Flip-lock reclosable carton

• US 4,289,240 A
• Filed: 10/01/1979
• Issued: 09/15/1981
• Est. Priority Date: 10/01/1979
• Status: Expired due to Term

• Current Assignee: James River Paper Company, Inc.
• Original Assignee: United States Gypsum Company (GEBR Knauf Verwaltungsgesellschaft KG)
• Inventors: Mueller, David C.
• Primary Examiner(s): Garbe, Stephen P.
• Application Number:
  US06/080,550
• Time in Patent Office: 715 Days
• Field of Search: 206/624, 206/625, 206/626, 206/611, 206/621, 229/33, 229/45 R
• US Class Current: 229/226
• CPC Class Codes: B65D 5/5435 and defining after rupture a lid hinged to the side edge of the container body

Abstract

A reclosable carton having a receptacle portion and a cover portion which is adapted to hingedly close and lock onto the receptacle portion. A reinforcing flap is hingedly connected across the top front edge of the receptacle portion of the carton to resist bowing of a partially emptied carton. An extension flap is adhered to the front panel of the carton and splits away from a depending front flap of the cover as the cover of the carton is initially opened by a user. A locking tab is formed by the detachment of a portion of the extension flap which remains hingedly connected to the front flap. The locking tab engages the edges of the void from which it was removed to provide a locking action on reclosure. The locking tab easily disengages with a toggle action upon reopening of the cover.

Claims

1. A carton having a cover portion which is hingedly reclosable over a receptacle portion, comprising:

(a) a front receptacle panel having top, bottom and side edges;

(b) a pair of receptacle end panels connected at their front edges to the side edges of said front panel and extending rearwardly therefrom with their top edges at the top edge of said front panel;

(c) a bottom receptacle panel having front, rear, and side edges and being connected at its front edge to the bottom edge of said front panel and extending rearwardly therefrom;

(d) a rear receptacle panel having top, bottom and side edges and being connected at its bottom edge to the rear edge of said bottom panel and extending upwardly therefrom;

(e) a relatively narrow reinforcing flap hingedly connected to the top edge of said front panel along the length thereof and extending rearwardly therefrom;

(f) a top cover panel having front, rear, and side edges and being hingedly connected at its rear edge to the top edge of said rear panel and extending frontwardly therefrom;

(g) a front cover flap having top, bottom, and side edges and being connected at its top edge to the front edge of said top panel and extending downwardly therefrom over a portion of said front panel; and

(h) an extension flap connected to the bottom edge of said front cover flap and lying between said front cover flap and said front panel and being secured to said front panel along its length, a centrally disposed portion of said extension flap being connected to said front flap by a hinge line and being bounded by a cut line of weakness in said extension flap to define a locking tab which is not secured to said front panel, the remainder of said extension flap being connected to said front cover flap by a cut line of weakness.

2. A carton having a cover portion which is hingedly reclosable over a receptacle portion, comprising:

(a) a front receptacle panel having top, bottom and side edges;

(b) a pair of receptacle end panels connected at their front edges to the side edges of said front panel and extending rearwardly therefrom with their top edges at the top edge of said front panel;

(c) a bottom receptable panel having front, rear, and side edges and being connected at its front edge to the bottom edge of said front panel and extending rearwardly therefrom;

(d) a rear receptacle panel having top, bottom and side edges and being connected at its bottom edge to the rear edge of said bottom panel and extending upwardly therefrom;

(e) a relatively narrow reinforcing flap hingedly connected to the top edge of said front panel along the length thereof and extending rearwardly therefrom;

7. The carton of claim 5 or 2 including a pair of side cover flaps connected to the side edges of said top panel and depending downwardly therefrom over said end tabs, connecting tabs and end panels, and being secured to said end tabs.

9. The carton of claim 7 including a pair of receptacle end flaps connected to the side edges of said bottom panel which lie over and are secured to said rear receptacle flaps and said receptacle end panels.

11. The blank of claim 9 further including:

a pair of receptacle end flaps hingedly connected to the side edges of said bottom panel;

a pair of rear receptacle flaps hingedly connected to the side edges of said rear panel; and

a pair of side cover flaps hingedly connected to the side edges of said top panel.

12. The blank of claim 9 further including a pair of connecting tabs hingedly connected to top edges of said receptacle end panels by cut lines of weakness at positions adjacent the hinged connections of said receptacle end panels to said front panel, and

a pair of end tabs hingedly connected to the side edges of said front cover flap.

13. The blank of claim 9 wherein an adhesive is applied to one side of the blank on said receptacle end flaps and side cover flaps, and along the length of said extension flap on the opposite side of the blank at a position not covering the area of said extension flap defining the locking tab.

3. (f) a top cover panel having front, rear, and side edges and being hingedly connected at its rear edge to the top edge of said rear panel and extending frontwardly therefrom;

(g) a front cover flap having top, bottom, and side edges and being connected at its top edge to the front edge of said top panel and extending downwardly therefrom over a portion of said front panel;

(h) a pair of connecting tabs connected by cut lines of weakness to the top edges of said receptacle end panels, each said connecting tab being connected to its respective end panel at a position adjacent to the connection of the respective end panel to said front panel and lying against said receptacle end panels; and

(i) a pair of end tabs connected to the side edges of said front flap and extending rearwardly therefrom to lie over and be secured to said connecting tabs.

5. The carton of claim 3 including a relatively narrow reinforcing flap hingedly connected to the top edge of said front panel along the length thereof and extending rearwardly therefrom.

6. The carton of claim 3 including:

a pair of connecting tabs connected by cut lines of weakness to the top edges of said receptacle end panels, each said connecting tab being connected to its respective end panel at a position adjacent to the connection of the respective end panel to said front panel and lying against said receptacle end panels, and

a pair of end tabs connected to the side edges of said front flap and extending rearwardly therefrom to lie over and be secured to said connecting tabs.

8. The carton of claim 6 including a pair of rear receptable flaps connected to the side edges of said rear panel which lie over and coplanar with said receptacle end panels.

4. A carton having a cover portion which is hingedly reclosable over a receptacle portion, comprising:

(a) a front receptacle panel having top, bottom and side edges;

(b) a pair of receptacle end panels connected at their front edges to the side edges of said front panel and extending rearwardly therefrom with their top edges at the top edge of said front panel;

(c) a bottom receptacle panel having front, rear, and side edges and being connected at its front edge to the bottom edge of said front panel and extending rearwardly therefrom;

(d) a rear receptacle panel having top, bottom and side edges and being connected at its bottom edge to the rear edge of said bottom panel and extending upwardly therefrom;

(e) a top cover being having front, rear, and side edges and being hingedly connected at its rear edge to the top edge of said rear panel and extending frontwardly therefrom;

(f) a front cover flap having top, bottom, and side edges and being connected at its top edge to the front edge of said top panel and extending downwardly therefrom over a portion of said front panel; and

(g) an extension flap connected to the bottom edge of said front cover flap and lying between said front cover flap and said front panel and being secured to said front panel along its length, a centrally disposed portion of said extension flap being connected to said front flap by a hinge line and being bounded by a cut line of weakness in said extension flap to define a locking tab which is not secured to said front panel, the remainder of said extension flap being connected to said front cover flap by a cut line of weakness.

10. A unitary carton blank for forming a carton having a cover portion hingedly reclosable over a receptacle portion, said blank comprising:

(a) a front receptacle panel having top, bottom and side edges;

(b) a rear receptacle panel having top, bottom and side edges;

(c) a bottom receptacle panel having front, rear and side edges and being hingedly connected at its front edge to the bottom edge of said front panel and at its rear edge to the bottom edge of said rear panel;

(d) a top cover panel having front, rear and side edges and being hingedly connected at its rear edge to the top edge of said rear panel;

(e) a front cover flap having top, bottom, and side edges and being hingedly connected at its top edge to the front edge of said top panel;

(f) an extension flap hingedly connected to the bottom edge of said front cover flap, a centrally disposed portion of said extension flap being connected to said front cover flap by a hinge line and being bounded by a cut line of weakness in said extension flap to define a locking tab, the remainder of said extension flap being connected to said front cover flap by a cut line of weakness;

(g) a relatively narrow reinforcing flap hingedly connected to the top edge of said front panel; and

(h) a pair of receptacle end panels hingedly connected at front edges to the side edges of said front panel.