the shadow box type. The improved strut is provided from the carton material forming the carton blank which extends from a pair of corresponding non-common sides of two side-by-side panels which are retained in side-by-side relation as part of one pair of side-by-side panel structures when the blank is in a flattened preform condition. The strut includes a first end portion having an integral hinge connection with one of the two panels along the corresponding side thereof, a substantial central portion free of connnection with the corresponding sides of the two panels, and a second end portion having an integral hinge connection with the other of the two panels along the corresponding side thereof. The strut is folded along the hinge connections so as to bring the first end portion into surface-to-surface engagement with the one of the two panels and the second end portion into surface-to-surface engagement with the other of the two panels. The two end portions are secured in such surface-to-surface engagement. The arrangement is such that when the blank is erected from its flattened preform condition into a rectangular tubular condition the strut is moved into an angular relationship within the carton space.

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First Claim