вход по аккаунту


код для вставки
Sept. 17, 1946.-
H. J. sTorrlER
Filed -May l, 1941
2 SheetséSheet 1
gepî. i?, 1946.
Filed May 1, 1941'
2 Sheets-Sheet 2
Patented Sept. 17, 1946
Herbert J. Stotter, Shaker Heights, Ohio
Application May 1, 1941, Serial No. 391,318
1 Claim. (Cl. 229-14)
This invention relates to an improvement in
lined cartons and a method of making them, and,
more particularly, to a method of making and
lining a standard four side carton upon standard
carton machinery with a liner of’heat-sealable
material and a lined carton made by this method,
the liner in the` carton being so arranged and
constructed that its open mouth may be easily
ers with a reversely turned lin diflicult to use in
flattened to be securely sealed.
automatic or semi-automatic sealers, particularly
in the case of four-sided cartons where the iin is
located at .the corner of the carton and thus >re
quires a flat seal at the mouth of the liner to
extend diagonally of the erected carton. All of
the foregoing objections are overcome by this in
vention which' provides a liner with a substan
tially butt-welded longitudinal seam detectible
The well-known standard paper board or card
board cartons, in which substantially all mass
10 only by the presence of a fine longitudinal bead
production merchandise is sold, are the so-called
“four sided” cartons which are comprised. of a
which is so small that it does not interfere with
the sealing of the mouth of the liner.
In a lined
four-sided carton made according to this inven
tion, longitudinal fins on the liners are eliminat
front panel, a rear panel, side panels, glue lap,
`and end flaps formed from an integral blank 15 ed and the mouth of the liner may be sealed along
a line parallel to the front and back panels of the
characterized by fouriparallel longitudinal score
carton in an automatic or semi-automatic heat
lines which define the front, rear, and side panels
and the glue lap. Although ingenious scores and
Another object of this invention is to provide a
cuts in the carton blank may vary the ultimate
appearance of the carton, the overwhelming ma 20 lined carton in which the inner liner, though
formed from a flat liner sheet attached to a flat
jority of all cartons are basically four-sided. This
carton blank and, consequently, formed simul
is both the cause and result of the automatic
taneously with the formation of the flat blank,
carton machines used in substantially all of the
may be pulled out of the completed carton as a
numerous carton plants being substantially
standardized. The ultimate objective in manu 25 separable bag element. Heretofore, in lined car
tons in which the liner constituted a separable
facturing lined cartons„therefore, has been to
bag element, the liner was a preformed bag
invent a method which would permit a lined
around which the carton was formed or a pre
carton to be made ina standard carton machine
formed bag inserted into the completed carton.
Without altering the uconstruction o_f the machine '
or its sequence of operations, but by simply add 30 My invention eliminates the heretofore neces
ing a simple element and interposing the opera
sary, bag preforming operation.
tion of the added element so that it would not
interfere with the standard operations. This in
Other‘objects and advantages of this inven
tion will be apparent from the following specifi
cation, claim and drawings, in which:
vention achieves that objective.
Fig. 1 is a plan view of a flat four-sided carton
I-Ieretofore, any lined cartons which have been 35
susceptible of manufacture on any sort of auto
blank with a, liner sheet attached.V
Fig. 2 is a `plan view of the carton blank shown
matic machinery, standard or otherwise, have
in Fig. 1 after the first folding operation and il
,not been entirely satisfactory because of the lo
lustrating the formation of the longitudinal side
cation and arrangement of the longitudinal seam
which forms the liner sheet into a tube. The 40 seams `in the liner.
form of the longitudinal seam in the liner pre
sented a particularly diiiicult obstacle to over
come when it was attempted to heat-seal the `
open mouth of a ñlled carton.
The two types of
longitudinal liner seam used heretofore were 45
either av lap seam or a face-to-face seam Von a
Fig. 3 is an elevation of a completed collapsed
flat tubular lined four-sided carton formed from
the blank shown in Fig. l but with bottom flaps
turned up to show the bottom mouth of the liner
not be heat-sealed and the extra thickness of
Fig. 4 is a top view of a four-sided carton erect
ed from the collapsed condition shown in Fig. 3
and illustrating the manner of flattening `the
the liner at the lap Vmade heat-sealing of the
mouth of the liner.
reversely turned fin. -The lap Seam itself- Vcould
In the drawings, which disclose one form of a
mouth of thef liner diflicult. The face-to-face 50
four-sided carton embodying my invention, I0
`seam on a reversely turned iin could be heat
represents the blank' of cardboard, ,pasteboard
sealed, but, to`seal` the mouth ofrthis type of
corrugated paperboard, or like paper stock from
liner, the reversely turned ñn lmust be unfolded
which the o_uter shell of the lined carton is made.
to obtain a seal Without reentrant folds or extra
thicknesses of material. `"I‘hisrenders `suchlin
In the carton blank, `visible edges and cutsA are
shown in heavy solid lines, invisible (i. e., Viewed
margins 52 and 54 during the fabrication of the
through the liner) cuts and edges are shown as
light single dash lines, visible score lines are
carton in standard carton machinery. The liner
sheet 56 is composed of heat-scalable sheet stock,
shown as heavy double dash lines, and invisible
which is also water-proof or moisture-proof, and
score lines are shown as light double dash lines. Ul may also be oil-proof, depending upon the needs
Between the parallel longitudinal edges I I and
and characteristics of the product being pack
I2 of the blank Iíl are the four parallel longi~
aged. Examples of sheet stock meeting ‘the re
tudinal score lines I3, I4, I5, and I6. The spaced
quirements of the liner sheet 56 are rubber hy
top fold line Il and,y bottom V,fold line I6, which
may bevv completely scored or partly cutand
drohalide ñlm, such as the rubberhydrochloride
film known commercially as “Plioñlnn” polyvinyl
)resin film, such as the polyvinylchloride and/or
scored, as the end flap construction requires,"are
parallel to each other and extend at right angles
to the longitudinal score lines. The top and botè"
polyvinyl acetate film known commercially -as
“Koroseal” or “Vinylite,” cellulose acetate, or any
tom lines> and the longitudinal edges andscore ' - ' 'otherthermoplastic film which will sealV or weld
lines deñne the glue lap 2|, front panel 22, `,left , yunder heat and pressure. The liner sheet 5B may
side panel 23, back panel 24 and right side panel"
al's‘oconsi'st of ' a paper backing sheet provided
25, as shown in Fig. 1, the front-,and back panels .i .withganinner (with respect to the complete car
being of equal width but the glue lap being nar-. *I ton) surface laminated or’coated with thermo
rower than the side panels, which are‘of equal
plastic‘heat-sealing material, such as a natural or
e The ‘bottom closure' in. thecarto'n i made Vfrom
synthetic thermoplastic heat-sealing resin and/or
the! blank Iûfshownfin Fig-»1 -is designed-»to be
a` plasticizer.v :In any event,.the1ining sheet 50
should vbe thin enough so that,` two thicknesses
provided With'a sealed endY closure. iThefblank
may be> cut through iby’a knife against the blank
In, therefore, isp'rovided withrtheïcustomaryseal;
ing ñaps 3l, 32,933, andv34 integral Wi-thrthe glue
lapl and panelsZ-I; -22‘, '23, and 24,' respectively,
along lthe bottom fold line ‘ISS « The top closure
of the cartonmadefrom the blank-I û'is designed
tobe V’provided with'atuck-in closure. The blank
I Il; therefore, is rprovided with "the customaryside
ñaps V4| and d3> and tuck-in flap dâïintegral‘with
' the glue lap 2|, side’pane1`l23, and rear' panel-2li,
respectively, v‘along the top- f old line- «I l. f’ The" end
closures described above ’»are"~-merely described'by
vHJ or against a cooperating vmetal anvil as the
carton Ablank passes through a gluer in a standard
carton machine set-up.
4To fabricate my carton in standard carton ma
chinery, the blank I0 is first cutout of suitable
board sheet stock in any suitable die-cutter. The
dieecut flat blankl 0 is then run through a stand
ard window pasting machine which spots the sev
Veral'l areas of adhesive 6|,.62, 63,64, 66, 61, and'68
upon the blank I0 and substantially simultane
ously cuts> o'ff the liner sheet .5B from a rollfof
liner> stock and Vappliesthe liner sheet 50 to the
blank I6, >to form the combinedblank yand line
way 'of example, >the''particularl style‘ofïendèclo- '
sure or‘'arrangement-> and location of the end `flap
being more yfor llessI immaterial to this invention.
It is preferred, however, that the panel inside `the
vside scoreli'ne (i. e., toward' the- center of the
`sheet as' shown in Fig. 11.' `-
creas'ed‘orpressed scer'esgand, further,r that these
.theliner margin 54’ in substantially face-to-face
f Theïcombined blank Iû and liner sheet 5G is
then'passed through a standard gluer which first
blankiwith respect to the side score line,lthe line 40 applies the longitudinal band of adhesive 65 to
lörbeing 'the'side score line fin' this disclosureybe
the side panelnZt'v-by` means of a glue wheeler
provided with both-'top and bottom flaps,> and
vsiinilar'standard adhesive applying means. rThe
that the' outside edges -ofv these naps> beëcontinu
combined blank andV liner is then folded along
ations V`of' the side s'core'flinex >It isjalso preferred
the‘central score line I4 kso thatfthe glue lap »2|
overlies-the backpanel` 24 vand at least a portion
of the„longitudinal«liner-margin :52 will overlie
kjacent'‘t"he_'sidejscoreline be cut'scores rather than
topand bottom iiaps` 'extend' to' or slightlyfbey'on’d
will extend beyondv the topfand*bottom‘foldfiines
Contact“, the 'margin 52 lbeing Wide enough so that
the’longitudinal edge V'5I `of the liner 5B will ex'
tend Voutside and beyond the side Vscore line 'I5
whenthe combined carton blankr and Vliner are so
’asui‘?cient distance'toÍpermit the top edge and
Vfoldedyas shown in Fig. 2 of the drawings.
the >top fandV bottom'jed'ge's‘of "the lliner sheet; " ’
« 'rhe nner sheet 5e- is‘ofjsucii-e Ilength theti't _,
the *bottom edge Y“to be ‘sealed lwhen ‘ the ycarton
fUp- to- this'point, the operation and procedure
is formed anderected: The width o‘f ‘the'liner'
have been the standard'and conventional ones in
ysheetdâíli's -suelfrt'hat,when placed upon'the blank Y the manufacture'of standard four-sided cartons,
I0, one longitudinal margin willextendi‘beyond
except insofar asl'the liner sheet 50 is located
somewhat’diiïerently from `andjis larger (in pro.
and outside the side ’score line andthel other` lon.
gitudinall margin v«will extend outside “and over
portion to the size of the blank Ill) Vthan' the Winhang the l‘ongitudinal'edg'e of the blanko'pposite
dowof transparent film normally applied in _a
ly disposed with respect to they side score line'. 60 standardvwindow machine'. ‘ It is also novel prac
Thusfin the blank "shownVv in VVFig. y-1, one longi
tise» to ‘provideïthe preferred spots of temporary
tudinal' edge -5l-*of thetliner sheetY 56 overhangs
~adhesive e6, "G'Ijand 68.' Even 'thesegexceptions
the longitudinal edge Il yof theblank îII) to pro
tolsta'ndard practiseY do ‘not require^alterations
vide 'a maI'gîHSZand' the other longitudinal edge
53 of the blank 50 extends beyond and outsidefthe
'side-score'li'ne I6 >to -provide another longitudinal
margin 54.-' «'_I‘hev liner-¿sheet 56 isïadhered tothe
Y lblank-f'IIl-byïmea'ns of suitable areas of 'adhesive
6I, 62, 63, and 64 applied tothe-glue' iapand
inthe’window ymachine or changes in procedure
"but merelyjrequire Aa slightly different settingjof
the sheet jcuttingand vspotting elements of the
machine; -' At» this point, however, is interposed
the additional step inthe otherwise substantially
standard procedure and -an Aadditional element
panelslZI, '22,» 23,r and §24, respectively; ' Additional IPO must-be «added `to a" standard-ì‘gluer. With the
spots ory lines ottemperary> adhesive 66,* 61,' and
>folded*l carton blank passing vthrough the kgluer
-68 «may ‘ be.: applied ft'ofthei endflaps- 44, '4I ,"“and- »34,
respectively,` to" temporarily-adhere' -the ¿top `c‘o'r
in thefdirection indicated> by theldirectional‘ar
lrow'in Fig. 2, :it passes underasealing andeut
.nersv l and the `«bottom»corners of theY liner r-sheet
off element 'I0 which trims oii` the margins 52’a'nd
iii!A to .the severalïñaps ¿adjacent Y the longitudinal 75 ~54 and heat-seals' the liner sheet" 5i) ytogether
2,407,805? '
along a longitudinal seam 'H to form the liner
sheet 50 into a tube. It is also this point at which
the preferred spots of temporary adhesive 66 and
61 serve their function.` Because the feeding
tapes run continuously in a standard gluer, thus
score,- line, _or in `the Vevent that the stock in' the
blank is too soft to permit the element 'l u to heat
sealand cut-oil` „the lmer 5u directly against the
blank'„;lthelelement lu may be provided with va
thin-metal anvil which will'slipbetween the over
lyingliner and the blankto permit the element
moving the blanks uninterruptedly through the
_'lü .to out and heat-seal the liner against the hard ,
machine, heat-sealing `and cut-oí element ‘lll is
surface of the anvil rather than against the soft
held stationary by fastening it to a suitable fixed
surface ofthe blank.
‘ ,
member in the machine,` the folded blank being
It should also be pointed out that the seam ‘H
dragged under, i. e., through, the heat-sealing 10
is very narrow, being ‘preferably about as wide
andV cut-off element by the feeding tapes. If the
as the thickness of one`ply of the liner sheet.
heat-sealing and cut-off element 'lü is simply a
Thus, the seam 'it is „substantially a butt joint
stationary heated knife, as shown in Fig. 2, the
rather than awide iacefto-i‘ace joint.` Because
liner sheet‘margins 52`and 54, being free and
loose from the blank l0, would ruck up as the
forward edge of the liner sheet 50 was engaged
the inner surfacesof the liner are actually welded
by the heat-sealing and cut-off element l0. This
tendency of the loose liner margins to ruck may
be minimized by having the, element lû comprised
of'a heated wheel provided with a sharp knife> 20
as ,the liner material and just as strong as the
Wide lap or face-to-Íaoe seams, believed to `be
necessary heretofore, could be. In the drawings,
edge,v or a heated narrow-rimmed wheel which
ñrst engages and heat-seals the overlying plies of
the liner sheet and a knife immediately following
the heated narrow-rimmed wheel, which outs
together at the seam li, the seam is as strong
the Width of theseam ‘H is exaggerated for pur-_
poses of illustration. Actually, the seam 'll may
!_be_ `scarcely perceptible, being noticeable only as
a slight bead on‘the outer surface of the tubed
liner sheet.
through the heat-seal and trims off the margins 25 ...After the longitudinal seam 'il is formed,‘the `
remainder ofthe operations in forming` -the lined
52, and 5D, or by mounting the element 10 so that
carton are standard , operations performed in
it is normally raised but is lowered into engage
standard carton machinery. After the longi
ment with the blank by a suitable timer, such as
tudinal seam ‘H is formed, the next operation in
an electric eye timer, for example, just as the
forward edge of; the liner5l] passes under the ele 30 the gluer` is that of folding over the side Ipanel
25 along the side score line I6 and adhering the
ment 1t. Regardless of which one of the suitable
panel 25 to the :glue lap’2l by means of the bland
heat-sealing _and cut-off elements may be em
of adhesive t5. This operation, in the formation
ployed, the tendency of the forward edge of the
of standard unlined four-,sided cartons, normal
liner sheet 55 to ruck up is prevented by provid
ing the spots of adhesive‘ßß and 61 which adhere 35 ly follows immediatelyA after` the operation of
folding the blank along the central score line.
the forward edge of the liner'sheet 5o adjacent
After the blank has .passed through the gluer,
the margins 52 and 54 to the relatively stiffer
it is in the form of a flat collapsed lined tube. In
naps of the blank lil. Thus, as the heat-sealing
most instances it may be regarded as being com
cut-orf element engages the `forward edge of the
liner sheet 5I), the liner sheet Will >be held and 40 plete for sale to the user. However, some users
may want the flatV collapsed cartons delivered
prevented from rucking and wrinkling. If the
with the bottom of the liner tube sealed. In such
heat-seal and cut-off is started correctly, there is
no especial tendency for the‘plies of the liner
instances, the flat collapsed tubular carton is
then taken from the gluer and passed through a
sheet 50 to ruck up thereafter, particularly if the
bottom ply is secured to the blank ll) adjacent 45 right-angle gluer. In a right angle gluer the car
ton is fed throughY the machine in the direction
the seam ll, as by the area of adhesive 64, for
indicated by the directional arrow in Fig. 3. The
right-angle gluer first folds back the bottom flaps
`It should be particularly noted that tHe seam
3| and. 32, as shown in Fig. 3, exposing the bot-`
1| is formed on or just inside the side score line
I6. Thus, no reversely turned fin will be formed 50 tom of the tubular liner 56 which rests upon the
bottom ñaps 33 and 34. The bottom seal 'l2 is
when the carton is completed and erected, and
then formed by passing the carton under any
yet the seam in the liner will be substantially
supported by the corner which is formed in erect
suitable heat-sealing device, such as a heated nar
ing the carton and folding the blank along the
longitudinal side score4 line lr6. When it is stated
hereinafter that the `longitudinal seam in the
liner is formed “at” the side score line, it is to be
row-'rimmed wheel, for example, substituted for
the usual glue wheel in a right-angle gluer. ` No
out-oif device is necessary in this sealing opera
tion. In the particular carton shown, the seal
'l2 is formed by the heat-sealing device press
understood that the seam is located on or just
ing the plies of the liner together against the un
inside the side score line.
By providing the panel inside the side score 60 folded bottom ?laps. If the bottom flaps do not
line with flaps having outside edges which are
form a substantially continuous surface under
extensions of the side score line, it is usually pos
the seal, the heat-sealer for the seam 'l2 should
sible to cut through the superimposed plies of
be equipped with an anvil plate to support the.
liner during the bottom sealing operation. In
the liner sheet against the blank throughout the
length of the longitudinal seam in the liner
the embodiment shown in Fig. 3, the spot of tem
porary adhesive 68 serves to anchor the forward
sheet. Also, by cut-scoring the portions of the
laterally extending score lines which the longi
edge of the under ply of the liner 50 to the flap
34 to prevent rucking.
tudinal liner seam crosses, there are no creased
It will be noted that the bottom sealing seam
score lines which the element ll! must ride over
in forming the seam 1l. Such creased score 70 ` 'l2 extends from the central score line to the side
lines could cause the element lll to jump and fail
score line, which ‘become diagonally opposite cor
ners when the ñat collapsed carton is erected.
to form the seam 'll at the lateral score lines.
Because the seam 12 will thus extend substantal
However, in the event that the carton blank is
not provided with top and bottom naps having
ly diagonally across the bottom of the carton
outside edges which are extensions of the side 75 when erected, the seal 12 must be spaced Vbelow
’ 2,467,802
the bottom fold lines of- the carton .a sufficient
~ Ar packagel maderfrom my cartonis sift-proof,
:moisture-proof, and even oil-proof, if ztheliner
.itself is oil-proof, because allseams in the liner
sheet arevthoroughly heat-sealed. It will be
Anoted in Fig. 4 >that the longitudinal seam .1I and
the .lateral> top heat-seal will have .to cross.
distance to-prevent the liner from pulling away
from the carton walls when thecarton is erected.
Thisdistance will vary according to the relative
width vof `the erected Aeartonto its thickness.
Thus, with the width of the carton as a and the
thickness as b, thedistance a: from the bottom
fold line I8. to the seal l'12,.as shown in Fig. vv3, .
should be equal to
.Y l
Because the seam "H is so fine, however, itwill ,
notl preventV a securentop heat-seal fromlbeing
obtained. It doesl not- act asan extra thickness
of material> as did the seamsin vthe lapped‘or
face-to-.face vlongitudinal seams employedY here
To fold the». particular carton shown,l the user
From the foregoing, it is apparentthat by~ my
erects the lflat collapsed carton and the bottom
method a lined four-sided carton may be made
ñaps' are sealed or pasted together in the usual
in standard four-sided carton machinery without 4
manner to‘form a sealed bottom. `The top flaps
substantially alteringthelmachinery itself or the
will then be pulled down in the usual manner, as
sequence of normaloperations. . It is also appar
shown in Fig. 4,-to allow the'liner mouth to'be
ent that a‘carton »with a’ longitudinally. seamed
ilattened ,along the'line 73 parallel to the front ' linenmadeaccording tomy invention, may be
andlback panels for sealing, in anyy suitable heat 20 more readilyhandled in automatic carton filling
sealer. Because the spots of temporary adhesive
and. sealing machinery since. my carton liner
88 and 5l, which adhered the forward edge of the
eliminatesthe objectionable. lap or face-to-face
liner to the Viiaps during fabrication, yare very
reversely turned iin seams employed heretofore.
weak and designed for temporary adhesion only,
My invention, therefore, `though intended pri
. the mouth of theliner is separated from the flaps> V25 marilyfor standard >four-sided cartons, may be
without resistance. -After the mouth of the `liner
issealed and folded down, the flaps may -berclosed
in the usual
manner. 1
applied to improve.other special types ofcartons,
such as the vso-called “six-sided” cartons, or the
like, > whichV must. be manufactured on special
YFor clarity of illustration, the areas »of adhesive
6l, 62, $3, and 64 are shown in Fig. l as the some
what conventional heavy rectangular areas of
adhesive' which adhere the liner sheet to the
'_ MyV invention, therefore, is Vnot -limited tothe
particular embodiment disclosed, either in whole
or in part, but is limited only tothe scopevof the
margins >of the panels ofthe blank.` If these
following claim. 4In the claim, the meaning im
areas are as'heavy as shown in Fig. l, the liner
parted to theterrnsis to: be Vconsistent with'th'e
Y 50 will, »for all intents «and purposes, be perma 35 use of thesame terms .iin this specification.
nently secured in the outer carton, since it would
be practically necessary to tear the outer carton
In a cartonof the class described, a ñat tubu
apart to remove the liner 50. However, just as
lar four-sided cartonA blank folded along two
' the smally spots or linesof adhesive 56, 61, and 68
parallel longitudinal zscore lines, a vheat-scalable
will temporarilyadhere the liner 50 to the blank 40 linerV> sheet adhered to the inner surface 4of `said
I0 during the formation of the lined carton but
tubular carton. blank, and a longitudinal .seam
permit the liner to be readily separated from the
in said liner, said seam being comprised of heat#
flaps after the carton is formed, so maythe areas
sealed edges of said liner sheet and located at a
of adhesive El, 62, B3, and 64 comprise light lines
fold in said blank, said blankr having a` second
or spots of adhesive ywhich serve as somewhat
» pairof longitudinal score lines parallel to said
temporary areas of adhesive to adhere. the liner
sheet `50 to the blank lil during the formation of
the carton. Thus, after the carton is formed,
the linerßt is not interlocked with the bottom
two scorelines and top and bottom fold lines
transverse to said score lines, said score lines and
said fold lines defining a front panel, a back
panel,l and two sideY panels, vand a» transverse
flap or between the glue lap and side panel and, 50 heat-sealed seamextending across said liner’par
consequently, may be simply pulled out of the
allel to said bottom fold> line, said transverse
cartones a readily separable bag element. When
heat-sealed seam> being spaced from said bottom
the carton is packed with greasy or pasty mate
fold line at least a distance equal tothe square
rials, it is particularly convenient to be able to
root `of one-half the product of the widths of the
separate the liner readily to squeeze out or other 55 front panel and the side panel.
wise remove the greasy or pasty contents.
Без категории
Размер файла
856 Кб
Пожаловаться на содержимое документа