EP0201169B1 - Récipients à sommet aplati pour liquides - Google Patents

Récipients à sommet aplati pour liquides Download PDF

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Publication number
EP0201169B1
EP0201169B1 EP86301787A EP86301787A EP0201169B1 EP 0201169 B1 EP0201169 B1 EP 0201169B1 EP 86301787 A EP86301787 A EP 86301787A EP 86301787 A EP86301787 A EP 86301787A EP 0201169 B1 EP0201169 B1 EP 0201169B1
Authority
EP
European Patent Office
Prior art keywords
panel
panels
fold
adjacent
outer closure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86301787A
Other languages
German (de)
English (en)
Other versions
EP0201169A3 (en
EP0201169A2 (fr
Inventor
Robert H. Muehlbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ex-Cell-O Corp
Original Assignee
Ex-Cell-O Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ex-Cell-O Corp filed Critical Ex-Cell-O Corp
Priority to AT86301787T priority Critical patent/ATE52981T1/de
Publication of EP0201169A2 publication Critical patent/EP0201169A2/fr
Publication of EP0201169A3 publication Critical patent/EP0201169A3/en
Application granted granted Critical
Publication of EP0201169B1 publication Critical patent/EP0201169B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65D5/061—Rectangular containers having a body with gusset-flaps folded inwardly beneath the closure flaps
    • B65D5/062—Rectangular containers having a body with gusset-flaps folded inwardly beneath the closure flaps with supplemental means facilitating the opening, e.g. tear lines, tear tabs

Definitions

  • This invention relates generally to thermoplastic coated paperboard containers for carrying liquids and blanks for constructing same and, more particularly, to an improved, easy openable flat top end closure therefor.
  • Containers for beverages such as milk and juices are conventionally constructed from thermoplastic coated paperboard.
  • One common type of these containers includes a top end closure with a folded gable roof having a vertically projecting sealed fin at the roof ridge for sealing the container.
  • Such containers are shown by U.S. Pat. No. 3 270 940.
  • the bottom end closure for same is conventionally of the infolded type, such as that shown by U.S. Pat. No. 3 120 335.
  • Another type of container includes a slant top or a flat top end closure wherein what could otherwise be a vertically projecting sealed fin, or a slanted sealed fin, may be folded flat and releasably secured to the rest of the closure.
  • U.S. Pat. Nos. 3 869 078 and 4 211 357 disclose such slant and/or flat top closures.
  • U.S. Pat. Nos. 4,012,997 and 4,093,115 disclose a container folding method and the container made by the method, wherein one side of the gable panels of the top end closure is provided with double score lines extending parallel to each other. Folding of a sealed top fin of the end closure from a vertical position to a flat position requires the application of a downward force against the outside panel to bend the sealed fin downwardly.
  • U.S. Pat. No. 4,422,570 is an example of an improved flat top end closure for a liquid carrying, paperboard container wherein the sealed fin previously used in conjunction with flat end closures is not required, but wherein a pitcher pour spout is included.
  • An external lift tab is integrally formed on one outer closure panel for initial lifting of a portion of the pitcher pour spout, and an underlying lift tab is formed on one fold-back closure panel of another portion of the pitcher pour spout, in order to facilitate. the opening process.
  • An improved opening feature for this type of arrangement is shown and described in US-A-4 610 771 filed on October 29, 1984 (published on September 9, 1986).
  • a general object of the invention is to provide a flat top end closure for a liquid carrying, paperboard container, including improved means for eliminating fluid leakage channels between abutting panel edges of the non-sealing fin type end closure disclosed in the above-mentioned Patent No. 4 422 570.
  • Another object of the invention is to provide an improved flat top end closure, wherein fluid leakage channels between abutting panel edges is eliminated by the formation of spaced protrusions on the one of the edges which is squeezed between the edges to block off any channel therebetween.
  • a further object of the invention is to provide an overlapped flat top end closure which is not formed from a sealed fin arrangement, and having spaced triangular tufts formed on one of abutting edges in the vicinity of the typical pitcher pour spout where anti-adhesive provisions are employed to provide a sealed, yet easily openable spout, for the purpose of blocking off a possible fluid leakage channel while the end closure is sealed.
  • a flat top end closure for a liquid carrying, paperboard container having a tubular body and including two oppositely disposed infolded panels and two oppositely disposed outer closure panels, the infolded panels each including a set of a substantially triangular centre panel portion defined by converging diagonal score lines and being integrally connected to the tubular body, and a pair of fold-back panels integrally connected at the diagonal score lines and folded between the substantially triangular panel portion and the respective adjacent outer closure panels, the two oppositely disposed outer closure panels including one shorter and one longer panel, with the edge portion of the longer panel overlapping the edge portion of the shorter panel and each having a diagonal opening-assist score line formed thereon and overlying the respective converging diagonal score lines defining the triangular centre panel portions of the adjacent one of the infold panels, a first lift tab formed on a side edge of the longer outer closure panel for lifting the portion of the overlying longer outer closure panel adjacent its diagonal opening-assist score line and the integrally connected underlying fold-back
  • Figure 1 illustrates the outside surface of a blank 10 including a top closure portion 12 and a body portion 14, separated by a staggered horizontal score line 16.
  • the latter includes a first side panel 18, a front panel 20, a second side panel 22, a back panel 24, and a narrow fifth panel or side seam 26.
  • the panels 18, 20, 22, 24 and 26 are defined, respectively, by a first free cut edge 28, vertical score lines 30, 32, 34, and 36, and a second tree cut edge 38.
  • a pair of outer top closure panels 40 and 42 are integrally connected to the first and second side panels 18 and 22, respectively, at the score line 16.
  • a pair of fold-in top panels 44 and 46 are integrally connected to the back and front panels, 20 and 24, respectively, at the score line 16.
  • the top panels are integrally connected to each other by the above-mentioned vertical score lines.
  • An end closure extension 48 of the side seam 26 is integrally connected to the latter at the score line 16 and to the fold-in panel 46 at the score line 36.
  • the panel 44 will serve as a pour spout, as will be explained.
  • a lift tab 50 is formed on the upper edge portion of the top panel 42 so as to be integrally connected thereto by a score line 52 extension of the vertical score line 32, extending laterally and substantially parallel to a portion of the free cut edge 86 of the panel 44.
  • Opening-assist diagonal score lines 54 and 56 are formed on the outer top panels 40 and 42, respectively.
  • the score line 54 extends substantially from the intersection of the vertical score line 30 and the horizontal score line 16 to a free cut edge 60, and divides the panel 62 into segments 62a and 62b.
  • the score line 56 extends from the intersection of the score lines 32 and 16 to the free cut.edge 66 of the panel 42, dividing the panel 42 into segments 42a and 42b, the lift tab 50 extending from the segment 42b.
  • a series of selectively shaped projections or tufts 70 are formed on the edge 60 substantially equally spaced intermediate the score line 30 and the point where the score line 54 contacts the edge 60, for a reason to be explained.
  • a pair of converging diagonal score lines 72 and 74 are formed on the fold-in top panel 44, forming a triangular pouring panel 76 with the horizontal score line 16.
  • a pair of converging diagonal score lines 78 and 80 are formed on the fold-in top panel 46, forming a triangular panel 82 with the horizontal score line 16.
  • the diagonal score lines 72, 74, 78 and 80 are preferably spaced at their lower ends slightly inward from the respective adjacent vertical score lines 30, 32, 34, and 36 along the horizontal score line 16, but may intersect the junctures of score lines 30 and 16, 34 and 16, 36 and 16, and 34 and 16, respectively, if desired.
  • a pair,--of fold-back panel portions consisting of a conventional panel portion 84 between the score lines 74 and 32 and a free cut edge 86 of the panel 44, and a longer panel portion 88 between the score lines 72 and 30 and a free cut edge 90 of the panel 44.
  • An edge portion 92 extends between the adjacent ends of the free cut edges 86 and 90, with one end substantially aligned with the diagonal score line 74 and the other end arcuately connected to the free cut edge 90. .
  • the fold-in panel 46 includes fold-back panel portions 96 and 98, each comparable to the conventional panel portion 84 of the fold-in panel' 44.
  • the panel portion 96 is defined by the score lines 78 and 34 and the free cut edge 100 of the panel 46.
  • the panel portion 98 is defined by the score lines 80 and 36 and the free cut edge 100.
  • a free cut edge 102 at the end of the side seam extension 48 aligns with the edge 100.
  • the container blank 10 illustrated in Figure 1 is formed into a side seamed blank, as illustrated in Figure 2, by rotating the body panel 24 and the side seam flap 26 as a unit about the vertical score line 34, and having the inside surfaces of the body panel 24 come into contact with the inside surface of the body panel 22, with the vertical score line 36 positioned next to the vertical score line 32, and with the inside surface of the side seam flap 26 in contact with the inside surface of the body panel 20 adjacent the vertical score line 32.
  • the body panel 18 is then rotated about the vertical score line 30 to bring its inside surface into contact with the outside surface of the side seam flap 26, and the edge 28 is positioned parallel and substantially aligned with the vertical score line 36.
  • the various members of the end closure 12 will make similar movements, and the container blank will appear as illustrated in Figure 2.
  • the container blank 10 is then sealed where the inside areas of the body panel 18 and the closure panel 40 come into contact with the outside surface of the side seam flap 26 and its extension 48.
  • the next step in forming the side seam blank into a container is illustrated in Figure 3.
  • the side seam blank is opened up into a squared or rectangular condition, after which the various parts of the end closure 12 are folded about the various score lines in the following manner.
  • the triangular closure panels 76 and 82 are moved around the horizontal score linel6 over the end of the container toward each other.
  • the outer panels 40 and 42 are also moved toward each other about the horizontal score line 16. This causes the fold-back panel portion 88 to bend around the vertical score line 30 such that the inside surfaces of the panel portion 88 and the outer panel 40 are approaching each other.
  • the panel portion 84 is moved around the diagonal score line 74 such that the inside surfaces of the panel portion 84 and the panel segment 42b are approaching each other.
  • the outside surfaces of the two fold-back panel portions 88 and 84 approach the outside of the triangular panel 76 such that the inside surfaces of the panel portion 88 and the panel segment 62b are approaching each other.
  • the lift tab 94 extends beyond the free cut edge 60 of the panel segment 62b, beneath the series of tufts 70.
  • each of the edges 86 and 60 approach the centre line of the triangular panel 76 and each other. As they abut together, the tufts 70 on the edge 60 become squeezed between the edges and form barriers to fill any channel which tends to result between the edges 86 and 60, serving to minimize any leakage therethrough.
  • the fold-back panel portions 96 and 98 make the same movements as described for the panel portions 84 and 88, with respect to their adjacent panels 42 and 82 and 40 and 82 respectively.
  • the lift tab 50 ( Figure 4) may be bent downwardly about the score line 52 and sealed against the front panel 20 to accommodate shipping and stacking.
  • opening of the flat top closure is effectuated by first releasing the lift tab 50 from the front body panel 20 and then using the released tab to lift the outer roof panel segment 42b and the underlying panel portion 84 about the respective diagonal score lines 56 and 74, lifting the edge 86 away from the edge 60 and the distorted tufts 70.
  • the pour spout shown in Figure 7, enhanced by the presence of suitable "abhesive" or anti-sealant patterns on the inside surfaces thereof, is then opened as follows: the panel portions 76, 84 and 88 of the panel 44 are caused to assume a substantially planar attitude, as shown in Figure 6, whereupon pressure against the vertical edge score lines 30 and 32 tends to cause the triangular panel portions 76 to extend outwardly.
  • the lift tab 94 may be used to lift up the panel 88 and, hence, the triangular panel portion 76 and the panel 84 from their planar attitude and beyond, into the usual pitcher pour spout (Figure 7) for dispensing the contents of the container.
  • the pour spout may, of course, be generally reclosed after use. As shown in Figure 8, the lift tab 50 may be tucked inwardly, between the fold- back panel 84 and the triangular pouring panel 76 to effectuate a "locking" condition for the reclosed flat top structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Table Devices Or Equipment (AREA)
  • Closures For Containers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Packages (AREA)

Claims (4)

1. Fermeture d'extrémité de sommet aplatie pour un réservoir en papier carton destiné à recevoir du liquide ayant un corps tubulaire et comportant deux panneaux en vis-à-vis rabattus vers l'intérieur (44, 46) et deux panneaux de fermeture extérieurs disposés en vis-à-vis (40, 42), les panneaux vers l'intérieur comportant chacun un groupe de parties de panneau de centre sensiblement triangulaires (76, 82) définis par des lignes de marquage diagonales (72/74, 78/80) et étant solidaires du corps tubulaire, et une paire de panneaux rabattus vers l'arrière (84/88, 96198) reliés selon les lignes de marquage diagonales et pliés entre la partie de panneau sensiblement triangulaire (76, 82) et les panneaux de fermeture extérieurs adjacents correspondants (40, 42), les deux panneaux de fermeture extérieurs disposés en vis-à-vis comportant un panneau plus petit (40) et un panneau plus grand (42), avec la portion formant bord du panneau le plus grand (42) recouvrant la partie de bord du panneau le plus petit (40) et chacun ayant une ligne de marquage diagonale facilitant l'ouverture (54, 56) formée sur eux et recouvrant les lignes de marquage diagonales convergentes respectives (72, 74) définissant la partie de panneau de centre triangulaire de celui des panneaux rabattus vers l'intérieur adjacents, une première languette de levage (50) formée sur un bord latéral du panneau le plus grand (42) pour lever la partie de panneau d'extrémité de fermeture située au dessus adjacente à la ligne de marquage diagonale destinée à faciliter l'ouverture (56) et le panneau rabattu vers l'arrière (84) sous-jacent qui en est solidaire, et une seconde languette de levage (84) formée sur celui des panneaux rabattus vers l'arrière (88) adjacent à la ligne de marquage diagonale facilitant l'ouverture du panneau de fermeture extérieur le plus petit (40) pour lever ledit panneau rabattu vers l'arrière (88) et la partie (62b) du panneau de fermeture le plus petit qui est en recouvrement (40) au voisinage de sa ligne de marquage diagonale facilitant l'ouverture pour favoriser l'ouverture du panneau rabattu vers l'intérieur sous-jacent (40) afin de former un bec verseur, caractérisé par un ensemble de saillies espacées (70) formé sur le bord libre (60) du panneau de fermeture extérieur le plus petit (40) pour s'étendre au-delà de celui-ci au voisinage et dans le même plan par rapport à l'autre panneau rabattu vers l'arrière (84) voisin du bord latéral du panneau de fermeture extérieur le plus grand (42) portant la première languette de levage de façon à venir en butée contre l'autre panneau rabattu vers l'arrière et à être serré entre les bords adjacents (60, 86) pour éliminer tout canal de fuite de fluide entre eux.
2. Fermeture d'extrémité de sommet aplatie selon la revendication 1 dans laquelle le nombre de saillies (70) consiste en trois touffes espacées régulièrement formées sur le bord libre (60) du panneau de fermeture extérieur le plus petit (40) entre celui qui est adjacent (88) d'un groupe (84, 88) de panneaux rabattus vers l'arrière et l'intersection de la ligne de marquage diagonale facilitant l'ouverture (54) avec le bord libre (60) du panneau de fermeture extérieur le plus petit (40).
3. Fermeture de récipient selon la revendication 1 dans laquelle les saillies (70) ont une forme triangulaire.
4. Fermeture de récipient selon la revendication 1 dans laquelle les saillies espacées (70) consistent en trois touffes espacées régulièrement.
EP86301787A 1985-04-09 1986-03-12 Récipients à sommet aplati pour liquides Expired - Lifetime EP0201169B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86301787T ATE52981T1 (de) 1985-04-09 1986-03-12 Fluessigkeitsbehaelter mit flachem oberende.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72286385A 1985-04-09 1985-04-09
US722863 1985-04-09

Publications (3)

Publication Number Publication Date
EP0201169A2 EP0201169A2 (fr) 1986-11-12
EP0201169A3 EP0201169A3 (en) 1987-08-26
EP0201169B1 true EP0201169B1 (fr) 1990-05-23

Family

ID=24903724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86301787A Expired - Lifetime EP0201169B1 (fr) 1985-04-09 1986-03-12 Récipients à sommet aplati pour liquides

Country Status (20)

Country Link
EP (1) EP0201169B1 (fr)
JP (1) JPS61287530A (fr)
AT (1) ATE52981T1 (fr)
AU (1) AU585001B2 (fr)
BR (1) BR8601581A (fr)
CA (1) CA1262112A (fr)
DE (1) DE3671419D1 (fr)
DK (1) DK158486A (fr)
ES (1) ES296684Y (fr)
FI (1) FI861462A (fr)
GR (1) GR860898B (fr)
IL (1) IL78300A0 (fr)
NO (1) NO861211L (fr)
NZ (1) NZ215506A (fr)
PT (1) PT82329A (fr)
SU (1) SU1530089A3 (fr)
TR (1) TR22600A (fr)
YU (1) YU48986A (fr)
ZA (1) ZA862413B (fr)
ZW (1) ZW6586A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0297742A3 (fr) * 1987-06-22 1990-05-16 Elopak Systems Ag Fermeture d'extrémité supérieure plate pour réceptacles pour liquides

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471076A (en) * 1967-10-17 1969-10-07 Ex Cell O Corp Container closure construction
US4422570A (en) * 1982-08-26 1983-12-27 Ex-Cell-O Corporation Flat top end closure for liquid containers
US4520929A (en) * 1984-05-31 1985-06-04 Ex-Cell-O Corporation Flat top end closure for liquid container

Also Published As

Publication number Publication date
ZW6586A1 (en) 1986-10-15
PT82329A (en) 1986-05-01
ZA862413B (en) 1986-11-26
DK158486A (da) 1986-10-10
TR22600A (tr) 1987-12-16
DK158486D0 (da) 1986-04-08
NZ215506A (en) 1988-11-29
DE3671419D1 (de) 1990-06-28
AU5568086A (en) 1986-10-16
FI861462A0 (fi) 1986-04-04
SU1530089A3 (ru) 1989-12-15
AU585001B2 (en) 1989-06-08
BR8601581A (pt) 1986-12-09
JPS61287530A (ja) 1986-12-17
YU48986A (en) 1988-08-31
EP0201169A3 (en) 1987-08-26
IL78300A0 (en) 1986-07-31
NO861211L (no) 1986-10-10
ATE52981T1 (de) 1990-06-15
ES296684U (es) 1987-12-01
ES296684Y (es) 1988-05-16
CA1262112A (fr) 1989-10-03
GR860898B (en) 1986-08-07
EP0201169A2 (fr) 1986-11-12
FI861462A (fi) 1986-10-10

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