A system for packaging cans or similar articles which is characterized by a wrap-around style blank of paperboard, or other suitable sheet material, which is cut and scored to divide it into wall forming panels adapted to be wrapped about a row of the articles, so as to form an open ended tubular carton, with the blank having hinged terminal end panels in the form of narrow strips which are interleaved and secured so as to cooperate with adjoining panel portions in forming one of the carton walls, the end panels being seated by a hinging movement which draws the panels into tight wrap formation and which engages primary locking tabs on the terminal edge of the one end panel in cooperating locking apertures disposed at the hinge line of the other end panel while hinged secondary locking tabs which are cut from the material adjacent the hinge line of the one end panel are engaged in cooperating locking apertures which are cut in the material of the wall panel to which the other end panel is hingedly connected.
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