(57) A mechanism for interlocking a pair of panels (f, m) of a wrap-around type carton
(c), includes an elongate central forming block (w) having contoured opposed side
faces (16, 18) about which the panels to be interlocked are progressively caused to
fold during longitudinal movement relative thereto so that the panels are folded into
edge facing relationship with one another. A pair of elongate flanking blocks (V,
VI) are disposed adjacent the opposed side faces so as to provide a fissure (22, 26)
therebetween through which respective ones of the panels are caused to move. The surface
(20, 24) of the flanking blocks juxtaposed the side faces of the forming block are
contoured to maintain the panels in close relationship with respect to the central
forming block and to induce said progressive folding.
|
|
