EP0141792A2 - Verschluss - Google Patents

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Publication number
EP0141792A2
EP0141792A2 EP84850326A EP84850326A EP0141792A2 EP 0141792 A2 EP0141792 A2 EP 0141792A2 EP 84850326 A EP84850326 A EP 84850326A EP 84850326 A EP84850326 A EP 84850326A EP 0141792 A2 EP0141792 A2 EP 0141792A2
Authority
EP
European Patent Office
Prior art keywords
closure
marginal part
closure according
opening
terized
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
EP84850326A
Other languages
English (en)
French (fr)
Other versions
EP0141792A3 (en
EP0141792B1 (de
Inventor
Lennart Larsson
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.)
Akerlund and Rausing AB
Original Assignee
Akerlund and Rausing AB
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 Akerlund and Rausing AB filed Critical Akerlund and Rausing AB
Priority to AT84850326T priority Critical patent/ATE42523T1/de
Publication of EP0141792A2 publication Critical patent/EP0141792A2/de
Publication of EP0141792A3 publication Critical patent/EP0141792A3/en
Application granted granted Critical
Publication of EP0141792B1 publication Critical patent/EP0141792B1/de
Expired 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
    • B65D3/12—Flanged discs permanently secured, e.g. by adhesives or by heat-sealing
    • 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
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/12—Closures secured by soldering, welding, or otherwise uniting opposed surfaces

Definitions

  • the present invention relates to a closure for a packaging container, primarily for pressure creating or pressurized filling goods, for instance carbonated drinks.
  • a closure for a packaging container, primarily for pressure creating or pressurized filling goods, for instance carbonated drinks.
  • the closure is useful also in general for containers having relatively thin walls.
  • the closure is of a heat sealable type providing an adequate sealing pressure in the sealing area.
  • the problem behind the invention is to provide a closure having strain resisting sealing characteristics and an inherent controllable deformation resistance against internal pressure as well as handling.
  • the problem is also to provide means allowing expansion, created by pressure, of the volume of the package such that a volume in excess to the nominal filling volume may be assumed.
  • a most important sub-problem is to provide a closure allowing sealing with an acceptable counter-pressure, meaning the provision of a sufficient sealing pressure in the sealing area.
  • the invention in general provides a closure for a packaging container comprising at least one panel of a relatively thin and flexible material for substantially covering an opening in the packaging container, and a marginal part surrounding the panel and attachable to the edge of the opening.
  • the closure is characterized in that the marginal part comprises a sealing area having a fold formed in the panel and exposed to the internal region of the package, said sealing area at least partially consisting of the said flexible material and having a sealing strength in the interval zero to less than the sealing strength of the marginal part against the edge.
  • the closure forms the end piece of a sleeve shaped container casing
  • the sealing area comprises a fold having radially inner and outer rims and extending circumferentially around the panel.
  • the radially outer rim of the fold is integral with a lip of the marginal part that is attachable to the casing.
  • the radially outer rim forms said lip.
  • the lip comprises a double layer of the flexible material.
  • the layers of the lip preferably are sealed against each other.
  • the sealing strength between the layers of the lip is higher than the sealing strength of the fold.
  • this layer preferably comprises at least the lower portion of the rim and a skirt folded around the rim.
  • the extension of the skirt preferably is such that at least one edge is hidden behind the rim and/or in the wall of the packaging container.
  • the marginal part with advantage comprises a conical region acting as an entering part.
  • the marginal part and/or the panel preferably also comprises a material suitable for induction sealing or high frequency welding or a combination thereof, at least in the sealing area.
  • the reference numeral 10 generally relates to a container closure shown in a partial section view and comprising a lid panel 11 and a marginal part 12.
  • the closure 10 is manufactured from a relative thin flexible material, for instance a laminate comprising an aluminium foil having a thickness in the interval 10 to 200 ⁇ m and having a coating of a thermoplastic material, preferably a polyolefine, on one or both sides thereof.
  • a relative thin flexible material for instance a laminate comprising an aluminium foil having a thickness in the interval 10 to 200 ⁇ m and having a coating of a thermoplastic material, preferably a polyolefine, on one or both sides thereof.
  • Other type of material/material combinations are of course possible, for instance plastic laminates/plastic film having a suitable additive for giving the required tightness degree and/or for allowing a specific sealing method.
  • a sealing area comprising a fold 13 extending around the panel 11 is formed in the end closure and exposed to the internal region of the package, which here merely has been shown as a portion of a sleeve wall 14.
  • the fold is formed by folding the margin of the blank forming the closure 10.
  • the fold has an outer rim 15, which is this case alone forms a lip for sealing against the sleeve wall.
  • the seal 16 between the rim and the sleeve is formed with a sufficient sealing pressure for obtaining an acceptable sealing. This pressure is obtained in that a counter-pressure is created by means of a support 17 which is displaceable in the directions of the double arrow 18 and for instance expandable in the directions of the double arrow 18' and which co-operates with a stationary support 19.
  • the sealing technique used may for instance comprise induction welding or high frequency welding, and in this case the material of the end closure 10, at least in the welding area comprises an additive well suited for the actual welding technique.
  • the end closure generally is laminated with a metal foil (not explicitely shown in Figures 1 to 5) along the entire surface thereof.
  • the seal 16 preferably extends along the entire height of the rim 15 and continously around the sleeve 14.
  • a lacquer layer 20 In order to protect the free edge of the rim, the cut edge, a lacquer layer 20, alternatively a tape or other protective means is arranged along the edge facing the internal region of the package.
  • the fold 1.3 which is exposed to the internal region of the package, has a seal 22 of so called peelable type.
  • the seal 22 is thus weaker than the seal 16.
  • the seal 22 will break (if such a seal exists, i.e. a seal having a strength higher than zero).
  • the flexible end closure 10 (cover panel 11) then assumes its natural shape according to the broken lines 23 in Figure 1. Due to the increase of volume the pressure decreases inside the container.
  • the seal is protected by this construction, meaning that the risk for leakage and destruction of the contents of the package is reduced at the same time as the fold construction, in the manner mentioned, allows the creation of an acceptable sealing pressure.
  • a lip 15 comprising double material layers 15' and 15".
  • the layer 15' forms a skirt which is folded and sealed against the rim 15" in order to reinforce the end closure.
  • the seal 15"' preferably is of the same strength as the seal 16 and has an extension in the height direction for instance equal to the height of the rim 15". The seal may also be accomplished dot-wise, alternatively along a certain part of the height of the rim.
  • the fold 13 has a peelable seal 22, which at a strain exceeding the maximum load allows resetting of lid panel 11 to the natural position 23 thereof.
  • edge part 12 is placed in a position below the top edge of the sleeve 14. Such placement implies that the lid panel 11, in the natural position 23 thereof, is protected by the sleeve 14 and/or the skirt 15'.
  • FIG 4 there is shown a version of an end closure where the skirt 15' is shortened and the upper portion of the rim 15" of the marginal part 12 is sealed against the sleeve 14. This seal together with the seal 16 forms the actual sealing of the end closure 10. In the same manner as previously there is a peelable seal 22 in the fold 13 exposed to the internal region of the package.
  • FIG 5 there is shown a conical marginal part 12 for facilitating the entering operation.
  • the rim 15 of the marginal part may be formed from or covered by a banderol 25 according to Figure 6.
  • a banderol punched out to a trapezoid shape, almost provides an essentially smooth sealing area.
  • end closures in the embodiments shown have been manufactured from a flexible, foldable material it is realized that other processing techniques, for instance injection moulding, may be used as an alternative for manufacturing of certain parts, for instance the marginal part, of the end closure.
  • FIG 7 there is shown a version where the lid panel 11 comprises a relatively thick material and for instance is injection moulded and thereafter laminated by an aluminium foil 11' or corresponding.
  • the idea is to provide a double layer 12 which may be pressed together and pressed against the walls of the sleeve or the opening edge against which the closure should be placed.
  • the pressing together may for instance be accomplished by pressing the panel 11 axially inwards the container at the same time as the rim 15 is prevented from moving into the sleeve.
  • Such a controlled pressing operation may be obtained by overdimensioning the double layer relative the opening, at least in certain areas of the double layer, for instance by forming said layer with a truncated conical shape as in Figure 8.
  • Figure 9 shows the effect of the pressing together pressure - between the layers and against the sleeve - after folding. Frequently, the "void space" will not occur, but in Figure 9 it has been indicated for illustration purposes as a result obtainable by a controlled application of pressure in the welding area.
  • FIG 10 there is shown a pressure resistant closure obtained by over-dimensioning the foil/sealing label 11' relative the opening in the sleeve 14.
  • the strain is transferred by the relatively stiff rim 15, meaning an advantageous "line load” (along a line in the height direction) in the welding area (contrary to a strain along a peripheral line).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Seal Device For Vehicle (AREA)
  • Closures For Containers (AREA)
EP84850326A 1983-11-07 1984-10-25 Verschluss Expired EP0141792B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84850326T ATE42523T1 (de) 1983-11-07 1984-10-25 Verschluss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8306087A SE444423B (sv) 1983-11-07 1983-11-07 Forslutning till forpackningsbehallare
SE8306087 1983-11-07

Publications (3)

Publication Number Publication Date
EP0141792A2 true EP0141792A2 (de) 1985-05-15
EP0141792A3 EP0141792A3 (en) 1986-09-17
EP0141792B1 EP0141792B1 (de) 1989-04-26

Family

ID=20353196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84850326A Expired EP0141792B1 (de) 1983-11-07 1984-10-25 Verschluss

Country Status (4)

Country Link
EP (1) EP0141792B1 (de)
AT (1) ATE42523T1 (de)
DE (1) DE3477917D1 (de)
SE (1) SE444423B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174354A1 (de) * 2000-07-19 2002-01-23 Franz Delbrouck GmbH Transportbehälter
WO2019068486A1 (en) * 2017-10-04 2019-04-11 Tetra Laval Holdings & Finance S.A. PACKAGING CONTAINER

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9005605B2 (en) 2010-08-19 2015-04-14 Allergan, Inc. Compositions and soft tissue replacement methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002544A1 (fr) 1979-05-23 1980-11-27 Scal Gp Condit Aluminium Recipient a parois souples pour produits sous pression et procede de realisation d'un tel recipient

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE215245C (de) * 1908-08-29 1909-10-26
US2085458A (en) * 1934-11-19 1937-06-29 Clarence H Walker Box
DE3305144A1 (de) * 1983-02-15 1984-08-16 Hoechst Ag, 6230 Frankfurt Innendruckbelastbare verpackung aus flexiblem material fuer fuellgueter, vorzugsweise fluessigkeiten, verfahren zur herstellung einer befuellten verpackung und verwendung der verpackung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002544A1 (fr) 1979-05-23 1980-11-27 Scal Gp Condit Aluminium Recipient a parois souples pour produits sous pression et procede de realisation d'un tel recipient
EP0029039A1 (de) 1979-05-23 1981-05-27 Scal Gp Condit Aluminium Behälter mit flexiblen wänden für unter druck stehende produkte.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174354A1 (de) * 2000-07-19 2002-01-23 Franz Delbrouck GmbH Transportbehälter
WO2019068486A1 (en) * 2017-10-04 2019-04-11 Tetra Laval Holdings & Finance S.A. PACKAGING CONTAINER
EP3466824A3 (de) * 2017-10-04 2019-04-17 Tetra Laval Holdings & Finance S.A. Verpackungsbehälter

Also Published As

Publication number Publication date
ATE42523T1 (de) 1989-05-15
SE444423B (sv) 1986-04-14
EP0141792A3 (en) 1986-09-17
EP0141792B1 (de) 1989-04-26
SE8306087L (sv) 1985-05-08
SE8306087D0 (sv) 1983-11-07
DE3477917D1 (en) 1989-06-01

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