EP0893354B1 - Method of manufacturing a container made of cardboard and resulting container - Google Patents
Method of manufacturing a container made of cardboard and resulting container Download PDFInfo
- Publication number
- EP0893354B1 EP0893354B1 EP98112753A EP98112753A EP0893354B1 EP 0893354 B1 EP0893354 B1 EP 0893354B1 EP 98112753 A EP98112753 A EP 98112753A EP 98112753 A EP98112753 A EP 98112753A EP 0893354 B1 EP0893354 B1 EP 0893354B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- curled edge
- casing
- edge
- container
- sleeve
- 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
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Classifications
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- 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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
- B65D21/0217—Containers with a closure presenting stacking elements
- B65D21/022—Containers with a closure presenting stacking elements the bottom presenting projecting peripheral elements receiving or surrounding the closure or peripheral elements projecting therefrom
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- 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
- B65D3/28—Other details of walls
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- 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
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- 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
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- 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
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0006—Upper closure
- B65D2251/0018—Upper closure of the 43-type
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- 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
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0068—Lower closure
- B65D2251/0093—Membrane
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- 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
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- 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
- B65D2543/00296—Plastic
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- 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
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- 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
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- 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
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- 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
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- 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 method for manufacturing a can with a sleeve forming the can body a cardboard composite with a barrier layer on the inside and a plastic layer applied thereon is covered by the sleeve on one end face rolled up to a roll flare, then a closure membrane on the upper vertex of the roll flare sealed and on their opposite A bottom is attached to the front after filling the can becomes.
- Cardboard composite boxes of the aforementioned type are often used Packaging of flowable, in particular powdered, granular lumpy or even viscous up pasty foods.
- the cardboard box must be tight, depending on the type of filling liquid or even Gas tightness is required.
- the sleeve is usually by winding an endless web of material or one the length of the sleeve tailored material cut manufactured. In the former case, is generated from the Winding tube the sleeve by a cutting process Cut to length.
- the tightness of the sleeve is thereby ensures that on the mostly multilayered layer Recycled cardboard a barrier layer, e.g. a metal, especially aluminum foil, which is in turn laminated is covered by a thin layer of plastic.
- the overlapping are along the seam Edges of the material web or the material blank tightly connected by sealing.
- the sleeve On the end face forming the later removal opening the sleeve is rolled outwards to form a rolling flange, to keep the cutting edge of the sleeve and
- the plastic coating on the outside of the roll flare a sealing membrane, which on the inside with a appropriate plastic is coated, seal to can. This should also be in the area of the removal opening a gas and liquid-tight originality seal be preserved. In practice, however, show up in the area the sealed membrane very often Leaks during the after filling on the floor attached to the opposite end without problems is tight.
- the invention is based on the problem, the beginning mentioned method for the production of cardboard composite cans to develop further in the area of sealed Sealing membrane an equally good gas and Liquid tightness, as in the rest of the area the sleeve is reached.
- the sleeve at one end on a length that is larger than the circumference of the rolling flange, inside is conically molded so far that the outer diameter in the area of the retracted front edge by about twice of the diameter of the rolling flange is smaller than the outer diameter of the sleeve, that subsequently the Front rolled up to the roll flare and then the sealing membrane is sealed.
- the sleeve is one length molded inwards conically, which is about double the Corresponds to the circumference of the rolling flange.
- a manufactured by the method according to the invention Can made of cardboard composite is characterized in that the Sleeve on the roll flare has an outer diameter that about the outer diameter of the sleeve in the undeformed Area corresponds so that none projecting beyond the sleeve Areas are available that are transporting and Handling those not yet equipped with the floor Sleeve during the manufacturing process or in the bottling plant would hinder.
- the cans can be in roll in a linear direction, close together in both the circumferential and axial direction without mutual Move disability.
- the closed part shown in Fig. 1 in section Box consists of a sleeve 1, which consists of a multilayer cardboard is made, a bottom 2, a membrane 3 and a cover 4 which is slipped over the removal opening.
- FIG. 2 shows the edge folded outwards in the form of a rolling flange 5 the sleeve, which is rolled up essentially circular is, so that the cutting edge 6 in the protected Inner area of the roller flange 5 is located.
- the sleeve 1 has a lamination 7 on its inside from a barrier layer, e.g. Metal foil, and one inner plastic layer covered by a film or a paint finish is obtained consequently lies on the outside of the rolling flange 5.
- a barrier layer e.g. Metal foil
- a flat sealing membrane 3 e.g. a board made of cardboard, paper or metal foil, sealed on the inside of a corresponding Has plastic lamination.
- the sealed one Sealing membrane 3 forms a tight tamper-evident seal.
- the sleeve 1 In the area of the removal opening, the sleeve 1 is on the inside retracted so that the roll flare on its outside approximately aligned with the jacket of the sleeve 1.
- the slip lid 4, which overlaps the rolling flange 5, is approximately in alignment with the outside of the bottom 2.
- the slip lid 4 has on the inside of its wall 9 an annular bead 10, with which he the rolling flange 5 clicks over. Starting from the ring bead is the Inside of the wall 9 to the outside and to the lower edge 11 beveled towards such that the bevel 12 approximately parallel runs to retract the sleeve.
- the lid has a top annular rib 13 as a stacking edge, which allows several layers of filled cans secure to be arranged one above the other, for example in order to Palletizing transport.
- the membrane 3 can also be fitted with the slip lid 4 be connected so that when you first open the slip lid at the same time the membrane is removed.
- Fig. 3 shows the non-deformed by a winding tube to the desired size Sleeve 1.
- the sleeve 1 is in a first deformation step in the area of its one end face 13, which the later removal opening forms conical over a length L. molded inwards (Fig. 4).
- Fig. 4 the later removal opening forms conical over a length L. molded inwards
- Fig. 5 the sleeve 1 is in the region of its end face 13 rolled out to the roll flare 5, a Conical section with length 1 remains (Fig. 5).
- the length L corresponds to approximately twice the circumference of the Rolling flange 5, so that the remaining conical length 1 again corresponds approximately to the circumference of the rolling flange 5.
- Fig. 6 shows a detail of the processing Inside of the sleeve 1. It is the screw-shaped Winding an endless web of overlapping lines 14 between the side by side Composite cardboard sheets recognizable. Along these overlaps the webs are sealed together by sealing connected.
- FIG. 6 shows the sleeve in the undeformed state according to FIG. 3.
- a closed plastic lamination is present with the lamination of the closure membrane 3 is sealed by sealing.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Dose mit einer den Dosenrumpf bildenden Hülse aus einem Kartonverbund, der innenseitig durch eine Sperrschicht und eine darauf aufgebrachte Kunststoffschicht abgedeckt ist, indem die Hülse an ihrer einen Stirnseite zu einen Rollbördel nach außen eingerollt, anschließend auf dem oberen Scheitel des Rollbördels eine Verschlußmembran aufgesiegelt und an ihrer gegenüberliegenden Stirnseite nach dem Befüllen der Dose ein Boden befestigt wird.The invention relates to a method for manufacturing a can with a sleeve forming the can body a cardboard composite with a barrier layer on the inside and a plastic layer applied thereon is covered by the sleeve on one end face rolled up to a roll flare, then a closure membrane on the upper vertex of the roll flare sealed and on their opposite A bottom is attached to the front after filling the can becomes.
Kartonverbunddosen der vorgenannten Art werden häufig zur Verpackung von fliessfähigen, insbesondere pulverförmigen, körnigen stückigen oder auch zähfliessenden bis teigigen Nahrungsmitteln eingesetzt. Zur Qualitätssicherung des Füllgutes muß die Kartonverbunddose dicht sein, wobei je nach Art des Füllgutes Flüssigkeits- oder gar Gasdichtheit gefordert wird. Die Hülse wird in der Regel durch Wickeln einer endlosen Materialbahn oder eines auf die Länge der Hülse abgestimmten Materialzuschnittes hergestellt. Im erstgenannten Fall wird von dem erzeugten Wickelrohr die Hülse durch einen Schneidvorgang auf Wunschmaß abgelängt. Die Dichtheit der Hülse wird dadurch gewährleistet, daß auf die meist mehrlagige Schicht aus Recyclingkarton eine Sperrschicht, z.B. eine Metall-, insbesondere Aluminiumfolie, aufkaschiert ist, die wiederum von einer dünnen Kunststoffschicht abgedeckt ist. Entlang der Wickelnaht sind die einander überlappenden Ränder der Materialbahn bzw. des Materialzuschnittes durch Siegeln dicht verbunden.Cardboard composite boxes of the aforementioned type are often used Packaging of flowable, in particular powdered, granular lumpy or even viscous up pasty foods. For quality assurance of the contents, the cardboard box must be tight, depending on the type of filling liquid or even Gas tightness is required. The sleeve is usually by winding an endless web of material or one the length of the sleeve tailored material cut manufactured. In the former case, is generated from the Winding tube the sleeve by a cutting process Cut to length. The tightness of the sleeve is thereby ensures that on the mostly multilayered layer Recycled cardboard a barrier layer, e.g. a metal, especially aluminum foil, which is in turn laminated is covered by a thin layer of plastic. The overlapping are along the seam Edges of the material web or the material blank tightly connected by sealing.
An der die spätere Entnahmeöffnung bildenden Stirnseite wird die Hülse zu einem Rollbördel nach außen eingerollt, um einerseits die Schnittkante der Hülse zu verwahren und vor Feuchtigkeitszutritt zu schützen, andererseits auf die am Rollbördel außen liegende Kunststoffbeschichtung eine Verschlußmembran, die an ihrer Innenseite mit einem entsprechenden Kunststoff beschichtet ist, aufsiegeln zu können. Dadurch soll auch im Bereich der Entnahmeöffnung ein gas- und flüssigkeitsdichter Orginalitätsverschluß erhalten werden. In der Praxis zeigen sich aber im Bereich der angesiegelten Verschlußmembran sehr häufig Undichtigkeiten, während der nach dem Abfüllen auf der gegenüberliegenden Stirnseite angebrachte Boden problemlos dicht zu bekommen ist.On the end face forming the later removal opening the sleeve is rolled outwards to form a rolling flange, to keep the cutting edge of the sleeve and To protect against moisture, on the other hand the plastic coating on the outside of the roll flare a sealing membrane, which on the inside with a appropriate plastic is coated, seal to can. This should also be in the area of the removal opening a gas and liquid-tight originality seal be preserved. In practice, however, show up in the area the sealed membrane very often Leaks during the after filling on the floor attached to the opposite end without problems is tight.
Bei Blechdosen mit grundsätzlich ähnlichem Aufbau (EP 0 806 370, veröffentlicht an 12.11.1997) wird die Blechzarge nach dem Anrollen des Rollbördels in einen flüssigen Kunststoff eingetaucht. Dieser Kunststoff erhärtet dann in einer größeren, schlecht kontrollierbaren Dicke auf dem Rollbördel aus. Auf diese relativ dicke Kunststoffschicht wird die Verschlußmembran aufgesiegelt. Dieses Verfahren erfordert mit dem gesonderten Tauchvorgang einen zusätzlichen Verfahrensschritt und ist zudem zeitaufwendig, da das Polymerisieren der Kunststoffschicht abgewartet werden muß. Bei Entfernen der Verschlußmembran verbleiben unregelmäßige Kunststoffreste an dem Bördel und können abreißende Kunststoffpartikel in das Füllgut fallen, was bei Nahrungsmitteln nicht der Fall sein darf.For tin cans with a fundamentally similar structure (EP 0 806 370, published on November 12, 1997) the sheet metal frame becomes after the rolling flare has rolled on immersed in a liquid plastic. This Plastic then hardens in a larger, bad controllable thickness on the roll flare. To this the sealing membrane becomes a relatively thick plastic layer sealed. This procedure requires with the separate An additional process step and is also time consuming because the polymerizing of Plastic layer must be waited for. When removing Irregular plastic residues remain in the sealing membrane on the flare and can tear off plastic particles fall into the filling, what with food may not be the case.
Bei Kartonverbunddosen sind die unerwarteten Undichtigkeiten im Bereich der aufgesiegelten Membran vermutlich darauf zurückzuführen, daß beim Einrollen des Rollbördels nach außen aufgrund der Streckung des Materials die Kunststoffkaschierung ausgedünnt wird oder gar reißt. Ebenso kann es zum Einreißen der Sperrschicht kommen.In the case of composite boxes, there are unexpected leaks probably in the area of the sealed membrane to be attributed to the fact that when rolling in the roll flare outwards due to the stretching of the material Plastic lamination is thinned out or even tears. The barrier layer can also tear.
Der Erfindung liegt die Aufgabe zugrunde, das eingangs genannte Verfahren zur Herstellung von Kartonverbunddosen dahingehend weiterzuentwickeln, daß im Bereich der aufgesiegelten Verschlußmembran eine gleichgute Gas- und Flüssigkeitsdichtheit, wie im gesamten übrigen Bereich der Hülse, erreicht wird.The invention is based on the problem, the beginning mentioned method for the production of cardboard composite cans to develop further in the area of sealed Sealing membrane an equally good gas and Liquid tightness, as in the rest of the area the sleeve is reached.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Hülse an ihrer einen Stirnseite auf einer Länge, die größer ist als der Umfang des Rollbördels, nach innen konisch soweit eingeformt wird, daß der Außendurchmesser im Bereich der eingezogenen Stirnkante um etwa das Doppelte des Durchmessers des Rollbördels kleiner ist als der Außendurchmesser der Hülse, daß anschließend die Stirnseite zu dem Rollbördel nach außen eingerollt und daraufhin die Verschlußmembran aufgesiegelt wird. This object is achieved in that the sleeve at one end on a length that is larger than the circumference of the rolling flange, inside is conically molded so far that the outer diameter in the area of the retracted front edge by about twice of the diameter of the rolling flange is smaller than the outer diameter of the sleeve, that subsequently the Front rolled up to the roll flare and then the sealing membrane is sealed.
Durch das konische Einformen der Hülse im Bereich ihrer einen Stirnseite, die im Endzustand die Entnahmeöffnung bildet, findet eine Durchmesserreduzierung statt, so daß das Kartonverbundmaterial einschließlich der innenseitigen Kaschierung aus Sperrschicht und Kunststoffbeschichtung in Umfangsrichtung gestaucht wird. Es bilden sich kleinste, gleichmäßig auf dem Umfang verteilte Falten. Beim anschließenden Umformen der eingezogenen Stirnseite nach außen und Bildung des Rollbördels kann sich das Material aus den Falten nachziehen, so daß insbesondere ein Reißen der Metallfolie oder Aufreißen der Kunststoffkaschierung im Bereich des Bördels und insbesondere in dem der Entnahmeöffnung nahen Bereichen wirksam vermieden wird. Im Bereich des oberen Scheitels des Rollbördels bleibt eine geschlossene Kunststoffkaschierung erhalten, die wiederum die Voraussetzung dafür schafft, daß die Verschlußmembran in ihrem Randbereich einwandfrei auf den Bördel aufgesiegelt werden kann und eine rundum geschlossene Siegelnaht entsteht. Es kommt weder zu Fehlstellen in der Siegelnaht und es sind auch keine unerwünschten Kunststoffanhäufungen vorhanden. Die solchermaßen hergestellte Kartonverbunddose ist auch im Bereich der Verschlußmembran gas- und flüssigkeitsdicht verschlossen.By conically shaping the sleeve in the area of their an end face, which in the final state is the removal opening forms, there is a reduction in diameter, so that the cardboard composite material including the inside Laminating from barrier layer and plastic coating is compressed in the circumferential direction. It is formed smallest folds evenly distributed over the circumference. During the subsequent reshaping of the front face to the outside and formation of the roll flare can Pull material out of the folds so that in particular tearing of the metal foil or tearing of the plastic lamination in the area of the flare and in particular in the areas near the removal opening are effectively avoided becomes. In the area of the upper vertex of the roll flare a closed plastic liner is retained, which in turn creates the conditions for the Sealing membrane in its edge area perfectly on the Bead can be sealed and a completely closed Sealing seam is created. There are no defects in the sealed seam and there are also no unwanted ones Plastic accumulations available. The one made in this way Cardboard composite box is also in the area of the sealing membrane sealed gas and liquid tight.
In bevorzugter Ausführung wird die Hülse auf einer Länge nach innen konisch eingeformt, die etwa dem Doppelten des Umfangs des Rollbördels entspricht.In a preferred embodiment, the sleeve is one length molded inwards conically, which is about double the Corresponds to the circumference of the rolling flange.
Durch diese Maßnahme wird die Erfindungsaufgabe in besonders günstiger Weise gelöst. Darüber hinaus kann die Konizität des Einzugs an der Stirnseite der Hülse so gewählt werden, daß der Rollbördel etwa in Flucht des Mantels der Hülse liegt und diese nicht nach außen überragt, was für Transport und Lagerung der mit der Verschlußmembran verschlossenen Hülsen günstig ist. Auf der anderen Seite ist der konische Einzug relativ steil, so daß der nach innen eingezogene Rand der Hülse das Auslaufen des Füllgutes beim Entleeren der Dose nicht behindert.This measure makes the task of the invention particularly special solved in a favorable way. In addition, the Taper of the indentation on the face of the sleeve so be chosen so that the roller flare is in line with the Jacket of the sleeve and does not protrude from the outside, what transport and storage of the with the sealing membrane closed sleeves is cheap. On the on the other hand, the conical indentation is relatively steep, so that the inwardly drawn edge of the sleeve will leak the contents are not hindered when emptying the can.
Eine nach dem erfindungsgemäßen Verfahren hergestellte Dose aus Kartonverbund zeichnet sich dadurch aus, daß die Hülse am Rollbördel einen Außendurchmesser aufweist, der etwa dem Außendurchmesser der Hülse im unverformten Bereich entspricht, so daß keine die Hülse überragenden Bereiche vorhanden sind, die das Transportieren und Handling der noch nicht mit dem Boden ausgestatteten Hülse während des Fertigungsprozesses oder auch im Abfüllbetrieb behindern würden. Die Dosen lassen sich in linearer Richtung rollen, in dichter Anlage aneinander sowohl in Umfangs- als auch Achsrichtung ohne gegenseitige Behinderung bewegen.A manufactured by the method according to the invention Can made of cardboard composite is characterized in that the Sleeve on the roll flare has an outer diameter that about the outer diameter of the sleeve in the undeformed Area corresponds so that none projecting beyond the sleeve Areas are available that are transporting and Handling those not yet equipped with the floor Sleeve during the manufacturing process or in the bottling plant would hinder. The cans can be in roll in a linear direction, close together in both the circumferential and axial direction without mutual Move disability.
Wie an sich bekannt, dient zum Wiederverschluß nach dem Aufreißen der Verschlußmembran ein Stülpdeckel, der an seinem den Rollbördel übergreifenden Rand innenseitig eine den Rollbördel rastens untergreifende, ringförmige Nase aufweist.As is known per se, serves to reclose after Tear open the sealing membrane with a slip lid its rim overlapping the roll flange on the inside a ring-shaped, engaging underneath the roller flange Has nose.
Nachstehend ist die Erfindung anhand eines in der Zeichnung wiedergegebenen Ausführungsbeispiels beschrieben. In der Zeichnung zeigen:
- Fig. 1
- eine Kartonverbunddose mit Stülpdeckel, teilweise in Seitenansicht, teilweise im Axialschnitt;
- Fig. 2
- das Detail "X" in Fig. 1 in vergrößertem Maßstab;
- Fig. 3-5
- verschiedene Fertigungsstufen der Hülse aus Kartonverbund in schematischer Ansicht;
- Fig. 6-8
- eine abgewickelte Innenansicht der Hülse in den drei Fertigungsstufen gemäß Fig. 3-5.
- Fig. 1
- a composite cardboard box with slip lid, partly in side view, partly in axial section;
- Fig. 2
- the detail "X" in Figure 1 on an enlarged scale.
- Fig. 3-5
- different manufacturing stages of the sleeve made of cardboard composite in a schematic view;
- Fig. 6-8
- a developed inner view of the sleeve in the three manufacturing stages according to FIGS. 3-5.
Die in Fig. 1 teilweise im Schnitt dargestellte verschlossene
Dose besteht aus einer Hülse 1, die aus einem
mehrlagigem Wickelkarton hergestellt ist, einem Boden 2,
einer die Entnahmeöffnung verschließenden Membran 3 und
einem Deckel 4 der über die Entnahmeöffnung gestülpt ist.The closed part shown in Fig. 1 in section
Box consists of a
Die vergrößerte Detail-Darstellung gemäß Fig. 2 zeigt den
nach außen in Form eines Rollbördels 5 umgelegten Rand
der Hülse, der im wesentlichen kreisförmig eingerollt
ist, so daß sich die Schnittkante 6 in dem geschützten
Innenbereich des Rollbördels 5 befindet.The enlarged detail view according to FIG. 2 shows the
edge folded outwards in the form of a
Die Hülse 1 weist auf ihrer Innenseite eine Kaschierung 7
aus einer Sperrschicht, z.B. Metallfolie, und einer
innenliegenden Kunststoffschicht, die durch eine Folie
oder eine Lackierung erhalten wird, auf.Die Kaschierung
liegt folglich an der Außenseite des Rollbördels 5.The
Auf den Rollbördel ist eine ebene Verschlußmembran 3,
z.B. eine Platine aus Karton, Papier oder Metallfolie,
aufgesiegelt, die auf ihrer Innenseite eine entsprechende
Kunststoff- Kaschierung aufweist. Die aufgesiegelte
Verschlußmembran 3 bildet einen dichten Originalitätsverschluß. On the roll flare there is a
Im Bereich der Entnahmeöffnung ist die Hülse 1 nach innen
eingezogen, so daß der Rollbördel an seiner Außenseite
etwa mit dem Mantel der Hülse 1 fluchtet. Der Stülpdeckel
4, der den Rollbördel 5 übergreift, liegt etwa in Flucht
mit der Außenseite des Bodens 2.In the area of the removal opening, the
Der Stülpdeckel 4 weist an der Innenseite seiner Wandung
9 einen Ringwulst 10 auf, mit dem er den Rollbördel 5
rastend übergreift. Von dem Ringwulst ausgehend ist die
Innenseite der Wandung 9 nach außen und zur Unterkante 11
hin abgeschrägt, derart, daß die Schräge 12 etwa parallel
zum Einzug der Hülse verläuft.The slip lid 4 has on the inside of its wall
9 an
Schließlich weist der Deckel an seiner Oberseite eine
ringförmige Rippe 13 als Stapelkante auf, die es gestattet,
mehrere Lagen von abgefüllten Dosen lagesicher
übereinander anzuordnen, beispielsweise um sie für den
Transport palletieren zu können.Finally, the lid has a top
Die Membran 3 kann zusätzlich mit dem Stülpdeckel 4
verbunden sein, so daß beim erstmaligen Öffnen des Stülpdeckels
zugleich die Membran abgezogen wird.The
In Fig. 3 bis 5 ist die Hülse 1 in verschiedenen Stufen
des Fertigungsprozesses wiedergegeben. Fig. 3 zeigt die
von einem Wickelrohr auf Wunschmaß abgelängte, unverformte
Hülse 1. Die Hülse 1 wird in einem ersten Verformungsschritt
im Bereich ihrer einen Stirnseite 13, welche die
spätere Entnahmeöffnung bildet, auf einer Länge L konisch
nach innen eingeformt (Fig. 4). In einem weiteren Verformungsschritt
wird die Hülse 1 im Bereich ihrer Stirnseite
13 nach außen zu dem Rollbördel 5 eingerollt, wobei ein
konischer Abschnitt mit der Länge 1 verbleibt (Fig. 5). 3 to 5, the
Die Länge L entspricht etwa dem doppelten Umfang des
Rollbördels 5, so daß die verbleibende konische Länge 1
wiederum etwa dem Umfang des Rollbördels 5 entspricht.The length L corresponds to approximately twice the circumference of the
Fig. 6 zeigt in einer Abwicklung einen Ausschnitt auf die
Innenseite der Hülse 1. Es sind die durch das schraubenförmige
Wickeln einer Endlosbahn entstehenden Überlappungslinien
14 zwischen den nebeneinander liegenden
Kartonverbundbahnen erkennbar. Entlang dieser Überlappungen
sind die Bahnen miteinander durch Siegeln dicht
verbunden.Fig. 6 shows a detail of the processing
Inside of the
Fig. 6 zeigt die Hülse im unverformten Zustand gemäß Fig.
3. Beim konischen Einformen der Hülse 1 im Bereich der
einen Stirnseite 13 bilden sich an der Innenseite der
Hülse Falten aus, die entsprechend dem konischen Einzug
zur Stirnkante hin aufeinander zulaufen (Fig. 7). Diese
Falten, denen auch die Innenkaschierung mit der Sperrschicht
und der Kunststoffbeschichtung folgt, dienen als
Materialreserve bei der anschließenden Ausbildung des
Rollbördels 5 (Fig. 8). Da hierbei die Hülse im Bereich
ihrer Stirnseite 13 wieder aufgeweitet wird, kann das
Material einschließlich der Kaschierung beim Umbördeln
aus den Falten nachgezogen werden, so daß die Kaschierung
nicht reißt und insbesondere auf dem oberen Scheitel des
Rollbördels (Fig. 2) eine geschlossene Kunststoffkaschierung
vorhanden ist, mit der die Kaschierung der Verschlußmembran
3 durch Siegeln dicht verbunden wird.6 shows the sleeve in the undeformed state according to FIG.
3. When conically shaping the
Claims (4)
- Method for the production of a container having a casing (1) constituting the container body made from composite carton covered at its inner side with a blocking layer (7) and a plastic coating deposited thereon, in which the casing is rolled over in an outward direction at one of its ends to form a curled edge (5) and, subsequently, a sealing membrane (3) is sealed onto the upper crown of the curled edge and, after filling of the container, a bottom (2) is attached to the opposite end, characterized in that the casing (1) is shaped at its one end in an inwardly tapered fashion along a length which is larger than the circumference of the curled edge (5) and to a sufficient extent that the outer diameter in the vicinity of the tapered end edge is smaller by approximately twice the diameter of the curled edge than the outer diameter of the casing and, subsequently, the end is rolled over in an outward direction to form a curled edge and is then sealed with the sealing membrane (3).
- Method according to claim 1, characterized in that the casing is conically tapered inwardly along a length (L) corresponding to approximately twice the circumference of the curled edge.
- Composite container carton, having a container body and a curled edge (5) which is rolled over in an outward direction, produced according to the method of claim 1 or 2, characterized in that the casing has a conical section disposed below the curled edge whose length (I) approximately corresponds to the circumference of the curled edge, and the casing (1) has an outer diameter at the curled edge (5) corresponding approximately to the outer diameter of the casing (1) in the non-shaped region.
- Composite container carton according to claim 3, characterized in that a slip lid (4) serves for reclosure having a ring bead (10) disposed at the inside of that edge (11) engaging the curled edge (5) which snaps beneath the curled edge (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29712611U DE29712611U1 (en) | 1997-07-17 | 1997-07-17 | Combination box with outer eyelet and slip lid |
DE29712611U | 1997-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0893354A1 EP0893354A1 (en) | 1999-01-27 |
EP0893354B1 true EP0893354B1 (en) | 2003-10-08 |
Family
ID=8043227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98112753A Expired - Lifetime EP0893354B1 (en) | 1997-07-17 | 1998-07-09 | Method of manufacturing a container made of cardboard and resulting container |
Country Status (3)
Country | Link |
---|---|
US (1) | US6176069B1 (en) |
EP (1) | EP0893354B1 (en) |
DE (2) | DE29712611U1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2803793B1 (en) * | 2000-01-18 | 2002-11-29 | Georges Sireix | METHOD FOR MANUFACTURING A STYLING LID FOR TUBULAR PACKAGING AND LID MANUFACTURED BY IMPLEMENTING THE METHOD |
EP1127809A3 (en) * | 2000-02-24 | 2002-03-13 | Alcan Technology & Management AG | Package with tearing lid |
EP1127808A1 (en) * | 2000-02-24 | 2001-08-29 | Alusuisse Technology & Management AG | Package with sealable lid |
JP3636052B2 (en) * | 2000-09-25 | 2005-04-06 | サンスター技研株式会社 | Method for producing soft container and high viscosity liquid filler |
EP1473243B1 (en) * | 2003-04-28 | 2006-06-21 | ABRO Weidenhammer GmbH | Cardboard composite can |
DE102004026186A1 (en) * | 2004-05-28 | 2005-12-29 | Abro Weidenhammer Gmbh | Cardboard composite can |
US20080282904A1 (en) * | 2005-01-12 | 2008-11-20 | Xiaoyong Liu | Automatic or Semi-Automatic Turning Method and Device |
CA2898810C (en) | 2014-08-01 | 2017-01-03 | Nicolas Bouveret | Anti-depression plastic container |
CN104441784A (en) * | 2014-10-21 | 2015-03-25 | 东莞市鹏诚包装制品有限公司 | Process for manufacturing paperboard bucket |
CN104295798A (en) * | 2014-10-31 | 2015-01-21 | 向荣集团有限公司 | Cable bridge easy to install |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2248534A (en) * | 1937-04-26 | 1941-07-08 | Meyer-Jagenberg Gunther | Method of making paper containers |
IE70303B1 (en) * | 1992-04-22 | 1996-11-13 | Fibre Drums Ireland Limited | A process and apparatus for manufacturing a fibre drum |
FR2736584B1 (en) * | 1995-07-12 | 1997-09-26 | Petit Georges Ets Sa | PROCESS FOR MANUFACTURING A KRAFT CARDBOARD FUT |
DE59701928D1 (en) | 1996-05-06 | 2000-08-03 | Siegfried Frei | Containers |
-
1997
- 1997-07-17 DE DE29712611U patent/DE29712611U1/en not_active Expired - Lifetime
-
1998
- 1998-07-09 EP EP98112753A patent/EP0893354B1/en not_active Expired - Lifetime
- 1998-07-09 DE DE59809846T patent/DE59809846D1/en not_active Expired - Lifetime
- 1998-07-10 US US09/113,159 patent/US6176069B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6176069B1 (en) | 2001-01-23 |
DE59809846D1 (en) | 2003-11-13 |
DE29712611U1 (en) | 1997-09-18 |
EP0893354A1 (en) | 1999-01-27 |
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