US3913826A - Leak proof bottom for a paperboard container - Google Patents

Leak proof bottom for a paperboard container Download PDF

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Publication number
US3913826A
US3913826A US378535A US37853573A US3913826A US 3913826 A US3913826 A US 3913826A US 378535 A US378535 A US 378535A US 37853573 A US37853573 A US 37853573A US 3913826 A US3913826 A US 3913826A
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United States
Prior art keywords
blank
gusset
flap
tuck
flaps
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Expired - Lifetime
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US378535A
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English (en)
Inventor
Milton A Brownlee
Thomas A Tomlin
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International Paper Co
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International Paper Co
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Publication date
Application filed by International Paper Co filed Critical International Paper Co
Priority to US378535A priority Critical patent/US3913826A/en
Priority to CA201,259A priority patent/CA996521A/en
Priority to AU70808/74A priority patent/AU7080874A/en
Priority to GB29647/74A priority patent/GB1481843A/en
Priority to NO742533A priority patent/NO742533L/no
Priority to SE7409110A priority patent/SE404786B/xx
Priority to NL7409406A priority patent/NL7409406A/xx
Priority to JP49080061A priority patent/JPS5049071A/ja
Application granted granted Critical
Publication of US3913826A publication Critical patent/US3913826A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/06—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
    • B65D5/064—Rectangular containers having a body with gusset-flaps folded outwardly or adhered to the side or the top of the container

Definitions

  • a substantial quantity of fluids are packaged in paperboard containers which have been coated with a thermoplastic, e.g. polyethylene.
  • a thermoplastic e.g. polyethylene
  • the major proportion of containers of this type are used for packaging milk.
  • the container construction which is predominantly used is a so-called gable top container which is formed from a one piece blank.
  • milk carton blanks are typically manufactured by paper companies. More particularly, paperboard of the desired basis weight (pounds per 3 thousand square feet) is continuously manufactured on a paper machine and stored in large rolls. Subsequently, the paperboard thus manufactured is unrolled and fed through an extruder wherein polyethyl ene is extruded onto the surfaces of the paperboard to provide a coating. Thereafter, the thermoplastic coated paperboard is generally rerolled. The coated paperboard is fed into a press which cuts the continuous web of paperboard into container blanks of the desired size. Additionally, the same press may be employed to provide appropriate score lines which facilitate the folding and erecting of the container as well as any printing or art work.
  • the product resulting at this point is a flat, thermoplastic coated paperboard blank which has been appropriately cut and scored.
  • the two longitudinal edges of the blank are joined so as to form a square tube.
  • the joining of the two longitudinal edges is achieved through a heat seal, i.e. the polyethylene coating adjacent to the two longitudinal edges is heated and the two heated edges are pressed together.
  • Tubes of the type thus formed are generally sold in a flat condition, by the manufacturing company, to a dairy.
  • the paperboard tubes When received by the dairy, the paperboard tubes are usually sequentially fed into a so-called form, fill and seal machine.
  • the paperboard tube which was shipped in a flat condition is formed into a square tube and deposited upon an upstanding, square mandrel.
  • the tube is placed on the mandrel so that the part of the tube which will form the bottom of the container extends past the exposed end of the mandrel.
  • the machine proceeds to position the carton under a heater which heats the polyethylene coating on the bottom forming flaps to a temperature at which the polyethylene coating will act as a bonding or adhesive agent.
  • the machine then proceeds to manipulate the flaps extending past the end of the mandrel so as to form a bottom closure.
  • the mandrel moves such that the formed bottom is pressed against a series of cooled plates (pressure pads) for a time sufficient to effect a heat seal between the bottom forming flaps. Thereafter, the open top container thus fomted is stripped off the mandrel, filled with milk and the top is appropriately sealed.
  • the process steps of filling the container and sealing the top thereof are not particularly significant because the instant invention relates to an improved, bottom closure.
  • an index of the difficulty of packaging liquids such as soft drink syrups is the fact that milk carton type containers are often provided with an interior metal foil laminate when such containers are used to package soft drink syrups.
  • a container and container blank employing such a construction is disclosed in US. Pat. No. 3,365,111 which is incorporated herein by reference.
  • the invention disclosed herein comprises the combination of a thermoplastic coated paperboard blank with an improved bottom closure.
  • a blank embodying the instant invention may be formed into a container on a standard form, fill and seal machine which is either unmodified or only slightly modified depending upon the particular embodiment of the invention which is used.
  • the container resulting from erecting a blank which embodies this invention may be used to successfully package penetrative liquids such as soft drink diet syrups.
  • FIG. 1 shows the lower half of a paperboard blank of the type known to the prior art and which may be erected to form a container for packaging milk.
  • the upper part of the blank 12 shown in HO. 1 has been omitted since that part of the blank is known to the prior art and does not particularly pertain to the instant invention.
  • the blank shown therein is comprised of two major portions, i.e. a body forming portion 13 and a bottom forming portion 14.
  • the body forming portion 13 is comprised of four side wall panels 16, 17, 18 and 19, each having an equal width and forming the side walls of the erected container.
  • the side walls 16, 17, 18 and 19 are connected by longitudinal fold lines 67, 78 and 89 respectively.
  • the bottom forming portion 14 is comprised of four flaps 16a, 17a, 18a and 19a.
  • the aforementioned bottom forming flaps are connected to the side panels by transverse fold lines 26, 27, 28 and 29 respectively.
  • the four bottom flaps 160, I70, l8a and 19a are connected to each other by longitudinal fold lines 67, 78 and 89 respectively, i.e. the longitudinal fold lines which interconnect the bottom forming flaps are extensions of the fold lines which interconnect the side wall panels.
  • blanks of the type shown in FIG. 1 are provided with a so-called manufacturer joint which is foldably connected to one of the side walls, eg 16.
  • the manufacturers joint is typically heated by an exposed flame and is then overlappingly bonded to the interior surface of the side wall panel 19 adjacent to its longitudinal edge 21.
  • bottom forming portion 14 it may be noted that certain of the bottom forming flaps which form this portion have a degree of symmetry.
  • the bottom forming flaps 16a and 18a which may be defined as gusset forming flaps
  • these flaps are spaced apart by the flap 17a but are otherwise symmetrical.
  • their transverse edges 46a, 46b and 48a, 48b are transversely aligned.
  • each of the gusset forming flaps is provided with two diagonally disposed score lines which define sub-panels.
  • the diagonal score lines 31, 32 define sub-panels 16b, 16c and 16d.
  • diagonal score lines 33, 34 on the flap 18a define sub-panels 18b, I86 and 18d.
  • Flap 19a may be referred to as a tuck-in flap and flap 170 may be referred to as a cover flap. It may be noted that in the prior art construction shown in FIG. 1, the transverse edge 49 of the tuck-in flap 19a and the transverse edge 47 of the cover flap 170 are substantially aligned.
  • the blank When a blank of the type shown in FIG. 1 is to be erected to form a container, the blank is first formed into a tube as heretofore described. Thereafter, the gusset forming flaps 16a and 180 are urged downwardly into the containerv As a result of this action, the triangular sub-panels 16b and 18b may be moved into a generally horizontal position. As a result of this action, the subpanels 16c, l6d and 18c, l8d are folded back to horizontally overlie the sub-panels 16b, 18b respectively. Thus, a so-called gusset or triangular configuration is formed. The resulting triangular panels or gusset panels have an apex of the gusset points 40, 41.
  • the tuck-in flap 19a and the cover flap 170 will be moved into a horizontal position when the gusset forming flaps 16a, l8a are positioned as described above. More particularly, it may be noted that the longitudinal length of the tuck-in flap 19a and the cover flap 17a is greater than the longitudinal length of the gusset forming flaps. With regard to these dimensions, a number of factors should be pointed out. First, it may be noted that the adjacent transverse score lines are slightly displaced from each other. Thus, score lines 26, 28 are aligned with each other but are slightly longitudinally displaced from the aligned score lines 27, 29.
  • transverse score lines associated with the gusset forming flaps 16a, 18a are displaced slightly above the transverse score lines associated with the flaps 17a and 19a because the gusset forming flaps will be folded first and the flaps 17a and 19a will overlie the gusset forming flaps.
  • containers of the type erected from a blank shown in FIG. 1 are generally square.
  • the longitudinal height of the gusset forming flaps is generally equal to or slightly less than the width of the side wall panels so as to insure that when the gusset forming flaps are positioned within the container, the gusset points 40, 41 are almost touching.
  • the tuck-in flap 19a is horizontally positioned.
  • the cover flap 17a is also horizontally positioned so as to overlie the tuck-in flap 19a.
  • the word tuck-in accurately describes the flap 190 since, when the bottom is formed, the edge 49 of the tuck-in flap 19a is, in fact, tucked in between the cover flap 17a and the sub-panels 16c, 16d and 18c, 18d.
  • FIG. 2 there is shown a view which illustrates a container bottom which would result from erecting the blank shown in FIG. 1. More particularly, the view shown in FIG. 2 is that which would appear if one viewed the resulting bottom closure looking down into the tube or open ended container.
  • the resulting construction shown in FIG. 2 exemplifies the prior art and is representative of the bottom construction used on most paperboard milk cartons. Thus, it is instructive to consider this construction in some detail in order to obtain an understanding as to why this construction is deficient when one attempts to package certain liquids.
  • the gusset points 40, 41 disposed in the center of the container, are almost touching and define what might be referred to as a central axis.
  • the tuck-in flap 19a is disposed between the gusset forming flaps and the cover flap 17a. This is particularly evident in FIG. 2 where it may be noted that the edge 49 of the tuck-in flap 19a is clearly visible.
  • the transverse edges associated with the gusset forming flaps are ultimately disposed in a channel forming relation.
  • the transverse edges 46a and 46b associated with the gusset forming flap are disposed parallel to each other and underneath the gusset panel 16b.
  • the transverse edges 48a and 48b associated with the gusset forming flap 180 are disposed parallel to each other and underneath the gusset panel 18b.
  • FIG. 3 wherein the interrelation between various overlying panels and flaps is shown.
  • the transverse edge of the tuck-in flap 190 causes a channel to form which is shown in cross section at 60 and may be referred to as the tuck-in flap channel.
  • the arrows 61 generally indicate paths of leakage along the exposed edge 49.
  • the arrows 61 terminate at the edges of the container where the final leakage may occur.
  • stakes are indentations (22, 23 FIG. 2) formed in the bottom of container blanks perpendicularly across a leakage path.
  • the stake or indentation is formed by providing a small, correspondingly shaped protuberance on the pressure pad on the form, fill and seal machine.
  • gusset channel Another leakage channel which is commonly formed and difficult to seal may be referred to as the gusset channel and is formed by the transverse edges of the gusset forming flaps.
  • a gusset channel shown in cross section at 61, is formed between the two sub-panels 18d, 180, the gusset panel 18b and the tuckin flap 19a. Entrance to the gusset channel is generally afforded at the gusset points 40, 41.
  • thermoplastic coated paperboard blank of the type commonly used to form milk containers In combination with a thermoplastic coated paperboard blank of the type commonly used to form milk containers, an improved bottom forming portion is provided. In accordance with the improvement, the center portion of the transverse edge of the tuck-in flap is transversely aligned with the transverse edges of the gusset forming flaps. Additionally, thermoplastic film patches are provided on the blank which seal the two leakage channels described above when the blank is erected.
  • thermoplastic film patches are bonded to the paperboard blank on the interior side thereof and overlying the gusset points.
  • thermoplastic film patches preferably have a melt index in the range of 3.0 to 300.
  • FIG. 1 is a view of a paperboard blank known to the prior art.
  • FIG. 2 is a plan view of a container bottom of the type resulting from erecting the blank of FIG. 1.
  • FIG. 3 is a fragmentary, sectional view taken along the section lines 3--3 of FIG. 2.
  • FIG. 4 is a fragmentary, sectional view taken along the section lines 4-4 of FIG. 2.
  • FIG. 5 is a view illustrating an embodiment of the instant invention.
  • FIG. 6 is a plan view of a container bottom of the type resulting from erecting the blank of FIG. 5.
  • FIGS. 7 and 8 are plan views of a container bottom and illustrate a structural requirement of the invention.
  • FIG. 5 a paperboard blank 12' is shown and represents one embodiment of my invention. As may be noted, a major portion of the blank 12' shown in FIG. 5 is substantially identical to the blank 12 of FIG. I. Thus, to the extent that these two blanks are the same, the same reference numbers have been employed.
  • the first structural difference between the blank 12' of FIG. and the blank 12 of FIG. 1 comprises a notch or cutout 80 in the tuck-in flap 19a.
  • the purpose of the cut-out 80 is to alter the structure of the tuck-in flap 190 such that the center portion of the transverse edge thereof is aligned with the transverse edges of the gusset forming flaps 16a and 180.
  • a transverse edge 81 which is centrally located on the flap 19a and aligned with the transverse edges 46a, 46b and 48a, 48b of the gusset forming flaps.
  • the second structural difference between the prior art blank shown in FIG. I and the embodiment shown in FIG. 5 relates to the addition of thermoplastic film patches. More particularly, referring to FIG. 5, it may be noted that two patches 90 and 91 have been provided.
  • the patches 90, 91 are thermoplastic material, e.g. patches of thermoplastic film.
  • the patches are bonded, by heat sealing, preferably to the interior surface of the blank 12 and are disposed on each of the gusset forming flaps 16a, 18a in a position such that they cover the gusset points and, extend slightly beyond the transverse edges of the associated gusset forming flaps.
  • the significance of providing such thermoplastic film patches (the patches 90 and 91) in combination with a tuck-in flap having the center portion of its transverse edge aligned with the transverse edges of the gusset forming flaps will now be described.
  • FIG. 6 there is shown a plan view of the interior bottom of a container formed from a blank of the type shown in FIG. 5.
  • the effect of providing the cut-out 80 as previously described is to produce a bottom closure wherein the edge of the tuck-in flap 190 which is exposed to the interior of the container (i.e. exposed to the liquid packaged therein) is aligned with and disposed immediately beneath the gusset points.
  • the effect of this construction is to insure that the gusset channels and at least a portion of the tuck-in flap channel are coincidently aligned.
  • thermoplastic film patches 90, 91 may now be used to uniquely cooperate so as to seal these leakage channels.
  • the thermoplastic patches 90, 91 which are touching or substantially abutting, are melted and locally flow so as to cover and adhere to not only the gusset points to which they were attached, but, as well, to the adjacent center portion of the tuck-in flap 19a and the cover flap 170.
  • the gusset points are sealed and, simultaneously, the melted patches form a seal 99 blocking the entrance to the tuck-in flap channel.
  • thermoplastic film patches are in the form of a single patch disposed upon and heat-sealed to the tuck-in flap 19a at the center of the flap and adjacent the transverse edge thereof.
  • a dotted line representation of a patch 86 is shown as being disposed upon the interior surface of the tuck-in flap 19a.
  • thermoplastic patch on the interior of the surface of the cover flap 17a.
  • FIG. 5 such a patch is shown by the dotted line representation 87.
  • thermoplastic material selected must meet certain criteria.
  • the material which comprises the thermoplastic patch must be such that it will, upon melting and rehardening, adhere to the thermoplastic coating on the paperboard blank.
  • the thermoplastic material used for the patch must satisfy this requirement with respect to polyethylene.
  • Another requirement which such thermoplastic material must satisfy relates to the so-called melt index.
  • the melt index is a measure of the flowability or viscosity of a thermoplastic at an elevated temperature.
  • thermoplastic In order for a thermoplastic material to perform satisfactorily as a thermoplastic gusset point sealing means, the thermoplastic must have a degree of flowability at the heat sealing temperatures which are encountered in order to insure that the heated thermoplastic material will flow onto adjacent flaps and will flow into and seal the entrance to the leakage channels. However, the viscosity of the heated thermoplastic cannot be so low that the heated thermoplastic will be unduly dissipated by flowing over too large an area.
  • a thermoplastic with a melt index in the range of, approximately, 3.0 to 300 is acceptable. Examples of an acceptable thermoplastic are DuPonts Surlyn AD 8109 and polyethylene. If a thermoplastic is used which has a melt index in the range of 3.0 to 300, an acceptable patch may be approximately 0.75 inches square and 0.075 thick.
  • one element of the invention relates to the provision of a cut-out 80.
  • the cut-out must provide a blank construction which satisfies two criteria.
  • the center portion of the transverse edge of the tuck-in flap at least must be substantially aligned with the transverse edge of the gusset forming flaps so that when a container is formed, the gusset points are substantially aligned with the exposed edge of the tuck-in flap.
  • the remainder of the exposed edges of the tuck-in flap must be so disposed as to underlie the gusset forming flaps when the blank is erected.
  • the edges of the tuck-in flap may be disposed as shown in FIG. 7 but not as shown in FIG. 8 wherein the remainder of the edges of the tuck-in flap do not all underlie the gusset flaps, e.g. as at l] and 102.
  • An acceptable alternative construction would be to transversely cut the tuck-in flap so that it was longitudinally co-extensive with the gusset flaps as suggested by the dotted line representation 104, 105 in FIG. 5.
  • the improvement which characterizes the invention includes two separate and distinct structural changes or additions to prior art blanks and the structural changes cooperate to prevent leakage through the gusset channels and the tuck-in flap channels.
  • the invention generally contemplates providing, in combination with a paperboard blank, a bottom forming portion wherein at least the center portion of the transverse edge of the tuck-in flap is substantially aligned with the transverse edges of the gusset forming flaps and the remainder of the exposed transverse edges of the tuck-in flap are disposed to underlie the gusset forming flaps when the blank is erected.
  • the blank is provided with at least one thermoplastic film patch which is disposed on the container such that when the container is erected and heat sealed, the thermoplastic film patch will seal the gusset points and the substantially coincidently aligned tuck-in flap channels.
  • thermoplastic patch or patches must be shown disposed upon their respective bottom forming flaps such that the lower transverse edge of the patch extends beyond the transverse edges of the gusset forming flaps. Such a positioning of the thermoplastic patches is important because of the mechanism by which sealing occurs.
  • thermoplastic patch or patches disposed in this manner, when the bottom of the container is formed, the portion of the patch which extends beyond the edge of the gusset flaps will overlie and be disposed in the center of the container. In this manner, when the patch melts, the entrances to the gusset channel and the tuck-in flap channel will be sealed. Referring to FIG. 5, it may clearly be seen that each of the four patches shown therein has a portion which extends beyond the transverse terminal edge of the gusset forming flaps.
  • phrases coincidently aligned or transversely aligned refer to an alignment of at least the center portion of the transverse edge of the flap 19a with the gusset points such that when the thermoplastic patches melt, the gusset points and the tuckin flap channels are sealed.
  • thermoplastic coated paperboard blank adapted to be erected to form a square, heat sealed container, said blank having a body forming portion and a bottom forming portion, said bottom forming portion including two spaced apart gusset forming flaps having substantially aligned transverse edges and forming gusset points when said blank is erected, a cover flap foldably connected by a longitudinal fold line to at least one of said gusset forming flaps, and a tuck-in flap foldably connected by a longitudinal fold line to at least one of said gusset forming flaps, the improvement which comprises:
  • thermoplastic film patch bonded to at least one of said flaps adjacent to the center of the transverse edge thereof and extending beyond the transverse edge of said gusset forming flaps whereby, when said blank is erected and heat sealed to form a container, both said gusset points and the center portion of the transverse edge of said tuck-in flap are sealed by said thermoplastic film patch.
  • thermoplastic film patch is bonded to each of said gusset forming flaps and overlies said gusset points.
  • thermoplastic film patch is polyethylene
  • thermoplastic patch has a melt index in the range of approximately 3.0 to 300.
  • thermoplastic patch has a melt index in the range of approximately 3.0 to 300.
  • thermoplastic film patches are bonded to the interior surface of said gusset forming flaps.
  • thermoplastic film patch is bonded to the interior surface of said tuckin flap and overlies the center portion of said tuck-in flap adjacent to the transverse edge thereof.
  • thermoplastic coated paperboard blank adapted to be erected to form a heat sealed container
  • said blank having a body forming portion and a bottom forming portion, said bottom forming portion including two spaced apart gusset forming fiaps having substantially aligned transverse edges and forming gusset points when said blank is erected, a cover flap foldably connected by a longitudinal fold line to at least one of said gusset forming flaps, and a respective one of said gusset forming flaps so as to overlie said gusset points and each of said patches extending beyond the transverse edge of said gusset forming flaps whereby, when said blank is erected and heat sealed to form a container, both said gusset points and the center portion of the transverse edge of said tuck-in flap are sealed by said thermoplastic film patch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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US378535A 1973-07-12 1973-07-12 Leak proof bottom for a paperboard container Expired - Lifetime US3913826A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US378535A US3913826A (en) 1973-07-12 1973-07-12 Leak proof bottom for a paperboard container
CA201,259A CA996521A (en) 1973-07-12 1974-05-30 Leak proof bottom for a paperboard container
AU70808/74A AU7080874A (en) 1973-07-12 1974-07-03 Container
GB29647/74A GB1481843A (en) 1973-07-12 1974-07-04 Leak proof bottom for a paperboard container
NO742533A NO742533L (enrdf_load_html_response) 1973-07-12 1974-07-11
SE7409110A SE404786B (sv) 1973-07-12 1974-07-11 Leckagefri botten for behallare av kartong eller board
NL7409406A NL7409406A (nl) 1973-07-12 1974-07-11 Lekvrije bodem voor een kartonnen reservoir.
JP49080061A JPS5049071A (enrdf_load_html_response) 1973-07-12 1974-07-12

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US378535A US3913826A (en) 1973-07-12 1973-07-12 Leak proof bottom for a paperboard container

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US3913826A true US3913826A (en) 1975-10-21

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US378535A Expired - Lifetime US3913826A (en) 1973-07-12 1973-07-12 Leak proof bottom for a paperboard container

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US (1) US3913826A (enrdf_load_html_response)
JP (1) JPS5049071A (enrdf_load_html_response)
AU (1) AU7080874A (enrdf_load_html_response)
CA (1) CA996521A (enrdf_load_html_response)
GB (1) GB1481843A (enrdf_load_html_response)
NL (1) NL7409406A (enrdf_load_html_response)
NO (1) NO742533L (enrdf_load_html_response)
SE (1) SE404786B (enrdf_load_html_response)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503094A1 (fr) * 1981-04-01 1982-10-08 Linnich Papier & Kunststoff Emballage pour liquides forme par pliage d'un flan de carton
EP0089033A1 (en) * 1982-03-12 1983-09-21 International Paper Company Container with raw edge protection
US4586643A (en) * 1984-06-01 1986-05-06 Weyerhaeuser Company Reinforced container
US4690835A (en) * 1984-06-01 1987-09-01 Weyerhaeuser Company Reinforced container
US4730766A (en) * 1985-12-20 1988-03-15 Continental Bondware, Inc. Sealing of void area at the top of cup bead of hot melt
EP0320093A3 (en) * 1987-12-07 1990-05-02 Elopak Systems Ag Flat end closure arrangement for cartons
US5085367A (en) * 1991-05-03 1992-02-04 Ronald Carstens Corrugated cardboard boxes with increased compression strength
US5916080A (en) * 1996-01-25 1999-06-29 International Paper Company Method for production and application of a container fixant applicator therefor
US20190270538A1 (en) * 2013-11-26 2019-09-05 Kraft Foods R & D, Inc. Packaging and packaging blank
US20200122869A1 (en) * 2017-11-06 2020-04-23 JLS Automation Method and System For Packaging A Container

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362862A (en) * 1942-07-15 1944-11-14 Harlow M Russell Paper container for fluid
US2440664A (en) * 1945-07-28 1948-04-27 Dow Chemical Co Making lap-welded articles from thermoplastic films
US2496043A (en) * 1946-07-26 1950-01-31 Marathon Corp Leakproof package and method of making same
US2926777A (en) * 1957-03-28 1960-03-01 Gibraltar Corrugated Paper Com Combined shipping and display cases
US3120335A (en) * 1961-09-07 1964-02-04 Ex Cell O Corp Container with infolded bottom closure
US3194473A (en) * 1961-08-23 1965-07-13 Kvp Sutherland Paper Co Sealable overlap carton
US3365111A (en) * 1966-03-21 1968-01-23 Int Paper Co Laminated container
US3412922A (en) * 1966-09-06 1968-11-26 Ex Cell O Corp Paperboard container closure
US3421678A (en) * 1967-10-09 1969-01-14 Us Plywood Champ Papers Inc Profile coated carton
US3455496A (en) * 1964-03-27 1969-07-15 Procter & Gamble Seal end carton
US3474951A (en) * 1968-07-19 1969-10-28 Ex Cell O Corp Container closure

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362862A (en) * 1942-07-15 1944-11-14 Harlow M Russell Paper container for fluid
US2440664A (en) * 1945-07-28 1948-04-27 Dow Chemical Co Making lap-welded articles from thermoplastic films
US2496043A (en) * 1946-07-26 1950-01-31 Marathon Corp Leakproof package and method of making same
US2926777A (en) * 1957-03-28 1960-03-01 Gibraltar Corrugated Paper Com Combined shipping and display cases
US3194473A (en) * 1961-08-23 1965-07-13 Kvp Sutherland Paper Co Sealable overlap carton
US3120335A (en) * 1961-09-07 1964-02-04 Ex Cell O Corp Container with infolded bottom closure
US3455496A (en) * 1964-03-27 1969-07-15 Procter & Gamble Seal end carton
US3365111A (en) * 1966-03-21 1968-01-23 Int Paper Co Laminated container
US3412922A (en) * 1966-09-06 1968-11-26 Ex Cell O Corp Paperboard container closure
US3421678A (en) * 1967-10-09 1969-01-14 Us Plywood Champ Papers Inc Profile coated carton
US3474951A (en) * 1968-07-19 1969-10-28 Ex Cell O Corp Container closure

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728024A (en) * 1981-04-01 1988-03-01 PKL Papier-und Kunstoff Liquid packaging container with filmed-over notches
US4801073A (en) * 1981-04-01 1989-01-31 Pkl Papier- Und Kunstoff Werke Linnich Gmbh Liquid packaging container with a filmed-over notch
FR2503094A1 (fr) * 1981-04-01 1982-10-08 Linnich Papier & Kunststoff Emballage pour liquides forme par pliage d'un flan de carton
EP0089033A1 (en) * 1982-03-12 1983-09-21 International Paper Company Container with raw edge protection
US4690835A (en) * 1984-06-01 1987-09-01 Weyerhaeuser Company Reinforced container
US4586643A (en) * 1984-06-01 1986-05-06 Weyerhaeuser Company Reinforced container
US4730766A (en) * 1985-12-20 1988-03-15 Continental Bondware, Inc. Sealing of void area at the top of cup bead of hot melt
EP0320093A3 (en) * 1987-12-07 1990-05-02 Elopak Systems Ag Flat end closure arrangement for cartons
US5085367A (en) * 1991-05-03 1992-02-04 Ronald Carstens Corrugated cardboard boxes with increased compression strength
US5916080A (en) * 1996-01-25 1999-06-29 International Paper Company Method for production and application of a container fixant applicator therefor
US20190270538A1 (en) * 2013-11-26 2019-09-05 Kraft Foods R & D, Inc. Packaging and packaging blank
US11077983B2 (en) * 2013-11-26 2021-08-03 Intercontinental Great Brands Llc Packaging and packaging blank
US20200122869A1 (en) * 2017-11-06 2020-04-23 JLS Automation Method and System For Packaging A Container

Also Published As

Publication number Publication date
GB1481843A (en) 1977-08-03
JPS5049071A (enrdf_load_html_response) 1975-05-01
SE7409110L (sv) 1975-01-13
CA996521A (en) 1976-09-07
AU7080874A (en) 1976-01-08
SE404786B (sv) 1978-10-30
NL7409406A (nl) 1975-01-14
NO742533L (enrdf_load_html_response) 1975-02-10

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