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Dec. 10, 1946.
H, F, WATERS
2,412,547
CRUSHPROOE REINEORCED PAPERBOARD PACKAGE WITH
LIQUID-TIGHT LINER AND METHOD 0E MAKING SAME
`
Filed 1360.718, 1941
5 Sheets-Sheet l
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INVENTOR
BYHar/y f Wa/ers
Dec. 10, 1946.
H. F. WATERS
2,412,547
CRUSHPROOF REINFORCED PAPERBOARD PACKAGE WITH
.
LIQUID-TIGHT LINER AND METHOD OF MAKING SAME
vFiled Deo. 18, 1941
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2,412,547
Patented Dec. 10, 1946
UNITED STATES PATENT OFFICE
2,412,547 ,
CRUSHPROOF REINFORCED PAPERBOARD
PACKAGE WITH LIQUID-TIGHT LINER
AND METHOD 0F MAKING SAME
Harry F. Waters, New York, N. Y.
Application December 18, 1941, Serial No. 423,424
1 Claim. (Cl. 229-14)
2
1
reinforcing support or bracket member for the
This invention relates to improvements in
paper-board packages, and more particularly to a
finished package assembly.
These and other desirable features and ad
reinforced crushproof, liquid-tight package of
laminated structure.
vantages of the present invention will be described
`
in the specification, and illustrated in the accom
As is Well-known, the use of paper-board con
panying drawings, certain preferred embodiments
tainers, with or Without liquid-tight linings, has
being delineated by way of example only, for,
not hitherto been possible, due to the fact that
since .the underlying principles may be embodied
lthe crush resistance, or impact resistance, of such
in other specific package structures, it is not in
containers has been very low. 'I'he bursting tend
ency of paper-board packages containing an in 10 tended -to be limited to the ones here shown, ex
cept as such limitations are clearly imposed by
ner, liquid-tight bag adhered thereto, so as to
the
appended claim.
form a. complete entity therewith, is very marked,
In the drawings, like numerals refer -to similar
tothe point where substantially 100% failures are y
parts throughout the several views, of which
the ordinary expected result. This fact, has left
Fig. 1 is a plan view of a die-cut, paper-board
.the 馿ld of liquid packaging to sheet metal cans 15
carton
blank having oversize side wall sections,
and glass bottles. While various attempts have
and provided with a liquid-tight liner blank,
been made to use liquid proof bags in paper-board
shown thereover in phantom view;
boxes, the results have been uniformly inefficient.
Fig. 2 isa plan view of the blank of Fig. 1 folded
It has now been found that paper-board con
over on its median transverse axis to form a
.tainers or packages, including corrugated cartons, 20 fiat-folded lined package blank;
can be adapted for packaging liquids by providing
Fig. 3 is a plan view of the structure of Fig.
the packages with reinforcing sections, and form
2 with the oversized lateral edges of the carton
ing liquid-tight, oversize liners therein, which may
folded over into abutting engagement and juxta
be associated therewith under conditions such 25 posed to the cooperating panel wall.;
that the sections of .the liner, which usually burst
Fig. 4 is a partial elevation of :the bottom end
upon impact, are left unsupported or ?floating?
of the flat-folded package of Fig. 3 as squared
up, and before sealing the bottom ltabs in place;
Fig. 5 is an elevation of the package of Fig. 3
so as to be> freely movable, when displaced by
crushing or distortion of any segment of the con
tainer, resulting from impact.
It is a feature of novelty of the present inven
tion to provide a novel, liquid-tight, reinforced
cellulosic container, which is capable of resisting
crushing stresses due to impact and without
bursting.
~
It is a further feature of novelty of this inven
tion to provide novel, composite, lined, paper
board cartons and carton blanks adapted .to be
erected as a unit, and flatfolded for easy ship
ment, and 4being further adapted for final erec
tion, packaging and closure Without requiring ex
30
erected into open-mouthed package-filling posi
tion, and
`
Fig. 6 is an elevation of the package of Fig. 5
showing the top of the carton in sealed condition.
Referring now to the drawings, the carton
35 blank, as shown in Fig. l, comprises a continu
ous strip of paperboard material I0, divided along
a transverse median fold line Il, into cooperat
ing or mating sections 20, 40. These sections
are provided with front wall panel sections 2|, 4I
40 joined by a bottom section 30 having a median
fold line Il, previously described, and having
angularly disposed lateral cuts 3|, defining an
Yet another feature of novelty of 4the present
gular tabs 32. Panel 2| has two laterally ap
invention is a process for making reinforced,
pended side walls 22, 23, separated or delineated
burst-proof, liquid-carrying lined paper-board 45 from the panel by score lines 24, 25. Oversize
cartons having liquid-tight bags or liners differ
side Wall panels 26, 21, are formed integral with
entially supported on and by .the package, and
the side wall sections, and set off therefrom by
characterized by complete detachment of the
score lines 28. Side walls 22, 23 are formed with
traneous aids or materials. ?
central longitudinal score lines 29. A pair of
liner at corners and free areas contiguous to
50 transverse score lines at the top and bottom of
the distLrtable areas of the cardboard.
Another feature of novelty of the present in
vention is the provision of a paper-board canton
blank having oversize side wall sections adapted
to be folded iover on a back wall panel and ad
panel 2|, and numbered 5I, 52, respectively, set
off a >pair of upper tab members 53, 54, and a
central tab and supporting section 6D and bottom
tab sections 55, 56. Tabs 53, 54, are generally
hered thereto, the back wall -panel serving as a 55 rectangular in shape, and abut when folded
2,412,547
4
into end closing."A position. The length of tabs
53, 54,- 'is predetermined by thelength of liner
points susceptible of greater damage upon impact
which' is to be heat-sealed, as shown. The lower
tab -members 55, 56 are provided with angular
The complete lined or surfaced carton blank
may be processed or manipulated to form a. com
cut-out sections 51, which are symmetrically dis
posed to provide a desired clearance.
The other half, 40, of the carton blank has a
plete package in the manner delineated in Figs.
2 to 6, inclusive. Referring to Fig. 2, the carton
central panel section, 4l, as previously noted,
and a pair of lateral side sections 42, 43 set oil!
from the panel by the longitudinal score lines 24,
25, previously described. The inner ends of sec
tions 42, 43, are chamfered as indicated at 44.
A transverse score line 46 separates the panel
40 from the bottom segment or panel 30. The
terminal ends 41 of the side walls 42, 43, ter
minate in angular portions 41a, and the sections
are separated from the body of the panel by a
of the finished package.
' blank is shown folded over along fold line ||,
with the faces or panels 4| and 2| in juxta
position, and the edges 1| of the liner sheet ex
tending out over sections 22 of the side wall
members. The folded over carton sheet is then
subjected to heat and pressure along lines 90, 9|,
at the edges of the liner sheet 10, so as to inter
fuse and join the abutted thermoplastic edges
of the liner sheet and form a bag of fiat shape,
having a folded over bottom along the seam or
score line i l, and being permanently joined there
to by adhesive strips 82.
After the flat-folded bag section has been made,
transverse score line 48, terminating in. angu
lar notches 48a, which score line also sets off an
end panel or closure 49.
20 the entire outer surface of panel 4| may be pro
As noted in Fig. 1, a liquid-tight sheet member
vided with a plurality of adhesive strips 92. The
10 is superposed over and on the package blank
lower tabs 55, 56 of the side walls 23, 24 may
I0. This liner sheet, which is adapted to form
be spotted with adhesive, designated generally
an internal liquid-tight bag, is appropriately cut
as 94. With these adhesive strips, or sections,
to size, and, as shown, is of substantially the 25 or lines in place, the side panels 22, 23 are sev
same length as the carton blank in extended, fiat
erally folded along their median fold lines 29, so
position, and the side edges 1| thereof extend
that the marginal panels 2B, 21 of the carton
completely over section 40 and over the main
blank section 20 are folded over on panel 4i and
portion of section 20 leaving slight marginal sec
into engagement with the adhesive strips 92, be
tions 12, 13 along side wall sections 22, 23 of blank 30 ing permanently secured thereto, as by pressing,
section 20.
to give a fiat-folded carton blank having a liq
.To insure the proper maintenance or retention
uid-tight bag liner formed in place, all as in~
of the liner sheet in predetermined position, dur
dicated in the showing of Fig. 3. It will be seen
ing the forming and filling operations, and to
that in folding over of the panel sections 22, 23
provide the necessary floating edges or corners 35 on their median fold lines 29, the lateral sec
in the finished carton, the carton blank 20,
tions 14, 15, of the bag liner are folded over, as
and particularly the panel sections 2 I, 4|, and the
shown in Fig. 5, to bring the seamed edges away
side wall sections 22, 23, may be provided with
from the central fold line of the bag, indicated
generally at 16. The folding over of lateral sec
strips or dots of adhesive, 80, along the longi
tudinal and the transverse edges, While the bot 40 tions 14, 15 of the bag liner give a bellows-con
tom panel 30 may have transverse sections 82
struction to the bag liner and forms it as an essen
disposed on either side of the median fold line
tially oversize liner or filler for the carton or con
||. To prevent undesired puckering up of the
tainer, which when filled with the material to be
packaged and sealed will be rigidly held in the
folded-over liner sheet, with a concomitant fail
ure to secure a leak-proof seal at the edges 1| 45 carton due to its substantial oversize. Further
more, the expansion permitted by the bellows
of the sheet, angularly disposed slots or cuts 3|,
defining angular tabs or reentrant portions 32,
like folds 16 permit a great deal of motility to
are preferably formed at the end of the rela
the inner liner and enable it t`o adjust itself to
all positions and conditions resulting from im
tively short fold-line ii. When folded over on
pact, so that any stresses -or strains set up in
line Il, the sections 32 will be spnmg out and
the package are substantially self-compensat
away from the fold line, permitting the liner 10
ing.
to expand or bulge out immediately, and pre
venting the propagation of any puckers out to
The blank of Fig. 3, which comprises a fabri
cated 馻t-folded carton having an integral, liq
the edges of the liner. This feature is more
uid-tight bag liner formed in place therein, will
clearly shown and claimed in my application,
be adapted to be shipped in this folded, knock
Ser. No. 440,770, filed April 28, 1942. These strips
down, condition, with a resultant saving of space,
of adhesive mai1 be printed in place, or may
and transportation charges. It will be noted fur
constitute separate strips applied to the card
ther, that given necessary aseptic conditions in
board carton, or to the liner, the carton and the
paper back of the thermoplastic sheet being thus 60 the initial fabricating steps, or where the ther
moplastic face of the liner sheet may be pro
permanently joined by a strong bond. 'This adhe
vided with applied or incorporated antisepticiz
sive may comprise any of the well-known glues
ing compositions, the package of Fig. 3 in its
used for such purposes.
flat-folded condition, will provide a substantially
A particularly novel and critical feature of the
positioning and use of the adhesive strips resides 65 sterile package,?particularly suitable, in small
in the formation of free corner sections on the
several panels, which free corner sections are
sizes for the packaging of both fresh and con
centrated fruit juices, and, due to its fiat-folded
condition adapting it for packaging and ship
ment in nat-folded condition, the danger of con
be seen that the over sheet or liner, 10, will be
adhered to the carton blank, and held in posi 70 tamination of the interior of the bag is substan~
tially eliminated. To preclude any possibility of
tion at the several panel sections and tabs of
the infiltration or injection of contaminating
the latter. It will be seen further that the free
corners of the panels will also define the cor
matters into the interior of the bag liner in its
ners of the finished package or box, which cor
fiat-folded condition, the bag or box liner sheet
ners, as indicated hereinabove, are the zones or 75 10 may be cut slightly oversize along its length
designated generally by the numeral 85. It will
2,412,547
5
to permit the sealing of the mating top edges in
corners of the finished package, so as to pro
a transverse closed seam which would hermeti
cally seal the bag liner. When ready for usel
the excess top edge of the liner could be cut off
vide a desirable flexibility or capacity for free
movement of the comers of the finished pack
to permit opening and filling of the package.
When it is desired to erect the flat-folded pack
of, so that upon impact and crushing of the cor
ners of the paper-board container, the free float
age of Fig. 3 into open, material-receiving con
dition, it will only be necessary to pinch the flat
- ing bag corners will be self-adjusting and will
folded package along the fold lines 29, to bring
the carton into the substantially squared-up posi
tion shown in Fig, 4. By this action the liner is
automatically erected into position, and being
glued to the folded over bottompanel section 30
erects the latter into its normal, flat position.
With the wall sections '22, 23 now in flattened
side wall-forming position, the end tabs 55, 56,
are folded along fold line 52, over onto bottom
wall 30 and adhered thereto by the adhesive 94,
thus completing the forming and squaring up
of the bottom of the package. The vertical walls
of the package will erect the bag liner into the
open mouth position shown in Fig. 5. This pack
age may then be 駆led with any fluent mate
rial, either particulate solid, or liquid, and de
age, and particularly of the inner bag liner there
not burst. It will also be appreciated that the
novel method herein permits the formation of a
lined carton or package in which the complete
package is formed from a composite laminated
web or sheet, and folded over and adhered into
a flat-folded carton having a unitary liquid
tight bag liner formed therein in flat folded con
dition, the whole being adapted to be shipped
and transported in such馻t-folded condition and
erected when it is to be 駆led. It is also to be
'noted that due to the fact that the liner sheet
is adhered to the reinforced carton blank in a
predetermined, discontinuous manner, so as to
leave substantially free uncemented edge sections
at the several panels, the completed package will
have free floating corners of the inner bag, that
is, the bag liner will not be adhered to the package
sirably while maintaining the package in pinched 25 at the corners, with the result that the completed
condition as set forth more fully and claimed in
package, particularly when 駆led with liquid, will
my application Ser. No. 338,852, filed June 5, 1940.
be capable of meeting all standard impact and
Thereafter the bag top may be hermetically sealed
barrel tests prescribed for shipping containers.
in any suitable sealing machines, such as dis
Having now particularly described and dis
closed in my patents 2,262,480, of November 11, 30 closed my invention, what I desire to claim is:
1941; 2,252,105, of August 12, 1941; 2,239,133, of
April 22, 1941; 2,220,873 of November 5, 1940, and,
after suitably folding into and on top of the
box as described in my prior patents, 2,228,647
of January 14, 1941, 2,223,754 of December 3, 1940,
A composite laminated sheet for forming flat
folded packages, comprising a paper-board car
ton blank having longitudinal and transverse
score lines defining a pair of -front and back
main panels with a connecting bottom panel, a
the package is closed by folding over tabs 53, 54
pair� of side panels and top bottom closure flaps,
on top of the bag liner, and tab 49 thereover,
a liner sheet over the carton blank and sub
and completing the closure by adhering cover 60
stantially coextensive therewith, the said liner
thereto by suitable adhesive, indicated generally
being secured to the carton blank at the several
40 panels only and free of attachment at the cor
at 95.
ners of the panels, a half main panel-size tab at
It will now be appreciated that there has been
provided a novel, reinforced, paper-board pack
tached to each side panel foldable on and se
curable to the back main panel, and lsubstantially
half bottom panel-size tabs attached to the side
erected liquid-tight bag liner, which is perma
nently joined to the main panel walls of the 45 panels and centrally foldable therewith.
package, but is unconnected or ?floating? at the
HARRY F. WATERS. '
age having a self contained and automatically
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