Easy opening carton having improved stacking strength

• US 8,011,564 B2
• Filed: 10/09/2008
• Issued: 09/06/2011
• Est. Priority Date: 10/11/2007
• Status: Expired due to Fees

• Current Assignee: Georgia Pacific Corrugated LLC (KOCH Industries Incorporated)
• Original Assignee: Georgia Pacific Corrugated LLC (KOCH Industries Incorporated)
• Inventors: Garner, Chester
• Primary Examiner(s): Elkins; Gary E
• Application Number:
  US12/248,060
• Publication Number:
  US 20090095799A1
• Time in Patent Office: 1,062 Days
• Field of Search: 229/109, 229/110, 229/240, 229/241, 229/242, 229/112, 229/137
• US Class Current: 229/110
• CPC Class Codes: B65D 2571/00141 glued
• CPC Class Codes: B65D 2571/00444 for fingers
• CPC Class Codes: B65D 2571/00574 whereby contents can still be carried after the line has been torn
• CPC Class Codes: B65D 2571/0066 formed from one single sheet
• CPC Class Codes: B65D 2571/00728 the end walls being closed by gluing
• CPC Class Codes: B65D 2571/00833 Other details of wrappers
• CPC Class Codes: B65D 2571/00895 for stacking one upon the other
• CPC Class Codes: B65D 71/36 having a tubular shape, e.g. tubular wrappers, with end walls
• CPC Class Codes: B65D 81/26 with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents B65D33/01 takes precedence; Applications of corrosion inhibitors or desiccators

Abstract

A carton having a dispensing opening. The carton can be formed from a paperboard blank so it has six corners and two corner panels and has perforations formed therein to provide an easy opening feature for dispensing product. In addition, the formed carton has improved stacking strength.

Claims

1. A carton, comprising:

a top;

a bottom spaced from the top;

a first side wall interconnecting the top and the bottom;

a second side wall generally parallel to and spaced from the first side wall and interconnecting the top and the bottom;

a first end wall adjoining the top and the bottom;

a second end wall generally parallel to and spaced from the first end wall and adjoining the top and the bottom and wherein the second end wall is removably interconnected to the second side wall by a perforation line;

a first corner panel adjoining the first end wall, the first side wall, the top and the bottom, the first corner panel comprising a first edge disposed in direct contact with an edge of the first end wall, a second edge disposed in direct contact with an edge of the first side wall, a third edge disposed in direct contact with an edge of the top, and a fourth edge disposed in direct contact with an edge of the bottom; and

a second corner panel adjoining the second end wall, the first side wall, the top and the bottom and wherein the second corner panel is removably interconnected to the top, the bottom and the first side wall.

2. The carton of claim 1 wherein the perforation line interconnecting the second end wall to the second side wall has an arcuate shape.

3. The carton of claim 1 wherein the first side wall has a first cross sectional area and the second side wall has a second cross sectional area such that the first cross sectional area is less than the second cross sectional area.

4. The carton of claim 3 wherein the first side wall has a first width and the second side wall has a second width such that the first width is less than the second width.

5. The carton of claim 1 wherein the first corner panel adjoins the first end wall at an obtuse included angle.

6. The carton of claim 5 wherein the second corner panel adjoins the second end wall at an obtuse included angle.

7. The carton of claim 1, wherein:

the second corner panel comprises a first edge disposed in direct contact with an edge of the second end wall, a second edge disposed in direct contact with an edge of the first side wall, a third edge disposed in direct contact with an edge of the top, and a fourth edge disposed in direct contact with an edge of the bottom.

8. A blank, comprising:

an adhesive tab;

a first side panel connected to the adhesive tab along a first fold line;

a bottom panel connected to the first side panel along a second fold line;

a second side panel connected to the bottom panel along a third fold line;

a top panel connected to the second side panel along a fourth fold line;

a first side panel top flap extending above the first side panel above a fifth fold line;

a first side panel bottom flap extending below the first side panel below a sixth fold line;

a bottom panel top flap extending above the bottom panel above a first perforation line;

a bottom panel bottom flap extending below the bottom panel below a seventh fold line;

a first corner panel extending above the second side panel above a second perforation line;

a first corner panel top flap extending above the first corner panel above an eighth fold line, wherein the first corner panel comprises a first edge disposed in direct contact with an edge of the second side panel, and a second edge disposed in direct contact with an edge of the first corner panel top flap;

a second corner panel extending below the second side panel below a ninth fold line;

a second corner panel bottom flap extending below the second corner panel below a tenth fold line;

a top panel top flap extending above the top panel above a third perforation line; and

a top panel bottom flap extending below the top panel below an eleventh fold line.

9. The blank of claim 8 wherein the first side panel and the second side panel each has a generally rectangular cross section.

10. The blank of claim 9 wherein the cross sectional area of the first side panel is greater than the cross sectional area of the second side panel.

11. The blank of claim 10 wherein the lengths of the first fold line and the second fold line are greater than the lengths of third fold line and the fourth fold line.

12. The blank of claim 8 further including a fourth perforation formed in the upper portion of the first side panel extending from the first fold line adjacent to the fifth fold line to the second fold line adjacent to the fifth fold line.

13. The blank of claim 12 wherein the fourth perforation has an arcuate shape.

14. A carton, comprising:

a top;

a bottom spaced from the top;

a first side wall interconnecting the top and the bottom;

a second side wall generally parallel to and spaced from the first side wall and interconnecting the top and the bottom;

a first end wall adjoining the top and the bottom;

a second end wall generally parallel to and spaced from the first end wall and adjoining the top and the bottom and wherein the second end wall is removably interconnected to the second side wall by a perforation line;

a first corner panel adjoining the first end wall, the first side wall, the top and the bottom;

a second corner panel adjoining the second end wall, the first side wall, the top and the bottom and wherein the second corner panel is removably interconnected to the top, the bottom and the first side wall; and

wherein the carton is formed from a blank having an adhesive tab;

a first side panel connected to the adhesive tab along a first fold line;

a bottom panel connected to the first side panel along a second fold line;

a second side panel connected to the bottom panel along a third fold line;

a top panel connected to the second side panel along a fourth fold line;

a first side panel top flap extending above the first side panel above a fifth fold line;

a first side panel bottom flap extending below the first side panel below a sixth fold line;

a bottom panel top flap extending above the bottom panel above a first perforation line;

a bottom panel bottom flap extending below the bottom panel below a seventh fold line;

a first corner panel extending above the second side panel above a second perforation line;

a first corner panel top flap extending above the first corner panel above an eighth fold line, wherein the first corner panel comprises a first edge disposed in direct contact with an edge of the second side panel, and a second edge disposed in direct contact with an edge of the first corner panel top flap;

a second corner panel extending below the second side panel below a ninth fold line;

a second corner panel bottom flap extending below the second corner panel below a tenth fold line;

a top panel top flap extending above the top panel above a third perforation line; and

a top panel bottom flap extending below the top panel below an eleventh fold line.

15. The carton of claim 14 wherein the first side wall has a first cross sectional area and the second side wall has a second cross sectional area such that the first cross sectional area is less than the second cross sectional area.

16. The carton of claim 15 wherein the first side wall has a first width and the second side wall has a second width such that the first width is less than the second width.

17. The carton of claim 14 wherein the first corner panel adjoins the first end wall at an obtuse included angle.

18. The carton of claim 17 wherein the second corner panel adjoins the second end wall at an obtuse included angle.

19. The carton of claim 14 further including a fourth perforation formed in the upper portion of the first side panel extending from the first fold line adjacent to the fifth fold line to the second fold line adjacent to the fifth fold line.

20. The blank of claim 19 wherein the fourth perforation has an arcuate shape.