Flip-top reclosable container with integrally formed collar

• US 5,875,963 A
• Filed: 04/29/1997
• Issued: 03/02/1999
• Est. Priority Date: 04/29/1997
• Status: Expired due to Fees

• Current Assignee: Caraustar Industries Incorporated (Greif Incorporated)
• Original Assignee: Tenneco Packaging
• Inventors: Brink, Thomas J., Stone, James L.
• Primary Examiner(s): Elkins, Gary E.
• Application Number:
  US08/841,128
• Time in Patent Office: 672 Days
• Field of Search: 229/141, 229/144, 229/145, 229/154, 229/223-227, 229/905, 493/128-132, 493/162, 493/167-174, 493/183
• US Class Current: 229/225
• CPC Class Codes: B65D 5/543 the container being provided with an internal frame or the like for maintaining the lid in the closed position by friction
• CPC Class Codes: B65D 5/6608 the lid being held in closed position by self-locking integral flaps

Abstract

A flip-top reclosable carton is comprised of an outer carton and an internal collar. The outer carton includes opposing top and bottom walls, opposing front and back walls, and opposing first and second side walls. The first and second side walls and the front wall include a continuous horizontal tear means for opening up the carton from a sealed form to form a lid hingedly connected to a base. The top wall includes first and second top minor flaps hingedly connected to upper ends of the respective first and second side walls. The internal collar is integrally formed with the first and second top minor flaps. The collar is disposed within the carton and includes a front panel and opposing first and second side panels adjacent to the respective front wall and the opposing first and second side walls of the carton. The collar includes at least one hinged portion and at least one island portion disposed in forcibly displaceable mutual engagement such that opening the lid exerts a force which disengages the mutual engagement and closing the lid leads to snap re-engagement of the hinged portion and the island portion.

Claims

1. A flip-top reclosable container comprising:

an outer carton including opposing top and bottom walls, opposing front and back walls, and opposing first and second side walls, said first and second side walls and said front wall including a continuous horizontal tear means for opening up said carton from a sealed form to form a lid hingedly connected to a base, said top wall including first and second top minor flaps hingedly connected to upper ends of said respective first and second side walls; and

an internal collar integrally formed with said first and second top minor flaps, said collar disposed within said carton, said collar including a front panel and opposing first and second side panels adjacent to said respective front wall and said opposing first and second side walls of said carton, said collar including at least one hinged portion and at least one island portion disposed in forcibly displaceable mutual engagement such that opening said lid exerts a force which disengages the mutual engagement and closing said lid leads to snap re-engagement of said hinged portion and said island portion.

2. The container of claim 1, wherein said island portion is fixedly attached to an inner surface of said lid and at the same time separatably attached to said hinged portion, wherein opening said lid separates said island portion from said hinged portion while retaining said island portion on said lid.

3. The container of claim 1, wherein said collar includes an extension flap hingedly connected to said front panel, said extension flap forming said island portion and said hinged portion.

4. The container of claim 1, wherein said island portion is fixedly attached to an inner surface of said lid and at the same time separatably attached to said hinged portion, wherein opening said lid separates said island portion from said hinged portion while retaining said island portion on said lid, wherein said collar includes a backboard flap hingedly connected to said front panel and overlapping said hinged portion and said island portion, said front panel forming said island portion and said hinged portion, said backboard flap being exposed in response to opening said lid.

5. The container of claim 1, wherein said at least one hinged portion includes first and second hinged portions and said at least one island portion includes first and second island portions, wherein said collar includes first and second extension flaps hingedly connected to said respective first and second side panels, said first and second extension flaps forming said respective first and second island portions and forming said respective first and second hinged portions.

6. The container of claim 1, wherein said at least one hinged portion includes first and second hinged portions and said at least one island portion includes first and second island portions, wherein said first and second island portions are fixedly attached to an inner surface of said lid and at the same time separatably attached to said respective first and second hinged portions, wherein opening said lid separates said first and second island portions from said respective first and second hinged portions while retaining said island portions on said lid, wherein said collar includes first and second backboard flaps hingedly connected to said respective first and second side panels, said first backboard flap overlapping said first hinged portion and said first island portion, said second backboard flap overlapping said second hinged portion and said second island portion, said first and second side panels forming said respective first and second island portions and forming said respective first and second hinged portions, said backboard flaps being exposed in response to opening said lid.

7. The container of claim 1, wherein said first and second top minor flaps each include an outer primary portion and an inner secondary portion, said secondary portion overlapping and being adhered to said primary portion, said collar being hingedly connected to said secondary portion of each of said top minor flaps.

8. The container of claim 1, wherein said first and second side panels of said collar are hingedly connected to said respective first and second top minor flaps prior to initially opening said lid.

9. The container of claim 1, wherein said collar includes cutout wedges along fold lines joining said front panel to said first and second side panels.

10. The container of claim 1, wherein said front panel and said first and second side panels of said collar are adhered to inner surfaces of said respective front wall and opposing first and second side walls of said carton at locations below said tear means.

11. The container of claim 1, wherein said internal collar is hingedly connected to said first and second top minor flaps prior to initially opening said lid, and wherein opening said lid breaks the hinged connection between said collar and said first and second top minor flaps.

12. A method of manufacturing a flip-top reclosable container, comprising the steps of:

providing a blank including a carton-forming portion and a collar-forming portion, said carton-forming portion having carton front and back wall panels and first and second carton side wall panels hingedly connected to each other along vertical fold lines, said carton-forming portion including a plurality of top and bottom closure flaps hingedly connected to respective upper and lower ends of said carton wall panels, said top closure flaps including first and second top minor flaps, said collar-forming portion including a collar front panel and first and second collar side panels hingedly connected to each other along vertical fold lines, said first and second collar side panels being hingedly connected to said respective first and second top minor flaps along horizontal fold lines, said collar-forming portion including at least one hinged portion and at least one island portion disposed in forcibly displaceable mutual engagement;

folding said blank so that said collar front panel and said opposing first and second collar side panels are adjacent to said respective carton front wall panel and opposing first and second carton side wall panels;

adhering said collar front panel and said opposing first and second collar side panels to said respective carton front wall panel and opposing first and second carton side wall panels;

adhering said island portion to said carton-forming portion; and

forming said blank into said reclosable container, said container including an outer carton formed from said carton-forming portion and an internal collar formed from said collar-forming portion.

13. The method of claim 12, wherein said collar-forming portion includes an extension flap hingedly connected to said collar front panel, said extension flap forming said island portion and said hinged portion.

14. The method of claim 12, wherein said collar-forming portion includes a backboard flap hingedly connected to said collar front panel, said collar front panel forming said island portion and said hinged portion.

15. The method of claim 12, wherein said at least one hinged portion includes first and second hinged portions and said at least one island portion includes first and second island portions, wherein said collar-forming portion includes first and second extension flaps hingedly connected to said respective first and second collar side panels, said first and second extension flaps forming said respective first and second island portions and forming said respective first and second hinged portions.

16. The method of claim 12, wherein said at least one hinged portion includes first and second hinged portions and said at least one island portion includes first and second island portions, wherein said collar-forming portion includes first and second backboard flaps hingedly connected to said respective first and second collar side panels, said first and second collar side panels forming said respective first and second island portions and forming said respective first and second hinged portions.

17. The method of claim 12, wherein said first and second top minor flaps each include a primary portion and a secondary portion, said collar-forming portion being hingedly connected to said secondary portion of each of said top minor flaps.

18. The method of claim 14, further including the step of folding said backboard flap relative to said collar front panel such that said backboard flap overlaps said hinged portion and said island portion.

19. The method of claim 16, further including the step of folding said first and second backboard flaps relative to said respective first and second collar side panels such that said first backboard flap overlaps said first hinged portion and said first island portion and said second backboard flap overlaps said second hinged portion and said second island portion.

20. The method of claim 17, further including the steps of folding said secondary portion of each of said top minor flaps relative to said primary portion such that said secondary portion overlaps said primary portion and adhering said secondary portion to said primary portion.

21. The container of claim 12, wherein said collar-forming portion includes cutout wedges along said vertical fold lines joining said collar front panel to said first and second collar side panels.