Flip-top recloseable carton and liner assembly

• US 5,265,799 A
• Filed: 12/14/1992
• Issued: 11/30/1993
• Est. Priority Date: 12/14/1992
• Status: Expired due to Fees

• Current Assignee: Caraustar Industries Incorporated (Greif Incorporated)
• Original Assignee: Packaging Corporation of America
• Inventors: Stone, James L.
• Primary Examiner(s): Elkins, Gary E.
• Application Number:
  US07/990,342
• Time in Patent Office: 351 Days
• Field of Search: 229/224, 229/225, 229/226, 229/160.1, 206/268, 206/273, 220/416, 220/418, 220/441, 220/443, 220/461, 220/462, 220/463, 493/93, 493/95-97, 493/217, 493/906, 493/907
• 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 5/566 Linings made of relatively rigid sheet material, e.g. carton B65D5/0281 and B65D5/58 takes precedence; combined with a flexible lining B65D5/56, B65D5/60; for thermal insulating purposes B65D81/3858; for shock absorbing purposes B65D81/1275
• CPC Class Codes: Y10S 493/907 Lined

Abstract

A flip-top recloseable carton and liner assembly includes a carton in the form of a six-sided parallelopiped enclosure having opposing top and bottom walls, front and back walls, and side walls formed from corresponding panels and flaps defined on a unitary, continuous paperboard blank. The assembly further includes a liner constructed and arranged to fit within the carton, the liner having opposing front and back panels and opposing side panels. The outer layers of the side walls and the front wall of the carton are provided with horizontal tear-strip sections which define an integral and continuous tear strip that functions as convenient means for opening the carton from its sealed form. Repeated closing and positive locking of the carton is realized using a die-cut portion on the liner front panel which includes a proximal flap and an island portion dispersed in forcibly displaceable mutual engagement. Once the engaging flap and island portion are disengaged forcibly by opening the carton top, reclosing thereof leads to snap re-engagement of the flap and island elements accompanied by positive tactile and audible feedback indicative of effective carton closure.

Claims

1. A recloseable liner-container assembly, comprising:

a container including opposing top and bottom walls, opposing front and back walls, and opposing side walls, the side walls and front wall including a contiguous horizontal tear strip for opening up the container from a sealed form to form a lid hingedly attached to a base section;

a liner constructed and arranged for placement within the container and including a front panel and opposing side panels for fitting the liner within the container, the front panel having an outer surface adjacent to an inner surface of the container front wall; and

wherein the liner front panel includes a flap and a flap-receiving portion disposed in forcibly displaceable mutual engagement such that opening the container lid exerts a force which disengages the mutual engagement between the flap and the flap-receiving portion, and reclosing the lid leads to snap re-engagement of the flap and the flap-receiving portion.

2. The recloseable liner-container assembly as recited in claim 1, wherein the snap re-engagement of the flap and the flap-receiving portion is accompanied by positive tactile and audible feedback.

3. The reclosable liner-container assembly as recited in claim 2, wherein the liner and the container are assembled such that the flap-receiving portion is fixedly attached to an inner surface of the container lid and at the same time separately attached to the flap, and wherein opening of the lid separates the flap-receiving portion from the flap while retaining the flap on the liner front panel.

4. The reclosable liner-container assembly as recited in claim 3 wherein the flap-receiving portion includes an island portion.

5. The reclosable liner-container assembly as recited in claim 3 wherein the flap and the flap-receiving portion are separately linked to each other about opposing transverse edges thereof, a distal transverse edge of the flap-receiving portion being separately attached to the liner front panel, wherein opening of the container lid causes the flap-receiving portion to be separated from the flap and the liner front panel and be retained on the inner surface of the container lid.

6. The reclosable liner-container assembly as recited in claim 5 wherein opening of the container lid causes the opposing transverse edge of the flap-receiving portion to push against the opposing transverse edge of the flap until the engagement therebetween is released by relative inward movement of the flap and the liner front panel to which it is attached.

7. The reclosable liner-container assembly as recited in claim 6 wherein the flap-receiving portion includes a tab adapted to be grasped by a user in opening the container lid.

8. The reclosable liner-container assembly as recited in claim 5 wherein reclosing of the container lid causes re-engagement between the opposed transverse edges of the flap-receiving portion and the flap by interaction between the flap and the flap-receiving portion wherein the flap and the liner front panel undergo relative inward movement until the flap-receiving portion realizes snap engagement between the opposed transverse edges accompanied by the positive tactile and audible feedback.

9. The reclosable liner-container assembly as recited in claim 3, wherein the liner further includes an overhanging section connected to an inner surface of the liner front panel, the overhanging section being adjacent to the flap and the flap-receiving portion.

10. A reclosable liner-container assembly, comprising:

a container including opposing top and bottom walls, opposing front and back walls, and opposing side walls, the side walls and front wall including a contiguous horizontal tear strip for opening up the container from a sealed form to form a lid hingedly attached to a base section;

a liner constructed and arranged within the container and including a front panel and opposing side panels for fitting the liner within the container, the front panel having an outer surface adjacent to an inner surface of the container front wall;

wherein the liner front panel includes a die-cut portion, disposed in proximity to the tear strip, having (i) a flap arranged substantially parallel to the tear strip, the flap having a first transverse edge hingedly connected to the liner front panel and (ii) an island portion separatably linked to a second transverse edge of the flap and surrounding sections of the liner front panel by means of weakening nicks, an outer surface of the island portion being fixedly attached to an inner surface of the container lid; and

wherein the flap and the island portion are disposed in forcibly displaceable mutual engagement such that removing the tear strip and opening the container lid causes the island portion to break free of the weakening nicks and to disengage the mutual engagement, and reclosing the lid leads to snap re-engagement of the flap and the island portion.

11. A reclosable liner-container assembly, comprising:

a container including opposing top and bottom walls, opposing front and back walls, and opposing side walls, the side walls and front wall including a contiguous horizontal tear strip for opening up the container from a sealed form to form a lid hingedly attached to a base section;

a liner constructed and arranged for placement within the container and including a front panel and opposing side panels for fitting the liner within the container, the front panel having an outer surface adjacent to an inner surface of the container front wall, the front panel and the side panels having a smaller longitudinal dimension than the respective front wall and side walls of the container such that the front panel and side panels line an upper portion of the front wall and the side walls; and

wherein the liner front panel includes a flap and a flap-receiving portion disposed in forcibly displaceable mutual engagement such that opening the container lid exerts a force which disengages the mutual engagement between the flap and the flap-receiving portion, and reclosing the lid leads to snap re-engagement of the flap and the flap-receiving portion.

12. The reclosable liner-container assembly as recited in claim 11, wherein the front panel and the side panels line approximately an upper one-fourth to one-half of the front wall and the side walls of the container.

13. A method of producing a reclosable liner-container assembly, comprising the steps of:

providing a container paperboard blank having four rectangular panels hingedly connected to each other along parallel transverse score lines, each of the four panels having a pair of end flaps hingedly connected to opposing longitudinal edges of each of the panels and the four panels corresponding to a first side wall, a front wall, a second side wall, and a back wall of the container, wherein a longitudinal tear strip extends integrally across the first side wall, the front wall, and the second side wall;

providing a liner paperboard blank having at least three rectangular panels hingedly connected to each other along parallel transverse score lines, the liner blank panels being sized so that the liner fits snugly within the container, and one of the liner blank panels corresponding to a front panel of the liner, wherein the liner front panel includes a flap and a flap-receiving portion disposed in forcibly displaceable mutual engagement;

positioning the liner blank over the container blank with the liner front panel adjacent to and substantially overlapping the container front wall, the flap and the flap-receiving portion being disposed in proximity to the tear strip;

adhering the flap-receiving portion to the container blank;

shaping the liner blank into the liner; and

shaping the container blank into the container with the liner disposed therein.

14. The method as recited in claim 13, wherein the step of positioning the liner blank over the container blank further includes adhering the liner blank to the container blank.

15. The method as recited in claim 13, further including the step of removing the tear strip to form the container having a lid and a base section, the base section having the liner disposed therein.

16. The method as recited in claim 15, further including the step of opening the lid by exerting a force which disengages the mutual engagement between the flap and the flap-receiving portion.

17. The method as recited in claim 16, further including the step of reclosing the lid by snap-re-engagement of the flap and the flap-receiving portion.