EP1473243B1 - Cardboard composite can - Google Patents

Cardboard composite can Download PDF

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Publication number
EP1473243B1
EP1473243B1 EP03009530A EP03009530A EP1473243B1 EP 1473243 B1 EP1473243 B1 EP 1473243B1 EP 03009530 A EP03009530 A EP 03009530A EP 03009530 A EP03009530 A EP 03009530A EP 1473243 B1 EP1473243 B1 EP 1473243B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
cardboard composite
membrane
cardboard
flange
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.)
Expired - Lifetime
Application number
EP03009530A
Other languages
German (de)
French (fr)
Other versions
EP1473243A1 (en
Inventor
Werner Breier
Martina Goldschmidt
Frank Eckmann
Klaus Kössendrup
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.)
Abro Weidenhammer GmbH
Original Assignee
Abro Weidenhammer GmbH
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 Abro Weidenhammer GmbH filed Critical Abro Weidenhammer GmbH
Priority to EP03009530A priority Critical patent/EP1473243B1/en
Priority to DE50303943T priority patent/DE50303943D1/en
Priority to AT03009530T priority patent/ATE330861T1/en
Publication of EP1473243A1 publication Critical patent/EP1473243A1/en
Application granted granted Critical
Publication of EP1473243B1 publication Critical patent/EP1473243B1/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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • 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
    • 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
    • B65D3/22—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 with double walls; with walls incorporating air-chambers; with walls made of laminated material
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00268—Paper
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527—NO contact
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00638—Rolled edge
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00685—Totality
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00722—Profiles
    • B65D2543/0074—Massive bead
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00787—Periphery concerned
    • B65D2543/00796—Totality

Definitions

  • the invention relates to a cardboard composite can with a inner lining having sleeve of a paper or cardboard composite, the opening edge is formed at one end to form a flange to the outside, wherein the inner lining extends over the flange to the outside, with a sleeve at its other end closing bottom and a sleeve closing the sleeve at the deformed end, which is formed from a stamped part with circumferentially projecting tongue, wherein the membrane is arranged sunk in the sleeve and sealed exclusively with an annular, sleeve-parallel sealing surface on the inner lining.
  • Such cardboard composite cans are used in particular for receiving free-flowing or fluid substances, for example foods.
  • the lower part of the cardboard composite can formed from the sleeve and the bottom, and in particular the sleeve which forms the lateral surface of the cardboard composite can, consists of a paper or cardboard composite and generally carries an imprint characterizing the contents of the cardboard composite can.
  • the lower part of the cardboard composite can on its inside usually a lamination of a substantially gas-impermeable material.
  • a regular cover provided that it also consists of paper or cardboard composite.
  • carton composite cans are typically sealed by a membrane of gas impermeable material such as metal, plastic or the like to provide further protection and shelf life of the packaged goods as well as protection of the consumer from accidental or intentional damage or contamination of the packaged goods.
  • a membrane seal is durably more or less completely removed during the first opening of the cardboard composite can, whereby a successful opening of the cardboard composite can be clearly seen.
  • US Pat. No. 6,058,682 A describes a cardboard composite can with a membrane applied on the inside of the sleeve thereof according to the preamble of claim 1, which is used in particular for holding foods such as ice cream, yoghurt, dairy products or the like, and the abovementioned disadvantages with respect to a sealing finish encountered.
  • the membrane can not be sealed in this way directly in the region of the opening edge, which would be desirable due to a better utilization of the filling volume of the sleeve and consequently in view of a material saving associated therewith.
  • the invention is based on the above-described prior art and while avoiding the disadvantages associated with this, the object of the invention to provide a cardboard composite can, which can be permanently sealed in a simple and cost-effective manner by means of a membrane and even after the first-time opening a sealing reclosure with the help of a lid allows.
  • the solution according to the invention ensures that, due to the arrangement of the membrane completely inside the cardboard composite box according to the invention, there is no damage to the lining in the crest area of the bead, i. in the contact area of the same comes with a lid, whereby an optimal protection of the packaged goods is guaranteed even after the first-time opening.
  • the membrane rests against the inner lining in an annular region to form a sleeve-parallel sealing surface. Due to the planar connection of the membrane with the inner lining of the lower part of the cardboard composite can a safe and optimal protection of the packaged, large-area sealing of the cardboard composite can according to the invention can be achieved. Due to the configuration of the flange with an outer layer of the sleeve, which rests its outer side substantially in parallel position, an additional degree of stability of the composite material is achieved in this area.
  • the sleeve is a from below to the sealing surface has substantially continuously narrowing cross-section.
  • the cross-sectional constriction preferably corresponds approximately to twice the wall thickness of the sleeve.
  • the invention provides in a simple manner on the one hand an abutment for a bead arranged on the inside of the lid, by which the lid is held on the lower part of the cardboard composite can.
  • the lid is preferably on the inner lining in the region of the hemming, whereby protection of the packaged goods is ensured even after the first-time opening of the cardboard composite can according to the invention in the manner already mentioned.
  • the cross-sectional constriction of the sleeve prevents tearing of the inner liner in the region of the flange during the beading process, which opens up greater opportunities in the choice of Kaschtechniksmaterials.
  • the folded-over to a pull tab tongue runs approximately parallel to a cover.
  • the tongue is thereby folded around the opening edge of the sleeve to the inside.
  • the tear-out can be optimally taken after removal of the lid, so that the membrane is easily.
  • the membrane itself may according to a further embodiment of the invention consist of metal or in another preferred embodiment of plastic.
  • moisture-sensitive packaging goods are well protected during the storage period before the first opening due to the properties of the membrane material against external influences.
  • Fig. 1 shows the cardboard composite can 1 with a lid 2 and a lower part 3, which is formed in there unspecified embodiment of a sleeve 4 and a bottom 5 and partially constant diameter D, D 'has.
  • the cardboard composite can 1 is closed on the lid side by means of a membrane 6.
  • the section II according to FIG. 2 shows the upper section of the lower part 3 or the sleeve 4 and the inner lining 7, for example made of plastic, attached on its inside. in combination with a metal foil.
  • the cardboard composite is flanged and pressed to the outside, so that an outer layer 8 of the sleeve 4 rests in a parallel position on the outside 9 of the sleeve 4, wherein the wall thickness of the outer layer 8 decreases towards its end 8a.
  • the inner lining 7 extends over the bead 10 thus formed to the outside.
  • the membrane 6 is ring-flat and separable with the inner layer 7 of the lower part 3 and the sleeve 4 connected to form a sealing surface 12 with the height H.
  • the membrane 6 has a tongue-shaped pull-tab 13 which extends below the tongue Cover 2 is also arranged in the interior 11 of the cardboard composite can 1 and folded away near the opening edge 4a of the sleeve wall inwardly.
  • the cover 2 of the cardboard composite can 1 is formed substantially in the form of a flat Stülpdeckels whose side walls on the inside have a circumferential bead 14, for which the outer layer 8 of the sleeve 4 an abutment for latching attachment of the lid 2 on the lower part 3 of the cardboard composite box. 1 forms.
  • the lower part 3 and the sleeve 4 of the cardboard composite can 1 in a region 15 below the sealing surface 12 has a substantially continuously narrowing from bottom to top cross section with a partially S-shaped course, so that in conjunction with the decreasing wall thickness of the outer layer 8 of the sleeve 4 and below this a groove 16 is formed on the outside 9 of the sleeve 4, in which the bead 14 of the lid 2 for holding the lid 2 on the lower part 3 of the cardboard composite box 1 engages detent.
  • the packaging material (not shown) protective membrane 6 is completely recessed in the interior 11 of the cardboard composite box 1, which brings over the prior art, significant advantages.
  • the inner lining 7 is not damaged in the region of the flange 10, in particular when removing the membrane 6, so that a permanent sealing seal between the cover 2 and inner lining 7 in the region of the flange 10 is ensured after resealing.
  • those forces which are to be applied in particular in planar sealing of the membrane 6 for peeling removal of the membrane 6 of the cardboard composite can 1, often greater than the adhesion forces of the paper or cardboard composite, from which the cardboard composite can 1 in itself or essential parts 4 of which are formed.
  • the solution according to the invention circumvents this problem in a structurally simple way: Due to the folded-out inner lining 7 is the Forming the membrane 6 to a Vollausrißmembran with large-area Aufêtelung allows because due to the leadership of the inner liner 7 except for the outside 9 of the lower part 3 and the sleeve 4 a peeling of the inner lining 7 avoided by acting on the sleeve walls during separation of the membrane 6 forces is, and it comes to no destruction of the paper or cardboard composite of the lower part 3.
  • the section along line III-III of FIG. 2 shown in FIG. 3 illustrates the simple design of the membrane 6 according to the invention with the tear-off tab 13 arranged in the region of its circumference 17.
  • the membrane diameter before insertion into the sleeve 4 is opposite the diameter D '. of the lower part 3 and the sleeve 4 is increased by a dimension which corresponds to substantially twice the height H of the sealing surface 12 (FIG. 2).
  • the membrane 6 consists for example of aluminum, plastic or the like and is as a stamped part of a flat board made with a circumferentially projecting tongue 13.
  • the membrane 6 before insertion preferably has a substantially the cross-sectional shape of the sleeve 4 corresponding shape, ie in the embodiment shown a circular shape and has a relation to a diameter D 'of the lower part 3 and the sleeve 4 in the region of the sealing surface 12 to be formed enlarged diameter.
  • the membrane 6 After insertion and insertion into the sleeve 4, the membrane 6 is separable with the inner lining 7 of the sleeve 4 in the region of its edge region (bent upward after insertion into the sleeve 4), for example by means of a combined drawing and sealing tool (not shown) connected, for example, sealed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)

Abstract

The cardboard composite container (1) has a paper or cardboard composite sleeve (4) with an inner lining (7) and with the opening edge (4a) of the sleeve formed over to create a flange (10). A membrane (6) is recessed in the sleeve and is sealed on the inner lining exclusively by an annular sealing face (12) parallel to the sleeve. The membrane has a tongue folded down inwards to form a tear-off tab (13). An outer layer (8) of the sleeve in the region of the flange on the outer side (9) of the sleeve lies in a parallel position.

Description

Die Erfindung betrifft eine Kartonverbunddose mit einer eine Innenkaschierung aufweisenden Hülse aus einem Papier- oder Kartonverbund, deren Öffnungsrand an einem Ende unter Bildung eines Bördels nach außen umgeformt ist, wobei die Innenkaschierung über den Bördel nach außen verläuft, mit einem die Hülse an ihrem anderen Ende verschließenden Boden und einer die Hülse an dem umgeformten Ende verschließenden Membran, die aus einem Stanzteil mit umfangsseitig überstehender Zunge gebildet ist, wobei die Membran in der Hülse eingesenkt angeordnet und ausschließlich mit einer ringförmigen, hülsenparallelen Siegelfläche auf der Innenkaschierung aufgesiegelt ist.The invention relates to a cardboard composite can with a inner lining having sleeve of a paper or cardboard composite, the opening edge is formed at one end to form a flange to the outside, wherein the inner lining extends over the flange to the outside, with a sleeve at its other end closing bottom and a sleeve closing the sleeve at the deformed end, which is formed from a stamped part with circumferentially projecting tongue, wherein the membrane is arranged sunk in the sleeve and sealed exclusively with an annular, sleeve-parallel sealing surface on the inner lining.

Derartige Kartonverbunddosen werden insbesondere zur Aufnahme von rieselfähigen oder fluiden Substanzen, beispielsweise Lebensmitteln, verwendet. Das aus Hülse und Boden gebildete Unterteil der Kartonverbunddose und insbesondere die die Mantelfläche der Kartonverbunddose bildende Hülse besteht aus Papier- oder Kartonverbund und trägt in der Regel einen den Inhalt der Kartonverbunddose kennzeichnenden Aufdruck.Such cardboard composite cans are used in particular for receiving free-flowing or fluid substances, for example foods. The lower part of the cardboard composite can formed from the sleeve and the bottom, and in particular the sleeve which forms the lateral surface of the cardboard composite can, consists of a paper or cardboard composite and generally carries an imprint characterizing the contents of the cardboard composite can.

Um den Inhalt der Kartonverbunddose vor äußeren Einflüssen, z.B. Feuchtigkeit, oder vor Substanzverlust, beispielsweise durch Austrocknen, zu schützen, weist zumindest das Unterteil der Kartonverbunddose auf seiner Innenseite in der Regel eine Kaschierung aus einem im wesentlichen gasundurchlässigen Material auf. Desgleichen gilt auch für einen regelmäßig vorhandenen Deckel, sofern dieser ebenfalls aus Papier- oder Kartonverbund besteht.In order to prevent the contents of the cardboard composite can from external influences, e.g. Moisture, or to protect against loss of substance, for example by drying, at least the lower part of the cardboard composite can on its inside usually a lamination of a substantially gas-impermeable material. The same applies to a regular cover, provided that it also consists of paper or cardboard composite.

Zusätzlich zu einem derartigen Schutz des Verpackungsguts sind Kartonverbunddosen in der Regel mittels einer Membran aus gasundurchlässigem Material, wie Metall, Kunststoff oder dergleichen versiegelt, um auf diese Weise einen weitergehenden Schutz und eine längere Haltbarkeitsdauer des Verpackungsguts sowie einen Schutz des Verbrauchers vor ungewollter oder beabsichtigter Beschädigung oder Verunreinigung des Verpackungsguts zu gewährleisten. Eine derartige Membransiegelung wird beim ersten Öffnen der Kartonverbunddose dauerhaft mehr oder weniger vollständig entfernt, wodurch ein erfolgtes Öffnen der Kartonverbunddose deutlich erkennbar ist.In addition to such protection of the packaged product, carton composite cans are typically sealed by a membrane of gas impermeable material such as metal, plastic or the like to provide further protection and shelf life of the packaged goods as well as protection of the consumer from accidental or intentional damage or contamination of the packaged goods. Such a membrane seal is durably more or less completely removed during the first opening of the cardboard composite can, whereby a successful opening of the cardboard composite can be clearly seen.

Es sind Kartonverbunddosen ohne Bördel in Kombination mit an sich aufwendig herzustellenden tiefgezogenen Membranen bekannt, wobei letztere mit einem umlaufenden Bördel versehen und von oben auf die Kartonverbunddose aufgesetzt sind, so daß der Schnittrand der Dose mittels des Bördels der Membran abgedeckt ist. Die Membran selbst ist mit der Innenkaschierung der Dose unter Bildung einer Siegelfläche trennbar verbunden und weist zum Ausreißen eine von oben aufgesiegelte Ausreißlasche auf. Da beim Ausreißen einer derartigen Membran zwecks dauerhaft zu gewährleistender Abdeckung der Dosenschnittkante sowie gegebenenfalls zur Sicherstellung einer Dichtung zwischen dem Deckel und dem Unterteil der Kartonverbunddose der die Oberkante des Unterteils abdeckende Membranbördel nicht mit ausgerissen werden darf, ist bei einer derartigen bekannten Membran das Vorsehen einer Sollbruchkante im Bereich der Siegelfläche erforderlich. Dies führt gemeinsam mit der aufgesiegelten Ausreißlasche zu einer erhöhten Komplexität, die zur fertigungstechnischen Verteuerung einer solchen Ausgestaltung beiträgt.There are cardboard composite cans without flare in combination with intricately produced deep-drawn membranes known, the latter being provided with a circumferential flare and are placed from above on the cardboard composite can, so that the cut edge of the can is covered by the flange of the membrane. The membrane itself is separably connected to the inner lining of the can to form a sealing surface and has to tear a aufgesiegelte pull tab on. As in the ripping of such a membrane in order to ensure permanently cover the can cutting edge and optionally to ensure a seal between the lid and the lower part of the cardboard composite can the upper edge of the lower part Covering membrane flange must not be ripped out, with such a known membrane, the provision of a predetermined breaking edge in the region of the sealing surface is required. This leads, together with the aufgesiegelten pull tab to increased complexity, which contributes to the manufacturing cost of such a design.

Daher kommen bei bekannten Kartonverbunddosen mit Bördel in der Regel flache bzw. ebene Membranen zum Einsatz. So ist es zum Beispiel aus der DE 297 12 611 U1 (EP 0 893 354/US 6 176 069 A) bekannt, im Scheitelbereich des Bördelrandes die Membran unter Ausbildung einer ringförmigen Siegelfläche zwischen der Membran selbst und der im Bereich des Bördels außen liegenden Innenkaschierung des Unterteils aufzusiegeln. Zum Öffnen einer derartigen Kartonverbunddose wird die Membran durch Ziehen an einer über die ansonsten im wesentlichen der Dosenöffnung entsprechende Form der Membran herausragenden Abreißlasche unter Trennung der Verbindung an der Siegelfläche vollständig vom Öffnungsrand der Dose abgerissen. Hierbei ist insbesondere als nachteilig anzusehen, daß es aufgrund der gewaltsamen Trennung der Verbindung zwischen Membran und Kaschierung im Scheitelbereich des Bördels des Unterteils leicht zu einer Beschädigung der Kaschierung oder gar des Kartonverbunds in diesem Bereich kommt. Da dieser Bereich anschließend als Auflagefläche für einen Verschluß, z.B. einen Stülpdeckel, der Kartonverbunddose dienen soll, wird nur noch ein unbefriedigender Dichtabschluß erreicht. Dies wirkt sich auf die Haltbarkeit des Verpackungsguts negativ aus. Derselbe nachteilige Effekt tritt auf, wenn Reste der Membran im Scheitelbereich des Bördels verbleiben, was regelmäßig der Fall ist.Therefore, in known cardboard composite cans with flare usually flat or flat membranes are used. For example, it is known from DE 297 12 611 U1 (EP 0 893 354 / US Pat. No. 6,176,069 A), in the apex region of the flanged edge, to form an annular sealing surface between the membrane itself and the inner lining in the region of the flare of the lower part aufzusiegeln. To open such a cardboard composite canister, the membrane is completely torn off from the opening edge of the can by pulling on a tear-off tab projecting beyond the otherwise substantially corresponding opening of the can opening. It is to be regarded in particular as disadvantageous that due to the violent separation of the connection between the membrane and the lamination in the apex region of the flange of the lower part, the lamination or even the cardboard composite in this region is easily damaged. Since this area is then intended to serve as a support surface for a closure, for example a slip-on lid, the cardboard composite can, only an unsatisfactory sealing closure is achieved. This has a negative effect on the durability of the packaged goods. The same adverse effect occurs when remnants of the membrane remain in the crest area of the crest, which is the case regularly.

Die US 6 058 682 A beschreibt eine Kartonverbunddose mit einer innenseitig auf die Hülse derselben aufgebrachten Membran gemäß dem Oberbegriff des Anspruchs 1, welche insbesondere zur Aufnahme von Lebensmitteln, wie Eiscreme, Joghurt, Molkereiprodukten oder dergleichen, dient und den oben erwähnten Nachteilen hinsichtlich eines Dichtabschlusses begegnet. Während des Aufsiegelns der Membran um eine unterhalb des Bördels der Hülse angeordnete, hülsenparallele Siegelfläche mittels eines von oben in die Hülse eingreifenden Siegelwerkzeugs wird die Hülse von außen mittels eines Halters abgestützt, um eine Verformung der Hülse bzw. ein Zurückweichen derselben unter dem Siegeldruck des Siegelwerkzeugs zu verhindern. Indes läßt sich die Membran auf diese Weise nicht unmittelbar im Bereich des Öffnungsrandes aufsiegeln, was aufgrund einer besseren Ausnutzung des Füllvolumens der Hülse und folglich im Hinblick auf eine hiermit verbundene Materialersparnis wünschenswert wäre.US Pat. No. 6,058,682 A describes a cardboard composite can with a membrane applied on the inside of the sleeve thereof according to the preamble of claim 1, which is used in particular for holding foods such as ice cream, yoghurt, dairy products or the like, and the abovementioned disadvantages with respect to a sealing finish encountered. During the sealing of the membrane around a sleeve sleeve-parallel sealing surface arranged below the flange of the sleeve, the sleeve is supported from the outside by means of a holder in order to deform the sleeve or retract it under the sealing pressure of the sealing tool to prevent. However, the membrane can not be sealed in this way directly in the region of the opening edge, which would be desirable due to a better utilization of the filling volume of the sleeve and consequently in view of a material saving associated therewith.

Der Erfindung liegt, ausgehend von dem vorstehend geschilderten Stand der Technik und unter Vermeidung der mit diesem verbundenen Nachteilen, die Aufgabe zugrunde, eine Kartonverbunddose zu schaffen, die sich auf einfache und kostengünstige Weise mittels einer Membran dauerhaft versiegeln läßt und die auch nach erfolgtem erstmaligen Öffnen ein dichtendes Wiederverschließen mit Hilfe eines Deckels ermöglicht.The invention is based on the above-described prior art and while avoiding the disadvantages associated with this, the object of the invention to provide a cardboard composite can, which can be permanently sealed in a simple and cost-effective manner by means of a membrane and even after the first-time opening a sealing reclosure with the help of a lid allows.

Diese Aufgabe wird bei einer Kartonverbunddose der eingangs genannten Art dadurch gelöst, daß die überstehende Zunge unter Bildung einer Ausreißlasche nach innen umgelegt ist, und daß eine äußere Lage der Hülse im Bereich des Bördels und der hülsenparallelen Siegelfläche der Außenseite der Hülse im wesentlichen in Parallellage anliegt.This object is achieved in a cardboard box of the type mentioned above in that the projecting tongue is folded to form a tear-out inward, and that an outer layer of the sleeve in the region of the flange and the sleeve-parallel sealing surface of the outside of the sleeve is substantially in parallel position ,

Durch die erfindungsgemäße Lösung ist sichergestellt, daß es aufgrund der Anordnung der Membran vollständig im Inneren der erfindungsgemäßen Kartonverbunddose zu keiner Beschädigung der Kaschierung im Scheitelbereich des Bördels, d.h. im Kontaktbereich desselben mit einem Deckel kommt, wodurch ein optimaler Schutz des Verpackungsguts auch nach erfolgtem erstmaligem Öffnen gewährleistet ist. Die Membran liegt dabei in einem ringförmigen Bereich unter Bildung einer hülsenparallelen Siegelfläche an der Innenkaschierung an. Durch die flächige Verbindung der Membran mit der Innenkaschierung des Unterteils der Kartonverbunddose ist eine sichere und das Verpackungsgut optimal schützende, großflächige Versiegelung der erfindungsgemäßen Kartonverbunddose erreichbar. Aufgrund der Ausgestaltung des Bördels mit einer äußeren Lage der Hülse, die deren Außenseite im wesentlichen in Parallellage anliegt, wird ein zusätzliches Maß an Stabilität des Verbundmaterials in diesem Bereich erreicht.The solution according to the invention ensures that, due to the arrangement of the membrane completely inside the cardboard composite box according to the invention, there is no damage to the lining in the crest area of the bead, i. in the contact area of the same comes with a lid, whereby an optimal protection of the packaged goods is guaranteed even after the first-time opening. The membrane rests against the inner lining in an annular region to form a sleeve-parallel sealing surface. Due to the planar connection of the membrane with the inner lining of the lower part of the cardboard composite can a safe and optimal protection of the packaged, large-area sealing of the cardboard composite can according to the invention can be achieved. Due to the configuration of the flange with an outer layer of the sleeve, which rests its outer side substantially in parallel position, an additional degree of stability of the composite material is achieved in this area.

Gemäß einer Weiterbildung der erfindungsgemäßen Kartonverbunddose ist vorgesehen, daß die Hülse einen sich von unten zur Siegelfläche im wesentlichen kontinuierlich verengenden Querschnitt aufweist. Dabei entspricht die Querschnittsverengung vorzugsweise in etwa der doppelten Wandstärke der Hülse. Auf diese Weise schafft die Erfindung in einfacher Weise einerseits ein Widerlager für eine auf der Innenseite des Deckels angeordnete Wulst, durch die der Deckel auf dem Unterteil der Kartonverbunddose gehalten ist. Dabei liegt der Deckel vorzugsweise auf der Innenkaschierung im Bereich des Bördels auf, wodurch in bereits erwähnter Weise ein Schutz des Verpackungsguts auch nach erfolgtem erstmaligem Öffnen der erfindungsgemäßen Kartonverbunddose sichergestellt ist. Andererseits verhindert die Querschnittsverengung der Hülse ein Zerreißen der Innenkaschierung im Bereich des Bördels während des Umbördelvorgangs, was größere Möglichkeiten bei der Wahl des Kaschierungsmaterials eröffnet.According to a development of the cardboard composite can according to the invention it is provided that the sleeve is a from below to the sealing surface has substantially continuously narrowing cross-section. The cross-sectional constriction preferably corresponds approximately to twice the wall thickness of the sleeve. In this way, the invention provides in a simple manner on the one hand an abutment for a bead arranged on the inside of the lid, by which the lid is held on the lower part of the cardboard composite can. In this case, the lid is preferably on the inner lining in the region of the hemming, whereby protection of the packaged goods is ensured even after the first-time opening of the cardboard composite can according to the invention in the manner already mentioned. On the other hand, the cross-sectional constriction of the sleeve prevents tearing of the inner liner in the region of the flange during the beading process, which opens up greater opportunities in the choice of Kaschierungsmaterials.

Im Rahmen einer Weiterbildung der erfindungsgemäßen Kartonverbunddose ist vorgesehen, daß die zu einer Ausreißlasche umgelegte Zunge etwa parallel zu einem Deckel verläuft. Vorzugweise ist die Zunge dabei nahe dem Öffnungsrand der Hülse nach innen umgelegt. Bei einer solchen Anordnung läßt sich die Ausreißlasche nach Entfernen des Deckels optimal fassen, so daß die Membran leicht ausreißbar ist.As part of a development of the cardboard composite can according to the invention it is provided that the folded-over to a pull tab tongue runs approximately parallel to a cover. Preferably, the tongue is thereby folded around the opening edge of the sleeve to the inside. In such an arrangement, the tear-out can be optimally taken after removal of the lid, so that the membrane is easily herausreißbar.

Die Membran selbst kann nach einer weiteren Ausgestaltung der Erfindung aus Metall oder in weiterer bevorzugter Ausgestaltung aus Kunststoff bestehen. Insbesondere feuchtigkeitsempfindliche Verpackungsgüter sind so während der Lagerzeit vor dem erstmaligen Öffnen aufgrund der Eigenschaften des Membranmaterials gut gegen äußere Einwirkungen geschützt.The membrane itself may according to a further embodiment of the invention consist of metal or in another preferred embodiment of plastic. In particular, moisture-sensitive packaging goods are well protected during the storage period before the first opening due to the properties of the membrane material against external influences.

Im folgenden ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. In der Zeichnung zeigen:

Fig. 1
eine Ansicht des Ausführungsbeispiels der Kartonverbunddose in axialem Halbschnitt;
Fig. 2
einen vergrößerten Detailschnitt des oberen Bereichs II der Kartonverbunddose gemäß Fig. 1; und
Fig. 3
einen Schnitt III-III gemäß Fig. 2 (ohne Deckel).
In the following the invention with reference to an embodiment shown in the drawing is explained in more detail. In the drawing show:
Fig. 1
a view of the embodiment of the cardboard composite can in axial half section;
Fig. 2
an enlarged detail section of the upper portion II of the cardboard composite box of FIG. 1; and
Fig. 3
a section III-III of FIG. 2 (without cover).

Fig. 1 zeigt die Kartonverbunddose 1 mit einem Deckel 2 und einem Unterteil 3, das in dort nicht näher gezeigter Ausgestaltung aus einer Hülse 4 und einem Boden 5 gebildet ist und bereichsweise konstante Durchmesser D, D' besitzt. Die Kartonverbunddose 1 ist deckelseitig mittels einer Membran 6 verschlossen.Fig. 1 shows the cardboard composite can 1 with a lid 2 and a lower part 3, which is formed in there unspecified embodiment of a sleeve 4 and a bottom 5 and partially constant diameter D, D 'has. The cardboard composite can 1 is closed on the lid side by means of a membrane 6.

Der Ausschnitt II gemäß Fig. 2 zeigt den oberen Abschnitt des Unterteils 3 bzw. der Hülse 4 und die auf ihrer Innenseite angebrachte Innenkaschierung 7, beispielsweise aus Kunststoff,ggf. im Verbund mit einer Metallfolie. Am Öffnungsrand 4a der Hülse 4 ist der Kartonverbund nach außen umgebördelt und verpreßt, so daß eine äußere Lage 8 der Hülse 4 in Parallellage an der Außenseite 9 der Hülse 4 anliegt, wobei die Wandstärke der äußeren Lage 8 zu ihrem Ende 8a hin abnimmt. Die Innenkaschierung 7 verläuft über den so gebildeten Bördel 10 nach außen.The section II according to FIG. 2 shows the upper section of the lower part 3 or the sleeve 4 and the inner lining 7, for example made of plastic, attached on its inside. in combination with a metal foil. At the opening edge 4a of the sleeve 4, the cardboard composite is flanged and pressed to the outside, so that an outer layer 8 of the sleeve 4 rests in a parallel position on the outside 9 of the sleeve 4, wherein the wall thickness of the outer layer 8 decreases towards its end 8a. The inner lining 7 extends over the bead 10 thus formed to the outside.

Im Inneren 11 der Kartonverbunddose 1 ist die Membran 6 unter Bildung einer Siegelfläche 12 mit der Höhe H ringförmig-flächig und trennbar mit der Innenkaschierung 7 des Unterteils 3 bzw. der Hülse 4 verbunden. Die Membran 6 weist eine zungenförmige Ausreißlasche 13 auf, die unterhalb des Deckels 2 ebenfalls im Inneren 11 der Kartonverbunddose 1 angeordnet und nahe dem Öffnungsrand 4a von der Hülsenwand weg nach innen umgelegt ist.In the interior 11 of the cardboard composite box 1, the membrane 6 is ring-flat and separable with the inner layer 7 of the lower part 3 and the sleeve 4 connected to form a sealing surface 12 with the height H. The membrane 6 has a tongue-shaped pull-tab 13 which extends below the tongue Cover 2 is also arranged in the interior 11 of the cardboard composite can 1 and folded away near the opening edge 4a of the sleeve wall inwardly.

Der Deckel 2 der Kartonverbunddose 1 ist im wesentlichen in Form eines flachen Stülpdeckels ausgebildet, dessen Seitenwände auf der Innenseite eine umlaufende Wulst 14 aufweisen, für den die äußere Lage 8 der Hülse 4 ein Widerlager zur rastenden Befestigung des Deckels 2 am Unterteil 3 der Kartonverbunddose 1 bildet.The cover 2 of the cardboard composite can 1 is formed substantially in the form of a flat Stülpdeckels whose side walls on the inside have a circumferential bead 14, for which the outer layer 8 of the sleeve 4 an abutment for latching attachment of the lid 2 on the lower part 3 of the cardboard composite box. 1 forms.

Das Unterteil 3 bzw. die Hülse 4 der Kartonverbunddose 1 weist in einem Bereich 15 unterhalb der Siegelfläche 12 einen sich im wesentlichen kontinuierlich von unten nach oben verengenden Querschnitt mit teilweise S-förmigem Verlauf auf, so daß in Verbindung mit der abnehmenden Wandstärke der äußeren Lage 8 der Hülse 4 und unterhalb dieser eine Nut 16 auf der Außenseite 9 der Hülse 4 gebildet ist, in die die Wulst 14 des Deckels 2 zum Halten des Deckels 2 auf dem Unterteil 3 der Kartonverbunddose 1 rastend eingreift.The lower part 3 and the sleeve 4 of the cardboard composite can 1 in a region 15 below the sealing surface 12 has a substantially continuously narrowing from bottom to top cross section with a partially S-shaped course, so that in conjunction with the decreasing wall thickness of the outer layer 8 of the sleeve 4 and below this a groove 16 is formed on the outside 9 of the sleeve 4, in which the bead 14 of the lid 2 for holding the lid 2 on the lower part 3 of the cardboard composite box 1 engages detent.

Aus dieser Darstellung ist ersichtlich, daß bei der erfindungsgemäßen Kartonverbunddose 1 die das Verpackungsgut (nicht gezeigt) schützende Membran 6 vollständig im Inneren 11 der Kartonverbunddose 1 eingesenkt angeordnet ist, was gegenüber dem bekannten Stand der Technik wesentliche Vorteile mit sich bringt. Die Innenkaschierung 7 wird im Bereich des Bördels 10 insbesondere beim Entfernen der Membran 6 nicht beschädigt, so daß ein dauerhafter Dichtabschluss zwischen Deckel 2 und Innenkaschierung 7 im Bereich des Bördels 10 nach dem Wiederverschließen sichergestellt ist. Die Abtrennung der Membran 6 kann aufgrund der Geometrie und der Haltewirkung der über den Bördel 10 verlaufenden Innenkaschierung 7 durch Zugkräfte in Form eines Peelings erfolgen, wobei die Innenkaschierung 7 völlig unverletzt bleibt.From this representation, it can be seen that in the inventive cardboard composite can 1, the packaging material (not shown) protective membrane 6 is completely recessed in the interior 11 of the cardboard composite box 1, which brings over the prior art, significant advantages. The inner lining 7 is not damaged in the region of the flange 10, in particular when removing the membrane 6, so that a permanent sealing seal between the cover 2 and inner lining 7 in the region of the flange 10 is ensured after resealing. The separation of the membrane 6, due to the geometry and the holding action of the running over the flange 10 inner lining 7 by tensile forces in the form of a peel take place, the inner liner 7 remains completely unhurt.

In der Praxis sind diejenigen Kräfte, welche insbesondere bei flächiger Aufsiegelung der Membran 6 zur abschälenden Entfernung der Membran 6 von der Kartonverbunddose 1 aufzubringen sind, häufig größer als die Adhäsionskräfte des Papier- oder Kartonverbundes, aus dem die Kartonverbunddose 1 an sich bzw. wesentliche Teile 4 davon gebildet sind. Somit besteht beim Heraustrennen einer im Inneren 11 einer Kartonverbunddose angeordneten Membran 6 die Gefahr eines gleichzeitigen Abschälens der Innenkaschierung 7 und damit einer funktionellen Zerstörung der Kartonverbunddose 1. Die erfindungsgemäße Lösung umgeht dieses Problem in konstruktiv einfacher Weise: Aufgrund der nach außen umgelegten Innenkaschierung 7 wird die Ausbildung der Membran 6 zu einer Vollausrißmembran mit großflächiger Aufsiegelung ermöglicht, da aufgrund der Führung der Innenkaschierung 7 bis auf die Außenseite 9 des Unterteils 3 bzw. der Hülse 4 ein Abschälen der Innenkaschierung 7 durch die beim Heraustrennen der Membran 6 auf die Hülsenwände wirkenden Kräfte vermieden wird, und es so zu keiner Zerstörung des Papier- oder Kartonverbundes des Unterteils 3 kommt.In practice, those forces which are to be applied in particular in planar sealing of the membrane 6 for peeling removal of the membrane 6 of the cardboard composite can 1, often greater than the adhesion forces of the paper or cardboard composite, from which the cardboard composite can 1 in itself or essential parts 4 of which are formed. Thus, when separating a arranged inside 11 a cardboard composite box 6 the risk of simultaneous peeling of the inner lining 7 and thus a functional destruction of the cardboard composite box 1. The solution according to the invention circumvents this problem in a structurally simple way: Due to the folded-out inner lining 7 is the Forming the membrane 6 to a Vollausrißmembran with large-area Aufsiegelung allows because due to the leadership of the inner liner 7 except for the outside 9 of the lower part 3 and the sleeve 4 a peeling of the inner lining 7 avoided by acting on the sleeve walls during separation of the membrane 6 forces is, and it comes to no destruction of the paper or cardboard composite of the lower part 3.

Der in Fig. 3 gezeigte Schnitt längs der Linie III-III der Fig. 2 verdeutlicht die erfindungsgemäß einfache Ausgestaltung der Membran 6 mit im Bereich ihres Umfangs 17 angeordneter Ausreißlasche 13. Der Membrandurchmesser vor dem Einbringen in die Hülse 4 ist gegenüber dem Durchmesser D' des Unterteils 3 bzw. der Hülse 4 um ein Maß vergrößert, das im wesentlichen der doppelten Höhe H der Siegelfläche 12 (Fig. 2) entspricht.The section along line III-III of FIG. 2 shown in FIG. 3 illustrates the simple design of the membrane 6 according to the invention with the tear-off tab 13 arranged in the region of its circumference 17. The membrane diameter before insertion into the sleeve 4 is opposite the diameter D '. of the lower part 3 and the sleeve 4 is increased by a dimension which corresponds to substantially twice the height H of the sealing surface 12 (FIG. 2).

Die Membran 6 besteht z.B. aus Aluminium, Kunststoff oder dergleichen und ist als Stanzteil aus einer ebenen Platine mit einer umfangsseitig überstehenden Zunge 13 hergestellt. Um eine möglichst einfache und kostengünstige Herstellung der erfindungsgemäßen Kartonverbunddose 1 zu erreichen, weist die Membran 6 vor dem Einsetzen vorzugsweise eine im wesentlichen der Querschnittsform der Hülse 4 entsprechende Form, d.h. beim gezeigten Ausführungsbeispiel eine Kreisform auf und besitzt einen gegenüber einem Durchmesser D' des Unterteils 3 bzw. der Hülse 4 im Bereich der zu bildenden Siegelfläche 12 vergrößerten Durchmesser. Die Membran 6 wird nach erfolgtem Einsetzen und Hineinformen in die Hülse 4 - beispielsweise mittels eines kombinierten Zieh- und Siegelwerkzeugs (nicht gezeigt) - im Bereich ihres (nach Einbringen in die Hülse 4 nach oben gebogenen) Randbereichs trennbar mit der Innenkaschierung 7 der Hülse 4 verbunden, beispielsweise versiegelt.The membrane 6 consists for example of aluminum, plastic or the like and is as a stamped part of a flat board made with a circumferentially projecting tongue 13. In order to achieve the simplest possible and cost-effective production of the cardboard composite can 1 according to the invention, the membrane 6 before insertion preferably has a substantially the cross-sectional shape of the sleeve 4 corresponding shape, ie in the embodiment shown a circular shape and has a relation to a diameter D 'of the lower part 3 and the sleeve 4 in the region of the sealing surface 12 to be formed enlarged diameter. After insertion and insertion into the sleeve 4, the membrane 6 is separable with the inner lining 7 of the sleeve 4 in the region of its edge region (bent upward after insertion into the sleeve 4), for example by means of a combined drawing and sealing tool (not shown) connected, for example, sealed.

Claims (7)

  1. Cardboard composite can (1) having a paper or cardboard composite sleeve (3) having an inner coating (7) and whose opening edge (4a) is shaped outwards at one end accompanied by the formation of a flange (10), the inner coating (7) passing outwards over the flange (10), with a bottom (5) sealing the sleeve (4) at its other end and a diaphragm (6) sealing the sleeve (4) at the shaped end and which is formed from a stamped blank with a circumferentially projecting tongue (13), the diaphragm (6) being countersunk in sleeve (4) and is sealed to the inner coating (7) exclusively with an annular, sleeve-parallel sealing face (12), characterized in that the projecting tongue is reversed inwards accompanied by the formation of a pull-off tab (13), and that an outer layer (8) of the sleeve (4) engages in a substantially parallel position with the outside (9) of sleeve (4) in the vicinity of flange (10) and the sleeve-parallel sealing face (12).
  2. Cardboard composite can according to claim 1, characterized in that the sleeve (4) has a cross-section narrowing from the bottom to the sealing face (12).
  3. Cardboard composite can according to claim 2, characterized in that the cross-sectional narrowing roughly corresponds to twice the wall thickness (W) of sleeve (4).
  4. Cardboard composite can according to one of the claims 1 to 3, characterized in that the tongue reversed to a pull-off tab (13) is roughly parallel to a lid (2).
  5. Cardboard composite can according to one of the claims 1 to 4, characterized in that the tongue (13) is reversed inwards close to the opening edge (4a) of sleeve (4).
  6. Cardboard composite can according to one of the claims 1 to 5, characterized in that the diaphragm (6) is made from metal.
  7. Cardboard composite can according to one of the claims 1 to 5, characterized in that the diaphragm (6) is made from plastic.
EP03009530A 2003-04-28 2003-04-28 Cardboard composite can Expired - Lifetime EP1473243B1 (en)

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EP03009530A EP1473243B1 (en) 2003-04-28 2003-04-28 Cardboard composite can
DE50303943T DE50303943D1 (en) 2003-04-28 2003-04-28 Cardboard composite can
AT03009530T ATE330861T1 (en) 2003-04-28 2003-04-28 CARDBOARD COMPOSITE CAN

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EP03009530A EP1473243B1 (en) 2003-04-28 2003-04-28 Cardboard composite can

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EP1473243B1 true EP1473243B1 (en) 2006-06-21

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CN101987669B (en) * 2009-08-06 2012-07-04 上海佳田药用包装有限公司 Improved aluminum flexible tube with plastic lining, and manufacturing method and device thereof

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CH207977A (en) * 1937-09-01 1939-12-31 Grassi Luigi Container for substances to be stored away from the action of air.
GB628184A (en) * 1945-10-22 1949-08-24 John Gifferd Bell Improvements in side walls of a container formed of flexible sheet material
CH565079A5 (en) * 1973-06-07 1975-08-15 Zeiler Ag Container closed by membrane - has separate tear-off strip coated with hot sealing plastic attached to membrane
CH593180A5 (en) * 1976-02-11 1977-11-30 Sandherr Max Ag
JPH09509915A (en) * 1994-03-07 1997-10-07 ザ ピルズベリイ カンパニー Container sealing equipment
DE29712611U1 (en) * 1997-07-17 1997-09-18 Weidenhammer Packungen Kg Gmbh & Co, 68766 Hockenheim Combination box with outer eyelet and slip lid
DE20206548U1 (en) * 2002-04-24 2003-05-28 ABRO Weidenhammer GmbH, 68766 Hockenheim Cardboard composite carton has paper or cardboard composite sleeve with inner lining with membrane recessed in sleeve and sealed exclusively on inner lining by annular sealing face parallel to sleeve

Also Published As

Publication number Publication date
DE50303943D1 (en) 2006-08-03
EP1473243A1 (en) 2004-11-03
ATE330861T1 (en) 2006-07-15

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