Carton tray and method of forming same
AssigneeMalnove Holding Co., Inc.
InventorBruce H. Dalrymple
Life of this patent
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Abstract
A carton tray has an improved corner construction including long and short overlapped connector tabs wherein the long connector tab is secured by adhesive both to the adjacent short connector tab and to the end panel to which the short connector tab is foldably connected. The result is a strong corner post of at least three-ply thickness and one which can be easily assembled on a standard hot melt forming machine with application of adhesive to only one side of the blank from which the carton tray is constructed. The invention is further directed to the method of forming the improved carton tray with the corner post construction described above.
Claims21
A carton, comprising
- a carton blank having opposite interior and exterior surfaces and comprising,
- a generally rectangular bottom wall having opposite side edges and opposite ends and our corners,
- a pair of opposite end panels foldably connected to respective opposite ends of said bottom wall,
- right and left side panels foldably connected to respective opposite side edges of said bottom wall,
- each end panel having a top edge, a bottom edge and opposite end panel ends, and a pair of short connector tabs foldably connected to respective end panel ends,
- each side panel having a top edge, a bottom edge and opposite side panel ends and a pair of long connector tabs foldably connected to respective side panel ends,
- each long connector tab protruding from said respective side panel end by a distance greater than the extent that each short connector tab protrudes from said respective end panel end,
- a cut separating each long connector tab from the adjacent short connector tab,
- said end panels and side panels being inclined generally perpendicular to said bottom wall toward said interior surface,
- each short connector tab overlying the end panel to which it is foldably connected,
- each long connector tab being inclined generally 90.degree. toward said interior side into flush engagement against the adjacent short connector tab, and
- adhesive between each long connector tab and the adjacent short connector tab and between each long connector tab and the adjacent end panel at a position beyond said short connector tab for securing said long connector tab to the adjacent short connector tab and to the adjacent end panel thereby forming at least a three-ply wall thickness at each corner.
A method of forming a carton, comprising providing a generally flat carton blank having opposite interior and exterior surfaces and comprising,
- a generally rectangular bottom wall having opposite side edges and opposite ends and four corners,
- a pair of opposite end panels foldably connected to respective opposite ends of said bottom wall,
- right and left side panels foldably connected to respective opposite side edges of said bottom wall,
- each end panel having a top edge, a bottom edge and opposite end panel ends, and a pair of short connector tabs foldably connected to respective end panel ends,
- each side panel having a top edge, a bottom edge and opposite side panel ends and a pair of long connector tabs foldably connected to respective side panel ends,
- each long connector tab protruding from said respective side panel end by a distance greater than the extend that each short connector tab protrudes from said respective end panel end, and
- a cut at least partially separating each long connector tab from the adjacent short connector tab,
- folding said end panels and side panels generally perpendicular to said bottom wall toward said interior surface,
- folding each short connector tab generally 180.degree. against said adjacent end panel,
- folding each long connector tab generally 90.degree. toward said interior side into flush engagement against said adjacent short connector tab, and
- applying adhesive between each long connector tab and the adjacent short connector tab and between each long connector tab and the adjacent end panel at a position beyond the extend of said short connector tab thereby securing each long connector tab to the adjacent short connector tab and to the adjacent end panel and thereby forming at least a three-ply wall thickness at said corner.
Dependencies are inferred from the claim text.