Anti-sifting polygonal carton and methods of assembly

• US 7,690,554 B2
• Filed: 10/12/2006
• Issued: 04/06/2010
• Est. Priority Date: 02/14/2005
• Status: Expired due to Fees

• Current Assignee: Graphic Packaging International Incorporated
• Original Assignee: Graphic Packaging International Incorporated
• Inventors: Brandenburger, Allen M., Zacher, Raymond L.
• Primary Examiner(s): Newhouse; Nathan J
• Assistant Examiner(s): DEMEREE, CHRISTOPHER R
• Application Number:
  US11/548,959
• Publication Number:
  US 20070063002A1
• Time in Patent Office: 1,272 Days
• Field of Search: 229/108, 229/109, 229/200, 229/204, 229/207, 229/227, 229/101.1, 229/123.3, 206/822
• US Class Current: 229/109
• CPC Class Codes: B65D 5/0227 with end closures formed by inward folding of flaps and securing them by heat-sealing, by applying adhesive to the flaps or by staples
• CPC Class Codes: B65D 5/0263 with end closures formed by inward folding of flaps, three of them being formed of a continuous strip, the fourth being a separate flap
• CPC Class Codes: B65D 5/029 the tubular body presenting a special shape pyramidal B65D5/008
• CPC Class Codes: B65D 5/4279 Joints, seams, leakproof joints or corners, special connections between panels B65D5/209 takes precedence
• CPC Class Codes: B65D 5/443 Integral reinforcements, e.g. folds, flaps double walls B65D5/02
• CPC Class Codes: B65D 5/541 the lines of weakness being provided in one or more closure flaps

Abstract

An anti-sifting polygonal carton stores granulated and powdered products. The carton starts as a single blank with four sections: a side, a front, a side, and a rear. The sides have a side panel with two flanking miter panels and two minor flaps. Each miter panel has two opposite miter flaps. The front has a front panel with a second major flap having a tear strip and an opposite second major lower flap having a crease. Separated from the front by a side, the rear has a rear panel having a miter tab opposite the side and a first major flap and an opposite first major lower flap. The fold lines continuous with the miter flaps and the miter tab are reinforced with tape or patches. The tear strip and top of the carton have a pattern of cuts to open and to reclose the carton.

Claims

1. A carton for packaging a product, said carton formed from a single blank of material and comprising:

a front panel;

an opposite rear panel spaced a distance from said front panel, said rear panel substantially parallel to said front panel;

a plurality of side panels oriented substantially perpendicularly to said front panel;

a top comprising a tear strip formed integrally therewith, at least a first cut line extending substantially parallel to the tear strip, and at least a second cut line extending substantially perpendicular to the tear strip and across substantially an entire width of the top, the tear strip being removable from the top to facilitate removing product from the carton, and the second cut line being configured to facilitate removal of at least a portion of the top from the carton;

a bottom opposite the top; and

a plurality of miter panels extending contiguously with said side panels, said front panel, and said rear panels, wherein said front panel, said rear panel, and said plurality of side panels each extend between said top and said bottom, and wherein a portion of one of said miter panels is configured to secure said rear panel to at least one of said side panels such that sifting of the product from said carton is facilitated to be prevented when said carton is fully assembled.

2. A carton in accordance with claim 1 wherein each of said plurality of miter panels comprises at least one miter flap configured to facilitate sealing said carton to prevent sifting of the product from said carton.

3. A carton in accordance with claim 2 wherein each of said at least one miter flaps is triangular-shaped and comprises an emboss pad, said emboss pad facilitating assembly of said carton.

4. A carton in accordance with claim 2 wherein said at least one miter flap comprises a plurality of upper miter flaps and a plurality of lower miter flaps, each of said plurality of upper miter flaps extends outward from each of said miter panels adjacent said top, and each of said plurality of lower miter flaps extends outward from each of said miter panels adjacent said carton bottom.

5. A carton in accordance with claim 1 wherein said top further comprises a first major flap and a second major flap, and wherein a portion of said first major flap is configured to interlock with a portion of said second major flap after said tear strip has been removed.

6. A carton in accordance with claim 1 wherein said top comprises a first major flap and a second major flap, and at least one minor flap, and wherein said first major flap is folded beneath said second major flap and said at least one minor flap when said top is closed.

7. A carton in accordance with claim 1 wherein said bottom comprises a first major flap and a second major flap, and at least one minor flap, and wherein said first major flap is folded beneath said second major flap and said at least one minor flap when said carton bottom is closed.

8. A carton in accordance with claim 1 wherein said carton has an octagonal shape when fully assembled.

9. A method of assembling a carton for packaging a product, said method comprising:

providing a single blank of material;

forming a carton having at least five sides and including a front panel, an opposite rear panel that is spaced a distance from the front panel, and at least two side panels extending substantially perpendicularly from the front panel;

folding a first major lower flap over a second major lower flap and over at least one minor lower flap to form a bottom for the carton, wherein the first and second major lower flaps and the at least one minor lower flap facilitate preventing sifting of the product from the carton; and

folding a first major upper flap over a second major upper flap and over at least one minor upper flap to form a top for the carton, wherein the first and second major upper flaps and the at least one minor upper flap facilitate preventing sifting of the product from the top of the carton;

providing a tear strip formed integrally with one of the first major upper flap and the second major upper flap, wherein the tear strip facilitates removing product from the carton;

forming at least a first cut line extending substantially parallel to said tear strip in one of the first major upper flap and the second major upper flap; and

forming at least a second cut line extending substantially perpendicular to said tear strip in one of the first major upper flap and the second major upper flap and across substantially an entire width of the top, wherein the second cut line is configured to facilitate removal of at least a portion of the top from the carton.

10. A method in accordance with claim 9, wherein forming a carton having at least five sides further comprises forming the carton to include a plurality of miter panels that extend contiguously with the side panels, the front panel, and the rear panel.

11. A method in accordance with claim 10, further comprising folding at least a portion of each miter panel to facilitate coupling the rear panel to at least one side panel.

12. A method in accordance with claim 9 wherein forming a carton having at least five sides further comprises forming the carton to have an octagonal shape when fully assembled.