EP0423518A1 - Panel interlocking arrangement - Google Patents

Panel interlocking arrangement Download PDF

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Publication number
EP0423518A1
EP0423518A1 EP90118560A EP90118560A EP0423518A1 EP 0423518 A1 EP0423518 A1 EP 0423518A1 EP 90118560 A EP90118560 A EP 90118560A EP 90118560 A EP90118560 A EP 90118560A EP 0423518 A1 EP0423518 A1 EP 0423518A1
Authority
EP
European Patent Office
Prior art keywords
locking tab
locking
lateral edges
degrees
cutting
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.)
Granted
Application number
EP90118560A
Other languages
German (de)
French (fr)
Other versions
EP0423518B1 (en
Inventor
Philippe Marie
Rolf Mueller
John Hepworth
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.)
WestRock Packaging Systems LLC
Original Assignee
Mead 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
Priority claimed from GB878700777A external-priority patent/GB8700777D0/en
Priority claimed from GB878730160A external-priority patent/GB8730160D0/en
Application filed by Mead Corp filed Critical Mead Corp
Priority to AT90118560T priority Critical patent/ATE99628T1/en
Publication of EP0423518A1 publication Critical patent/EP0423518A1/en
Application granted granted Critical
Publication of EP0423518B1 publication Critical patent/EP0423518B1/en
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
    • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/06—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers
    • B65D71/12—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers the packaging elements, e.g. wrappers being formed by folding a single blank
    • B65D71/14—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers the packaging elements, e.g. wrappers being formed by folding a single blank having a tubular shape, e.g. tubular wrappers without end walls
    • 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
    • B65D5/4279—Joints, seams, leakproof joints or corners, special connections between panels
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00123—Bundling wrappers or trays
    • B65D2571/00129—Wrapper locking means
    • B65D2571/00135—Wrapper locking means integral with the wrapper
    • B65D2571/00154—Wrapper locking means integral with the wrapper interlocked
    • B65D2571/00185—Wrapper locking means integral with the wrapper interlocked by tabs cut within one end and facing away from the other end when blank is unfolded, and co-operting with openings at the other end
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00123—Bundling wrappers or trays
    • B65D2571/00648—Elements used to form the wrapper
    • B65D2571/00654—Blanks
    • B65D2571/0066—Blanks formed from one single sheet
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00123—Bundling wrappers or trays
    • B65D2571/00709—Shape of the formed wrapper, i.e. shape of each formed element if the wrapper is made from more than one element
    • B65D2571/00716—Shape of the formed wrapper, i.e. shape of each formed element if the wrapper is made from more than one element tubular without end walls
    • 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
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00123—Bundling wrappers or trays
    • B65D2571/00833—Other details of wrappers
    • B65D2571/00913—Other details of wrappers for accommodating articles of varying size

Definitions

  • This invention relates to a panel interlocking arrangement and to cartons, particularly foldable wrappers, having such interlocking means.
  • Known wrappers often comprise a blank which has a top wall panel, two side wall panels and two base panels hinged together by means of fold lines, one base panel having locking tabs which can be folded up from said one base panel for engagement in associated openings of the other base flap portion, the locking tabs then being supported in position by retaining tabs which are folded up from the edges of the openings.
  • the articles which are to be packaged with such foldable wrappers usually have in fact approximately the same dimensions.
  • the dimensional tolerances of the articles which arise within an individual package are relatively high. This applies especially to multi-way bottles, because numerous types of bottles whose dimensions are in fact similar but not absolutely identical, are in circulation. Manufacturing tolerances are not the only reason for this, but in particular there is also the fact that there has not been hitherto an adequate standardisation for bottle dimensions. Even after the introduction of a standard for the dimensions of bottles, bottles which differ from this standard and which have to be packaged with foldable wrappers are still in circulation.
  • an adjustable locking tab includes a plurality of deformable marginal portions defined by successive cut lines in the marginal edge portions of the locking tab. These deformable edge portions are selectively deformed by engagement of the tab with lateral edges of a cooperating locking aperture at a location dependent upon the extent to which the locking tab is driven into the locking aperture, whereby the locking tab may be locked in a plurality of different positions.
  • One aspect of the present invention provides, in panel interlocking means for securing together a pair of panels in overlapping relationship comprising a locking tab struck from one of said panels and an elongate locking aperture provided in the other said panels and arranged to receive and retain said locking tab, said locking tab being hinged to said one panel at a base of the locking tab and having opposed lateral edges, said locking aperture comprising spaced lateral edges which are generally aligned with the lateral edges of said locking tab when the locking tab is engaged; within the locking aperture, a locking tab which has at least one lateral edge formed with a plurality of deformable marginal portions which selectively are deformed by engagement with the lateral edges of the locking aperture at a location dependent upon the extent to which said locking tab is driven into said locking aperture whereby said locking tab may be locked in the locking aperture in a plurality of selected positions, characterized in that said deformable marginal portions are defined by a succession of cut lines each of which has a first portion which meets its associated lateral edge of the locking tab at an angle of substantially 90 degrees and
  • Another aspect of the invention provides a die cutting rule arrangement for forming a locking tab according to either of the two immediately preceding paragraphs comprises a single cutting rule to cut the outline periphery of said locking tab and a succession of spaced transverse cutting rules extending between opposed lateral edges of said peripheral cutting rule each of said transverse rules having a cutting edge at at least one of its lateral extremities which cutting edge has a first portion which meets the adjacent cutting edge of said peripheral rule at an angle of substantially 90 degrees and a second portion inclined with respect to said first portion.
  • the locking tab "T” has lateral edges E1 and E2, marginal portions of each of which are formed with a succession of cut lines C1 and C2 respectively.
  • Each cut line has a first portion P1 which meets the associated lateral edge of the tab at an angle of 90 degrees and a second contiguous portion P2 which is directed towards the hinged base 'B' of the tab at an angle which is greater than 90 degrees with respect to the first portion.
  • the angle 'a' subtended between the first and second portions of each cut line is substantially 135 degrees.
  • the first portions are parallel to the hinged base whereas the second portions are convergent towards the base of the tab.
  • cutting rule R3 is formed for each pair of aligned marginal cut lines adjacent the opposed lateral edges of the lock.
  • cutting rule R3 has opposed cutting edges e1 and e2 which meet the main peripheral rule R4 at substantially 90 degrees thereby allowing the cutting edges of rules R3 and R4 to mate correctly at their adjoining faces.
  • the central portion of the cutting rule R3 is recessed at Pc so that no cut is made across the central portion of the locking tab.
  • the cutting rule R3 is formed with a slot 'S' extending from the end thereof opposite its cutting edges centrally of the rule which receives a ridge portion Rp of the die cutting plate P1 when the rule is embedded in the plate.
  • the rule P3 is of inherently strong configuration and the central plate ridge enhances the rigidity of the fixture of the rule in a die cutting plate. It is envisaged that locking tabs may be required which have marginal cut lines along only one of its lateral edges in which case the recessed portion Pc of the rule, is extended to eliminate one of its cutting edges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Finishing Walls (AREA)
  • Packages (AREA)

Abstract

Panel interlocking means for securing together a pair of panels in overlapping relationship includes a locking tab (T) struck from one of the panels and arranged to be driven through a locking aperture struck from the other panel. The opposed lateral edges (E1,E2) of the locking tab have deformable marginal portions formed by cut lines (C1,C2) which comprise angularly related portions (P1,P2) of which one portion (P) meets its associated lateral edge of the locking tab at an angle of substantially 90 degrees.

Description

  • This invention relates to a panel interlocking arrangement and to cartons, particularly foldable wrappers, having such interlocking means. Known wrappers often comprise a blank which has a top wall panel, two side wall panels and two base panels hinged together by means of fold lines, one base panel having locking tabs which can be folded up from said one base panel for engagement in associated openings of the other base flap portion, the locking tabs then being supported in position by retaining tabs which are folded up from the edges of the openings.
  • The articles which are to be packaged with such foldable wrappers usually have in fact approximately the same dimensions. In practice however, the dimensional tolerances of the articles which arise within an individual package are relatively high. This applies especially to multi-way bottles, because numerous types of bottles whose dimensions are in fact similar but not absolutely identical, are in circulation. Manufacturing tolerances are not the only reason for this, but in particular there is also the fact that there has not been hitherto an adequate standardisation for bottle dimensions. Even after the introduction of a standard for the dimensions of bottles, bottles which differ from this standard and which have to be packaged with foldable wrappers are still in circulation.
  • In our co-pending European Patent Application E-A-0 275 200 a panel interlocking arrangement for cartons is described and claimed. In this interlocking arrangement, an adjustable locking tab includes a plurality of deformable marginal portions defined by successive cut lines in the marginal edge portions of the locking tab. These deformable edge portions are selectively deformed by engagement of the tab with lateral edges of a cooperating locking aperture at a location dependent upon the extent to which the locking tab is driven into the locking aperture, whereby the locking tab may be locked in a plurality of different positions.
  • However, it has been found that difficulties have arisen in the production of a satisfactory die cutting rule arrangement for forming the locking tab described above and further attention was necessary to determine the form of the successive cut lines.
  • One aspect of the present invention provides, in panel interlocking means for securing together a pair of panels in overlapping relationship comprising a locking tab struck from one of said panels and an elongate locking aperture provided in the other said panels and arranged to receive and retain said locking tab, said locking tab being hinged to said one panel at a base of the locking tab and having opposed lateral edges, said locking aperture comprising spaced lateral edges which are generally aligned with the lateral edges of said locking tab when the locking tab is engaged; within the locking aperture, a locking tab which has at least one lateral edge formed with a plurality of deformable marginal portions which selectively are deformed by engagement with the lateral edges of the locking aperture at a location dependent upon the extent to which said locking tab is driven into said locking aperture whereby said locking tab may be locked in the locking aperture in a plurality of selected positions, characterized in that said deformable marginal portions are defined by a succession of cut lines each of which has a first portion which meets its associated lateral edge of the locking tab at an angle of substantially 90 degrees and has a second portion contiguous therewith which is directed towards said base of the locking tab at an angle greater than 90 degrees with respect to said first portion. According to a feature of the aspect of the invention the angle subtended between the first and second portions of each of said cut lines may be substantially 135 degrees.
  • Another aspect of the invention provides a die cutting rule arrangement for forming a locking tab according to either of the two immediately preceding paragraphs comprises a single cutting rule to cut the outline periphery of said locking tab and a succession of spaced transverse cutting rules extending between opposed lateral edges of said peripheral cutting rule each of said transverse rules having a cutting edge at at least one of its lateral extremities which cutting edge has a first portion which meets the adjacent cutting edge of said peripheral rule at an angle of substantially 90 degrees and a second portion inclined with respect to said first portion.
  • An embodiment of each aspect of the invention wil now be described, by way of example, with reference to the accompanying drawings, in which:-
    • Figure 1 is a schematic view of a locking tab having marginal edge cut lines according to the invention, and
    • Figures 2 and 3 are schematic plan and cross-sectional views respectively of a die-cutting rule arrangment for the locking tab illustrated in Figure 1 in which Figure 3 is a view along the line 3-3 in Figure 2.
  • Referring to Figure 1, the locking tab "T" has lateral edges E1 and E2, marginal portions of each of which are formed with a succession of cut lines C1 and C2 respectively. Each cut line has a first portion P1 which meets the associated lateral edge of the tab at an angle of 90 degrees and a second contiguous portion P2 which is directed towards the hinged base 'B' of the tab at an angle which is greater than 90 degrees with respect to the first portion. In the arrangement shown, the angle 'a' subtended between the first and second portions of each cut line is substantially 135 degrees. Thus, the first portions are parallel to the hinged base whereas the second portions are convergent towards the base of the tab.
  • Referring now to figures 2 and 3, a single cutting rule R3 is formed for each pair of aligned marginal cut lines adjacent the opposed lateral edges of the lock. Thus, cutting rule R3 has opposed cutting edges e1 and e2 which meet the main peripheral rule R4 at substantially 90 degrees thereby allowing the cutting edges of rules R3 and R4 to mate correctly at their adjoining faces. The central portion of the cutting rule R3 is recessed at Pc so that no cut is made across the central portion of the locking tab. The cutting rule R3 is formed with a slot 'S' extending from the end thereof opposite its cutting edges centrally of the rule which receives a ridge portion Rp of the die cutting plate P1 when the rule is embedded in the plate. Thus, the rule P3 is of inherently strong configuration and the central plate ridge enhances the rigidity of the fixture of the rule in a die cutting plate. It is envisaged that locking tabs may be required which have marginal cut lines along only one of its lateral edges in which case the recessed portion Pc of the rule, is extended to eliminate one of its cutting edges.

Claims (3)

1. In panel interlocking means for securing together a pair of panels in overlapping relationship comprising a locking tab struck from one of said panels and an elongate locking aperture provided in the other of said panels and arranged to receive and retain said locking tab, said locking tab being hinged to said one panel at a base and having opposed lateral edges, said locking aperture comprising spaced lateral edges which are generally aligned with the lateral edges of said locking tab when the locking tab is engaged within the locking aperture, a locking tab (T) which has at least one lateral edge (E1,E2) formed with a plurality of deformable marginal portions (C1,C2) which selectively are deformed by engagement with the lateral edges of the locking aperture at a location dependent upon the extent to which said locking tab is driven into said locking aperture whereby said locking tab may be locked in the locking aperture in a plurality of selected positions, characterized in that said deformable marginal portions are defined by a succession of cut lines each of which has a first portion (P1) which meets its associated lateral edge of the locking tab at an angle of substantially 90 degrees and has a second portion (P2) contiguous therewith which is directed towards said base (B) of the locking tab at an angle greater than 90 degrees with respect to said first portion.
2. A locking tab according to Claim 1, further characterized in that the angle subtended between the first and second portions of each of said cut lines is substantially 135 degrees.
3. A die cutting rule arrangement for forming a locking tab according to Claim 1 comprises a single cutting rule (R4) to cut the outline periphery of said locking tab and a succession of spaced transverse cutting rules (R3) extending between opposed lateral edges of said peripheral cutting rule each of said transverse rules having a cutting edge at at least one of its lateral extremities which cutting edge (e1,e2) has a first portion which meets the adjacent cutting edge of said peripheral rule at an angle of substantially 90 degrees and a second portion inclined with respect to said first portion.
EP19900118560 1987-01-14 1988-01-13 Panel interlocking arrangement Expired - Lifetime EP0423518B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90118560T ATE99628T1 (en) 1987-01-14 1990-07-27 DEVICE FOR INTERLOCKING PANELS.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8700777 1987-01-14
GB878700777A GB8700777D0 (en) 1987-01-14 1987-01-14 Panel interlocking arrangement
GB878730160A GB8730160D0 (en) 1987-12-24 1987-12-24 Carton locking tab & cutting rule arrangement for forming tab
GB8730160 1987-12-24

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP88300277.6 Division 1988-01-13

Publications (2)

Publication Number Publication Date
EP0423518A1 true EP0423518A1 (en) 1991-04-24
EP0423518B1 EP0423518B1 (en) 1994-01-05

Family

ID=26291786

Family Applications (3)

Application Number Title Priority Date Filing Date
EP19900118560 Expired - Lifetime EP0423518B1 (en) 1987-01-14 1988-01-13 Panel interlocking arrangement
EP19880300277 Expired EP0275200B1 (en) 1987-01-14 1988-01-13 Panel interlocking arrangement
EP88201658A Withdrawn EP0311156A3 (en) 1987-01-14 1988-01-13 Panel interlocking arrangement

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP19880300277 Expired EP0275200B1 (en) 1987-01-14 1988-01-13 Panel interlocking arrangement
EP88201658A Withdrawn EP0311156A3 (en) 1987-01-14 1988-01-13 Panel interlocking arrangement

Country Status (4)

Country Link
EP (3) EP0423518B1 (en)
DE (2) DE3886954T2 (en)
ES (2) ES2026646T3 (en)
RU (1) RU2061634C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9005611D0 (en) * 1990-03-13 1990-05-09 Mead Corp Two positions punch lock for cartons
GB2255041B (en) * 1991-04-24 1995-04-19 British Gas Plc Polyolefin coupler for joining polyolefin pipes
GB9221130D0 (en) * 1992-10-07 1992-11-18 Riverwood Int Ltd An interlocking arrangement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418158A1 (en) * 1978-02-23 1979-09-21 Mead Corp Package assembled from cardboard blank - has adjacent parts locked together by cooperating tongues and openings with flaps
FR2419229A1 (en) * 1978-03-11 1979-10-05 Mead Corp FOLDABLE ENVELOPE FOR SEVERAL OBJECTS ARRANGED IN A ROW AND DEVICE FOR MAKING SUCH AN ENVELOPE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418158A1 (en) * 1978-02-23 1979-09-21 Mead Corp Package assembled from cardboard blank - has adjacent parts locked together by cooperating tongues and openings with flaps
FR2419229A1 (en) * 1978-03-11 1979-10-05 Mead Corp FOLDABLE ENVELOPE FOR SEVERAL OBJECTS ARRANGED IN A ROW AND DEVICE FOR MAKING SUCH AN ENVELOPE

Also Published As

Publication number Publication date
ES2026646T3 (en) 1992-05-01
EP0275200B1 (en) 1991-10-23
EP0275200A2 (en) 1988-07-20
DE3886954T2 (en) 1994-05-11
DE3865681D1 (en) 1991-11-28
EP0311156A3 (en) 1989-07-19
EP0311156A2 (en) 1989-04-12
ES2047794T3 (en) 1994-03-01
DE3886954D1 (en) 1994-02-17
RU2061634C1 (en) 1996-06-10
EP0423518B1 (en) 1994-01-05
EP0275200A3 (en) 1989-07-19

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