Leak resistant feature for bliss box

Patent metadata

Field	Value
Publication number	US-11618607-B2
Application number	US-202117381340-A
Country	US
Kind code	B2
Filing date	Jul 21, 2021
Priority date	Oct 10, 2018
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

A leak resistant bliss-type container comprising a first blank defining a bottom wall, opposed first side walls hingedly connected to longitudinal edges of the bottom wall and extending upwardly from the bottom wall, a vertical side flange hingedly connected to each of a pair of opposing lateral edges of the first side walls, and opposing bottom flanges hingedly connected to lateral edges of the bottom wall and extending upwardly in overlapping relation to the vertical side flanges. Second and third identical end blanks are provided, each end blank defining at least an end wall secured in overlapping relation to the vertical side flanges. A corner piece is defined by a web of material, each corner piece extending between a longitudinal edge of one of the vertical side flanges and a longitudinal edge of the bottom flange to define a leak resistant corner.

First claim

What is claimed is:

1. A leak resistant bliss-type container comprising:
a first blank defining a bottom wall, opposed first side walls hingedly connected to longitudinal edges of the bottom wall and extending upwardly from the bottom wall, a vertical side flange hingedly connected to each of a pair of opposing lateral edges of the first side walls, and opposing bottom flanges hingedly connected to lateral edges of the bottom wall and extending upwardly in overlapping relation to the vertical side flanges;
second and third identical end blanks, each end blank defining at least an end wall such that corresponding ones of the vertical side flanges are positioned between the end wall and the corresponding bottom flange;
corner pieces each defined by a web of material, each corner piece extending between a longitudinal edge of one of the vertical side flanges and a longitudinal edge of the bottom flange to define a leak resistant corner;
wherein each vertical side flange is separated from an adjacent bottom flange on the first blank by a flange cut extending from a lateral edge of the first blank toward a respective lateral edge of the bottom wall; and
wherein hinge connections for the opposed first side walls are defined on the first blank by respective longitudinal fold lines, and the longitudinal edges of the bottom flanges are displaced longitudinally inwardly from respective adjacent longitudinal fold lines and respective longitudinal edges of the vertical side flanges by a distance substantially equal to a longitudinal dimension of a corresponding one of the corner pieces.

2. The container as set forth in claim 1 , wherein the web of material defining each corner piece extends laterally from a lateral edge of the bottom wall to a terminal end of the flange cut spaced from the lateral edge of the bottom wall.

3. The container as set forth in claim 2 , wherein a lateral dimension of each corner piece, extending on the first blank from a lateral edge of the bottom wall to the terminal end of the flange cut, is generally equal to a dimension extending across the flange cut between the longitudinal edges of a bottom flange and a longitudinal edge of an adjacent vertical side flange.

4. The container as set forth in claim 3 , wherein the container includes a fold line extending diagonally across each corner piece to define first and second generally triangular corner piece halves, the first blank being formed of a corrugated paperboard material having internal flutes, wherein flutes in at least one of the corner piece halves extend in a vertical direction.

5. The container as set forth in claim 1 , wherein the longitudinal edges of the vertical side flanges are generally aligned with the respective longitudinal fold lines.

6. The container as set forth in claim 1 , wherein the first blank comprises corrugated cardboard and flutes in the corner pieces and in the vertical side flanges extend vertically, and the vertical side flanges extend from the bottom wall to upper edges of the first side walls.

7. The container as set forth in claim 1 , wherein the first blank comprises corrugated cardboard and flutes in the corner pieces and in the vertical side flanges extend vertically, and the vertical side flanges extend from a location spaced above the bottom wall to upper edges of the first side walls.

8. The container as set forth in claim 1 , wherein each end blank includes a pair of intermediate walls hingedly connected to opposing longitudinal edges of the end wall and partial side walls hingedly connected to the intermediate walls and secured to respective inner surfaces of the first side walls.

9. The container as set forth in claim 1 , wherein each bottom flange is secured to outer surfaces of an adjacent pair of the vertical side flanges.

10. A leak resistant bliss-type container comprising:
a first blank defining a bottom wall, opposed first side walls hingedly connected to longitudinal edges of the bottom wall and extending upwardly from the bottom wall, a vertical side flange hingedly connected to each of a pair of opposing lateral edges of the first side walls, and opposing bottom flanges hingedly connected to lateral edges of the bottom wall such that an upward pivoting of each bottom flange causes the bottom flange to overlap outer surfaces of an adjacent pair of the vertical side flanges;
second and third identical end blanks, each end blank defining at least an end wall secured in overlapping relation to the vertical side flanges; and
corner pieces each defined by a folded web of material pinched between one of the bottom flanges and an adjacent one of the vertical side flanges to define a leak resistant corner;
wherein each vertical side flange is separated from an adjacent one of the bottom flanges on the first blank by a flange cut extending from a lateral edge of the first blank toward a respective lateral edge of the bottom wall;
wherein hinge connections for the opposed first side walls are defined on the first blank by respective longitudinal fold lines, and the longitudinal edges of the bottom flanges are displaced longitudinally inwardly from respective adjacent longitudinal fold lines and respective longitudinal edges of the vertical side flanges by a distance substantially equal to a longitudinal dimension of a corresponding one of the corner pieces.

11. The container as set forth in claim 10 , wherein each corner piece is integrally formed with the one bottom flange and the adjacent one vertical side flange.

12. The container as set forth in claim 11 , wherein each corner piece is formed of longitudinal end portions of the one bottom flange and comprises triangular halves pivoted into overlapping relationship.

13. A blank construction for a leak resistant bliss-type container comprising:
first, second, and third blanks securable together;
the first blank comprising:
a central bottom wall having opposing longitudinal edges and opposing lateral edges;
a first side wall hingedly connected to each of the longitudinal edges of the bottom wall at a respective longitudinal fold line, each first side wall including an inner surface and opposing lateral edges;
a bottom flange hingedly connected to each of the opposing lateral edges of the bottom wall at respective bottom flange fold lines; and
a vertical side flange hingedly connected to each lateral edge of the first side walls at respective side flange fold lines for overlapping relationship with an adjacent bottom flange, each vertical side flange separated from the adjacent bottom flange by a flange cut extending laterally from a lateral edge of the first blank and each vertical side flange being securable to a respective adjacent bottom flange;

each of the second and third blanks comprising:
an end wall having opposing longitudinal edges; and
partial side walls hingedly connected to the end wall, and each partial side wall securable to the inner surfaces of the first side walls; and

a corner piece extending laterally into each flange cut, each corner piece extending from a location adjacent to a bottom wall lateral edge toward a respective lateral edge of the first blank to define leak resistant corners when the bottom flanges and vertical side flanges are pivoted into overlapping relationship;
wherein each of pairs of the vertical side flanges are positionable between an adjacent one of the end walls and an adjacent one of the bottom flanges, each of the bottom flanges has a longitudinal dimension sufficient to allow the bottom flange to overlap with the corresponding pair of vertical side flanges when the corresponding pair of vertical side flanges is positioned between the adjace

Assignees

• Int Paper Co

Inventors

• Sloan Ii James William

Classifications

• B65D5/6632

  the lid-halves being held in closed position by flaps or tabs provided at their side edges only (B65D5/6644, B65D5/6647 take precedence) · CPC title

• B65D5/4279

  Joints, seams, leakproof joints or corners, special connections between panels (B65D5/209 takes precedence) · CPC title

• B65D5/4266

  Folding lines, score lines, crease lines · CPC title

• B65D5/323 Primary

  and two further opposed body panels formed from two essentially planar blanks · CPC title

• B65D5/24

  with adjacent sides interconnected by gusset folds · CPC title