초록 ▼

Open-faced cartons of the corrugated paper type and corner holders therefor having stacking lugs for cooperating with the apertured bottom of another like carton to preclude lateral movement between a pair of cartons when one is stacked on the other are disclosed. In one preferred form, each corner

Open-faced cartons of the corrugated paper type and corner holders therefor having stacking lugs for cooperating with the apertured bottom of another like carton to preclude lateral movement between a pair of cartons when one is stacked on the other are disclosed. In one preferred form, each corner holder comprises inner and outer sidewall engaging flanges interconnected by a “U”shaped portion to be disposed in a carton sidewall slot with a lug in the form of a relatively flat blade and a pair of reinforcing gussets extending upwardly into the bottom of a superadjacent tray. Two such carton sidewall slot engaging clasps interconnected by a generally flat rib may be employed at each corner around an open carton face to hold the carton material in its folded position, provide a support surface for a superadjacent tray and to prevent lateral movement of that superadjacent tray on the support surface. Column joining tie sheets especially suited to use with such cartons and corner holders are also disclosed.

대표청구항 ▼

In an open-faced tray of generally rectangular configuration formed by selectively folding a flat corrugated paper blank and having, when selectively folded, a bottom portion and vertical walls with corner holders near the open face, the improvement wherein the corner holders each comprise inner and

In an open-faced tray of generally rectangular configuration formed by selectively folding a flat corrugated paper blank and having, when selectively folded, a bottom portion and vertical walls with corner holders near the open face, the improvement wherein the corner holders each comprise inner and outer flanges lying closely adjacent corresponding inner and outer tray sidewall portions and connected by an intermediate portion disposed in a tray sidewall slot and having a “U”shape in the plane of the sidewall, each corner holder including a plurality of relatively rigid upstanding lugs each having a relatively flat upstanding blade extending upwardly, as an extension of the inner flange, beyond the tray open face, each corner holder including reinforcing gussets extending generally normal to said blade flat surface, the gussets being formed as upward extensions of the opposte “U”portion sides, and a cooperating plurality of openings in a tray surface bottom wall opposite the open face whereby a number of such trays may be stacked one upon the other with adjacent trays in the stack having the lugs of one received in the openings of the other with a flat surface of each said flat upstanding blades being adapted to abut an inside surface of a vertical wall of the superjacent tray to substantially limit lateral movement between the trays.