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Патент USA US2114623

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' April 19,‘ 1938.
R. M. BERGSTEIN
2,114,623
METHOD OF PROVIDING FOR INTERNAL ATMOSPHERIC EXPANSION,
OEFILLED BAGS AND HERMETICALLY SEALING SAME
Filed March 4, 1937
2 Sheéts-Sheet 1
INVENTOR.
BY
ATTORNEYS
April 19,1938.
'
R. M. BERGSTEIN
2,114,523
' METHODVOF PROVIDING FOR INTERNAL ATMOSPHERIC EXPANSION
OE FILLED BAGS AND HERMETICALLY SEALING SAME
2 Sheets-Sheet 2
‘ Fil‘ed March 4, 1957
‘ FIG. 11.
-
£10.12.
_
,
INVENTOR.
E0551? 7' [Vanna .?tkesrzm.
BY
ATTORNEY43.
2,114,623
Patented Apr- 19, 1938 ,_ _
UNITED STATES PATENT OFFICE
2,114,623
METHOD OF PROVIDING FOR INTERNAL
ATMOSPHERIC EXPANSION OF FILLED
BAGS AND HERMETICALLY SEALING
SAIKE
Cincinnati, Ohio. as
signor to Edna May Bergstein and himself, as
trustees
Robert Morris hergstein.
Application March 4. 1937. Serial No. 129.010
23 Claims. (CL 93-6)
My invention relates to a mode of sealing the
open end of bags having contents therein, said
J9EE}; being made of substantially impervious
'?éxLile?terLahpreferably heat scalable on the
/i—nterior surface at least, all seams of which are
hermetically sealedThis application is related to my application
Serial Number 95.124 ?led August 10th, 1936, and
is intended to cover among other things the
10 method divided out of said application.
The
disclosure herein illustrates the method which
may be carried out by the mechanism described
as a liner of carton, to further provide for a
partial inward drawing of the opposite walls of
the bag liner below the upper edges of the main
body of the carton, so that after the Sealing
?aps of the carton
has been closed over the
sealed bag liner. the atmosphere within the
5
sealed bag can expand to the extent permitted
by the ?attened portion of said bag liner within
the interior of the carton. which bag has been‘
sealed, and the bag material itself canegpsngl 10
to the limit permpg carton
‘without bulging IL
Mr ' '
TENT“
in said application. as well as the method that
othewsolse'ts of this invention will appear as
can be carried out by the mechanism described -the description of the invention proceeds.
'
15 in my co-pending application. Serial No. 131,738
In my co-pending application, serial No, 15
?ied March 18, 1937 or by other mechanical 66,650 ?led March 2, 1936, I described a. bag
means or by hand manipulation.
made of substantially impervious material, the
The results which I produce in accordance inner surface of which is heat fusible, which
with the method herein described, which can surface is integrally united at all seams, no
20 be carried out either by hand or by machine, re-entrant iolds being interposed between said 20
is to reduce the atmospheric volume within the - Joints so that the walls can be integrally united
bag coincident with closing it and. prior to ef- without pin holes which would be formed at
lecting the ?nal seal. then to produce the seal infolded ends of reentrant folds, resulting in said
by uniting hermetically portions or the two oppo- seams being leak-proof and air-tight. Such a
a site mouth walls in a face to face relationship bag independently 01‘ as the inner liner of a 25
with no folds intervening therebetween, to pro— carbon. 08!! be used for Purposes of retaining
duce an air-tight liquid-tight s
, providing liquids 01' 89-585. an accomplishment not hereto
____space 101' interna_l__atmospheric expansion within
tore attained in bags or ?exible containers. To
,0 face to face ,iusion between the interior surfaces
or said. walls by heat, to produce a, seem that
is integral with the interior surface of the bag
it hasbeen tilled with contents and mouth sea1ed,- "30
it is necessary of course that the mouth be
sealed just as e?eotively as the remaining bag
the'séiledbig'??rda'ftc?'l thu’s' 'prov'icleadirect
material itself.
retain these same properties in the bag after
joints, namely: by an air-tight and liquid-tight
Another object of my invention is to cause a. -‘closure, or else the other properties of the sealed
35 curving on straight line of a limited portion of ‘bag wouidbelost. .None of the bag-sealing meth- 35
said ?attened area, extending entirely across ,ods in the present state of the art is capable
said ?attened area. to produce .an assured face of accomplishing this.
to {ace contact in said curving. and while in
A mere fusion together of the entire mouth
said curved position to apply heat to said unwed of a bag as has been proposed heretofore would
to portion.
In this way I am able to avoid any
pressure during the sealing operation above that
which will bring about a contact and thus avoid .
not be adaptable to my W116 0! bag I01‘ the 40
following reasons:
(1)’ If such an air-tight closure should be
the danger of a poor seal when thebag sealing made on my type of bag. the atmosphere. having
material is very soft from heat applied to it. no means of escape. would be entrapped within
45 A still further object 0! my invention is to ‘the .sealed bag mouth, permitting no folding 45
locate the seam or seams uniting said two op- manipulations 01' turning over of the mouth
poslte walls of bag mouth above the line where after being Sea-led‘
said two bag walls come together in ?attened
(2) with the atmosphere entrapped or en
relationship. so that the internal atmosphere of .closed to the. full limit permitted by the sealed
.so bag has room. thereafter to expand by ?lling -.bag, any increase in atmospheric volume for so
out the ?attened portion of bag below said seam. ' any of a variety of causes such as gases siven
And I. stlli iurther object o! my invention is
on by the contents. or the e?ect of higher tern
to accomplish all. the foregoing either in bags -pcratures,etc.. would have thrown asevere strain
. alone, or in bags which are used .as liners of
on the bag so thatin most cases a leakage would
e155 cartons. and in-the event 0! bags being used ., occur or the bag would burs-tz
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2,114,623"
Now by my method as herein described an
4
in Fig. 3, and incidental]
air-tight and liquid-tight ?nal seam is made , the bag mouth.
after the contents have been inserted, so that
y squeezes out air from
Thereafter, while retained in ?attened posi
the sealing joint is as effective as other joints
5 and the protection provided by the ?nished pacl-rage is substantially equal to that of the bag
material itself, and this is further done in such
a manner that an internal expansible area is
allowed within the sealed bag, to compensate
10 for an increase in the internal atmospheric vcl
urne. That I accomplish by sealing a zone above
the apexes of the divergent triangles of the
collapsed bag mouth.
In the drawings:
15 theFigure
1 is therein.
a perspective of an open bag having
contents
tion, a fusion is effected between the interior sur
faces of the two walls in ?at face to face rela
tionship, over a desired restricted portion of the 5
area, said seam or line of fusion being located
above the apexes of the extending triangles
formed incidental to the ?attening of the mouth.
As shown in Fig. 4 this seal is made by deflecting 10
the bag walls into a curve thus obtaining com
plete contact and applying heat at the line of
bend as at 3.
These steps can be carried out either by hand
tools or by machine, and while the bag is at rest
Fig. 2 is a fragmentary perspective of the bag
shown in Fig. l with the mouth thereof in spread
position.
20
Fig. 3 is a fragmentary perspective of the bag
after the operation of ?attening the mouth has
to whether the sealing is done while the ?attened
portion is in upright position, or whether the
?attened portion is retained in ?attened condi
tion and folded to a desired angle as shown at 4 20
in Fig. 5, and thereafter sealed as at 6 in the
or in motion.
It is also a matter of choice as
been performed.
same manner as described.
Fig. 4 is a fragmentary perspective illustrating
the seal extending across the upstanding mouth
option as to whether the heat sealed joint be
effected immediately following the sweeping to
25 of the bag.
Fig. 5 illustrates an alternative method of
forming the seal wherein the ?attened portion of
the bag is turned at a right angle to the position
shown in Fig. 4 before the sealing operation is
30 performed.
Fig.6 illustrates a bag or liner within a paperboard carton, the said bag or liner having been
subjected to a spreading and a ?attening opera-
It is also a matter of
gether to ?atten the walls, or as part of the oper- 25
ation which folds over the ?attened portion to an
angle, or whether this be accomplished as a sub
sequent step either while the ?attened portion is
upright or folded at any angle. If desired, a
means can be employed in several successive 30
steps of the operation, either to form inde
pendent heat sealed seams, or to operate suc
cessively on the same seam portion.
tion and the ?attened mouth of the bag sealed
A common factor in all variations, however, is
while in upstanding position.
that the walls of the mouth are brought together 35
Fig. 7 is a perspective similar to Fig. 6 except in ?attened relationship, and while retained in
that the sealing of the ?attened mouth has been said ?attened relationship the transverse face
performed
with the ?attened portion in a turned to face seam is made, said seam being located
down
position.
Fig. 8 is a sectional view through the ?attened above the apexes of the triangles formed inci
dental to the ?attening, so that after having been 40
mouth portion of a bag or liner and shows there- sealed the internal atmosphere within the bag
with a means for accomplishing the seal.
can expand by ?lling‘ the ?attened portion below
Fig. 8a illustrates an optional way of making a .the line of sealing; also the seal is much more
seal.
effective if made at a bent zone.
9 shows one way of closing the end ?aps
of Fig.
the carton.
Figs. 10 and 11 illustrate another and perhaps
preferable way of closing the end ?aps of the
carton.~
Fig. 12 is a section along line |2--f2 of Fig. 11.
Fig. 13 is a sectional 'ew taken through two
plies of heat sealable material showing a seal
In a hand operation a channel plate 2a can 45
be placed at one side of the walls 2 and a heated
nclled plate through the bag material. Or else 00
as in Fig. 8a, the de?ected zone can be established
formed therebetween.
by turning the projecting bag mouth by a guide
In my two above referred to applications, I
have shown mechanism of various kinds for making the desired seal, and for distending the bag
mouth and wiping the walls of the bag together.
My present application is directed to the method
edge tool 2?) placed against the opposite side of
the wall 2 and sufficiently advanced to effect a
slight pushing of the bag material into the chan—
nel but without any pressure applied to the chan- r
20, so that it curves over a heated plate 2i, or
else applying radiant heat to the curved portion. 55
The requirement for accomplishing the same
result when the bag is used as a liner for a carton
is much the same. The main additional feature
of. the aforesaid applications, and contemplates
is that the ?attening of the extending upper
either machine or hand operations.
walls of the mouth should also include a partial “0
As illustrated by the diagrams, my'invention is
capable of a considerable variety of expressions.
For example, considering ?rst an independent
bag I , with contents therein as shown in Fig. 1,
and having its inner lining at least of a readily
heat fusible material, the mouth is elongated, or
extended as by mechanical ?ngers or by hand as
in Fig. 2. Then the two opposite walls are ?attened together as by mechanical sweepers. The
base of the completely ?attened portion 2 may
either be directly on the contents level or above
?attening of these
the main
body of the carton bag
itself.walls
Thiswithin
is desirable
so
that when the ?aps of the carton have been
sealed or closed, with the sealed bag mouth in
side the carton, the atmospheric volume within the sealed bag can expand by ?lling the ?attened
portion below the bag seal, and there will also be
sufficient area available in the sealed carton to
permit expansion of the bag area itself within
the limits permitted by the enclosing carton with- 70
out bulging the latter.
the contents level with the slight tapering from
The handling of the carton ?aps themselves
the base of the ?attened portion to the contents
level itself. This second step brings the two
halves of the bag mouth ?at together as shown
form no part of my invention, and can be folded
or manipulated in any of the number of ways
now known in the present state of the ‘art, just
‘
Iv
~
0
9,114,023
so they are in a non-obstructingposition for - that according to my invention there is not actu-‘
the operations on the bag-mouth. As illustrated ally any positive pressure applied, since there is'
always a, tolerance between the tongue and
in Fig‘. 9 of the drawings, when the seal I is ac
complished while the ?attened portion Q of the slotted element, the reason being that pressure
bag mouth is in upright position one of the side of any sort applied~ after heating, might distort 91
?aps ‘I of the carton I can be folded in ?rst, the freshly softened interior portions and so pre
‘ then- the opposite pair of ?aps 9. which will bring vent the desired hermetically fused seam. ' I have not attempted to illustrate particular
in with them. the extending triangular portlons
of the bag liner, and then the ?nal ?ap I I can carton shapes or bag types in this speci?cation.
be folded over, with no direct manipulation of My novel method will apply to a wide variety of 10
the bag- mouth liner itself being required. when structures and in the claims that follow I wish
the sealed bag-‘mouth liner is folded to right ‘ to express the novel features of my method itself
angles so that it ‘lies substantiallyv within the
plane bounded by the upper edges of the main
body of the carton as indicated at II in Fig, 7, V
apart from particular forms or particular me
chanical devices.
'
Having thus described my invention, which I 15
the ?aps can be folded in the order just de- - claim as new and desire to secure by Letters
scribed, also by folding inwardly of the ?aps I,
as shown in Fig. 10 the extending triangular por
tions i! of the bag liner can be folded in prior
20 .to folding over the two side ?aps Ill. Preferably
.there is no direct manipulation of thewsealed
mouth of the bag liner, as the normal folding
and closing procedure of the carton ?aps them
selves, serves to close or fold the bag material
properly.
.,
'_
‘
,
.
The essential feature of' my invention in re
gard to the seal itself is the ?at face to face
uniting of two opposite bag walls, by means of
heat applied to a predetermined portion of the
30 ?attened area preferably applied without pres
sure except su?icient to form the curved zone
with no folds intervening therebetween, so that
the seambecomes integralwith the interior sur
face of the bag itself. The portion to be so
35 united is located preferably well above the apexes
of the triangles formed incidental to the ?atten
ing, for the further reason that directly at the
apexes of these triangles. small wrinkled or in
folded bag portions arelikely to occur, and any
40 suck wrinkles or infolds or additional thicknesses
FPatent; is:--
‘
1. A method of sealing bags whereby space is
provided for internal expansion after final seal- .
ing which consists in collapsing the bag mouth
and applying heat thereto in a zone located above
the initial contact of the mouth walls a distance
sufficient to accommodate ?uid expansion with
in the bag.
a
2. A method of sealing bags whereby space is 25.
provided for internal ‘expansion after ?nal seal
ing which consists in collapsing the bag mouth
and applying heat thereto in a zone located above
the initial contact of the mouth walls, said zone
being established by curving the bag mouth with so
out substantial pressure during heat application.
3. A method of making air- and liquid-tight
closure seams on the open end of a‘ filled bag
which consists of‘ reducing the atmospheric
volume within the interior by ?attening together 35
the opposite walls above the contents thereof,
causing a curving of said ?attened walls on at
least one straight line, said line located above
the apexes of the triangles formed due tothe
?attening of said walls, and while in curved posi 40
tion causing heat to beapplied to the curved
of material prevent an effective face to face fu
zone to result in a face to face fusion of the inner
sion required to obtain a hermetical closure.
My preferred method of e?ecting the closure ' surfaces of walls substantially de?ned by said
curvature, the spacing of said fused line being
by bringing a desired portion of the two ?at ad
su?lciently spaced above said apexes to accom 45
45 joining surfaces together in a curved or arched modate ?uid expansion‘ within the bag.
'
relationship is to assure a positive contact be
4. A method of providing space for atmos
tween the interiors of the two walls without sub
pheric expansionwithin the interior of an her- '
stantial pressure, and while in said curved posi
metically sealed bag which consists of ?attening
tion to apply heat to the curved zone.
I preferably accomplish this curved relati'on- , the walls of said open mouth of bag after same 50
50
has been ?lled with contents, thus causing a
ship between the two adjoining ?attened sur
lessening ofatmospheric volume within the in
faces by means of a tongued element and a cor
responding grooved element, which in maximum
operative relation do not actually contact but
-
which have a tolerance orclearance therebe
tween to avoid the distortion of the heat softened
inner surfaces which would be caused by actual
pressing.
As illustrated in my
‘application illustrating’
automatic machine the tongue and groove ele
ment may be either part of the sweepers used to
?atten the extending walls of the bag, or part of
the means used to fold over the ?attened mouth
of the bag, in either of which cases the tongue
and groove come together to within the small
tolerance mentioned above, and whil_e\in said
‘ operative position heat is applied to the curved
portion of the two ?attened walls.‘ ‘In another
' mechanism the bag is retained in ?attened posi
70 tion and .a portion passed between a stationery
tongue and groove element, heat, being applied
during its pamage through said element.
The curvature secures a positive- contact be
tween the interior surfaces of the two adjoining
wall portions, and it is ‘very important to note
terior of said bag, and when in ?attened posi
tion sealing the upper portion only of said
?attened
walls.
'
.
55
5. A method of making a liquid-tight and air
tight seal in‘a ?lled bag having a heat fusible
interior surface, consisting of ?attening the open
mouth causing the opposite walls to be brought
face. to face, causing a line of curvature across
a predetermined portion- of the ?attened area
above the peak of the triangles formed incidental
to said ?attening, and while in curved position
to cause a.‘ fusion of the inner surfaces at said
line of curvature by means of heat, said fused line
being su?iciently spaced above said apexes to
accommodate the subsequent internal expansion
within the bag.
_
. 6. A method of making a liquid-tight and air
tight seal in a ?lled bag having a heat fusible in
terior surface, consisting of ?attening the open
mouth causing the opposite walls to be brought ‘
face to face ‘without reentrant folds, causing a
line of curvature across a predetermined por
tion of the ?attened area above the peak of the 75
d»
_
,
23,114,828
'
vtriangles formed incidental to said ?attening,
and while in curved position tocause a. fusion of
the inner ‘surfaces at said line of curvature by
means of heat, said fused line being su?lciently
' vspaced above said apexes to accommodate the sub
sequent internal expansion within the bag.
made of substantially impervious material hav
ing contents, therein, which consists of bringing
together in ?attened relation two opposite walls
oi’ said mouth and while
in ?attened relationl
effecting an air-tight seal above the baserof the 5
?attened portion, to permit expansion within the
sealed bag and thereafter folding said ?attened
portion while retaining in ?attened position
together in ?attened relationship the two opposite '
10 walls of said mouth, and thereafter uniting the‘ e?‘ecting an hermetical‘seaLsaid seal being made
by bringing a zone above the base of the ?attened
interior surfaces of said two opposite walls by. portion
into arched condition and applying heat
' means of heat over a predetermined limited por
'7. A method of sealing the open mouth of a
fmaterial containing bag consisting of bringing
tion of said ?attened areaspaced away from the
initial line of contact of the walls so as to pro
.15 vide a substantial expansion zone in the bag
‘above the material therein.
8. A method of closing the ‘mouth of a bag made
of substantially impervious material having con
tents therein, which consists of bringing together
20 in ?attened position two ‘opposite walls of said.
mouth and while in ?attened position e?'ecting
an air-tight seal above the base of the ?attened
portion, sufliciently to permit the subsequent ex
pansion within the sealed bag.
25
‘
,
9. A method of closing the mouth of a bag
made of substantially impervious material hav
ing contents therein, which consists of bringing
together in ?attened position two opposite walls
of said mouth with no reentrant folds intervening
304 and while in ?attened position e?‘ecting an air
. tight seal above the base of the flattened por
tion, sufficiently to permit the subsequent ex
pansion within the sealed bag.
'
'
to the said area substantially defined by the arc.
14. A method of sealing hermetically the open
mouth of a bag made of relatively impervious ma
terial, heat‘ scalable on the interior at least, and 15
- with seams integrally united,‘ whereby opposite
walls of mouth are ?attened with no folds in
tervening between said walls, and applying heat
su?lciently above the juncture of said walls to fuse
interior integrally, to thus provide space for the 20
subsequent atmospheric expansion‘ internally by
means of the distending of the ?attened area
below the line de?ned by the seal.
15. A method of sealing the open mouth of av I
liner made of substantially lmpervious‘material, 25
heat sealable on the interior at least and project
ing from an end of a carton enclosing body por
tion of said liner, said carton having closing ?aps‘
attached to said end, which consists oi’ bringing
opposite liner Walls together in fully ?attened 80
condition,-.and also to cause. a partial ?attening
of said walls on the interior of main body of said
cotton, and while retaining the liner“ mouth in
1s. ‘A method of sealing an extending mouth of‘ said condition effecting a face to face hermetical
a bag made of substantially impervious material seal
between said ?attened walls above the apexes
I heat scalable on the interior at least which con
of triangular portions of liner formed incident to
sists of effecting a ?attened relationship between said ?attening, whereby internal atmosphere
, two opposite sides of said mouth with no addi
within sealed liner is sufficiently reduced to per
tional thicknessoi material intervening, and while
maintaining said ?attened relationship bringing
about a seal between said sides by heat,‘ said seal
being positioned su?lciently above the base of the
?attened area to‘permit thesubsequent atmos
pheric expansion within the‘heat sealed bag.
45
11. A method of sealing an extending mouth of
a bag made of substantially impervious material
heat scalable on the interior at least which con.
sists of effecting a ?attened relationship between
two'opposite sides of said mouth with no addi
50 tional thickness of material intervening, and while
mit.the sealed mouth to be readily foldable into
the body of carton, whereby after the closing
?aps of carton are secured the internal atmos
phere can expand the partially ?attened liner
walls to the extent permitted by the expansion of
the fully ?attened portion below line of sealing.’
16. A method ,of sealing the open mouth of a‘ 45
liner made of substantially impervious material
Joined hermetically at all seams, the body of said
liner'being-enclosed within a carton having clos
ing ?aps adjacent to open end thereof, said open
mouth projecting from said open end of carton, 50
into, ?attened contact causing a graduated taper
of said walls from their lower line of contact to
a point below the top edges of the carton, and
while in said position e?’ecting an hermetlc'clm 55
sure between walls along a line a ‘substantial dis
maintaining said ?attened relationship bringing _ consisting‘of bringing opposite side mouth walls
about a seal between said sides by heat, said seal
being positioned su?iciently above the base of the
?attened area to permit the subsequent atmos
pheric expansion within the heat sealed bag, and
said seal being made by bringing a portion of the
?attened area, extending entirely across‘ the
?attened area but at a distance above the base
tance above-said lower line of contact, whereby
the free ?attened mouth walls may subsequently
of said area,into curved relationship on a straight _ expand into the. space-provided by said taper
line, [to assure positive contact incident to'sald
curving, and applyins heat to said portion while
in curved relationship to effect a fused hermetical
seal.
-
12. A method of closing the mouth of a bag -
made of substantially impervious material ha'v»
ing contents therein, which consists of bringing
together in ?attened position two opposite walls
of said mouth and while in ?attened position.
e?ecting an air-tight seal at a distance above the
70 base of the ?attened portion, su?iciently to per
mit the subsequent expansion‘within the sealed
bag and thereafter folding said ?attened portion
while retaining in ?attened position and e?ecting
‘an hermetlcal seal. ‘
I
13. A method of closing
~ -
mouthoi a bag
within the carton.
17. A method of sealing the extending openv
mouth of a liner the main portion of which is
enclosed in an outer carton, said carton having .
closing ?aps attached'to edges of'th'e open end
adjacent to the open mouth of the liner, which
consists of causing the complete ?attening to
gether oi’ the opposite walls of liner mouth, and
partial ?attening of said walls within the main
body ‘of carton, thereafter e?ecting an hermetic
seal a distance su?lciently above'the base or the 70
completely ?attened area that the expansible
area within the sealed liner can expand to the
extent that the cubic content of the main body
' of the carton wlllpermit. .
18. A method otsealing the ‘open mouth of a
.
9,114,628
liner .whosebody is enclosed ‘in-an outer car-. plying heat to said curved section while so curved
ton which consists in: reducing the atmospheric thereafter folding sealed liner top substantially
into plane‘ de?ned by upper edges 0! main body
volume oi’ the liner prior to the sealing and there
upon sealing said liner so .that the surface area of carton, ‘tolding said carton closing and ?aps
inwardly to overlie said sealed liner top and
thereafter securing said. carton closing ?apsv to
of the liner below the line of sealing is substan
tially ‘equal at least to the internal area of the
carton body, and potential volumetric content
gether.
_
.
p
-
,
2_1.'_A method of sealing a'package comprising
within said sealed liner substantially equal to the >
cubic volume ‘oi the carton body, to provide space van outer carton having closing ?aps adJacent' to 10
open end and enclosed within the body of carton.
10 for expansion of the ?attened evacuated bag area
a liner having its open mouth extending beyond
below liner seal to‘ the limit permitted by said en
main body of carton intermediate s'aid closing
closing carton. .
>
?aps which consists ‘of folding said closing ?aps
outwardly, elongating the top of the liner and
sweeping said elongated walls together in ?at 15
19. A method of sealing the open top of a
' contents containing liner whose‘ body is enclosed '
15 within a carton having ?aps appended to its
open end, and‘ which consists in ‘securing said tened position, causing a partial contraction or
liner ‘body to the main? carton body a sui?cient .said ‘walls within the main body of the carton,
thereafter bringing‘ a section of the ?attened
distance belowthe upper edge of the main car
ton body to allow for bag expansion, then draw- ' walls above the apexes of the triangular "portions
formed incidental to said ?attening, into curved
20 ingtogether opposite walls of said openv top of
liner so that said walls extend in a graduated position in a substantially straightline extending
taper to the joint securing the main body of the ' completely across the ?attened area and apply
liner to the main body oi the carton, and then ing heat to ‘said curved section while so curved
thereafter folding inwardly one set oi’ opposite
sealing the said 'walls to each other with av sub
closing ?aps oi.’ said carton, and then folding in- ‘ _
stantial ?attened portion below the seal.
wardly the opposite pair of closing ?aps and then
‘ ‘20. A method of sealing a package comprising,
securing said. ?aps together.
an outer carton having closing ?aps adjacent ‘to
,
‘
~
22. A_method of sealing the open mouthot a
?lled bag which consists of bringing together in
open end and enclosed within the body oi’ car
ton a liner ‘having its open mouth extending be
yond main body 01' carton intermediate said clos '?attened position two opposite walls ‘of the bag
ing ?aps which consists. of iolding said closing mouth, and applying heat in two successive steps
?aps outwardly, elongating the top of the liner ‘to a predetermined portion of said ?attened area.
23. The method 01 forming a closing seam in
and sweeping said elongated walls together in
?att ed position, causing a partial contraction the 'open mouth of a ?lled-bag, the interior or
of
' walls within‘ the main body of the carton, said mouth at least being heat fusible which con
thereafter bringing a section of the ?attened sists in ?attening together opposite walls of said
walls above the apexes oi the triangular portions bag, de?ecting va portion of said walls, and while
" formed incidental to said ?attening, intoicurved so de?ected applying heat substantially con
position in asubstantially straight line extending » ?ned to the de?ected portion.
_
_
._
_
'
ROBERT MORRIS BERGSTIIN.
4o completely across the ?attened portion and ap
DISCLAIMER‘
_
_
.
a
.
2,ll4,623.—-Robert Morris BergateimCincinnati, Ohio. Mn'rnon or Pnovinnm-ron :
INTERNAL Amosrnnmc EXPANSION or FILLED BAGS AND HERMETICALLY
SEALING SAME. ' Patent dated
lifrll 19, 1938. Disclaimer ?led June 12,v
1939, by‘ the patentee and Edna
ay Bergstein, as trustees.
.
‘ ' - Hereby enters this disclaimer as to claims 1, 4, 7, and 8 of said Letters Patent.
as follows:
As to
'
,
I_, hereby disclaimifrom the method claimed any step of coils "
the bagmouth which does not include mechanical pressure applied from both sides to , _
the'outside of the bag mouth.
I _ As to claim- 4, hereby disclaim from the method claimed, any step of ?attening
the walls of the open mouth which does not include mechanical pre'ssureapplicd from
both'sidoe to .the- outside of the bag mouth.
,
'‘
.
‘ As to claim 7, hereby
from the method claimed, any etc of b ' ' ‘ 4 ' ‘
in-?attened relationshipoi the two opposite walls oi said mout , which oes .
not include mechanical PI'QS'ISUI‘Q applied from
mouth walls.
sides to the outside of the bag _
_
As to claim 8, hereby disclaim ‘from pgsite
the method
walls of
claimed,
said month,
any step‘
which
of does
, together in ?attened position, the two op
include mechamcal pressure applied from
‘[O?c'hl Gazette Jazz/183939.]
not
th sides to the outside ofthe bag mouth
.
9,114,628
liner .whosebody is enclosed ‘in-an outer car-. plying heat to said curved section while so curved
ton which consists in: reducing the atmospheric thereafter folding sealed liner top substantially
into plane‘ de?ned by upper edges 0! main body
volume oi’ the liner prior to the sealing and there
upon sealing said liner so .that the surface area of carton, ‘tolding said carton closing and ?aps
inwardly to overlie said sealed liner top and
thereafter securing said. carton closing ?apsv to
of the liner below the line of sealing is substan
tially ‘equal at least to the internal area of the
carton body, and potential volumetric content
gether.
_
.
p
-
,
2_1.'_A method of sealing a'package comprising
within said sealed liner substantially equal to the >
cubic volume ‘oi the carton body, to provide space van outer carton having closing ?aps adJacent' to 10
open end and enclosed within the body of carton.
10 for expansion of the ?attened evacuated bag area
a liner having its open mouth extending beyond
below liner seal to‘ the limit permitted by said en
main body of carton intermediate s'aid closing
closing carton. .
>
?aps which consists ‘of folding said closing ?aps
outwardly, elongating the top of the liner and
sweeping said elongated walls together in ?at 15
19. A method of sealing the open top of a
' contents containing liner whose‘ body is enclosed '
15 within a carton having ?aps appended to its
open end, and‘ which consists in ‘securing said tened position, causing a partial contraction or
liner ‘body to the main? carton body a sui?cient .said ‘walls within the main body of the carton,
thereafter bringing‘ a section of the ?attened
distance belowthe upper edge of the main car
ton body to allow for bag expansion, then draw- ' walls above the apexes of the triangular "portions
formed incidental to said ?attening, into curved
20 ingtogether opposite walls of said openv top of
liner so that said walls extend in a graduated position in a substantially straightline extending
taper to the joint securing the main body of the ' completely across the ?attened area and apply
liner to the main body oi the carton, and then ing heat to ‘said curved section while so curved
thereafter folding inwardly one set oi’ opposite
sealing the said 'walls to each other with av sub
closing ?aps oi.’ said carton, and then folding in- ‘ _
stantial ?attened portion below the seal.
wardly the opposite pair of closing ?aps and then
‘ ‘20. A method of sealing a package comprising,
securing said. ?aps together.
an outer carton having closing ?aps adjacent ‘to
,
‘
~
22. A_method of sealing the open mouthot a
?lled bag which consists of bringing together in
open end and enclosed within the body oi’ car
ton a liner ‘having its open mouth extending be
yond main body 01' carton intermediate said clos '?attened position two opposite walls ‘of the bag
ing ?aps which consists. of iolding said closing mouth, and applying heat in two successive steps
?aps outwardly, elongating the top of the liner ‘to a predetermined portion of said ?attened area.
23. The method 01 forming a closing seam in
and sweeping said elongated walls together in
?att ed position, causing a partial contraction the 'open mouth of a ?lled-bag, the interior or
of
' walls within‘ the main body of the carton, said mouth at least being heat fusible which con
thereafter bringing a section of the ?attened sists in ?attening together opposite walls of said
walls above the apexes oi the triangular portions bag, de?ecting va portion of said walls, and while
" formed incidental to said ?attening, intoicurved so de?ected applying heat substantially con
position in asubstantially straight line extending » ?ned to the de?ected portion.
_
_
._
_
'
ROBERT MORRIS BERGSTIIN.
4o completely across the ?attened portion and ap
DISCLAIMER‘
_
_
.
a
.
2,ll4,623.—-Robert Morris BergateimCincinnati, Ohio. Mn'rnon or Pnovinnm-ron :
INTERNAL Amosrnnmc EXPANSION or FILLED BAGS AND HERMETICALLY
SEALING SAME. ' Patent dated
lifrll 19, 1938. Disclaimer ?led June 12,v
1939, by‘ the patentee and Edna
ay Bergstein, as trustees.
.
‘ ' - Hereby enters this disclaimer as to claims 1, 4, 7, and 8 of said Letters Patent.
as follows:
As to
'
,
I_, hereby disclaimifrom the method claimed any step of coils "
the bagmouth which does not include mechanical pressure applied from both sides to , _
the'outside of the bag mouth.
I _ As to claim- 4, hereby disclaim from the method claimed, any step of ?attening
the walls of the open mouth which does not include mechanical pre'ssureapplicd from
both'sidoe to .the- outside of the bag mouth.
,
'‘
.
‘ As to claim 7, hereby
from the method claimed, any etc of b ' ' ‘ 4 ' ‘
in-?attened relationshipoi the two opposite walls oi said mout , which oes .
not include mechanical PI'QS'ISUI‘Q applied from
mouth walls.
sides to the outside of the bag _
_
As to claim 8, hereby disclaim ‘from pgsite
the method
walls of
claimed,
said month,
any step‘
which
of does
, together in ?attened position, the two op
include mechamcal pressure applied from
‘[O?c'hl Gazette Jazz/183939.]
not
th sides to the outside ofthe bag mouth
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