EP1657169B1 - Druckfeste Verpackung bei vertikalem Druck - Google Patents

Druckfeste Verpackung bei vertikalem Druck Download PDF

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Publication number
EP1657169B1
EP1657169B1 EP20050256856 EP05256856A EP1657169B1 EP 1657169 B1 EP1657169 B1 EP 1657169B1 EP 20050256856 EP20050256856 EP 20050256856 EP 05256856 A EP05256856 A EP 05256856A EP 1657169 B1 EP1657169 B1 EP 1657169B1
Authority
EP
European Patent Office
Prior art keywords
case
end closure
closure flap
blank
panel
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.)
Not-in-force
Application number
EP20050256856
Other languages
English (en)
French (fr)
Other versions
EP1657169A1 (de
EP1657169B8 (de
Inventor
Roy c/o Int. Paper Containers Foden (UK) Ltd.
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.)
Societe Normande de Carton Ondule SAS SNCO
Original Assignee
Societe Normande de Carton Ondule SAS SNCO
International Paper Containers (uk) Ltd
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 Societe Normande de Carton Ondule SAS SNCO, International Paper Containers (uk) Ltd filed Critical Societe Normande de Carton Ondule SAS SNCO
Publication of EP1657169A1 publication Critical patent/EP1657169A1/de
Application granted granted Critical
Publication of EP1657169B1 publication Critical patent/EP1657169B1/de
Publication of EP1657169B8 publication Critical patent/EP1657169B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/54—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing
    • B65D5/5405—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form
    • B65D5/541—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form the lines of weakness being provided in one or more closure flaps
    • 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
    • B65D5/0227—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 closures formed by inward folding of flaps and securing them by heat-sealing, by applying adhesive to the flaps or by staples
    • 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
    • B65D5/54—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing
    • B65D5/5405—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form
    • B65D5/542—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form the lines of weakness being provided in the container body

Definitions

  • This invention relates to packaging formed from foldable sheet materials such as cardboard, paperboard, corrugated board, plastics or the like.
  • packaging cases having improved compression resistance as measured for example in the standard BCT test (Box Compression Test).
  • Adequate vertical strength is an important consideration for transit packaging as it determines the number of cases that can be safely stacked on top of each other.
  • the packaging must be sufficiently strong and rigid so that none of the loads imposed on it are transmitted through the contents.
  • Undesirably heavy board grades may have to be used to ensure adequate strength, adding to the packaging material bulk, weight and cost. This is particularly so with packaging that is deliberately provided with lines of weakness delineating a tear-out or tear-off portion, which is removed to reveal the case contents for display and selection by customers, thereby converting the case between transit and display modes.
  • corner joint formed in many conventional case styles may be modified so as to contribute better to the case vertical compressive strength.
  • the improved strength is particularly, although not exclusively, useful in cases having tear-out portions for conversion between transit and display modes, or which otherwise include features that tend to weaken one or more of their vertical side panels.
  • the present invention provides, erected, part-erected or as a blank, a case formed from a blank of foldable sheet material, the blank comprising opposed ends secured in overlapping relation to form a tubular structure on erection, in which the overlap is present in an overlap region towards the centre of a vertical panel of the erected case, in which the rupturable lines of weakness surround the overlap region.
  • the case will differ from for example a conventional FEFCO 0201 standard case in having the overlapping blank ends towards the centre of a composite vertical panel, instead of at a corner.
  • the double thickness of material at the overlap has been found to provide increased vertical strength when moved away from the corner region.
  • the vertical crush strength of the panel is therefore not significantly compromised.
  • the degree of overlap may be varied to provide the required degree of reinforcement. At one extreme, the entire panel may form the overlap region so as to be formed from a double thickness of material. However, less material is used and often adequate strength can be obtained when the overlap is confined to the central region of the panel only.
  • the panel in which the overlap is formed carries a case end closure flap, preferably formed from separate parts carried by the opposed ends of the blank and which are brought together when the blank ends are secured together to form the tubular structure.
  • the end closure flap lies on the outside of the closed case (for example, where it is the longer flap for closing a rectangular 0201 case)
  • the separate closure flap parts may be overlapped and secured to form the end closure flap.
  • This overlap region in the end closure flap preferably lies outside the areas to which end closure flaps on the adjacent sides of the case are secured, so as to provide flat, uninterrupted areas for securing the inner and outer end closure flaps together.
  • Such a case is therefore readily machine erectable, with the end flaps for example secured using hot melt adhesive.
  • the panel in which the overlap is formed carries an end closure flap which lies on the inside of the closed case (e.g. the shorter closure flap of a rectangular 0201 case)
  • the separate parts of this end closure flap may lie adjacent to each other in the case end closures without overlapping, whereby the parts are substantially co-planar, and closure flaps on the adjacent case sides can readily be secured over the end closure flap parts.
  • Confronting regions of the of the end closure flap separate parts may comprise interengaging formations.
  • a blank of this form is again machine erectable, e.g. with its end closures secured by hot melt adhesive.
  • the interengaging formations provide a mechanical key between the parts, ensuring that they properly lock together to form the end closure flap as they are folded in, and/or improving the rigidity of the completed end closure and the strength of the case.
  • the confronting regions of the end closure flap parts are preferably offset from the junction between the overlying end closure flaps, so that an outer closure flap overlies the interengaging formations in the erected case. This provides the case with a better seal, as well as a potentially stronger adhesive bond between the various end closure flaps.
  • the confronting regions may be offset from the perpendicular plane through the vertical centreline of the panel formed by the overlapping blank ends.
  • the lines of weakness in the panel having the overlapping blank ends may extend into an adjacent end closure.
  • the lines of weakness may surround the end closure flap carried by the panel having the overlapping blank ends.
  • this end closure flap, the attached parts of the adjacent end closure flaps and that part of the vertical panel bounded by the line of weakness may be torn out as a unit, to open the case for display and/or selection of its contents.
  • the blank 10 shown in Figure 1 comprises a pair of longer vertical panels 12a, 12b and a first shorter vertical panel 14.
  • a second shorter vertical panel is formed in two portions 14a, 14b at opposite ends of the blank.
  • the panels 14a, 12a, 14, 12b and 14b are each folded at 90 degrees to the neighbouring panel(s) along crease lines 16, so that areas 18 of the panels 14a, 14b, delineated by the chain dotted lines 20a, 20b, overlap.
  • edge 22a coincides with line 20b and edge 22b coincides with line 20a and the overlap areas 18 may be secured together by hot melt adhesive or any other suitable means.
  • the blank is thus secured to form a tubular structure 30 as depicted in Figure 2.
  • the longer vertical panels 12a, 12b each carry upper 24 and lower 26 end closure flaps.
  • the shorter vertical panel 14 similarly carries upper 28 and lower 32 end closure flaps.
  • the vertical panel portion 14a carries an upper end closure flap part 28b and a lower end closure flap part 32a.
  • the vertical panel portion 14b at the opposite end of the blank carries upper 28a and lower 32b end closure flap parts.
  • the end closure flap parts 28a, 28b confront each other without overlapping, in the tubular structure 30.
  • the confronting regions of the flap parts 28a, 28b are formed as complementary wavy edges 34a, 34b which interdigitate as the vertical end panel parts 14a, 14b are secured in overlapping relationship.
  • the wavy edges 34 provide a mechanical key between the upper end closure flap parts 28a, 28b whilst allowing those parts to lie in the same plane.
  • the lower end closure flap parts 32a, 32b have non-overlapping, interdigitating wavy edges 36a, 36b which co-act in the same way as the edges 34a, 34b in the tubular structure 30 and in the erected case.
  • the wavy edges 34a, 34b and 36a, 36b are offset to opposite sides of the perpendicular plane extending vertically through the centre of the overlap region 18 (and hence vertically through the centre of the composite shorter vertical panel formed when the panel portions 14a, 14b are secured together).
  • the precise shape of the confronting edges 34a,b, 36a,b is not critical, and a wide variety of interlocking profiles, both regular and irregular, will serve to provide a mechanical key between the closure flap parts 28a, 28b; 32a, 32b.
  • Some additional and non-limiting examples are shown in Figures 2a - 2f. Indeed, where a mechanical key or interlock is not required, the confronting edges 34a,b, 36a,b can be straight. However, for brevity, these edges will be referred to in the following description as wavy edges.
  • the blank 10 includes lines of weakness having two parts 38a respectively in each upper end closure flap 24; two parts 38b along the fold lines between the flaps 24 and the long vertical panels 12a, 12b; parts 38c along the fold line between the respective upper end closure panel parts 28a, 28b and the short vertical panel portions 14a, 14b; parts 38d in the short vertical panel portions 14a, 14b; and finally parts 38e along the fold line between those panel portions and the lower end closure flap parts 32a, 32b.
  • Punch-out finger hole forming areas 40, 42 are provided at intervals along the lines of weakness.
  • the lines of weakness may comprise perforations and/or cuts in the blank.
  • the blank may be cut from stock material, perforated and/or creased on a flat bed or rotary cutter, in either a single or a two-pass operation.
  • the shorter lower end closure flaps 32, 32a, 32b of the tubular structure are folded inwardly through 90 degrees.
  • the longer lower end closure flaps 26 are then folded inwardly through 90 degrees and secured to the flaps 32, 32a, 32b by hot melt adhesive or other suitable means, to form the base end closure of the case.
  • the wavy edges 36a, 36b remain mechanically interlocked and the now inner flap portions 32a, 32b lie in the same plane so as to provide stable support and substantially uniform face contact/resistance for the now outer flaps 26 during the fastening/gluing operation.
  • the flap parts 32a, 32b are able to act as a single flap.
  • the mechanical interlock between the wavy edges 36a, 36b also helps to form a strong, stable base to the erected case.
  • the case is now as shown in Figure 3. Due to the offset of the wavy edges 36a, 36b away from the perpendicular plane through the vertical centreline of the composite panel 14a, 14b, the wavy edges 36a, 36b overlie one of the outer base closure flaps 26 (the right-hand one as shown in Figure 6), rather than spanning the distal edges of both outer base closure flaps 26. This provides a stronger, more stable and more leak-proof base structure.
  • one or more of the finger hole forming areas 40, 42 are punched out, allowing an end user to insert their fingers and tear out that portion of the case within the lines of weakness 38a-e. These run around the composite inner lid flap 28a, 28b, the attached portions of the outer lid flaps 24 and the attached part of the composite vertical end panel 14a, 14b.
  • the resulting opened display case 50 is shown Figure 6.
  • the blank 110 shown in Figure 7 is similar to the blank 10 of Figure 1, with analogous parts being indicated by similar references but with an additional "1" prefix.
  • one of the shorter vertical panels is formed as a composite by overlapped ends of the blank
  • one of the longer side panels is formed as a composite 112a, 112b, with an overlap area 118 delimited by chain dotted lines 120a, 120b. Because this overlap area does not coincide with the fastening areas on the inner (shorter) end closure flaps 128, 132 in the erected case (but instead lies between these fastening areas), there is no need to maintain the closure flap part 124a co-planar with the part 124b or the part 126a co-planar with the part 126b in order to form strong and stable end closures.
  • the confronting, interlocking edge features 34a, 34b, 36a, 36b of Figure 1 can therefore be omitted and instead the overlap area 118 can be continued upwardly and downwardly in the blank, into the composite outer (longer) end closure flaps 124a, 124b and 126a, 126b.
  • the punch out areas 42 are replaced by regions 144 which are removed prior to forming the blank into the tubular structure.
  • the invention improves the vertical crush resistance of a case by moving the overlap area, normally found along a vertical edge of the case, more towards the centre of one of the vertical panels, this panel therefore being formed as a composite panel with a preferably generally vertically extending overlap area at or towards its centre.
  • the additional thickness of the overlap area strengthens and stiffens the panel, and may be used to compensate for any reduction in vertical crush resistance that would otherwise arise e.g. from deliberately forming lines of weakness in and/or around the composite panel.
  • the corners of the case between adjacent vertical panels, where an overlap area is conventionally located, are inherently relatively stiff and strong, so moving the overlap area away from these areas is not particularly detrimental to the case vertical crushing strength.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Claims (9)

  1. Aus einem Zuschnitt (10) aus faltbarem flächigem Material gebildete Schachtel in Form einer aufgerichteten, teilaufgerichteten Schachtel oder als Zuschnitt, wobei der Zuschnitt (10) gegenüberliegende Enden aufweist, die in überlappender Beziehung befestigt werden, um beim Aufrichten eine rohrförmige Struktur (30) zu bilden, bei der die Überlappung (18, 118) in einer Überlappzone zur Mitte eines senkrechten Feldes (14a, 14b; 112a, 112b) der aufgerichteten Schachtel vorliegt, bei der die knickbaren Schwachlinien (38a, 38b, 38c, 38d, 38e; 138a, 138b, 138c, 138d, 138d', 138e) die Überlappzone umgeben, dadurch gekennzeichnet, dass das Feld, in dem die Überlappung (18, 118) gebildet ist, eine Schachtel-Verschlussklappe (28a, 28b; 32a, 32b; 124a, 124b; 126a, 126b) trägt.
  2. Schachtel nach Anspruch 1, bei der die Verschlussklappe aus getrennten Teilen (28a, 28b; 32a, 32b; 124a, 124b; 126a, 126b) gebildet ist, die von den gegenüberliegenden Enden des Zuschnitts getragen und die zusammengebracht werden, wenn die Zuschnittenden aneinander befestigt werden, um die rohrförmige Struktur (30) zu bilden.
  3. Schachtel nach Anspruch 2, bei der die Verschlussklappe auf der Außenseite der geschlossenen Schachtel liegt, wobei die getrennten Verschlussklappenteile (124a, 124b; 126a, 126b) überlappen und befestigt werden, um die Verschlussklappe zu bilden.
  4. Schachtel nach Anspruch 3, bei der die Überlappzone der Verschlussklappe (124a, 124b; 126a, 126b) außerhalb der Bereiche liegt, in denen die Verschlussklappen (128, 132) an benachbarten Seiten der Schachtel befestigt sind.
  5. Schachtel nach Anspruch 2, bei der die Verschlussklappe (28a, 28b; 32a, 32b) an der Innenseite der geschlossenen Schachtel liegt, wobei die getrennten Teile der Verschlussklappe (28a, 28b; 32a, 32b) ohne Überlappung bei den Schachtelverschlüssen nebeneinander liegen, wodurch die Teile im Wesentlichen in derselben Ebene liegen.
  6. Schachtel nach Anspruch 5, bei der einander gegenüberliegende Zonen der getrennten Teile der Verschlussklappen (28a, 28b; 32a, 32b) miteinander in Eingriff stehende Formen (34a, 34b; 36a, 36b) aufweisen.
  7. Schachtel nach Anspruch 5 oder 6, bei der die einander gegenüberliegenden Zonen der getrennten Teile der Verschlussklappen (28a, 28b; 32a, 32b) gegenüber der Verbindung zwischen übereinander liegenden Verschlussklappen versetzt sind.
  8. Schachtel nach einem der vorigen Ansprüche, bei der sich die Schwachlinien (38a, 138a) in einen benachbarten Verschluss (24; 128) erstrecken.
  9. Schachtel nach Anspruch 8, bei der die Schwachlinien (38a, 38b, 38c, 138a, 138b, 138c) die Verschlussklappe (28a, 28b; 124a, 124b) umgeben, die vom Feld mit den überlappenden Zuschnittenden getragen wird.
EP20050256856 2004-11-08 2005-11-04 Druckfeste Verpackung bei vertikalem Druck Not-in-force EP1657169B8 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0424627A GB2419872A (en) 2004-11-08 2004-11-08 Vertical crush resistant packaging

Publications (3)

Publication Number Publication Date
EP1657169A1 EP1657169A1 (de) 2006-05-17
EP1657169B1 true EP1657169B1 (de) 2007-01-17
EP1657169B8 EP1657169B8 (de) 2007-03-14

Family

ID=33523339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050256856 Not-in-force EP1657169B8 (de) 2004-11-08 2005-11-04 Druckfeste Verpackung bei vertikalem Druck

Country Status (4)

Country Link
EP (1) EP1657169B8 (de)
DE (1) DE602005000471D1 (de)
ES (1) ES2281060T3 (de)
GB (1) GB2419872A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11338974B2 (en) 2016-08-19 2022-05-24 Dow Global Technologies Llc Low stress packaging design to minimize pellet blocking

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5461953B2 (ja) * 2009-10-26 2014-04-02 菱江産業株式会社 プラスチックシート用切取線、これを備えたプラスチックシート及び包装ケース
JP2014097803A (ja) * 2012-11-13 2014-05-29 Japan Pack Kk スパウト付き包装用箱
JP6343731B1 (ja) * 2018-03-07 2018-06-13 大王パッケージ株式会社 箱用シート、箱用シートの製造方法及びトムソン型

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
GB1054234A (de) * 1964-01-17
US3747801A (en) * 1971-09-30 1973-07-24 E Graser Returnable wrap around
US3771714A (en) * 1972-04-10 1973-11-13 Container Corp Easy packing deep container
US3900158A (en) * 1973-10-26 1975-08-19 Int Paper Co Dispenser carton
US4447002A (en) * 1981-11-02 1984-05-08 The Mead Corporation Center special slotted containers having self-squaring joints
US4497433A (en) * 1982-09-03 1985-02-05 Rock-Tenn Company Combination food tray
US5065937A (en) * 1991-01-25 1991-11-19 Container Corporation Of America Container with end wall opening for handle access
US5108030A (en) * 1991-06-25 1992-04-28 Riverwood International Corporation Sleeve-type article carrier
US6189780B1 (en) * 2000-04-03 2001-02-20 Allen Kanter Display container having integral reinforcement
CA2418440A1 (en) * 2002-02-04 2003-08-04 Innovative Packaging Designs L.P. Stackable container having support flanges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11338974B2 (en) 2016-08-19 2022-05-24 Dow Global Technologies Llc Low stress packaging design to minimize pellet blocking

Also Published As

Publication number Publication date
GB0424627D0 (en) 2004-12-08
EP1657169A1 (de) 2006-05-17
DE602005000471D1 (de) 2007-03-08
GB2419872A (en) 2006-05-10
ES2281060T3 (es) 2007-09-16
EP1657169B8 (de) 2007-03-14

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