EP0921985A1 - Procede pour produire un recipient rempli - Google Patents

Procede pour produire un recipient rempli

Info

Publication number
EP0921985A1
EP0921985A1 EP97935448A EP97935448A EP0921985A1 EP 0921985 A1 EP0921985 A1 EP 0921985A1 EP 97935448 A EP97935448 A EP 97935448A EP 97935448 A EP97935448 A EP 97935448A EP 0921985 A1 EP0921985 A1 EP 0921985A1
Authority
EP
European Patent Office
Prior art keywords
weakening
container
severing
closure part
takes place
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97935448A
Other languages
German (de)
English (en)
Other versions
EP0921985B1 (fr
Inventor
Jürgen LUTTMANN
Rolf Hornig
Gebhard Kregel
Bernd Albrecht
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.)
Mars Inc
Original Assignee
Effem 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
Priority claimed from DE19629148A external-priority patent/DE19629148C2/de
Application filed by Effem GmbH filed Critical Effem GmbH
Publication of EP0921985A1 publication Critical patent/EP0921985A1/fr
Application granted granted Critical
Publication of EP0921985B1 publication Critical patent/EP0921985B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/402—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in the side wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing

Definitions

  • the invention relates to a method for producing a filled, closed, sterilized container consisting of at least one fuselage body and at least one closure part, which can be opened without the aid of tools, and a container which can be produced by the method.
  • Containers in general and packaging in particular (the term “container” being used in a general sense below) which can be opened without the aid of tools such as knives, can openers etc., i.e. So-called easy-open systems have become increasingly important in recent years due to the significant simplification of handling by the consumer.
  • So-called ring pull lids are used to a large extent, particularly in the case of can-like packaging in the food or animal feed sector.
  • metal as Base material there is in many cases, especially when using metal as Base material, the risk of sharp edges occurring after opening the can.
  • the invention is therefore based on the object of developing the generic method in such a way that the disadvantages of the prior art can be avoided and an easy-open system is made available without the risk of inadvertent destruction of the filled container during the sterilization process.
  • this object is achieved in a generic method in that after filling with the intended container content, sterilization-resistant closure and sterilization of the container at temperatures which are sufficient to preserve the container content, a weakening of the connection between predetermined container parts or those defined by this method step in the way is that these container parts can be separated without the use of tools.
  • the container wall is weakened or severed.
  • the base material of the container wall is weakened or severed.
  • the material different from the base material of the container is an adhesive material.
  • weakening or severing takes place in the area of the trunk body.
  • the fuselage body is weakened or severed in an area adjacent to the closure part.
  • the body of the container in the area of weakening or severing of the container wall is backed on its inside with a sealing material that runs essentially completely around the circumference of the body.
  • the fuselage body is provided with sealing material in the area of the deposit with at least two, essentially horizontal beads.
  • the weakening or severing of the fuselage takes place between two beads.
  • the weakening or severing of the trunk body takes place on one of the beads.
  • at least three beads are provided and the fuselage body is weakened or severed on the central bead.
  • the deposited sealing material extends into the intermediate area between the fuselage body and the closure part.
  • closure part is weakened or severed in the region of a fold of the closure part.
  • a suitable plastic is used as the sealing material.
  • the invention proposes that the edge region of the closure part is not releasably connected to the outside of the outer surface of the body of the container.
  • the invention proposes that an interlocking thread is provided for opening the container both in the fuselage body and in the closure part.
  • the interlocking thread is arranged above the weakening or severing line.
  • the invention proposes that the interlocking thread is arranged below the weakening or severing line.
  • the weakening or severing of the container wall takes place by mechanical cutting.
  • the weakening or severing of the container wall takes place by means of laser technology.
  • a corrosion surface treatment of the cut surface is carried out after the weakening or severing of the container wall.
  • the weakening or severing of the container wall takes place on an essentially horizontal circumferential line.
  • the weakening or severing of the container wall takes place on an undulating line.
  • the invention proposes that the connection between the fuselage body and the closure part be weakened.
  • the invention proposes that an essentially completely circumferential deformation takes place in the region of the fold which connects the body of the body and the closure part.
  • the deformation takes place in such a way that the angle of the plane in which the radially outermost contact surfaces of the fuselage body and the closure part extend is changed such that a separation between the fuselage body and the closure part is made possible without the aid of tools .
  • the plane in which the radially outermost contact surfaces of the fuselage body and the closure part run after the deformation is substantially parallel to the wall of the fuselage body.
  • a coating that is at least partially deformable under pressure and possibly heat is provided on the inside of the fuselage body and / or on the inside of the closure part, at least in the area in which the fuselage body or closure part are in contact with one another in the closed container.
  • a polypropylene homopolymer or copolymer is used as the material for the coating.
  • the filled container is closed with a sealing part made of heat-sealable lacquered aluminum, plastic or a corresponding composite material before the same is closed with the closure part.
  • the invention also relates to a container which can be produced by the method according to the invention.
  • the container is a can-like packaging.
  • closure part can mean any type of container closure, depending on the shape of the container and the type of filling and closure of the container.
  • the closure part can therefore be, for example, the cover body or the base part, reference being made largely to the cover body below for illustration purposes.
  • the weakening or severing of the container can be a weakening or severing of the base material of the container wall, for example the metal from which the can is made.
  • the base material for example the body of the metal can, can be severed all round in an upstream step, whereupon the two parts of the container are reassembled using a material different from the base material, such as a sterilization-resistant adhesive material. In this way, an area can be created in which the intended weakening or severing of the container wall can be carried out more easily as a final step after sterilization of the sealed can can as the base material of the container wall itself.
  • a sealing material for example a strip of appropriate plastic material, in the area of the inner wall of the fuselage body provided for this purpose. which continues to ensure a secure sterile closure of the container in this area after the final weakening or severing of the body.
  • the weakening or severing affects the cover body
  • a backing of the body with a sealing material is not required if the said weakening takes place in the area of the fold of the cover body and more precisely only affects the part of the fold , which is provided by the lid body.
  • the safety of the sterile closure of the packaging is ensured in this case by the sealant usually introduced between the hull body on the one hand and the folding component provided by the cover body on the other hand, which remains functional even after the weakening or severing according to the invention in the region of the fold of the cover body and ensures a secure sterile closure.
  • a sealing material for example a strip of appropriate plastic material, can also be applied in the area of the weakening or severing to cover the weakening or severing line.
  • cover body is placed or fastened across the body of the body so that the inside of the cover body is at least partially in contact with the outside of the body part and the edge region of the lid body is not detachably connected to the outside, for example by soldering.
  • the weakening or severing of the container wall can take place in any manner, with particular attention being given to circumferential mechanical cutting or the use of laser technology. In order to avoid corrosion in the cutting area, it is preferably provided to subject this area to a final surface corrosion treatment.
  • a copolymer of polypropylene and polyethylene which is provided on the inside of the body of the body and / or the lid of the container, is compressed when the container is closed with the lid and under this pressure and if necessary deformed additional heat and thus forms a further sealing closure of the interior of the container.
  • the inner coating provided in this embodiment has the advantage that - if the lid body is to be closed again after the can has been opened and partially emptied - a tighter closure is possible.
  • a weakening of the connection between the fuselage body and the closure part, such as the cover part is provided.
  • This weakening preferably takes place in that essentially all around there is a deformation in the region of the fold which connects the body of the body and the closure part.
  • This deformation must be carried out in such a way that there is still a sufficiently firm closure between the body of the body and the closure part, which, however, no longer has to have the strength to withstand the internal pressures during sterilization, since the corresponding method step is only provided according to the invention after sterilization.
  • FIG. 9 is a schematic overall view of the partial cross-sectional view of the can-like packaging shown in FIG. 5;
  • FIG. 10 is a schematic overall view of the partial cross-sectional view of the can-like packaging shown in FIG. 7;
  • FIG. 11 shows an overall schematic representation of the partial cross-sectional view of the can-like packaging shown in FIG. 8;
  • FIG. 14 shows the fold area of a can before the deformation step according to the invention and two alternatives for deformation in the fold area.
  • the can body is denoted by 10 and the lid crimped thereon by 20.
  • FIG. 1 In a first embodiment (FIG. 1), in the upper region of the can body 10, just below the lid 20, the inner Wall of the can body with a circumferential strip 30 of sealing material, preferably made of plastic, deposited. At 11, a weakening or severing of the can body is shown. The weakening at this point must be sufficient so that when the upper section 10 'of the can body is twisted relative to one another together with the lid 20 against the lower part 10 "of the can body, these separate from one another over the entire circumference of the can.
  • the detachment takes place at the interface 30 ', this should preferably take place in the area below the weakening or severing line, since in this case the resealability of the opened cans is simplified. For this purpose, it could be considered to fix the plastic strip deposited inside the can more strongly in the upper area than in the lower area.
  • FIG. 2 Another embodiment of the present invention is shown in Fig. 2, in which the deposit with the plastic strip 30 in the region of two substantially horizontal beads 16 and 17 was carried out.
  • the can body is weakened or severed at a point 12 between the two beads.
  • the guidance of the cutting tool for attaching the weakening or severing line can be easily adjusted or guided.
  • a total of three horizontal beads 16, 17, 18 running at substantially the same distance are provided with a plastic strip 30, the weakening or severing of the base body taking place on the central bead 17. Since the deposited plastic material has its greatest thickness in this area, there is a particularly high degree of certainty that if the base body is severed, the deposited plastic material will not be severed or damaged too much to ensure that the can still closes securely in this area.
  • the plastic material 30 is also pulled up so far on the inner wall of the can or the lid 20 is pulled down so far that the plastic material protrudes into the area between the can body and the lid, which is a particularly firm connection of the plastic material in the upper area 10 'of Can body ensures and thus greater security that detachment takes place at the boundary layer 30 'below the weakening or severing line.
  • the can body is weakened or severed at 11 below Beads 16, 17 and plastic material 30 is arranged on the inside of the can body 10.
  • a fold is formed, both the edge region of the lid 20 and the can body 10 being involved.
  • Sealing material 15 is located between the two components.
  • the weakening or severing of the container according to the invention, in this case the can, takes place in the region of the fold at 11, the weakening or severing relating to the component of the fold provided by cover 20. Not least due to the presence of sealing material 15, it is ensured that after the weakening or severing of the base material of the can lid in the fold area, the can is still tightly closed.
  • the location 11 of the weakening or severing of the can body can be covered with a surrounding plastic material 30.
  • FIG. 7 which is similar to the embodiment shown in FIG. 6 with regard to the location of the weakening or severing of the base material, it can be provided that cover 20 and can body 10 engage with a thread 40.
  • the can body is weakened or severed above the highest point of the thread.
  • cover 20 is pushed over the upper region 10 ′ of the can body and closes it, the seat of the cover on the can body being secured by thread 40.
  • Sealing material 15 is located in the contact area between the upper area 20 'of the lid and the upper area 10' of the can body and ensures the sterilization-resistant closure of the can.
  • the lower region 20 ′′ of the lid particularly its edge region, is soldered to the can body 10 and is therefore not detachably connected.
  • the point 11 of the weakening or severing of the can-like packaging is in the present case in the lower region 20 ′′ of the lid.
  • plastic material 30 is not necessary insofar as sealing material 15 ensures the tight seal after the weakening according to the invention has been applied or the basic material of the can-like packaging has been severed.
  • FIG. 9 shows a schematic overall view of the embodiment according to FIG. 5, wherein instead of a weakening or severing line that runs essentially horizontally, as previously described, a wavy line is provided, so that a slope and thus a corresponding slope over certain areas of the can circumference There is a stroke when opening the can, which can reduce the effort required to open the can.
  • FIG. 10 shows a schematic overall view of the embodiment according to FIG. 7 consisting of can body 10 and lid 20, lid 20 and can body 10 engaging with a thread 40.
  • the thread provides the closing force required for the reliable reclosability of the can-like packaging, whereas the far greater mechanical stress that occurs during the sterilization process is absorbed by the fold, which after the sterilization therefore has a negative effect without the functionality of the packaging to impair, can be weakened or severed according to the invention.
  • a gripping bead 25 can preferably be provided in the central region of the cover 20, as indicated in the drawing.
  • FIG. 11 shows a schematic overall view of the partial cross-sectional view of a can-like packaging shown in FIG.
  • the packaging here also consisting of the can body 10 and the lid 20. Similar to the concept shown in FIG. 7, thread 40 is also responsible for absorbing the closing force in this embodiment. The absorption of the force occurring in the course of the sterilization process is ensured in the present case by the edge region soldered to the can body 10 in the lower region 20 ′′ of the lid. In the embodiment presented here, it is advisable to fill the can body 10 provided with the lid 20, which has not yet been closed at the bottom, through the bottom opening of the can body 10 and to finally close the can body with a base in a conventional manner after the filling has been completed . Only after the packaging and its contents have been sterilized is a weakening or severing of the base material of the lid 20 carried out according to the invention, the said point of weakening or severing being below the lowest point of thread 40.
  • FIG. 12 shows the upper edge region of a container, for example a can.
  • a coating 50 applied both on the inside of the lid body 20 and on the inside of the body 10.
  • This coating which preferably consists of a polypropylene homopolymer or copolymer, is pressed together by the lid body when closing the fuselage body and under this pressure and if necessary. additional heat deformed, which leads to the bead 52 indicated in the drawing, so that there is a better seal in this area, which in addition to the outer seal of the weakening or severing and the between The lid body and body of the body introduced sealing material 15 provides further security for the tight closure of the can.
  • FIG. 13 of the drawing shows a further embodiment in which the body 10 is closed with a (sealable) film 70 made of, for example, a composite material made of aluminum and plastic, before the further closure with the cover body takes place.
  • the seal with the sealable film is carried out by sealing in the edge area of the fuselage body 10, for example by sealing it on the inside of the fuselage body in the specified area A.
  • FIG. 14 shows two different possibilities of deformation in the fold area 80 of a can which has been sealed in a sterilization-resistant manner.
  • the illustration on the left shows the typical fold closure of a can, which is suitable to withstand the internal pressures that occur during sterilization, but on the other hand is so tight that it is not possible to open this closure without the aid of tools.
  • the upper region of the folding region 80 is pressed inward, which essentially deforms the flange 81 at the upper edge of the can body 10, that is to say it is pressed more or less flat.
  • the engagement between the flanging 81 of the can body 10 and the flanging 82 of the lid 20 is weakened to such an extent that the can can be opened without the aid of tools, ie by simply unscrewing it.
  • the weakening of the connection between the can body 10 and the cover 20 is not so extensive that there is a risk of unintentional opening of the can during storage and transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne procédé permettant de produire un récipient rempli, fermé, stérilisé, comprenant au moins un corps de fuselage et au moins une partie de fermeture. Ledit récipient peut être ouvert sans avoir recours à l'utilisation d'un outil. Ce procédé se caractérise en ce qu'après remplissage avec le contenu approprié, après fermeture résistant à la stérilisation et stérilisation à des températures suffisantes pour conserver le contenu dudit récipient, la résistance de la jonction entre des parties prédéfinies du récipient ou définies par cette étape du procédé est amoindrie, de manière à permettre une séparation desdites parties du récipient sans utiliser d'outil.
EP97935448A 1996-07-19 1997-07-18 Procede pour produire un recipient rempli Expired - Lifetime EP0921985B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19629148 1996-07-19
DE19629148A DE19629148C2 (de) 1996-07-19 1996-07-19 Verfahren zur Herstellung eines befüllten Behälters
DE19708583 1997-03-03
DE19708583A DE19708583A1 (de) 1996-07-19 1997-03-03 Verfahren zur Herstellung eines befüllten Behälters sowie dadurch herstellbarer Behälter
PCT/DE1997/001536 WO1998003406A1 (fr) 1996-07-19 1997-07-18 Procede pour produire un recipient rempli

Publications (2)

Publication Number Publication Date
EP0921985A1 true EP0921985A1 (fr) 1999-06-16
EP0921985B1 EP0921985B1 (fr) 2002-01-02

Family

ID=26027653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97935448A Expired - Lifetime EP0921985B1 (fr) 1996-07-19 1997-07-18 Procede pour produire un recipient rempli

Country Status (4)

Country Link
EP (1) EP0921985B1 (fr)
AU (1) AU720130B2 (fr)
DE (2) DE19708583A1 (fr)
WO (1) WO1998003406A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO720797A0 (en) * 1997-06-05 1997-07-03 Gilmour's Comfort Shoes Pty. Ltd. Container with tamper evident seal
US8210377B2 (en) * 2008-03-20 2012-07-03 Crown Packaging Technology, Inc. Closure edge protection via polymer coated metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH244486A (de) * 1943-09-29 1946-09-15 Ag Neher Verfahren und Vorrichtung zur Herstellung eines dichten, leicht zu öffnenden Behälterverschlusses und nach dem Verfahren hergestellter Behälterverschluss.
US2517064A (en) * 1947-03-31 1950-08-01 Ind Patent Corp Self-opening closure
GB747325A (en) * 1953-06-29 1956-04-04 Exlam Sa Improvements in metal containers and processes for their manufacture
CH544696A (de) * 1972-05-19 1973-11-30 Alusuisse Verfahren und Vorrichtung zur Sterilisation und zur Herstellung von Unterdruck in luftdicht geschlossenen, ein Füllgut enthaltenden Behältern
US3883033A (en) * 1974-03-15 1975-05-13 Roland Clough Brown Instant twistopen can
GB9418290D0 (en) * 1994-09-10 1994-10-26 Metal Box Plc Containers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9803406A1 *

Also Published As

Publication number Publication date
WO1998003406A1 (fr) 1998-01-29
DE59706109D1 (de) 2002-02-28
AU3846397A (en) 1998-02-10
EP0921985B1 (fr) 2002-01-02
AU720130B2 (en) 2000-05-25
DE19708583A1 (de) 1998-09-10

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