Shrink-wrap packaging incorporating reinforced integral handle

Abstract

Shrink-wrap packaging is provided with at least one reinforced integral handle. Each handle is formed by an opening formed in the shrink-wrap material, and a reinforced area that surrounds the opening. Preferably two handles are located at opposite ends or sides of the package. The reinforced areas include an additional layer of the shrink-wrap film, or may include other material such as other types of thermoplastics, paper/fiber composites, or combinations thereof. Shading may be applied to the reinforced areas in order that a consumer can more easily recognize the openings in the shrink-wrap as designated handles.

Description

FIELD OF THE INVENTION

The present invention relates to packaging used to package consumer goods, and more particularly, to shrink-wrap packaging incorporating a reinforced integral handle.

BACKGROUND OF THE INVENTION

For beverage containers, one traditional method of packaging includes the use of paperboard or cardboard packages. For beverage cans, it is common to find 12 or 24-pack arrangements of the containers packaged in a paperboard or cardboard container. For bottles, the most typical arrangement is a 6-pack container made of a paperboard material.

More recently, shrink-wrap packaging has been used to package many types of beverage containers, such as 12 or 24-pack arrangements of beverage cans and plastic beverage containers. For example, it is well known to provide shrink-wrap packaging for 24-pack arrangements of bottled water and soft drinks.

In a packaging operation, the group of containers to be packaged are wrapped with shrink-wrap material and then the group of containers pass through a heat tunnel or heat station causing the shrink-wrap film to shrink around and tightly hold the group of containers together. Prior to heat treatment, the shrink-wrap film is dispensed from a roll of shrink-wrap material that is sized to cover the particular group of containers. Typically, the opposite sides or ends of the package each have an opening where the shrink-wrap material does not completely enclose the containers.

Shrink-wrap packaging has many advantages over traditional paperboard/cardboard packaging. Shrink-wrap film is typically made from polyethylene. Polyethylene is a durable material that costs considerably less than paperboard/cardboard. Polyethylene readily accepts printing or other forms of coloration or shading that is desired to be placed on the packaging. However, one disadvantage of shrink-wrap material is that there is no inherent feature in the material itself which leads itself for providing a handle or grasping means. It is known that consumers will often attempt to carry a shrink-wrapped package by grasping the openings formed by the shrink-wrap material that does not completely enclose the opposite ends of the package. Because of the irregular shape of these openings, as well as the non-reinforced nature of the shrink-wrap material surrounding the openings, grasping the shrink-wrap material through the openings can cause the material to tear, thus destroying the package and causing the containers to separate from the package.

Therefore, there is a need for an integral handle or grasping structure that allows the shrink-wrap package to be easily carried by the consumer, without the concern of breaking the package open by tears caused by the weight of the package concentrated at the point where the package is grasped.

SUMMARY OF THE INVENTION

In accordance with the present invention, shrink-wrap packaging is provided that incorporates a reinforced integral handle. The handle is formed by providing a reinforced area around the opening in the shrink-wrap material that does not completely cover the containers, typically located on opposite sides or ends of the package.

The reinforced area is provided in accordance with various embodiments of the present invention. In one embodiment, the reinforced area is provided by an additional layer of the shrink-wrap film. This additional layer of material may be provided by folding the lateral edges of the sheet of shrink-wrap material to form strips of doubly reinforced material. The folded edges may be secured to the sheet of shrink-wrap material in any number of ways to include adhesive or heat-treating the shrink-wrap material at that location so the layers adhere to one another. In another embodiment of the invention, the reinforced areas may be formed by applying separate second layers of material to each lateral edge of the sheet of shrink-wrap film. These second layers of material may include precut strips of shrink-wrap film or other materials such as various types of paper/fiber composites, or other types of thermoplastic material.

It is preferable that heat treating of the shrink-wrap material, results in creation of openings at opposite ends of the package that are uniform in size, and that are symmetrical. Also, it is preferable that these openings are substantially round or oval, and centered on ends of the package so that a consumer can insert their fingers through one or both openings to effectively grasp and carry the package at many different angles.

Optionally, desired shading may be applied to the reinforced area in order that a consumer can more easily recognize the openings in the shrink-wrap as designated handles. The term “shading” as used herein shall be understood to encompass any method by which the reinforced area surrounding an opening is distinguished from the remaining shrink-wrap material. The shading may include ink or other coloring agents that may be applied to the reinforced area prior to heat treatment of the shrink-wrap material, or shading applied after heat treatment. One preferred way in which to apply the shading is by printing the reinforced areas with ink prior to heat treatment.

The integral handle of the present invention may be used with any number of different types of packaging arrangements. For example, the handle may be provided on 6, 12, or 24-pack container arrangements. Additionally, the handle may be incorporated in packaging that includes only shrink-wrap material, or packaging that also incorporates a cardboard/paperboard element, such as a paperboard tray or u-board that supports the bottoms of the containers.

Although a single layer of reinforcement is contemplated for the reinforced areas, it shall also be understood that the handle of the present invention may include additional layers as necessary to provide proper reinforcement for ensuring that the shrink-wrap material does not inadvertently tear or break when the consumer grasps the handle. The size of the reinforced areas as well as the size of the openings in the shrink-wrap material may be adjusted to best accommodate grasping by the consumer.

Although it is preferable to provide two handles at opposite ends of the package, the present invention also contemplates one or more than two handles located at various positions on the package.

In yet another embodiment of the present invention, the integral handle is created by use of a paperboard element that is preferably placed on the top edges of the containers, and the paperboard element has at least one opening formed therein. The shrink-wrap material covers the paperboard element. A perforation or slit is formed in the shrink-wrap material at the location of the opening in the paperboard element. The consumer places the fingers through the shrink-wrap material and through the opening in the paperboard element in order to carry the container.

Other features and advantages of the present invention will become apparent from a review of the following detailed description, taken in conjunction with the corresponding drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a perspective view illustrating an embodiment of the present invention incorporated in a 6-pack can package;

FIG. 1B illustrates the embodiment of FIG. 1A in a reverse perspective view;

FIG. 2 illustrates an embodiment of the present invention incorporated in a 12-pack can package, and wherein a paperboard/cardboard element is used for additional support;

FIG. 3 shows a 6-pack bottle package incorporating the handle of the present invention;

FIG. 4 illustrates a 12-pack bottle package with a paperboard/cardboard element incorporating the handle;

FIG. 5 is a perspective view of a sheet of shrink-wrap material used in a packaging operation;

FIG. 6 is another perspective view of the sheet of material showing the lateral edges being folded over thus creating the reinforced areas in accordance with one preferred embodiment;

FIG. 7 illustrates one step in a packaging operation wherein the shrink-wrap material is wrapped around the package; and

FIG. 8 illustrates another embodiment of the present invention incorporating a cardboard/paperboard element with the handle.

DETAILED DESCRIPTION OF THE INVENTION

FIGS. 1A and 1B illustrate a shrink-wrap packaging arrangement incorporating the reinforced integral handle of the present invention in a first embodiment. More specifically, these Figures illustrate a 6-pack arrangement of containers C, wherein the package 10 covers the containers, except for openings 20 formed at opposite ends of the package. Preferably, each of the opposite ends of the package includes a handle 14 including respective reinforced areas 15 having inner peripheral edges 16 and outer peripheral edges 18. Also, the reinforced areas 15 are preferably substantially round or oval in shape, and have a uniform width. The openings 20 are sized so that the fingers F of the hands H may be inserted therethrough for grasping the package. As also shown, the handles H have shading which distinguishes them from the remaining shrink-wrap material 12 which encloses the container C.

FIG. 2 illustrates another embodiment of the present invention wherein the package 10 is used to package a 12-pack arrangement of containers. In this embodiment, a u-board support 22 is provided which provides support to the bottom edges of the containers. The u-board includes a pair of side extensions 24 that extend upwards from the support a desired distance along opposite sides of the package. As with the first embodiment, the second embodiment also incorporates the handles 14 including openings 20 that are sized to receive the fingers of the hand. Depending upon the additional support required as provided by the u-board support 22, the most upper edge 25 of the side extensions 24 may intersect with the openings 20, or may only extend to a position below the openings 20. In both embodiments, the locations of the openings 20 are shown as being substantially centered on the opposite ends of the packaging. However, it shall be understood that the openings 20 may be modified in size and/or positioned at other locations on the ends of the package in order to best accommodate grasping based on the particular group of containers that are packaged. Furthermore, the thickness and construction of the reinforced area 15 may also be modified to accommodate the particular packaging arrangement. For packages including a greater number of containers, it may be necessary to provide extra reinforcement for the reinforced areas 15 by increasing the thickness of the reinforced areas, and/or by providing additional layers of material.

FIG. 3 illustrates another embodiment of the present invention that is used with a 6-pack bottle arrangement. As illustrated, the handles 14 in this embodiment are also preferably centered on the ends of the package, and positioned so that the fingers of the hands may be conveniently placed through the openings 20.

FIG. 4 illustrates yet another preferred embodiment of the present invention used with a 12-pack bottle arrangement. As with the previous embodiments, the handles 14 are preferably centered on the ends of the package, and while two handles placed at opposite ends of the package are shown, only one handle is required. As also shown in FIG. 4, the most upper edges 25 of the side extensions 24 in this embodiment do not intersect the openings 20.

Referring to FIG. 5, a roll of shrink-wrap material 30 is illustrated, the roll having opposite lateral edges 32, and respective designated fold or tear lines 34. Lines 34 simply represent areas on the shrink-wrap material 12 where the material will be manipulated to form the respective reinforced areas 15 of the handles 14.

Referring to FIG. 6, in a packaging operation, elements 36 generally represent a folding or a cutting and folding station wherein the lateral edges 32 are rotated inwards towards the central axis A-A of the sheet of material, and the resulting doubly reinforced areas represent the reinforced areas 15 that are incorporated in the handles 14. Depending upon the type of shrink-wrap material used, it may be advantageous to perforate or pre-fold the shrink-wrap material along the designated fold lines 34 in order to better facilitate creation of the reinforced areas.

It is also contemplated that the reinforced areas 15 of the handles 14 can be provided by applying separate strips of material on the lateral edges of the sheet of shrink-wrap material, and then attaching the separate strips as by adhesive, or by applying heat to the lateral edges thereby causing the shrink-wrap material to adhere to the strips of added material. The strips of material may comprise one or more than one layer of material depending upon the amount of reinforcement required in the package. Additionally, the strips of material may comprise shrink-wrap material, other thermoplastic material, paperboard or other paper products, or combinations thereof.

FIG. 7 generally illustrates another step in a packaging operation wherein the shrink-wrap material 12 has been wrapped around the group of containers C, yet the shrink-wrap material has not yet passed through a heat tunnel to form the final package including the preferably symmetrical, round/oval, and uniform handles formed at opposite sides of the package. In the packaging operation, it may be necessary to manipulate the shrink-wrap material at the ends where the handles are formed in order to ensure that the handles are correctly positioned and sized. For example, it may be necessary to perform one or more additional folding or heat-treating steps on the shrink-wrap material at the ends of the package in order to best preposition the reinforced areas prior to heat treatment in the heat tunnels. Accordingly, the reinforced areas 15 shown in FIG. 7 are not yet formed in their final shapes.

FIG. 8 illustrates yet another embodiment in the present invention wherein an additional handle 40 is formed on the upper edges of the containers. This additional handle 40 includes a fiberboard or paperboard element 41 that is placed on the upper surfaces of the container C. This element 41 extends across a majority of the length and width of the upper surfaces of the containers, but preferably does not extend beyond the upper peripheral edge of the package as defined by the exposed outside upper edges of the containers. A pair of openings 42 is formed in the element 41, and the openings are sized to receive the fingers of the hand. A pair of corresponding slits or perforations 44 is formed in the shrink-wrap material 12 over the openings 42. In use, the user places the fingers of the hand downward through one of the openings 42, and wraps the fingers around the central support 46 of the element 41 in order to carry the container. In a packaging operation, the element 41 is first placed upon the upper surfaces of the container prior to wrapping the shrink-wrap material.

FIG. 8 also illustrates the handles 14 formed on opposite ends of the package. It shall be understood that with respect to the embodiment of FIG. 8, the present invention contemplates either use of only the handle 40, or use of the handle 40 in combination with at least one handle 14. Also, it should be understood that the handle 40 could be incorporated within any of the other packaging arrangements shown in the prior figures.

In accordance with the method of the present invention, the method comprises providing a layer of film material, creating a reinforced area on at least one lateral edge of the film material, wrapping containers with the film material, and applying heat to the film material in order to shrink the film material around the containers, wherein a handle is formed by the reinforced area. Preferably, the reinforced area has a continuous arcuate shape, such as a circle or oval shape. The method also contemplates various ways in which to create reinforced area, one method being folding lateral edges of the film material, while another method contemplates applying respective separate pieces of material to the lateral edges of the film material. Additionally, the method contemplates applying appropriate shading to the film material in order to distinguish the handle area from other areas on the packaging.

There are many advantages to the shrink-wrap packaging incorporating the reinforced integral handle of the present invention. Shrink-wrap packaging provides an economical, yet reliable means for packaging containers. The integral handle provides a user with a convenient way to carry the package and without destroying the continuity of the package prior to opening the package. The integral handle may be placed at any convenient location along the package, and the size and construction of the handle may be easily modified to best accommodate the type of package being used.

While the present invention has been set forth above with respect to preferred embodiments in both an apparatus and method, it shall be understood that other changes and modifications can be made within the spirit and scope of the invention commensurate with the scope of the claims appended hereto.

Claims

1. A package comprising:

a film layer surrounding a plurality of containers therein, said film being heat treated to shrink said film around said containers;

at least one handle having an opening formed in said film layer, said handle further including a reinforced area formed by a second layer of material substantially surrounding said opening.

2. The package, as claimed in claim 1, wherein:

said at least one handle comprises two handles, said handles being formed at opposing sides of said beverage package.

3. The package, as claimed in claim 1, wherein:

said reinforced area has a shading that is different from a shading of said film layer surrounding the containers.

4. A package, as claimed in claim 1, wherein:

said opening is substantially round shaped.

5. A package, as claimed in claim 1, wherein:

said reinforced area has a substantially uniform width and is substantially ring shaped.

6. A package, as claimed in claim 1, wherein:

said reinforced area is formed by folding an edge of said film layer and securing the folded edge to said film layer.

7. A package, as claimed in claim 1, wherein:

said reinforced area is formed by applying said second layer of material on an edge of said film layer.

8. A package, as claimed in claim 7, wherein:

said second layer of material comprises a film material.

9. A package, as claimed in claim 7, wherein:

said second layer of material is a separate piece of material.

10. A package, as claimed in claim 7, wherein:

said second layer of material is a different material than said film layer.

11. A package, as claimed in claim 1, wherein:

said film layer comprises polyethylene film.

12. A package, as claimed in claim 3, wherein:

said shading is formed by printing a shading on said reinforced area.

13. A package comprising:

a film layer surrounding a plurality of containers therein, said film being heat treated to shrink said film around said containers;

at least one means for gripping said package having an opening formed in said film layer, said means for gripping including a reinforced area formed by a second layer of material substantially surrounding said opening.

14. The package, as claimed in claim 13, wherein:

said at least one means for gripping said package comprises two means for gripping said package that are formed at opposing sides of said beverage package.

15. The package, as claimed in claim 13, wherein:

said reinforced area has a shading that is different from a shading of said film layer surrounding the containers.

16. A package, as claimed in claim 13, wherein:

said opening is substantially round shaped.

17. A package, as claimed in claim 13, wherein:

said reinforced area has a substantially uniform width and is substantially ring shaped.

18. A package, as claimed in claim 13, wherein:

said reinforced area is formed by folding an edge of said film layer and securing the folded edge to said film layer.

19. A package, as claimed in claim 13, wherein:

said reinforced area is formed by applying said second layer of material on an edge of said film layer.

20. A package, as claimed in claim 19, wherein:

said second layer of material comprises a film material.

21. A package, as claimed in claim 19, wherein:

said second layer of material is a different material than said film layer.

22. A package, as claimed in claim 13, wherein:

said film layer comprises polyethylene film.

23. A package, as claimed in claim 15, wherein:

said shading is formed by printing on said reinforced area.

24. A method of packaging a plurality of containers, said method comprising the step of:

providing a layer of film material;

creating a reinforced area on at least one lateral edge of said film material;

wrapping said containers with said film material; and

applying heat to said film material to shrink said film material around said containers, wherein a handle is formed by said reinforced area, said reinforced area having a continuous arcuate shape and having an opening.

25. A method, as claimed in claim 24, wherein:

said creating step includes folding said at least one edge of said film material and securing the folded edge to said film material resulting in a double layer of said film material extending along said lateral edge.

26. A method, as claimed in claim 24, further including the step of:

applying a shading to said film material.

27. A method, as claimed in claim 26, wherein:

said shading is applied at the location of the reinforced area.

28. A method, as claimed in claim 26, wherein:

said shading is applied adjacent the reinforced area.

29. A method, as claimed in claim 24, wherein:

said creating step includes applying a second layer of material on said at least one lateral edge of said film material.

30. A method, as claimed in claim 25, wherein:

said double layer of said film material is secured by adhesive.

31. A method, as claimed in claim 25, wherein:

said double layer of said film material is secured by applying heat to said double layer.

32. A package comprising:

a film layer surrounding a plurality of containers therein, said film being heat treated to shrink said film around said container;

a reinforced area formed on said film layer, said reinforced area including an additional layer of said film layer, said reinforced area substantially surrounding an opening in said film layer; and

a shading applied to said reinforced area to distinguish said reinforced area from said film layer.

33. A package, as claimed in claim 32, wherein:

said opening is substantially round shaped.

34. A package, as claimed in claim 32, wherein:

said reinforced area has a substantially uniform width and is substantially ring shaped.

35. A package, as claimed in claim 32, wherein:

said reinforced area is formed by folding an edge of said film layer and securing the folded edge to said film layer.

36. A package, as claimed in claim 32, wherein:

said reinforced area is formed by applying a second layer of said film on an edge of said film layer.

37. A package, as claimed in claim 32, wherein:

said film layer comprises polyethylene film.

38. A package, as claimed in claim 32, wherein:

said shading is formed by printing on said reinforced area.