WO1999035039A1

WO1999035039A1 - Overwrap traypack

Info

Publication number: WO1999035039A1
Application number: PCT/US1998/023919
Authority: WO
Inventors: Stephen Carl Lermer; David Lindsay Gitter
Original assignee: Warner-Lambert Company
Priority date: 1998-01-05
Filing date: 1998-11-10
Publication date: 1999-07-15
Also published as: CA2305175A1; JP2002500135A; BR9813123A; EP1047603A1; AU1393099A

Abstract

The present invention is directed to a combination overwrap and display tray for holding a plurality of packages for shipping and display. The present invention employs a polypropylene overwrap having a tear-off strip which encircles the overwrap. The overwrap is utilized to group the plurality of packages during shipping and for display purposes and the tear-off strip is used to remove a portion of the overwrap, thus exposing the individual packages at the retail location. The remaining portion of the overwrap may be utilized as a tray for retail sale and no separate tray is required. Instructions for use of the overwrap and display tray may be pre-printed on the wrap or the tear-off strip.

Description

OVERWRAP TRAYPACK

Background of the Invention

1. Field of the Invention

This invention relates to overwraps which are utilized to surround and hold a

plurality of packages for shipment and also, if desired, for retail display while

minimizing the amount of waste packaging material.

2. Description of Related Art

For many years efforts have been ongoing to optimize wrapping and display

materials for packages, such as small boxes, cassettes, etc., which are grouped together

for shipping and display but intended to be sold separately through retail outlets. The

efforts have been focused on both the shipping aspect, where durability and strength are

important, and the display aspect, where visibility and stability are important. The

common resulting situation is that separate materials are often used for wrapping the

items during shipping and for displaying the items at a retail level. For example, a plastic

film overwrap may be utilized to wrap the items during shipping and then removed in

favor of a separate cardboard or other hard display tray which is used to display the items.

The result of this common situation is that an excessive amount of material is utilized and

retailers who do not wish to use the provided display are faced with the necessity of

disposal of the bulky display tray, as well as the overwrap material, without receiving any

benefit from the tray. Not only is this an inconvenience for the retailer and a waste of

material, but it also raises environmental concerns; as the world's landfills are becoming ever more full the public is becoming ever more conscious of attempting to reduce waste

materials.

Generally, existing package overwraps are not sufficient, by themselves,

for use in retail product displays. Among the problems with the use of overwraps for

display are that once overwraps are opened they do not provide the support, stability

and/or visibility required for display purposes. Further, one of the most common

methods of overwrapping, heat-shrinking, does not address the shipping/display issue.

For example, U.S. Patent No. 5,048,687, issued to Suzuki et al. discloses a unit

containing a number of packages wherein the packages are wrapped in a tubular outer

wrap. The outer wrap consists of a flexible plastic film having top and bottom portions

which are heat-shrinkable such that the inner packages are tightly bound together when

the film is heat shrunk. Likewise, U.S. Patent No. 5,097,955, issued to Kluter et al. and

U.S. Patent No. 5,067,612, issued to Tsuchiya et al. both also disclose units wherein the

packages are ultimately bound together via shrink wrapping. The shrink wrapping

process of these references produces a tight, strong package for shipping, however the

shrink wrap material is not capable of being utilized for display purposes and

consequently a separate display must be provided.

It would be advantageous to provide a combination display tray and overwrap

which would provide the properties sufficient to allow shipping of the package as well

as proper retail display. It would be further advantageous if the overwrap and tray

reduced or eliminated the need to discard bulky unwanted or depleted trays. Summary of the Invention

The present invention is directed to a combination overwrap and display tray for

holding a plurality of packages for shipping and display. The present invention employs

a polypropylene overwrap having a tear off means which encircles the overwrap. The

overwrap is utilized to group the plurality of packages during shipping and for display

purposes and the tear off means is used to remove a designated portion of the overwrap,

thus exposing the individual packages at the retail location. The remaining portion of the

overwrap may be utilized as a tray for retail sale and no separate tray is required.

Brief Description of the Drawings

Figure 1 is a perspective view of a plurality of packages entirely enclosed by the

overwrap of the present invention.

Figure 2 is a perspective view of a plurality of packages entirely enclosed by the

overwrap of the present invention with the tear strip removed.

Figure 3 is a perspective view of a plurality of packages partially enclosed by the

overwrap of the present invention.

Figure 4 is a perspective view of a plurality of packages with the top portion of the

overwrap being removed. Figure 5 is a perspective view of the present invention as on retail display with

two of the plurality of packages removed.

Detailed Description of the Present Invention

Reference will now be made to the presently preferred embodiments of the present

invention. As illustrated in Figures 1 and 2, the present invention discloses a plurality of

inner packages 1 1 which are held together via an outer overwrap 10. The overwrap

completely encloses the plurality of packages and holds them all tightly together such that

the packages may be shipped or otherwise handled as a single unit. Preferred materials

for theoverwrap are non-heat shrinkable materials including polypropylene, oriented

polypropylene and foamed polypropylene. These materials are preferred due to their

inherent stiffness and propensity to tear as desired. A means for separating one or more

portions of the overwrap, and preferably the top portion of the overwrap from the bottom

portion of the overwrap, is also provided. Preferably the means is in the form of tear strip

15 which encircles the wrapper and is heat-bonded to the wrapper, however the

polypropylene is preferably also be scored, perforated or otherwise adapted to facilitate

straight, clean tearing. Most preferably, the tear strip is placed over perforations 16 in the

overwrap. Any desired number of tear strips may be employed. The tear strip is

preferably located in a position such that when it is removed it pulls and removes the top

portion of the overwrap, thus exposing the tops of the individual packages. At the same

time, the bottom portion of the overwrap remains in place and holds the plurality of inner

packages in place. The most preferable location for the tear strip is approximately at the

midpoint of the sides of the packages. The width of the tear strip may be variable and, in addition, pre-printed opening instructions, such as "pull up and around to open" may be

printed on the strip.

As shown in Figures 3 and 4, the removal of the tear strip will result in the removal

of the top portion IOC of the overwrap resulting in open area 10A which exposes the tops

of the individual packages. The bottom portion of the overwrap remains in place over the

bottom portions of the plurality of packages and acts as a tray 10B for holding the packages

in place. In this position, the packages may be neatly and securely displayed in a manner

such that the retail customer may easily remove one or more of the packages for purchase.

The consistency of tray 1 OB is such that one or more packages may be easily removed

from the tray. As illustrated in Figure 5, opening 11A created by the removal of one or

more packages does not damage the integrity of tray 10B. The tray portion 10B of the

overwrap retains sufficient strength to hold any number of remaining packages in place

upon the removal of one or more packages. In the event that the retailer does not desire to

utilize the bottom portion of the overwrap as a tray, then only the small amount of

polypropylene material which constitutes the bottom of the overwrap must be discarded.

In any event, following the depletion of the packages only a small amount of waste

material must be discarded. This is in stark contrast to currently available overwrap

systems which require a separate, bulky tray portion which creates a large amount of waste

when discarded.

The overwrap itself comprises a six-sided wrap such that all six sides of the

plurality of packages are covered. The wrapping is formed around the plurality of inner

packages and then sealed on both its top and the bottom ends so that the sealing portion does not interfere with the tear off strip or strips. The wrapping process may take place

on virtually any standard wrapping machine. Preferably, the wrapping is done with the

grain of the polypropylene, i.e., the grain is in the same direction as the tear strip, in order

to enhance the tearing of the wrapping. Following the wrapping process, the

polypropylene is heat sealed to itself on both the top and bottom of the package to

produce a tightly wrapped package. The wrapping is not amenable to or subjected to a

heat-shrinking step. In a preferred embodiment, the wrapping contains pre-printed

graphics, most preferably on the bottom portion of the overwrap, in the form of

instructions which instruct the shelf stacker to remove the top portion of the overwrap

and to leave the bottom portion of the overwrap on the packages for use as a tray. The

final step is the addition of a tear-off strip and preferably perforations or other means to

allow the top portion of the package to be neatly separated from the bottom portion. The

tear-off strip may be heat sealed or otherwise affixed to the package.

While there have been described what are presently believed to be the preferred

embodiments of the present invention, those skilled in the art will realize that various

changes and modifications may be made to the invention without departing from the

spirit of the invention, and it is intended to claim all such changes and modifications as

fall within the scope of the invention.

Claims

We claim:

1. A package comprising:

a plurality of inner packages; and

an outer overwrap having at least two distinct and separate portions;

wherein the overwrap comprises at least one means for separating the at least two

separate portions of the overwrap and wherein at least one of the two distinct and separate

portions is capable of forming a tray for holding the inner packages.

2. A package according to claim 1 , wherein the overwrap comprises polypropylene,

oriented polypropylene or foamed polypropylene.

3. A package according to claim 2, wherein the overwrap is comprised of polypropylene.

4. A package according to claim 2, wherein the at least two distinct and separate portions

of the overwrap comprise a top portion and a bottom portion separated by a means for

separating the top portion from the bottom portion.

5. A package according to claim 4, wherein the means for separating the top portion from

the bottom portion comprises a tear-off strip.

6. A package according to claim 5, wherein the overwrap is scored or perforated.

7. A package according to claim 6, wherein the overwrap is scored or perforated under the

tear-off strip.

8. A package according to claim 5, wherein the bottom portion of the package comprises

a tray sufficient for holding one or more of the plurality of inner packages.

9. A package according to claim 5 wherein the overwrap and/or the tear-off strip contain

graphics.

10. A package according to claim 9, wherein the graphics on the overwrap and/or the tear-

off strip comprise instructions for removal of the top portion of the overwrap and the use of

the bottom portion of the overwrap as a tray.

1 1. A method of providing an outer overwrap and a tray for a plurality of packages

comprising the steps of:

a) wrapping a plurality of inner packages with an outer overwrap comprised of

non-heat shrinkable polypropylene, oriented polypropylene or foamed polypropylene; and

b) affixing a means for separating the outer overwrap into two or more portions

with one of the portions of the overwrap comprising a tray.

12. A method according to claim 11, comprising the additional step of scoring or

perforating the outer overwrap.

13. A method according to claim 12, comprising the additional step of printing graphics on

the outer overwrap.

14. A method of providing a tray for a plurality of inner packages, with each inner

package having a top portion and a bottom portion comprising the steps of:

a) wrapping a plurality of inner packages with an outer overwrap comprised of

non-heat shrinkable polypropylene, oriented polypropylene or foamed polypropylene,

b) affixing a tear-off strip to the outer overwrap to separate the outer overwrap

into distinct top and tray portions; and

c) removing the tear-off strip in a manner such that the top portions of the inner

packages are exposed and the bottom portions of the inner packages remain within the

tray portion of the outer overwrap.

15. A method according to claim 14, comprising the additional step of scoring or

perforating the outer overwrap.

16. A method according to claim 15, comprising the additional step of printing graphics on

the outer overwrap.