EP0408831A1 - Leicht zu öffnender Deckel für Verpackungen, insbesondere Getränkedosen - Google Patents

Leicht zu öffnender Deckel für Verpackungen, insbesondere Getränkedosen Download PDF

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Publication number
EP0408831A1
EP0408831A1 EP90105174A EP90105174A EP0408831A1 EP 0408831 A1 EP0408831 A1 EP 0408831A1 EP 90105174 A EP90105174 A EP 90105174A EP 90105174 A EP90105174 A EP 90105174A EP 0408831 A1 EP0408831 A1 EP 0408831A1
Authority
EP
European Patent Office
Prior art keywords
lid
layer
lid according
scoring
area
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Withdrawn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
EP90105174A
Other languages
German (de)
English (en)
French (fr)
Inventor
Georg Dr. Bolte
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.)
Bolte Georg Dr
Original Assignee
Schmalback Lubeca 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 Schmalback Lubeca AG filed Critical Schmalback Lubeca AG
Publication of EP0408831A1 publication Critical patent/EP0408831A1/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Withdrawn legal-status Critical Current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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2091—Lines of weakness or apertures in cover

Definitions

  • the invention relates to an easy-to-open lid for packaging, in particular beverage cans, with the features of the preamble of claim 1.
  • the lids are made of sheet metal and either have a tear-open area delimited by a score line with a grip tab, with the aid of which a pouring or drinking opening is exposed by tearing open.
  • tear-open covers are also known which have a pre-punched opening which is then sealed from the inside and / or outside, but can be torn open.
  • Plastic masses or composite foils are used for sealing, which are glued to the edge of the pre-punched opening.
  • the latter covers are characterized by a relatively low opening resistance, so that the opening process is made considerably easier. This is of great advantage for the handling of cans sealed with such lids by children or women.
  • the lids with a pre-punched opening have in some cases not proven to be sufficiently resilient, since they, especially with alternating loads, e.g. Changes in temperature and / or pressure that can leak.
  • the selection of the material for the layers of the layer material that absorb the loads is also simplified to the extent that the question of breaking through or tearing through this layer of material no longer plays a role.
  • the materials for these layers can therefore be selected from the point of view of cost and strength and the ability to withstand alternating loads.
  • the new lid is suitable for opening to the outside with the help of a grip tab and folding over the tear area on the outer surface of the lid.
  • the lid can be designed as a lid which can be opened by being pressed in, in which the region exposing the opening is pressed into the interior of the can and folded over.
  • the lid is suitable for two or three-piece cans.
  • the can 1 consists of a deep-drawn and ironed aluminum or steel sheet.
  • the lid 3 can be sealed and permanently connected to the body 2 of the container in any manner, in particular also, as shown, via a double seam 4.
  • the container axis is designated 6.
  • the lid according to FIG. 2 it is assumed that it has two indentation areas, namely an indentation area 8 for ventilating containers under excess or negative pressure and an area 9 for exposing a pouring opening.
  • the lid has an edge flange 4 for connection to the body 2 of the container 1.
  • the two indentation areas 8 and 9 are provided in the cover mirror 7 in alignment along a diameter.
  • Each indentation area is delimited by two scored or notch lines 13/14 and 17/18 running parallel to each other at a predetermined mutual distance.
  • the notch or scoring lines 13, 14 are not only not in mutual alignment but are also incorporated into the material of the cover mirror 7 from opposite sides of the cover.
  • the indentation area used for ventilation which is delimited by two notch or scoring lines 17, 18 of smaller dimensions.
  • the press-in areas have projections 12 or 16, which correspond to the opening of the container with the finger or the thumb appropriate pressure can be exerted.
  • these areas remain integrally connected to the lid mirror 7 via bending lines 15 and 19, which are preferably smaller at the end of one area 11 than the other area 10 Width are provided.
  • the lid consists of a composite or layer material 20. This has at least three layers, as shown in FIG. 3.
  • the two outer layers 21 and 22 are made of a material of sufficient strength to be able to safely absorb any increased internal pressure in the container or the loads occurring when the containers are stacked, as well as changes in load occurring due to temperature and / or pressure changes.
  • the two layers 21 and 22 are connected to one another via a middle layer 23.
  • This third layer 23 can consist of a plastic with high adhesion to the layers 21, 22, the cohesive force of which is however limited to a predetermined value, so that when shear forces occur in the area 27 between the two score lines 13, 14 or 17/18 Tear open plastic layer.
  • the layer 23 can, however, also consist of a material of high cohesive force and tear resistance if it is ensured that the adhesive force between this layer 23 and one of the adjacent layers 21, 22 is limited to a predetermined value. Instead of a plastic layer, however, it is also possible to use an adhesive or similar adhesive layer with a predetermined adhesive force.
  • the composite material can also consist of more than three layers, provided that the condition of claim 1 is met.
  • the required breaking force can be influenced to a large extent by the choice of the material for the layer 23.
  • Another way of influencing is to vary the mutual distance 27 between the score lines. Generally, this distance should be between 0.1 and 8 mm, preferably between 2 and 6 mm. It may be expedient to provide a narrowly delimited area on the circumference of the indentation area, which serves to initially break in when opening. In this area, the distance 27 between the score lines 13, 14 can be chosen to be smaller than in the other areas.
  • the outer surface and the inner surface of the cover are expediently provided, at least in the region of the notch lines, with a protective layer, such as a lacquer layer, which also fills and covers the notch lines, as is indicated in FIG. 3 at 25.
  • a protective layer such as a lacquer layer
  • a material is preferred in which the load-bearing layers 21, 22 are made of metal, e.g. Aluminum, steel or tinplate exist.
  • a layer 23 made of a material based on polyethylene and / or polypropylene can be used to connect the load-bearing layers.
  • the ventilation area is first pressed in by pressing on the projecting area 16.
  • the other indentation area 9 is then exposed by pressure on the projecting area 12, as illustrated in FIGS. 4 and 5. It can be seen from FIG. 5 that none of the load-bearing layers 21, 22 is broken or torn open when opened. Rather, the opening process takes place by splitting the connecting layer 23 or by detaching this layer from one of the two adjacent layers.
  • the opening edges 14a, 13b and the edges 13a, 14b of the indentation clearly show the gradation that arises here.
  • the break-in resistance can also be influenced by the geometric shape of the scribe lines or score lines.
  • the opening area 29 of the cover 30 is in turn delimited by two notch lines 36, 37 arranged at a mutual distance in the radial direction, which from opposite sides in the lid material is embossed, to the extent that the middle layer 33 of the lid material lying between the outer layer 31 and the inner layer 32 is not damaged.
  • the opening area is preferably located in an outer recess or recess 34 in the cover, the dimensions of which are larger than the dimensions of the opening area.
  • the opening area is covered from the outside by a tab 40 with a grip section 42.
  • the edge area of the tab 40 is, with the exception of the grip section 42, along a self-contained strip area 43 with the outer layer 31 of the lid material, e.g. sealed and firmly connected by sealing.
  • the tab 40 can consist of a simple material or a composite material, as shown.
  • the tab 40 has a line of weakness which merges into the longitudinal edges of the handle section 42 from both sides.
  • the grip section 42 crosses the sealing area 43 and is peelably connected to the cover 30 in this crossing area. This can be done in that the sealing adhesive force in zone 43 is correspondingly reduced in the region of the intersection.
  • the crossing region is preferably provided by a score line which is embossed into the inner layer of the tab body made of composite material and which is designated by 44 and which enables the region of the inner layer of the tab body 40 delimited by the score line 44 to differ from the other layers of the Tab body 40 peels off and remains firmly connected to the cover 30.
  • the adhesive force between the inner layer and the next layer of the tab body 40 is correspondingly lower than the seal adhesive force in the crossing area.
  • the tab 40 can be separated from the sealing zone 43 with the aid of the grip section 42, so that the opening area 29 underneath is free. As in the exemplary embodiment described above, this can now be brought to break in by pressure from the outside and pivoted inwards.
  • the tab 40 is preferably also permanently connected to the opening area 29 in the area within the radially outer score line 37 of the outer layer 31 of the cover 30, so that when the tab 40 is torn open with the aid of the handle section 42, the opening area also 29 is also separated from the lid, in a manner similar to that described with reference to the embodiment according to FIGS. 2 to 5. It should be noted that in this case the radially outer score line 37 from the outside and the radially inner score line 36 from the inside into the composite Material of the lid 30 is introduced.
  • a tab 40a could also be permanently and firmly connected to the opening area 29 over the entire area or via the sealing zone 46a, with the exception of the handle section 42a. In this case, the tab 40a only serves to reinforce the opening area and to facilitate opening to the outside.
  • the sealing connection 46 or 46a between the tab and the opening area 29 extends at least at the level of the handle section 42, 42a to close to the outer notch line 37, preferably over the entire circumferential length of the notch line 37.
  • the score line 41 of the tab 40 can be interrupted in an area 41a opposite the grip section 42, so that the tab 40 and the opening area 29 firmly connected therewith remain firmly connected to the cover material 30 after the opening has been exposed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
EP90105174A 1989-07-18 1990-03-20 Leicht zu öffnender Deckel für Verpackungen, insbesondere Getränkedosen Withdrawn EP0408831A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3923772A DE3923772A1 (de) 1989-07-18 1989-07-18 Leicht zu oeffnender deckel fuer getraenkedosen
DE3923772 1989-07-18

Publications (1)

Publication Number Publication Date
EP0408831A1 true EP0408831A1 (de) 1991-01-23

Family

ID=6385304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105174A Withdrawn EP0408831A1 (de) 1989-07-18 1990-03-20 Leicht zu öffnender Deckel für Verpackungen, insbesondere Getränkedosen

Country Status (2)

Country Link
EP (1) EP0408831A1 (pl)
DE (2) DE3923772A1 (pl)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994021532A1 (en) * 1993-03-15 1994-09-29 Sonoco Products Company Easy-opening composite closure
WO1995013219A2 (en) * 1993-11-10 1995-05-18 Suntenmaartensdijk Bernardus J Container comprising a double score line
FR2745993A1 (fr) * 1996-03-15 1997-09-19 Itey Frederic Support-presentoir pour gateaux
ES2133108A1 (es) * 1997-07-21 1999-08-16 Itey Frederich Soporte expositor para pasteles.
EP2243716A1 (en) * 2004-06-11 2010-10-27 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature, and method for making same
US20130064934A1 (en) * 2007-03-30 2013-03-14 Carole A. Vogt Package Integrity Indicating Closure
US8722122B2 (en) 2006-05-23 2014-05-13 Intercontinental Great Brands Llc Package integrity indicator for container closure
US8746483B2 (en) 2006-05-23 2014-06-10 Intercontinental Great Brands Llc Tamper evident resealable closure
US8889205B2 (en) 2006-12-27 2014-11-18 Intercontinental Great Brands Llc Resealable closure with package integrity feature
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
US9205967B2 (en) 2010-01-26 2015-12-08 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9221590B2 (en) 2010-03-23 2015-12-29 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9630761B2 (en) 2008-10-20 2017-04-25 Mondelez UK Holding & Services Limited Packaging
US9656783B2 (en) 2010-05-18 2017-05-23 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US9688442B2 (en) 2011-03-17 2017-06-27 Intercontinental Great Brands Llc Reclosable flexible film packaging products and methods of manufacture
US9708104B2 (en) 2010-05-18 2017-07-18 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US10118741B2 (en) 2008-07-24 2018-11-06 Deborah Lyzenga Package integrity indicating closure
US10493688B2 (en) 2008-03-06 2019-12-03 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US10773451B2 (en) 2008-03-06 2020-09-15 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US11807438B2 (en) 2005-04-05 2023-11-07 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246791A (en) * 1963-08-12 1966-04-19 Charles T Asbury Can-opening arrangement
US3388824A (en) * 1964-09-14 1968-06-18 Continental Can Co Laminated easy opening end for cans
FR2156727A1 (pl) * 1971-10-19 1973-06-01 Aluminum Co Of America
US3933297A (en) * 1973-02-20 1976-01-20 Tetra Pak Developpement Sa Packing container
GB1497169A (en) * 1975-09-10 1978-01-05 Klein G Sealing arrangement for pushdown gate in a can lid
US4126244A (en) * 1977-08-30 1978-11-21 Owens-Illinois, Inc. Container component with easy-opening wall section
EP0039939A1 (de) * 1980-05-12 1981-11-18 Federal Paper Board Co. Inc. Schalenförmiger Behälter
EP0094359A2 (en) * 1982-05-10 1983-11-16 AB Akerlund & Rausing A container closure
FR2585986A2 (fr) * 1981-04-01 1987-02-13 Erca Bande composite a couvercles pour recipients thermoplastiques et procede, dispositif et installation de fabrication d'une telle bande composite

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246791A (en) * 1963-08-12 1966-04-19 Charles T Asbury Can-opening arrangement
US3388824A (en) * 1964-09-14 1968-06-18 Continental Can Co Laminated easy opening end for cans
FR2156727A1 (pl) * 1971-10-19 1973-06-01 Aluminum Co Of America
US3933297A (en) * 1973-02-20 1976-01-20 Tetra Pak Developpement Sa Packing container
GB1497169A (en) * 1975-09-10 1978-01-05 Klein G Sealing arrangement for pushdown gate in a can lid
US4126244A (en) * 1977-08-30 1978-11-21 Owens-Illinois, Inc. Container component with easy-opening wall section
EP0039939A1 (de) * 1980-05-12 1981-11-18 Federal Paper Board Co. Inc. Schalenförmiger Behälter
FR2585986A2 (fr) * 1981-04-01 1987-02-13 Erca Bande composite a couvercles pour recipients thermoplastiques et procede, dispositif et installation de fabrication d'une telle bande composite
EP0094359A2 (en) * 1982-05-10 1983-11-16 AB Akerlund & Rausing A container closure

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994021532A1 (en) * 1993-03-15 1994-09-29 Sonoco Products Company Easy-opening composite closure
WO1995013219A2 (en) * 1993-11-10 1995-05-18 Suntenmaartensdijk Bernardus J Container comprising a double score line
WO1995013219A3 (en) * 1993-11-10 1995-06-15 Suntenmaartensdijk Bernardus J Container comprising a double score line
FR2745993A1 (fr) * 1996-03-15 1997-09-19 Itey Frederic Support-presentoir pour gateaux
ES2133108A1 (es) * 1997-07-21 1999-08-16 Itey Frederich Soporte expositor para pasteles.
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
EP2243716A1 (en) * 2004-06-11 2010-10-27 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature, and method for making same
US8262830B2 (en) 2004-06-11 2012-09-11 Sonoco Development, Inc. Method for making a flexible packaging structure with a built-in opening and reclose feature
US8262832B2 (en) 2004-06-11 2012-09-11 Sonoco Development, Inc. Method for making a flexible packaging structure with a built-in opening and reclose feature
US10543970B2 (en) 2004-06-11 2020-01-28 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature
US11192704B2 (en) 2004-06-11 2021-12-07 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature
US11338977B2 (en) 2004-06-11 2022-05-24 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature
US11807438B2 (en) 2005-04-05 2023-11-07 Sonoco Development, Inc. Flexible packaging structure with a built-in opening and reclose feature
US8951591B2 (en) 2006-05-23 2015-02-10 Intercontinental Great Brands Llc Package integrity indicator for container closure
US8746483B2 (en) 2006-05-23 2014-06-10 Intercontinental Great Brands Llc Tamper evident resealable closure
US9663282B2 (en) 2006-05-23 2017-05-30 International Great Rapids LLC Package integrity indicator for container closure
US8722122B2 (en) 2006-05-23 2014-05-13 Intercontinental Great Brands Llc Package integrity indicator for container closure
US8889205B2 (en) 2006-12-27 2014-11-18 Intercontinental Great Brands Llc Resealable closure with package integrity feature
US9187228B2 (en) * 2007-03-30 2015-11-17 Intercontinental Great Brands Llc Package integrity indicating closure
US9919855B2 (en) 2007-03-30 2018-03-20 Intercontinental Great Brands Llc Package integrity indicating closure
US10829285B2 (en) 2007-03-30 2020-11-10 Intercontinental Great Brands Llc Package integrity indicating closure
US20130064934A1 (en) * 2007-03-30 2013-03-14 Carole A. Vogt Package Integrity Indicating Closure
US10773451B2 (en) 2008-03-06 2020-09-15 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US11148348B2 (en) 2008-03-06 2021-10-19 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US10493688B2 (en) 2008-03-06 2019-12-03 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US11858195B2 (en) 2008-03-06 2024-01-02 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US10773452B2 (en) 2008-03-06 2020-09-15 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US11613066B2 (en) 2008-03-06 2023-03-28 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US11511477B2 (en) 2008-03-06 2022-11-29 Sonoco Development, Inc. Flexible packaging structure with built-in tamper-evidence features and method for making same
US11027892B2 (en) 2008-07-24 2021-06-08 Deborah Lyzenga Package integrity indicating closure
US10118741B2 (en) 2008-07-24 2018-11-06 Deborah Lyzenga Package integrity indicating closure
US9630761B2 (en) 2008-10-20 2017-04-25 Mondelez UK Holding & Services Limited Packaging
US9205967B2 (en) 2010-01-26 2015-12-08 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9221590B2 (en) 2010-03-23 2015-12-29 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9656783B2 (en) 2010-05-18 2017-05-23 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US9708104B2 (en) 2010-05-18 2017-07-18 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US9688442B2 (en) 2011-03-17 2017-06-27 Intercontinental Great Brands Llc Reclosable flexible film packaging products and methods of manufacture

Also Published As

Publication number Publication date
DE8915966U1 (pl) 1992-06-25
DE3923772A1 (de) 1991-01-31

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