Flip top carton

• US 4,314,643 A
• Filed: 10/27/1980
• Issued: 02/09/1982
• Est. Priority Date: 10/27/1980
• Status: Expired due to Term

• Current Assignee: Meadwestvaco (WestRock Company)
• Original Assignee: Westvaco Corporation (Meadwestvaco Corporation)
• Inventors: Forbes, Hampton E. Jr.
• Primary Examiner(s): Garbe, Stephen P.
• Application Number:
  US06/201,278
• Time in Patent Office: 470 Days
• Field of Search: 229/44 CB, 229/45 R, 206/624, 206/626
• US Class Current: 229/212
• CPC Class Codes: B65D 5/548 for opening containers formed by erecting a blank to U-shape
• CPC Class Codes: Y10S 206/807 Tamper proof

Abstract

A tamperproof, reclosable flip top carton of the side loading type includes reclosure elements on the receptacle portion front wall and the cover portion front wall cover flap. The side walls of the carton are diagonally cut to abut one another when the carton is closed and to provide an opening arrangement which does not require any excessive tearing or removal of carton panels when opened.

Claims

1. A unitary blank of paperboard or the like for making a reclosable flip top carton including a receptacle portion comprising a front wall panel, bottom wall panel and rear wall panel connected end-to-end along parallel spaced apart fold lines, a cover portion foldably attached to said rear wall panel, said cover portion comprising a front wall cover flap, a top cover panel and a pair of side wall cover flaps foldably attached to the ends of said front wall cover flap, a plurality of side wall flaps foldably attached to the opposed free edges of said front and rear wall panels and said bottom wall panel and top cover panel, and a cover portion locking means foldably attached to said front wall, the improvement wherein the cover portion locking means comprises a first locking flap with a free outer edge and tapered side edges foldably attached to the end of said front wall panel and a pair of secondary locking flaps arranged on each side of said first locking flap and detachably connected only to the tapered side edges of said first locking flap.

2. The blank of claim 1 wherein the first locking flap does not extend the full width of the front wall panel so that its tapered side edges lie inboard of the outer edges of the front wall panel and the paired secondary locking flaps occupy the space along said front wall panel between the outer edges of the front wall panel to a point slightly inside of the tapered edges of the first locking flap.

3. The blank of claim 2 wherein the side wall flaps foldably attached to the front wall and to the top cover panel each have diagonally cut outer edges which are angularly related to be complementary with one another.

4. A reclosable, flip top carton formed from a unitary blank of paperboard or the like including a receptacle portion comprising a front wall, bottom wall, side walls and a rear wall, and a flip top cover portion and cover portion locking means foldably attached respectively to the carton rear wall and front wall, the improvement wherein the cover portion locking means comprises a first locking flap having tapered outer edges centrally positioned along the upper edge of said front wall, and a pair of secondary locking flaps of abbreviated length that occupy the space along said front wall outboard of said first locking flap and which are detachably connected only to the tapered edges of said first locking flap.

5. The carton of claim 4 wherein the flip top cover portion comprises a front wall cover flap, a top cover panel, a pair of front wall cover flap side walls and a pair of top cover panel side wall flaps.

6. The carton of claim 5 wherein the side wall flaps foldably attached to the front panel of the receptacle portion and the top cover panel of the cover portion each have diagonally cut outer edges which are angularly related to abut one another in a complementary fashion when the carton is closed.

7. The carton of claim 6 wherein the secondary locking flaps are releasably adhered to the receptacle portion front wall and permanently adhered to the cover portion front wall cover flap when the carton is closed.

8. The carton of claim 7 wherein upon opening the closed carton, the releasable connection between said secondary locking flaps and the carton front wall is broken and the detachable connection between said secondary locking flaps and the first locking flap is fractured leaving the secondary locking flaps attached to the front wall cover flap for subsequent reengagement upon reclosure of the cover portion.