U.S. patent number 3,601,253 [Application Number 04/831,013] was granted by the patent office on 1971-08-24 for container-packaging device and method.
This patent grant is currently assigned to Illinois Tool Works Inc.. Invention is credited to Ougljesa Jules Poupitch.
United States Patent |
3,601,253 |
Poupitch |
August 24, 1971 |
CONTAINER-PACKAGING DEVICE AND METHOD
Abstract
This invention relates generally to means and methods for
packaging containers, and more particularly to means and methods
for packaging a plurality of containers having a circumferential
shoulder or bead at the upper end thereof, as for example capped
jars and conventional beaded cans. The embodiments of the invention
disclosed in the present application include paperboard sheet
material having container-accommodating apertures, the upper
surfaces of such sheet material being treated as by spraying to
condition said surface for subsequent attachment thereof to a
flexible, elastic, plastic film or membrane. By subjecting the
adjacently positioned film and previously treated paperboard to
heat, these parts become firmly adhered to each other. The marginal
edges defining each of the apertures in the paperboard underlie the
shoulder of a bead or jar cap of a complementary container. The
elastic film encapsulates the upper extremity of the container and
thus the film serves both as a protective coating for the end
surface of the container as well as means for maintaining the
marginal edge of the paperboard or fiberboard in underlying contact
with respect to the shoulder of an associated container.
Inventors: |
Poupitch; Ougljesa Jules (N/A,
IL) |
Assignee: |
Inc.; Illinois Tool Works
(IL)
|
Family
ID: |
25258100 |
Appl.
No.: |
04/831,013 |
Filed: |
June 6, 1969 |
Current U.S.
Class: |
206/153; 206/197;
206/158; 294/87.2 |
Current CPC
Class: |
B65D
71/403 (20130101); B65B 17/025 (20130101) |
Current International
Class: |
B65B
17/02 (20060101); B65B 17/00 (20060101); B65D
071/00 (); B65D 085/62 () |
Field of
Search: |
;206/65C,65E,65S,45.33
;215/100,95 ;294/87.2,87.26 ;229/29F |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Dixson; William T.
Claims
The invention is claimed as follows:
1. A packaging device for containers having a circumferential
shoulder in the vicinity of the upper extremity thereof including
paperboard sheet means in the form of elongate strips having
adjacent margins and having pairs of opposed apertures formed along
said margins, which apertures, when the margins of the strips are
brought into adjacent relationship provide a plurality of container
accommodating apertures having a diameter less than the diameter of
the outer diameter of the upper extremity of a container to be
accommodated thereby, and a plastic sheet adjacently superimposing
the top surface and sidewalls of the upper extremity of the
container and adhered to the upper surface of the paperboard so as
to maintain the circumferential marginal area of the paperboard
which defines said apertures in underlying relation with respect to
the circumferential shoulder of the container.
2. A packaging device as set forth in claim 1 wherein the facing
edges of the paperboard strips are adapted for abutment with each
other when the circumferential marginal area defining the apertures
are in underlying relation with respect to the circumferential
shoulder of an associated container.
3. A packaging device as set forth in claim 1 wherein the facing
portions of the strip are adapted to overlap when the
circumferential marginal area of the paperboard underlies the
circumferential shoulder of an associated container.
4. A packaging device as set forth in claim 1 wherein the facing
margins of the paperboard strips are adapted to be secured together
when the circumferential marginal areas defining the apertures are
in underlying relation with respect to the circumferential shoulder
of an associated container.
5. A packaging device for containers as set forth in claim 1
wherein means in the form of scored areas are provided between the
container accommodating apertures to facilitate separation of one
packaged container from an adjoining packaged container.
6. A packaging device for containers as set forth in claim 1
wherein the paperboard strips are provided with lateral flanges to
lend lateral strength to the paperboard stock.
7. A packaging device for accommodating containers as set forth in
claim 1 wherein the paperboard strips are provided with flanges
extending downwardly with respect to an associated container.
8. A packaging device for containers as set forth in claim 1
wherein flanges extending upwardly from the paperboard strips are
provided to lend lateral strength thereto.
9. A packaging device for containers as set forth in claim 1
wherein the film sheet extends beneath the paperboard strips and
the opposite margins thereof extend over the sidewalls and upper
surface of the container, said opposite margins of the plastic film
being sealed adjacent the upper surface of an associated
container.
10. A packaging device for containers as set forth in claim 1
wherein the paperboard sheet includes sections for extending along
the side and bottom of an associated container.
11. A packaging device for containers as set forth in claim 1
wherein the paperboard material includes side sections through
which a portion of the periphery of associated containers may
project.
Description
It is recognized that paperboard, sometimes referred to as
fiberboard, is capable of withstanding forces resulting from the
weight of beverage containers and the like. However, fiberboard
does lack one very basic and desirable characteristic and that is
sufficient resiliency to resist deformation. In other words,
material such as cardboard and the like may be deformed readily but
once deformed it lacks the inherent capability or tendency to
return its original undeformed state.
It is an object, therefore, of the present invention to render
possible the use of paperboard or cardboard as a packaging element
for containers by combining therewith material which will provide
the desired degree of inherent resilient yieldability to resist
deformation forces.
Another object of the present invention is provide a packaging
device for containers as set forth above which is readily
disposable by combustion.
The present invention also contemplates a new and improved method
of assembling paperboard and plastic sheet material with the tops
of containers such as cans, jars and the like, which containers
incorporate shoulder means for interlocking with axially deflected
marginal areas of such sheet material.
The following and other objects and advantages of the invention
will be more apparent from the accompanying drawings, wherein:
FIG. 1 is a fragmentary perspective view of a strip of sheet
material apertured to accommodate a complementary circumferentially
shouldered container, the fingers or prongs surrounding each
aperture being sprayed with plastic material so as to provide a
flexible bond for the upper surface of the radially slit margin and
a plastic coating for the free edge thereof;
FIG. 2 is a fragmentary perspective view showing the paperboard
sheet of FIG. 1 in association with a plastic film or membrane
positioned thereabove and about to be applied to the
paperboard;
FIG. 3 is a fragmentary plan view of the packaging device or
carrier as seen from above FIG. 2;
FIG. 4 is an enlarged fragmentary perspective view showing a
section of the paperboard and film applied thereto, with the
container engaging fingers shown in their axially deflected
position;
FIG. 5 is a diagrammatic illustration of the combined film and
paperboard in association with a heating element positioned
thereabove, and a mandrel positioned therebeneath in readiness to
engage the underside of the heated film sheet or membrane;
FIG. 6 is a diagrammatic view similar to FIG. 5 showing the mandrel
after it has engaged the sheet of film so as to form an inverted
cup for accommodating the upper extremity of a container as for
example the disclosed baby food jar;
FIG. 7 is a view similar to FIG. 6 showing a modified marginal
undulated area surrounding the container accommodating aperture,
this undulated area serving to facilitate subsequent axial
deflection of the paperboard into the inverted cup of the film;
FIG. 8 discloses a baby food jar after it has been moved into
telescopic association with a companion aperture in the paperboard
sheet, with the circumferentially distributed fingers or prongs
shown in interlocking engagement with the shoulder provided by the
underside of the cap of the jar;
FIG. 9 is an enlarged fragmentary sectional view of the left
portion of the structure shown in FIG. 8, more clearly to
illustrate the manner in which the sheet of plastic film material
functions to maintain the fingers or prongs in operative
interlocking association with the underside of the jar cap;
FIG. 10 is a fragmentary perspective view of a paperboard strip of
modified form, said strip being formed of two complementary
apertured sections adapted to be moved into locking association
with the undersides of a series of capped jars;
FIG. 11 is a perspective view showing the paperboard of FIG. 10
moved into operative association with the underside of a plurality
of jar caps;
FIG. 12 is a sectional view taken substantially along the line
12--12 of FIG. 11, showing the film sheet positioned above the jar
in readiness to encapsulate the jar cover or cap;
FIG. 13 discloses diagrammatically the application of heat to the
film, thereby facilitating the stretching of the film over a jar
cap;
FIG. 14 is a view similar to FIG. 13 showing in elevation the film
applied to the container cap thereby maintaining the
circumferential marginal areas of the paperboard in underlying
relation with respect to the shoulder provided by the cap;
FIG. 15 is a fragmentary plan view of a modified paperboard
somewhat similar to the paperboard shown in FIGS. 10-14 inclusive,
with the adjacent portions of the paperboard stock being elongated
so as to require overlapping thereof in forming a circular opening
or pocket for a container;
FIG. 16 is a plan view of a pair of containers secured from beneath
the covers or caps thereof by the paperboard of FIG. 15;
FIG. 17 is a sectional view taken substantially along the line
17--17 of FIG. 16, more clearly to illustrate the overlapped
sections of the paperboard stock stapled together;
FIG. 18 is a plan view showing a strip of jars supported by the
combined plastic film and paperboard stock, said view showing
transverse score lines to facilitate individual separation of one
or more package containers;
FIG. 19 is a fragmentary perspective view showing a modified form
of paperboard in association with a plurality of containers;
FIG. 20 is a transverse sectional view taken substantially along
the line 20--20 of FIG. 19, the container being shown in elevation
with the plastic film applied to the paperboard and container
top;
FIG. 21 is a fragmentary perspective view of a still further
modified form of paperboard and film associated therewith prior to
joining the margins of the film section;
FIG. 22 is a transverse sectional view of the arrangement shown in
FIG. 21, after the protective film has been folded over the
container top and heat-sealed;
FIG. 23 illustrates a further embodiment wherein the fiberboard not
only underlies the container top as previously described, but also
extends along the side and bottom surfaces of a plurality of
containers;
FIG. 24 is a view similar to FIG. 23 showing an arrangement wherein
the adjacent margins of the fiberboard are overlapped as
distinguished from the edge-to-edge arrangement shown in FIG. 23,
peripheral portions of the container being exposed;
FIG. 25 is a transverse sectional view of a packaging device of the
type shown in FIG. 24, with the upper sections of the fiberboard
shown in abutting relation; and
FIG. 26 is a fragmentary perspective view of the packaging device
shown in FIG. 25, more clearly to illustrate the manner in which
the opposed peripheral surfaces of each container are exposed to
view.
Referring now to the drawings more in detail, wherein like numerals
have been employed to designate similar parts throughout the
various views, it will be seen that one form of packaging device
contemplated by the present invention is designated generally by
the numeral 28 in FIGS. 8 and 9. The device 28 consists of a sheet
of cardboard or fiberboard 30 having a plurality of container
accommodating pockets or apertures 32. These apertures 32 are
defined by the free edges of a plurality of circumferential
marginal areas in the form of radial prongs or fingers 34. The
diameter of each aperture 32 is less than the diameter of the cap
36 of the container 38. The underside of the container cap 36
provides a circumferential shoulder or bead against which the free
edges of the prongs 34 may abut as clearly shown in FIGS. 8 and 9.
Obviously the container 38 could be in the form of a conventional
beaded can wherein the underside of the bead provides the shoulder
for accommodating the free extremities of the fingers 34.
As previously set forth herein, paperboard or fiberboard is capable
of withstanding forces resulting from the weight of a container
supported by the fiberboard teeth 34 as shown in the drawing.
However, fiberboard does not have the required inherent resilience
properties necessary to continuously urge the free extremities of
the fingers radially inwardly after the container 38 has been
telescopically associated with a companion aperture. To provide
means for maintaining the free extremities of the fingers 34
constantly in locking engagement with the underside of a container
bead, a sheet of resilient elastic film 40 is attached to the upper
surface of the sheet 30.
In fabricating the packaging device 28, the sheet of paperboard
stock 30 is fed through a perforating station so as to form the
pocket apertures 32. Also, the circumferential marginal areas
surrounding the apertures 32 is either slit to form the plurality
of prongs 34 or undulated as shown in FIG. 7 The upper surface of
the sheet 30 is then passed through a plastic spray station 42 as
indicated in FIG. 1. This sprayed plastic material serves to
condition the upper surface of the sheet 30 for subsequently
accommodating the previously mentioned film 40. The spraying also
provides a plastic coat for interconnecting the slit area
surrounding each aperture, and also provides a coating for the free
extremities or edges of the prongs 34.
After the foregoing steps of punching, severing and preliminary
spraying, the film 40 is now adhered to the upper surface of the
sheet 30, including the aforesaid marginal area. To accomplish
this, the fabricated strip may now be passed to a heating station
or unit 44 in flat condition. Heating the flat central portion of
the film or membrane 40 in the vicinity of a companion aperture 32
enhances the elasticity of the film. A die member or mandrel 46 may
be moved into contact with the central heat-treated portion of the
film 40 so as to form said film into an inverted cup as illustrated
in FIG. 6. The cap 36 of the container 38 or the beaded end of a
can type container may now be inserted within the inverted cup of
the film 40. The container cap 36 foreces the free extremities of
the prongs 34 axially and after the cap has been completely
inserted, the free edges of the prongs 34, under the influence of
the film 40 will spring back into underlying relation with respect
to the circumferential shoulder provided by the cap as clearly
illustrated in FIGS. 8 and 9. The upper extremities of the
containers 38 will thus be encapsulated by the film 40 providing a
protective cover for the top surface and sidewall of the cap.
In FIG. 7, the container packaging device is designated generally
by the numeral 28a and differs only from the previously described
packaging device 28 by the presence of undulations 34a which
function similarly to the previously mentioned prongs or fingers
34. The paperboard sheet in FIG. 7 is designated by the numeral 30a
and the film sheet is designated by the numeral 40a.
In FIGS. 10-14 inclusive a modified structure and method of
assembly are disclosed. In this modified arrangement the paperboard
or fiberboard strip is designated by the numeral 30b and it will be
noted that the strip is arranged in two parts. When the two parts
of the sheet or strip 30b are moved toward each other into edge to
edge abutment, the semicircular cutouts 32b will provide a circular
pocket, the diameter of which is such as to closely approximate the
diameter of the neck of a container 38b which is less than the
external diameter of the cap 36, or less than the diameter of a
bead if beaded containers are used. It will be seen from FIG. 12
than when the two parts of the paperboard sheet 30b are properly
positioned, the innermost edges of the sheet will be in abutting
relation with the marginal area located beneath the shoulder of the
cap. A heating station or unit 44b is employed to impart sufficient
heat to the film 40b to enhance the elasticity thereof. Thus the
heated film may be stretched tightly over the cap and firmly
adhered to the upper surface of the paperboard sheet 30b. As
previously explained, it is preferable to treat the upper surface
of the paperboard sheet 30b to assure firm adherence of the film
40b to the sheet 30b. The film 40b serves not only to hold the two
sections of the sheet 30b in abutting relation but also to
completely encapsulate the upper extremity or cap portion of the
container 38b. In FIG. 13 the film is shown in section whereas in
FIG. 14 the film is shown in elevation, completely enclosing the
cap 36b. The combined film and paperboard sheets comprise the
packaging device or unit which is designated generally by the
numeral 28b.
In FIGS. 15-17 inclusive a slightly modified form of container
packaging or carrying device is disclosed, said device being
generally designated by the numeral 28c. The device 28c, like the
previously mentioned packaging devices, is comprised of a lower
sheet of split paperboard material 30c and an upper sheet of
plastic film 40c. The device 28c differs only from the device 28b
previously described in that the device 28c is overlapped along its
innermost margins as clearly shown in FIG. 17. These overlapped
portions may be secured where necessary by stapling, as indicated
in FIG. 17. It will be noted in FIG. 15 that the innermost portions
of the sections of the paperboard sheet 30c are of such a length as
to require them to be overlapped in order to provide the sheet 30c
with circular container accommodating recesses or pockets 32c. In
all other respects the method of assembling the packaging device
28c with a container 38c are similar.
With the view of facilitating separation of one packaged container
from another, it is contemplated that the previously described
packaging devices may be scored as shown by the transverse dotted
lines 47 in FIG. 18. This arrangement serves to facilitate handling
a plurality of containers as a unit and also to permit convenient
separation of one or more container packages from the unit.
In FIGS. 19 and 20 a modified packaging device designated generally
by the numeral 28d is illustrated. The only structural difference
between the device 28d and the previously described 28b is in the
provision of depending paperboard flanges 48. The device 28d
consists of a paperboard portion 30d and a plastic film portion 40d
stretched over the tops or caps of containers 38d. The provision of
the flanges 48 lends considerable lateral or transverse strength to
the cardboard or fiberboard stock. The plastic film 40d functions
to maintain the abutting relationship of the sections of the
paperboard 30d and to encapsulate the upper surface and sidewall of
the container cap 36d.
FIGS. 21 and 22 disclose a still further modification wherein the
sections of the paperboard 30e are provided with upwardly extending
strengthening flanges 48e. It will also be noted that when these
upwardly extending flanges 48e are employed the film 40e is
stretched over the bottom surface of the paperboard stock and then
over the flanges 48e, across the upper surface of the container cap
36e. The film 40e is held in proper encapsulating relation with the
caps 36e by heat sealing the free margins of the film as shown in
FIG. 22.
FIG. 23 discloses a further modified form of packaging device
designated generally by the numeral 28f. The packaging device 28f,
like the previously described devices, includes the encapsulating
film 40f which cooperates with paperboard stock 30f which is in the
form of a box or housing for the containers 38f. Thus the
containers 38f are completely housed within a paperboard box,
thereby permitting the use of advertising material on the outer
surfaces of the box. The film 40f functions similarly with respect
to the paperboard sheet or section 30f, as previously described in
connection with the devices 28b and 28d.
FIG. 24 discloses an arrangement whereby a portion of the boxlike
member shown in FIG. 23 is provided with apertures to permit
oppositely disposed sections of the containers 38g to project
beyond the outer walls of the boxlike structure. It will also be
noted that the device in FIG. 24 incorporates the overlapping
arrangement of the paperboard sheet 30g as described in connection
with FIGS. 15-17 inclusive. In FIG. 24 numerals bearing the suffix
g have been employed to designate parts which correspond with
previously illustrated features. It will be noted that the film 40g
is stretched down over the opposed walls or sides of the boxlike
paperboard structure 30g. The exposed peripheral surfaces of the
container facilitate visual determination of the contents
thereof.
In FIGS. 25 and 26 a packaging device designated generally by the
numeral 28h is shown, which corresponds closely with the device
just described in connection with FIG. 24. The only manner in which
the device 28h of FIGS. 25 and 26 differs from the corresponding
device 28g of FIG. 24 is in the abutting arrangement of the
paperboard sections 30h.
From the foregoing it will be apparent that the present invention
contemplates the provision of a very practical packaging device for
containers having a circumferential shoulder beneath which the
axially deflected marginal areas of the paperboard stock may be
positioned. While for the purpose of disclosing one practical type
of container to which the packaging device of the present invention
may be applied, it should be understood that the device functions
equally as well in association with the upper extremity of a beaded
container such as a can type container. In such instances the
underside of the upper bead provides the circumferential shoulder
corresponding with the underside of the container caps previously
described.
The foregoing novel method of assembly makes for a very economical
packaging device and may be practiced without the necessity of
employing expensive or complicated equipment. The resulting
product, as described herein, is also combustible and therefore
readily disposable after the containers have been removed
therefrom. The present invention makes it possible to mount a
plurality of containers beneath a single sheet of paperboard stock
and film. This enables the shipment or transportation of a
plurality of containers within a carton without the potential
hazard of breakage. In such instances the novel packaging
arrangement or device contemplated hereby retains the containers in
proper separated relation for shipment and also facilitates the
ease with which such containers may be removed from a carton and
placed upon shelves for marketing. The prescored packaging devices
as shown in FIG. 18 permit easy separation of individual jars or
multiples thereof by a consumer, and each jar is supported and
protected by the fiberboard and the plastic film.
* * * * *