US3650391A

US3650391A - Composite package and method of forming same

Info

Publication number: US3650391A
Application number: US63819A
Authority: US
Inventors: Yun Hoon Chung
Original assignee: INT AUTOMATED MACHINES Inc
Current assignee: INTERNATIONAL AUTOMATED MACHINES Inc; INT AUTOMATED MACHINES Inc
Priority date: 1970-08-14
Filing date: 1970-08-14
Publication date: 1972-03-21
Anticipated expiration: 1989-03-21

Abstract

A composite package having three separably connected containers. The containers are initially formed integrally as receptacles in a base sheet of a self-supporting plastic material, each receptacle being open at its upper end and closed at the bottom. A cover sheet is bonded to the upper face of the base sheet to overlie the open ends of the receptacles. The cover sheet is formed with small product dispensing apertures which register with the open ends of the receptacles. A peelable top sheet is applied over the cover sheet to cover the dispensing openings. The three sheets are severed in a predetermined manner and along predetermined lines between the receptacles to facilitate separation of the containers from one another and to provide lift tabs facilitating peeling of the top sheet from the cover sheet when it is desired to dispense the product. The receptacles are filled with product through the open upper ends thereof before the cover sheet is applied thereto.

Description

United States Patent Chung [451 Mar. 21, 1972 COMPOSITE PACKAGE AND METHOD OF FORMING SAME Yun Hoon Chung, Perrysburg, Ohio International Automated Machines, Inc., Perrysburg, Ohio Filed: Aug. 14, 1970 Appl. No.: 63,819

Inventor:

Assignee:

References Cited UNITED STATES PATENTS Primary ExaminerWilliam T. Dixson, .Ir. Assistant Examiner-Steven E. Lipman Attorney-Bames, Kisselle, Raisch & Cheats [57] ABSTRACT A composite package having three separably connected containers. The containers are initially formed integrally as receptacles ina base sheet of a self-supporting plastic material, each receptacle being open at its upper end and closed at the bottom. A cover sheet is bonded to the upper face of the base sheet to overlie the open ends of the receptacles. The cover sheet is formed with small product dispensing apertures which register with the open ends of the receptacles A peelable top sheet is applied over the cover sheet to cover the dispensing openings. The three sheets are severed in a predetermined manner and along predetermined lines between the receptacles to facilitate separation of the containers from one another and to provide lift tabs facilitating peeling of the top sheet from the cover sheet when it is desired to dispense the product. The receptacles are filled with product through the open upper ends thereof before the cover sheet is applied thereto.

7 Claims, 9 Drawing Figures Patented March 21, 1912 3,650,391

FIG. 1 FIG. 5 T 6 INVENTOR YUN HOON CHUNG ATTORNEYS COMPOSITE PACKAGE AND METHOD OF FORMING SAME This invention relates to packages, particularly composite packages, which comprise a plurality of separable containers from which product is adapted to be dispensed (such as salt, pepper, sugar, ketchup, etc.) and to the method of forming such packages.

More specifically, the invention encompasses a simple and inexpensive composite package consisting of several separably connected receptacles filled with food or other products which may be related in use or for some other reason..(Related food products, for example, such as salt, ketchup and pepper; sugar, cream and sugar substitute; etc.) Composite packages of this type are admirably suited for institutional use such as in hospitals or on airlines or in cafeterias where packages of such related food products are frequently served.

It is an object of this invention to provide a composite package which is of simple and attractive design, which can be manufactured economically, and which is constructed so that from the functional standpoint the containers can be separated from one another and the product dispensed therefrom very conveniently.

A further object of this invention resides in the provision of a method of forming such composite packages which lends itself to low cost, high speed production. Other features and objects of the present invention will become apparent from the following description and drawings, in which:

FIG. 1 is a plan view showing the progressive steps employed in forming the composite package of the present invention.

FIG. 2 is a plan view of the completely formed package.

FIG. 3 is a plan view of one of the receptacles of the composite package separated from the remaining receptacles.

FIG. 3A is a perspective view showing the manner in which the top sheet on one of the containers is removed for dispensing product.

FIG. 4 is a view similar to FIG. 3 and showing the container in condition ready for dispensing the product.

FIG. 5 is a plan view of another of the containers shown in FIG. 2 separated from the other containers.

FIG. 6 is a view similar to FIG. 5 and showing the top sheet removed from the container so as to expose the dispensing opening.

FIG. 7 is a sectional view along line VII-VII in FIG. 2.

FIG. 8 is a view similar to FIG. 1 and showing a modified form of package and the method of making the same.

Referring to FIGS. 1 through 7, the composite package of the present invention, generally designated 10, and the method of forming such package are illustrated. Package 10, generally speaking, comprises three individual containers such as two generally cylindrical salt and pepper shakers 12 and 14 and a container 16 for sugar, ketchup, etc. Containers 12 and 14 are of the same shape and include a cylindrical side wall 18,

a bottom wall 20 and an outwardly extending peripheral lip 22 around the upper open end thereof. Container 16 is likewise provided with a side wall 24 which is generally trough shaped at one end thereof as at 26, a bottom wall 28 and a peripheral lip 30 around the upper open end thereof.

The manner in which the composite package is formed is generally illustrated in FIG. 1 which shows the progressive steps in the formation of the package. Initially a base sheet of plastic material 32 of suitable width and of continuous strip form is formed with cavities or

pockets

34, 36 and 38. These pockets eventually form the receptacles of

containers

12, 14 and 16, respectively. Base sheet 32 is formed of a self-supporting plastic material and

pockets

34,36,38 are preferably formed therein by any suitable means such as a vacuum forming process. The pockets are formed in base sheet 32 in groups of three as illustrated and each group of pockets is spaced from the adjacent group of pockets in a predetermined manner as illustrated in FIG. 1.

After the pockets are formed in base sheet 32 the sheet is advanced to a first station designated A in FIG. 1 where each of the pockets or receptacles is filled with a selected product through its open upper end. For example, receptacle 34 may be filled with salt, receptacle 36 filled with pepper and receptacle 38 filled with sugar, mustard, ketchup, etc.

Base sheet 32 is then advanced to a successive station B where a cover sheet 40 is applied over and bonded to base sheet 32. Cover sheet 40 may be in the form of a thin plastic film or other scalable flexible sheet material such as a plasticcoated paper and is permanently bonded to base sheet 32 at the lip portions around the open upper ends of

receptacles

34,36,38. Cover sheet'40 is formed with a plurality of successive openings 42 therein which are spaced apart lengthwise of sheet 40 so as to register with the trough-shaped end wall portion 26 of each receptacle 38. Cover sheet 40 is also provided with two groups of small apertures 44 which register with the upper open ends of

receptacles

34 and 36.

After cover sheet 40 is bonded to base sheet 32 as indicated at station B in FIG. 1, the bonded sheets are advanced to suecessive station C wherein both sheets are punched to form an aperture 46 slightly forwardly of aperture 42. At the same time both

sheets

32 and 40 are die cut along the lines indicated at 48,50. Slit 48 is spaced between receptacle 34 and receptacle 38 and slit 50 is located between receptacle 36 and receptacle 38. 1

After the die cutting operation illustrated at station C in FIG. 1 the composite sheet is advanced to a successive station D where a top sheet 52 is applied to cover sheet 40 and is bonded thereto. Top sheet 52 can be in the form of a thin pressure'sensitive adhesive strip of paper, foil or plastic film, depending primarily upon the products being packaged and the manufacturers preference. Top sheet 52 is bonded to cover sheet 40 so as to be readily peelable therefrom. Depending on the materials used for

sheets

40,52, the bond may be effected either by a pressure sensitive adhesive, by means of a heat sealing operation or by any other suitable bonding operation. The use of a pressure sensitive adhesive is preferred to obtain a peelable bond. As shown at station D, top sheet 52 overlies the entire cover sheet 40 and thus closes

openings

42, 44 and 46. After top sheet 52 is bonded to cover sheet 40, all three sheets are die out along the lines designated 54, 56. It will be observed that lines 54,56 are located to form extensions of the

die cut lines

48 and 50. If it is desired, the adjacent ends of

lines

48 and 54 and the adjacent ends of lines 50 and 56 may be spaced apart slightly. The other ends of lines 54,56 extend slightly beyond the edge of aperture 46 formed in cover sheet 40 and base sheet 32.

The final step in-the formation of the composite package is shown at the next successive station E in FIG. 1. At station E all three sheets are die cut to provide the desired outline configuration of the composite package. The die cut which forms the outer peripheral edge of the composite package is designated 58. It will be noted that around the three straight sides of receptacle 38 the peripheral edge of the package is spaced slightly outwardly beyond the side walls of receptacle 38. The peripheral edge then curves around each of receptacles 34 and then straight across the opposite end of the composite package. The latter straight edge, designated 60, extends generally diametrically across aperture 46 in base sheet 32 and cover sheet 40.

As is indicated in FIG. 2, the slits designated by lines 54,56 terminate at their opposite ends inwardly of the peripheral edges of the package. Thus, even though the slits 54,56 extend through all three sheets, the three

containers

12, 14 and 16 are connected by the portions of the top sheet 52 which overlie the

slits

48,50 at one end of the slits 54,56 and by the unsevered portions of the top sheet overlying aperture 46. While these slits can be formed as shown in FIG. 2, if desired, each slit 48,54 and 50,56 can be other than straight and thus further reduce the tendency to produce a hinge action of the containers along these slits as axes.

It is contemplated that the user will receive composite package 10 in the form illustrated in FIG. 2 and that he will be able to selectively dispense the contents of each of the

containers

12, 14,16. The three containers can be separated from These tabs comprise the portions of tab 58 of topsheet 52 which overlies aperture 46.

When it is desired to dispense the contents of containers 12 or 14 top sheet 52 is peeled therefrom by simply pulling upwardly on lift tab 61 so as to expose dispensing openings 44. The portion of cover sheet 52 oncontainer 16 may be peeled therefrom by pulling upwardly on tab 62 to thus expose dispensing opening 42.

The arrangement shown in FIG. 8 is substantially identical to that previously described except, however, that tip sheet (designated 64) completely overlies

receptacles

34 and 36 but only partially overlies receptacle 38, namely, that portion of the latter provided with the dispensing opening 42. Thus, at station D top sheet 64 is applied to only the upper portion of the composite package, that is, that portion which contains all three dispensing openings. Top sheet 64 is preferably in the form of strips of sheet material having pressure sensitive adhesive applied to the under face thereof. These strips may have a length slightly less than the width of base sheet 32 so that the opposite ends thereof are spaced slightly inwardly of the side edges of the base sheet. ln other respects the composite package shown in FIG. 8 and its method of formation is the same as the embodiment previously described. In each instance the composite package can be separated into individual containers which are at least of semi-rigid construction.

I claim:

1. A composite package having a plurality of separably connected containers comprising a self-supporting base sheet having a pair of spaced apart receptacles therein which are closed at the bottom and open at the top, each receptacle having a generally flat peripheral lip portion extending around its upper end, a cover sheet overlying said base sheet and bonded to said lip portions around the periphery of each receptacle, said cover sheet having a dispensing opening therein overlying the open upper end of one of said receptacles, said dispensing opening being substantially smaller in size than the open end of the receptacle which it overlies to permit controlled discharge of the contents of saidone receptacle when the latter is inverted, a top sheet overlying that portion of the cover sheet which contains said discharge opening and also overlying the portion of the cover sheet extending between the two receptacles, said top sheet being bonded to the cover sheet so as to be readily peelable therefrom, said base, cover and top sheets being severed along registering lines extending between said receptacles, said registering lines terminating at opposite ends thereof slightly inwardly of edge portions of the package so as to retain the containers in a separably connected condition.

2. A composite package as called for in claim 1 wherein one of said edge portions of the package is defined by a laterally inwardly extending recess in the free edge of the base sheet and cover sheet, said top sheet overlying said recess, said registering lines extending into said recess at one end whereby when the receptacles are separated the portions of the top sheet overlying the recess provide pull tabs for facilitating peeling the top sheet from the cover sheet on each receptacle.

3. A composite package as called for in claim 1 wherein said cover and base sheets are severed along registering lines which extend from a point adjacent but spaced from one end of the first-mentioned registering lines of severing to at least closely adjacent one of said edge portions, the portion of the top sheet overlying the second-mentioned lines of severing being imperforate.

4. A composite package as called for in claim 3 wherein the first-mentioned registering lines of severing are substantially longer than the second-mentioned registering lines of severmg.

5. A composite package as called for in claim 1 wherein the top sheet overlies the cover sheet substantially completely.

6. A composite package as called for in claim 1 wherein the cover sheet has a dispensing opening therein which registers with the other receptacle and which is substantially smaller in size than the open end of said other receptacle.

7. A composite package as called for in claim 6 wherein the second-mentioned dispensing opening is located at a portion of said other receptacle which is adjacent said one receptacle, said top sheet overlying the second dispensing opening and only partially overlying said other receptacle.

Claims

1. A composite package having a plurality of separably connected containers comprising a self-supporting base sheet having a pair of spaced apart receptacles therein which are closed at the bottom and open at the top, each receptacle having a generally flat peripheral lip portion extending around its upper end, a cover sheet overlying said base sheet and bonded to said lip portions around the periphery of each receptacle, said cover sheet having a dispensing opening therein overlying the open upper end of one of said receptacles, said dispensing opening being substantially smaller in size than the open end of the receptacle which it overlies to permit controlled discharge of the contents of said one receptacle when the latter is inverted, a top sheet overlying that portion of the cover sheet which contains said discharge opening and also overlying the portion of the cover sheet extending between the two receptacles, said top sheet being bonded to the cover sheet so as to be readily peelable therefrom, said base, cover and top sheets being severed along registering lines extending between said receptacles, said registering lines terminating at opposite ends thereof slightly inwardly of edge portions of the package so as to retain the containers in a separably connected condition.

4. A composite package as called for in claim 3 wherein the first-mentioned registering lines of severing are substantially longer than the second-mentioned registering lines of severing.