EP0552928A1 - Verpackung und Zuschnitt dafür - Google Patents

Verpackung und Zuschnitt dafür Download PDF

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Publication number
EP0552928A1
EP0552928A1 EP93300370A EP93300370A EP0552928A1 EP 0552928 A1 EP0552928 A1 EP 0552928A1 EP 93300370 A EP93300370 A EP 93300370A EP 93300370 A EP93300370 A EP 93300370A EP 0552928 A1 EP0552928 A1 EP 0552928A1
Authority
EP
European Patent Office
Prior art keywords
panels
closure
panel
edge
closure panels
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.)
Withdrawn
Application number
EP93300370A
Other languages
English (en)
French (fr)
Inventor
Robert Edward Lisiecki
Howard Elwood Murrah
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.)
Elopak Systems AG
Original Assignee
Elopak Systems AG
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 Elopak Systems AG filed Critical Elopak Systems AG
Publication of EP0552928A1 publication Critical patent/EP0552928A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • B65D5/701—Tearable flaps defined by score-lines or incisions provided in the closure flaps of a tubular container made of a single blank

Definitions

  • This invention relates generally to containers and, more particularly, to a blank and a container including an end closure of an improved construction.
  • Containers for beverages such as milk, cream, other dairy products, juices, and the like, are conventionally constructed from thermoplastics-coated paperboard.
  • these containers include a top end closure with a folded roof structure adapted to providing a readily available pouring spout when the contents of the container are to be dispensed.
  • Coated paperboard blanks for constructing such a container are made on converting machines similar to those disclosed by US-A-2,672,208 and 3,731,600. After construction, the blanks are processed by forming, filling and sealing machines, such as those disclosed by US-A-3,303,761; 3,918,236; 3,398,659; or 4,193,833, to produce the formed, filled and sealed containers of the type referred to above and shown and described in US-A- 3,270,940 or 4,422,570.
  • the structure disclosed in US-A-4,784,272 is formed to include perforations along the score line between the front panel and the adjacent flat top panel.
  • the structure disclosed in US-A-4,702,407 is formed to include perforations on the front panel adjacent the top end portion thereof, and along the fold lines between the side panels and the respective side edge panels.
  • US-A-4,397,415 discloses a perforated line or partial cut formed horizontally across the fold line between a front fold-in panel segment and a fold-out segment. Accordingly, when the top is opened by breaking the perforated line or partial cut, and lifting the cover panel, a horizontal front edge panel remains, as well as a pair of oppositely disposed side fold-in edge panels, each bearing paper tear surfaces.
  • US-A-2,758,775 discloses a flat top container wherein perforations are formed along the length of the cover panel adjacent the side edges thereof for co-operation with side edge panels connected to fold-in side panels of the container.
  • US-A-2,819,832 discloses a flat top container having edge panels formed on the sides of an outer cover panel, and which are cut apart from side edge panels connected to the top ends of the respective container side panels.
  • US-A-3,661,321 discloses a paperboard carton for packing particulate, granular or powdery products and also discloses a method of folding closure flaps for adhesive application and closing the carton. Gusset side flaps are first folded out and a major flap to which the side flaps are connected is folded in. This forms a virtual coplanar surface to which adhesive is applied. Next the gusset side flaps are folded in and under the major flap. A second major flap substantially equal in area to the first is then folded down over the first major flap to form a cover flap. Two cut-score lines which operate in conjunction with a grip tab integrally connected to one side flap provide an easy-open feature which makes a triangular opening.
  • opening of the container can produced a random delamination of the cover panel, sometimes leaving undesired, thin, delamination webs extending inwards from the side edge panels.
  • the heating of the respective opposite edges of the blank transverse to the row of body panels in side-seaming can render that edge of the thermoplastics inside surface of the cover panel less effective for subsequent heat-sealing of the cover panel to the adjacent side edge panel.
  • edges of triangular, edge panel segments and of a side seam extension panel in the top end closure extend across the side edge panels from the inner edges of the side edge panels to the outer edges thereof and thus provide short paths for seepage or "wicking" of fluid contents of the container to the outside of the container.
  • pairs of these cut edges lie one upon the other as steps each two-thicknesses high, so that the thermoplastics of the closure panels sandwiching such step between them may not fully seal the gap at the step.
  • thermoplastic-coated paperboard container including:
  • thermoplastic-coated paperboard blank including:
  • thermoplastic-coated paperboard container including:-
  • thermoplastic-coated paperboard blank for forming into a container, wherein the blank includes:-
  • a container including:-
  • a blank for forming into a container wherein the blank includes:-
  • thermoplastic-surfaced blank for forming into a container, wherein the blank includes:
  • thermoplastic-surfaced container including:
  • thermoplastic inside surface of the cover panel it is possible to avoid degrading of the thermoplastic inside surface of the cover panel during seaming.
  • thermoplastic-coated paperboard container including an improved top closure which is of increased liquid-tightness, yet which is conveniently openable and from which the contents are readily pourable.
  • Figure 1 illustrates a container blank 10 generally in three sections consisting of a top end closure 12, a body portion 14, and a conventional flat bottom end closure (not-shown).
  • the latter may be any suitable end closure arrangement and is not a part of this invention.
  • horizontal score lines 16a, 16b, 16c, 16d and 16e extend transversely across the container blank 10 and define the boundary between the top end closure 12 and the body portion 14.
  • bottom horizontal score lines (not shown) extend transversely across the container blank 10 and define the boundary between the bottom end closure (not shown) and the body portion 14.
  • the body portion 14 comprises a plurality of integrally connected body panels, namely, in Figure 1 from right to left, a front panel 18, a side panel 20, a back panel 22 and a side panel 24, and a side seam flap or narrow fifth panel 26 formed adjacent the panel 24.
  • the container blank 10 is defined on its longitudinal sides by edges 28 and 30.
  • the body panels 18, 20, 22 and 24, and the side seam flap 26, are defined by vertical score lines 32, 34, 36 and 38. It should be apparent that the body panels may be equal in width and, hence, adapted to forming a square cross-section container, or may be formed such that one pair of alternate body panels is wider than the other pair and, hence, adapted to forming an oblong rectangular cross-section container.
  • the top end closure 12 comprises side fold-in edge panels 40 and 42.
  • the panels 40 and 42 are connected integrally to the upper ends of the body panels 20 and 24, respectively.
  • a cover panel 44 and a front edge panel 46 are connected integrally to the body panels 22 and 18, respectively.
  • a further panel 48 is connected integrally to the upper end of the side seam flap 26.
  • the panel 40 terminates in a free cut edge 49.
  • a diagonal score line 50 extends from the approximate junction of the score lines 16b and 32 to the free cut edge 49 of the panel 40, forming a triangular fold-over panel segment 51.
  • the panel 42 terminates in a free cut edge 43.
  • a diagonal score line 52 extends from the approximate juncture of the score lines 16d and 38 to the free cut edge 43 of the panel 42, forming a triangular fold-over panel segment 53.
  • the triangular fold-over panel segments and their diagonal score lines could be formed in a fold-in segment 54.
  • the front edge panel 46 includes the fold-in segment 54 connected to the body panel 18 and a narrower segment 56 extending from the panel segment 54, with a score line 58 formed therebetween.
  • a horizontal score line 60 is formed across the panel segment 56 at a distance from the score line 58 approximately equal to the height of the panel segment 54, dividing the segment 56 into a fold-out portion 56a and a fold-down portion 56b, the latter to become a lift tab, as will be explained.
  • An arcuate-shaped perforated line 70 is formed in the panel segment 54 arcing from the juncture of the free cut edges of the panel segment 54 and the portion 56a on the right, to the juncture of the free cut edges of the panel segment 54 and the portion 56a on the left, and substantially touching the mid-point of the score line 16a.
  • Cover edge panels 72 and 74 are connected by weakened lines 76 and 78, respectively, to the sides of the cover panel 44.
  • the score lines 76 and 78 are continuations of the score lines 34 and 36, respectively.
  • the weakened lines 76 and 78 may be either score lines or half-cut lines.
  • Diagonal score lines 80 and 82 integrally connect the side edge panel 40 and cover edge panel 72, and the side edge panel 42 and cover edge panel 74, respectively.
  • the container blank 10 is formed into a side seamed blank in the customary manner by firstly heating the outside surface of the side seam panel 26 and the inside surface of the edge zone (28) of the panel 18 to render them tacky. Secondly, the body panel 24 and the side seam flap 26 are rotated as a unit about the vertical score line 36, the inside surface of the body panel 24 coming into contact with the inside surface of the body panel 22, with the vertical score line 38 positioned next to the vertical score line 34, and with the inside surface of the side seam flap 26 contacting the inside surface of the body panel 20 adjacent the vertical score line 34. Simultaneously, the cover edge panel 74 is rotated about the score line 78 to come into contact with cover panel 44.
  • the body panel 18 is rotated about the vertical score line 32 to bring its inside surface into contact with the inside surface of the body panel 20.
  • the inside surface of the body panel 18 along the edge 28 comes into contact with the outside surface of the side seam flap 26, and the edge 28 is positioned parallel and aligned with the vertical score line 38.
  • the various members of the top end closure 12 and the bottom end closure will make similar movements.
  • the container blank 10 is sealed where the tacky inside area of the body panel 18 comes into contact with the tacky outside surface of the side seam flap 26.
  • the side seam panel 26 could be sealed to the outside surface of the adjacent panel 18, rather that to the inner surface thereof as described above.
  • the panels 18 and 24 form a right angle about the vertical score line 38, and the panels 20 and 22 form a right angle about the vertical score line 34.
  • the cover edge panel 72 assumes a right angle relationship with the cover panel 44 about the score line 76.
  • the body panel 22 to which the cover panel 44 is attached is not an end panel in the row of body panels 18 to 24, in fact the side seam panel 26 is located at the end body panel 24 of the blank, to be secured to the other end or front body panel 18. This is in contrast to the heretofore normal practice of having the side seam panel located at a rear corner, such as shown in US-A-4,397,415; 4,702,407; 4,784,272; and 4,911,305.
  • front corner side seam panel location may be appreciated by considering the manner in which the usual first and fifth, or side seam flap, panels are normally heated and sealed.
  • both outside edges are heated, as already mentioned. More specifically, the outside surface of the side seam flap 26 and the inside surface of the first or front panel 18 are heated while they travel through the flame sealer. Hence, if the rear panel 22 and the adjacent cover panel 44 were positioned as an end section, the cover panel 72 or 74 would also be heated. Once heated, it thereafter loses some of its effective sealing characteristic. Hence, being positioned at an intermediate location eliminates any heating of either of the cover edge panels 72 and 74 until they are finally heat-sealed, for example by ultrasonic sealing or high-frequency vibration sealing, in the condition shown in Figure 4, with the side seam flap 26 now positioned at a front corner.
  • the various parts of the eventual top end closure 12 are folded on the various score lines in the following manner so as to form the top end structure.
  • the front edge panel 46 is folded or bent inwardly on the score line 16a and outwardly about the score line 58, and then downwardly about the score line 60, resulting in the fold-out panel portion 56a engaging the fold-in panel segment 54, and the fold-down panel portion 56b engaging the upper end of the front body panel 18.
  • Such action will have caused the panel segment 51 to begin to bend along the diagonal score line 50 toward the side edge panel 40 and the panel segment 53 to begin to bend along the diagonal score line 52 toward the side edge panel 42.
  • the side edge panels 40 and 42 are next folded or bent inwardly toward each other and begin to pull the cover edge panels 72 and 74 inwardly. Finally, the cover panel 44 is folded or bent inwardly and downwardly, causing the cover edge panels 72 and 74 to fold onto the side edge panels 40 and 42, and the panel segments 51 and 53 to be pressed downwardly into engagement with the respective panels 40 and 42.
  • FIG. 4 illustrates the top end closure 12 structure once the sealing thereof has been effected. While the cover panel 44 is tightly sealed to the fold-out panel portion 56a, and to the cover edge panels 72 and 74 which, in turn, are sealed to the side edge panels 40 and 42, respectively, the lift tab 56b may be merely spot welded to the cover panel 44 as shown, or to the front body panel 18, for easy release therefrom.
  • the lift tab formed by the panel portion 56b is lifted from the cover panel 44 (or the front body panel 18) and torn back, pulling the panel portion 56a away from the panel segment 54 and breaking the arcuate weakened line 70.
  • the cover edge panels 72 and 74 are pulled away from the side edge panels 40 and 42.
  • the two fold-over panel segments 51 and 53 are partially pealed away from the panels 40 and 42, thus providing an open top for pouring the liquid contents over the arcuate edge 70.
  • cover edge panels 72 and 74 serve efficiently to control film delamination as the top cover panel 44 is torn back, and the cover edge panels 72 and 74 separate from the adjacent side edge panels 40 and 42, respectively, remaining with the cover panel 44.
  • Triangular extensions 84 and 86 are formed on the free edges of the cover edge panels 72 and 74, respectively, adjacent the distal ends thereof.
  • Triangular extensions 88 and 90 are formed on the free edges of the side edge panels 40 and 42, respectively, adjacent the fold-over panel segments 51 and 53, respectively.
  • a first rectangular extension 92 is formed on the free distal edge of the side seam flap extension panel 48.
  • a second rectangular extension 94 is formed on the free edge of the panel segment 54 adjacent one side of the fold-out portion 56a.
  • a third rectangular extension 96 is formed on the free edge of the panel segment 54 adjacent the other side of the fold-out portion 56a and fold-over panel segment 51. Cut lines 98 and 100 separate the second and third extensions 94 and 96 from the fold-out portion 56a.
  • the container blank 10' of Figure 6 is formed into the side seam blank of Figure 7 in the same manner as the side seam blank of Figure 2 is formed from the blank 10 of Figure 1.
  • the side seam blank is opened up into the tube shown in Figure 8, and the top closure is closed and sealed into the condition shown in Figure 9 in the following manner:
  • the side fold-in edge panels 40 and 42 are first folded inwardly, bending about the diagonal score lines 50 and 52, with the front fold-in panel segment 54 following on top thereof.
  • the cover edge panels 72 and 74 are first pulled inwardly by the initial folding of the side fold-in edge panels 40 and 42.
  • the cover panel 44 and the adjacent in-folded edge panels 72 and 74 are then folded onto the respective edge panels 54, 40 and 42, and the fold-out portion 56a of the segment 56.
  • the inside surfaces of the sealed top closure are shown. It is noted that the edges 51' and 96' of the segment 51 and the extension 96 are stepped relative to each other, as are the edges 53', 92' and 94' of the segment 53 and the extensions 92 and 94. As such, when sealed by a mandrel, represented as 100 in Figure 11, the panel 42 assumes a stepped-down character over the edges 53', 92' and 94', rather than having to bend abruptly over a three-high single step and thus being more prone to leakage. Similarly, the panel 40 assumes a stepped-down character over the edges 51' and 96'.
  • the face 102 of mandrel 100 is shaped to suit the inside final configuration of the sealed top closure.
  • the seepage prevention would be even more effective if the longitudinal edge 30 of the side seam panel 26 and the extension panel 48 were skived and hemmed, i.e., tapered and folded over to eliminate a free cut edge exposed to the liquid product and tending to soak up the same to produce undesirable bulging of the carton.
  • cover edge panels are connected to the sides of the cover panel and integrally connected to side edge panels by score lines and secured thereto such that film delamination is effectively controlled when the closure is being opened, with the cover edge panels separating from the side edge panels to provide a clean opening.
  • the top closure is substantially self-aligning and deterred from skewing during the forming and sealing operations.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
EP93300370A 1992-01-21 1993-01-20 Verpackung und Zuschnitt dafür Withdrawn EP0552928A1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US82286192A 1992-01-21 1992-01-21
US822861 1992-01-21
US83715092A 1992-02-19 1992-02-19
US837150 1992-02-19
US99198692A 1992-12-17 1992-12-17
US991986 1992-12-17

Publications (1)

Publication Number Publication Date
EP0552928A1 true EP0552928A1 (de) 1993-07-28

Family

ID=27420149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93300370A Withdrawn EP0552928A1 (de) 1992-01-21 1993-01-20 Verpackung und Zuschnitt dafür

Country Status (2)

Country Link
EP (1) EP0552928A1 (de)
JP (1) JPH068933A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4288553B2 (ja) 2000-07-25 2009-07-01 富士フイルム株式会社 カメラのストロボ装置
EP3689770B1 (de) 2019-01-30 2021-11-24 Braun GmbH Faltkarton und verpackungsverfahren

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281048A (en) * 1964-09-21 1966-10-25 Pop Design Consultants Of Cana Leak-proof carton
FR2131481A5 (de) * 1971-03-24 1972-11-10 Silver Stanley
US3958748A (en) * 1975-11-11 1976-05-25 The Procter & Gamble Company Reclosable carton
US3971506A (en) * 1974-11-27 1976-07-27 St. Regis Paper Company Tear open and relockable container
EP0119303A1 (de) * 1983-03-03 1984-09-26 Sanyo Kokusaku Pulp Co. Ltd. Bodenausbildung eines Papierbehälters für Flüssigkeiten
EP0124248A2 (de) * 1983-05-02 1984-11-07 Ex-Cell-O Corporation Behälter und Zuschnitt für dessen Herstellung
US5076439A (en) * 1990-12-31 1991-12-31 James River Corporation Of Virginia Carton having a barrier construction and method of making the same
US5086928A (en) * 1990-12-07 1992-02-11 Elopak Systems A.G. Flat top end closure for liquid containers
EP0471529A1 (de) * 1990-08-16 1992-02-19 Elopak Systems Ag Kartonbehälter mit flachem Gipfel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281048A (en) * 1964-09-21 1966-10-25 Pop Design Consultants Of Cana Leak-proof carton
FR2131481A5 (de) * 1971-03-24 1972-11-10 Silver Stanley
US3971506A (en) * 1974-11-27 1976-07-27 St. Regis Paper Company Tear open and relockable container
US3958748A (en) * 1975-11-11 1976-05-25 The Procter & Gamble Company Reclosable carton
EP0119303A1 (de) * 1983-03-03 1984-09-26 Sanyo Kokusaku Pulp Co. Ltd. Bodenausbildung eines Papierbehälters für Flüssigkeiten
EP0124248A2 (de) * 1983-05-02 1984-11-07 Ex-Cell-O Corporation Behälter und Zuschnitt für dessen Herstellung
EP0471529A1 (de) * 1990-08-16 1992-02-19 Elopak Systems Ag Kartonbehälter mit flachem Gipfel
US5086928A (en) * 1990-12-07 1992-02-11 Elopak Systems A.G. Flat top end closure for liquid containers
US5076439A (en) * 1990-12-31 1991-12-31 James River Corporation Of Virginia Carton having a barrier construction and method of making the same

Also Published As

Publication number Publication date
JPH068933A (ja) 1994-01-18

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