EP2476494A1 - Préforme de récipient métallique pressurisé et son procédé de fabrication - Google Patents

Préforme de récipient métallique pressurisé et son procédé de fabrication Download PDF

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Publication number
EP2476494A1
EP2476494A1 EP11150767A EP11150767A EP2476494A1 EP 2476494 A1 EP2476494 A1 EP 2476494A1 EP 11150767 A EP11150767 A EP 11150767A EP 11150767 A EP11150767 A EP 11150767A EP 2476494 A1 EP2476494 A1 EP 2476494A1
Authority
EP
European Patent Office
Prior art keywords
container
range
ironing
preform
steel
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
EP11150767A
Other languages
German (de)
English (en)
Other versions
EP2476494B1 (fr
Inventor
Philippe Gérard Stanislas Niec
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.)
Trivium Packaging Group Netherlands BV
Original Assignee
Ardagh MP Group Netherlands BV
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 Ardagh MP Group Netherlands BV filed Critical Ardagh MP Group Netherlands BV
Priority to DK11150767.9T priority Critical patent/DK2476494T3/da
Priority to EP11150767.9A priority patent/EP2476494B1/fr
Priority to ES11150767T priority patent/ES2426147T3/es
Priority to PT111507679T priority patent/PT2476494E/pt
Priority to PL11150767T priority patent/PL2476494T3/pl
Publication of EP2476494A1 publication Critical patent/EP2476494A1/fr
Application granted granted Critical
Publication of EP2476494B1 publication Critical patent/EP2476494B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/38—Details of the container body
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/16—Actuating means
    • B65D83/20—Actuator caps

Definitions

  • the present invention relates to a pressurised metal container preform, to a pressurised metal container and to a method for making such pressurised metal container and its related preform.
  • Pressurised metal containers are used for containing various types of products.
  • Such products may be beverages, whipped cream, shaving cream, hair dressing lacquer, aerosols, fragrances and perfumes.
  • the intended use determines generally the pressure in the pressurised container.
  • Such pressure may be constantly present as from closing by the filler up to the end of the use of the container by the end user.
  • the use or the opening of the container may be such that the content is released constantly and/or stepwise via a valve.
  • the pressure may only be temporarily present in the container, such as the result of a heating procedure to which the container is subjected. For instance, for pasteurising or sterilising the content, after such heating procedure the pressure generally returns approximately to the initial filling pressure or below.
  • the internal pressure is generally around 8bars.
  • the pressure is generally in the range of around 10bar to around 30bar (or even higher).
  • the container preform and the container should be form stable during their life time. This implies in view of the intended use that the container preform and the container should have a particular wall thickness. A thickness that will guarantee the shape stability of the empty preform during its making process, transport, handling, filling and closing the containerwith the closure. In relation to the filled container, it is required that the container is not only substantially from stable during handling and transport, but in particular after last use by the end user and during intended use of the container content.
  • the shape stability is directly related to the thickness of the container body wall.
  • This container body wall is the wall upstanding from the bottom.
  • the strength of in particular the container body is depended on the metal of which the container has been made. Although stiffening or strengthening structure may contribute the strength of the container.
  • the pressurised container may be made from steel or aluminum.
  • the choice of either metallic material may be depended on the intended use and internal pressures to be withstood, but also on the ultimate shape of the container and of container structures such an end curl, a necked portion, and stiffening structures.
  • Another aspect is the price of the metal from which the container is made. That aerosol container may be made of aluminum or steel.
  • a steel container is thinner than an aluminum container. This means that for such steel container less steel in volume is required for making the container than when such container would have been made of aluminum.
  • steel and aluminum differ in other properties such as toughness and formability. This means that for particular containers and container bodies the metal to be used is either steel or aluminum. But by using particular alloys and tempers of steel and aluminum there is sometimes in overlap in properties making both metals interchangeable.
  • the choice of metal for the container or container body is dictated by the content of the container.
  • steel of aluminum containers or bodies may be used.
  • Depilatory creams, hair mousse, and body sprays will be preferably packed into aluminum containers.
  • the containers of the invention relate to containers comprising a container body and bottom which are unitary. They form a so called mono-block.
  • Such containers are made by drawing and ironing. Thereto, a disc or blank is cut from a sheet of metal having a particular thickness or gauge. The disc is then transferred into an apparatus comprising a punch forcing the disc through a drawing die to make a cup. Then, the produced cup is usually transferred to another apparatus to redraw and iron the cup in one operation... The redraw of the cup will result in a reduction in diameter and the ironing process will result in a thinning and elongation of the wall ultimately forming the container body wall.
  • the bottom of the monoblock may be subjected to a forming operation, such as providing the bottom with a concave shape. Such a drawing and ironing process is for instance described in US5,394,727 .
  • the drawing and ironing process (such as the DWI process) has as an effect that the bottom has substantially the same thickness or gauge as the original disc, blank or sheet of metal.
  • This ironing ratio is in essential equal to the extent of which the original sheet of metal after forming the initial cup has been radially decreased in diameter and longitudinally elongated.
  • the ironing ratio is an indication of the amount of metal material of the metal sheet (or metal stock) is required for making the container body by drawing and ironing. The higher the ironing ratio the less material is required for making the container body for a specific container height.
  • the ironing ratio for steel and aluminum drawn and ironed containers could not be higher than about maximally 50 to 60%.
  • extensive and long lasting research by the inventors has resulted in experimental evidence that steel and aluminum with a respective metal gauge may be subjected to a drawing and ironing process such that the container and container preform can be made from steel or aluminum with a gauge at a higher ironing ratio.
  • the present invention relates to a pressurised metal container preform, such as for an aerosol container or beverage container, comprising a container body unitary with a bottom, which container preform has been made by drawing ironing, wherein the ironing ratio is in the range of about 64% to about 77%, and wherein the thickness of the bottom made of aluminum is in the range of about 0.50mm to about 1.2mm, or the bottom made of steel is in the range of about 0.30mm to about 0.70mm.
  • the invention is based on the insight that aluminum and steel container be drawn and ironed at an ironing ratio when starting with aluminum with a gauge in the range of 0.50mm to 1.2mm.
  • a gauge is substantially identical to the bottom of the container or container as the bottom is generally not affected by the drawing and ironing procedure.
  • such higher ironing ratio may also be obtained with steel having a gauge of 0.30mm to 0.70mm. Due to the increase of the ironing ratio the amount of aluminum or steel is reduced for making a container and container having substantially the same properties as a container or container preform made at a lower ironing ratio. For in particular aluminum such ironing at a higher ironing ratio became preferably feasible when applying the aluminum cup to a drawing process generally used for steel cup drawing and ironing.
  • the ironing ratio may be selected at any ratio within the range of 64% to 77%, such as 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75% 76% and 77%, it is preferred that such selection is within a range of such ironing ratio values. Practically, it was experimentally determined that practical results could be obtained when the ironing ratio is in the range of about 66% to 70%. Such ratio provides container preforms and containers having optimal or even best properties.
  • the optimal results are obtained when preferably the thickness of the bottom made of aluminum is in the range of about 0.57mm to about 1.0mm. Better results are obtained when more preferably the thickness of the aluminum bottom is in the range of about 0.6mm to about 0.7mm.
  • aluminum alloys of any type may be used, it turned out that desired and good results may be obtained when preferably the aluminum is of the 3000 series, preferably 3104, or 3004.
  • the optimal results are obtained when preferably the thickness of the bottom made of steel is in the range of about 0.35mm to about 0.60mm. Better results are obtained when more preferably the thickness of the steel bottom is in the range of about 0.45mm to about 0.55mm.
  • the container body is provided with a necked portion.
  • the inventors have found that the preform (and container) may be provided when desired with a necked body portion. Such necking of the container body free end may be done with traditional operations using a series of necking dies. It has in this respect been established by the inventors that although drawn and ironed with the higher ironing ratio of the invention, the preform container still be necked substantially without problems such as kinking, cracking and jamming in the necking dies.
  • the closure may be of any type as is required for the intended use of the container.
  • a container for beverages it may be a closure provided with a pull tab, an easy opening panel, or a twisted cap.
  • the closure may be a clamped on closure provided with a valve to be actuated for releasing the content.
  • the closure may be connected by adhesive or solder, or by a mechanical connection such as by snapping and/or seaming, clamping and screwing.
  • Dependent on the type of closure the container may be filled before application of the closure or via the closure.
  • the inner surface of the container preform or container may be provided with a coating the product or use so desires.
  • inner coatings are lacquers, and plastic neutralising layers.
  • a further aspect of the invention relates to a method of making a container preform for a pressurised metal container, such as an aerosol container or beverage container, having a container comprising a container body unitary with a bottom, comprising the steps of:
  • the ironing ratio is in the range of about 66% to about 70%.
  • the cup thickness is in the range of about 0.57mm to about 1.0mm, and more preferably in the range of about 0.6mm to about 0.7mm.
  • the cup thickness is in the range of about 0.35mm to about 0.60mm, more preferably in the range of about 0.45mm to about 0.55mm.
  • the optional additional step of necking the container body is included.
  • a further aspect of the invention relates to a pressurised metal container preform obtainable with the method according to the invention.
  • Still a further aspect of the invention relates to method of making a pressurised metal container, such as an aerosol container or beverage container, comprising the step of providing a preform according to the invention with a closure, preferably a twisted cap or a clamped closure.
  • Figure 1A shows a disc 1 made of aluminumThe gauge of the disc is about 0.65mm.
  • the disc 1 is than drawn to a cup 2 as shown in figure 1B .
  • the drawing process used may suitable drawing (and ironing process) such as described in US5,394,727 , although the described reverse drawing is not necessarily used.
  • Particularly suitable drawing and ironing processes are those that are essentially designed for drawing and ironing steel to monoblocks.
  • the aluminum cup or monoblock 2 is then subjected ironing using one or more ironing rings for producing the container preform 3 having a diameter of about 40mm, ( figure 1C ).
  • the preform 3 has a bottom 4 which has substantially same thickness as the gauge of the disc 1, that is for example about 0.65mm.
  • the ironing ratio is for this example about 68%. This means that the thickness of the container body wall 5 is about 0.208mm [].
  • the preform 3 is subsequently provided at the container body open end 7 with a outwardly directed curl 6 ( figure 1D to be redesigned outwardly).
  • a closure 8 clamped snappingly with a groove 9 on the curl 6.
  • the container 10 can be used for containing a product with a pressure of about 17bar.
  • the closure may be pinched for releasing the content.
  • FIG. 2 shows a container 11 according to the invention.
  • the container 11 comprises a container body 12 unitary with a bottom 13.
  • the bottom has a thickness of about 0.60mm corresponding substantially to the gauge of the metal disc from which the container body 12 has been made by drawing and ironing with a ironing ratio of about 70%.
  • the container body 12 has a container body wall thickness of about0.18mm
  • the container body is provided with a necked portion 14.
  • the necked portion 14 has been formed by necking using for instance 16 necking dies
  • the container body has a diameter of about 45mm and a necked and curled opening of about 25mm.
  • the necked portion 14 is provided with a screw path structure 15 onto which is screwed a screw cap 16.
  • the internal pressure of the beverage filled container 11 is about 1.7bar.
  • FIG. 3 shows an aerosol container 17 according to the invention.
  • the aerosol container 17 comprises a container body 18 unitary with a concave bottom 19.
  • the thickness of the bottom is about 0.60mm and has been formed by drawing and ironing to an ironing ratio of about 70%.
  • the container body has a container body wall thickness of about0.18mm.
  • the container body has a necked portion 20 having an outwardly curled curl 21.
  • On the curl 21 is mounted a closure 22 provided with a valve 23.
  • the diameter of the container body 18 is about 45mm and the diameter of the necked portion is about 20mm.
  • the internal pressure of the contained aerosol is about 18bar.
  • FIG 4 shows a container 24 according to the invention made of aluminum.
  • the container 24 comprises a container body 25 having a shape slightly diverging from a bottom 26.
  • the bottom 26 has a thickness of about 0.59mm.
  • the container body is formed by drawing and ironing at an ironing ratio of about 64%.
  • the container body wall thickness is about0.212mm. After ironing the container body may have subjected to a forming process with any kind of expansion method: hydraulic, pneumatic, mechanical.
  • the container body 25 is provided with in inwardly curled part 27 onto which is snapped a closure 28 provided with valve to be opened by pressing.
  • the gaseous aerosol product has a pressure of about 12bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
EP11150767.9A 2011-01-12 2011-01-12 Préforme de récipient métallique pressurisé et son procédé de fabrication Active EP2476494B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK11150767.9T DK2476494T3 (da) 2011-01-12 2011-01-12 Under tryk sat, forformet metalbeholder og fremgangsmåde til fremstilling af samme
EP11150767.9A EP2476494B1 (fr) 2011-01-12 2011-01-12 Préforme de récipient métallique pressurisé et son procédé de fabrication
ES11150767T ES2426147T3 (es) 2011-01-12 2011-01-12 Preforma de envase metálico presurizado y envase metálico presurizado y un método para hacerlo
PT111507679T PT2476494E (pt) 2011-01-12 2011-01-12 Pré-forma de recipiente de metal pressurizado e método de fazer a mesma
PL11150767T PL2476494T3 (pl) 2011-01-12 2011-01-12 Preforma ciśnieniowego pojemnika metalowego oraz sposób jej wytwarzania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11150767.9A EP2476494B1 (fr) 2011-01-12 2011-01-12 Préforme de récipient métallique pressurisé et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP2476494A1 true EP2476494A1 (fr) 2012-07-18
EP2476494B1 EP2476494B1 (fr) 2013-08-07

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ID=43858015

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EP11150767.9A Active EP2476494B1 (fr) 2011-01-12 2011-01-12 Préforme de récipient métallique pressurisé et son procédé de fabrication

Country Status (5)

Country Link
EP (1) EP2476494B1 (fr)
DK (1) DK2476494T3 (fr)
ES (1) ES2426147T3 (fr)
PL (1) PL2476494T3 (fr)
PT (1) PT2476494E (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015157243A1 (fr) * 2014-04-11 2015-10-15 iMOLZ, LLC Récipient sous pression métallique de forme non arrondie et son procédé de fabrication
FR3020114A1 (fr) * 2014-04-16 2015-10-23 Franck Flecheux Valve de distribution pour dispositif de distribution de produit pressurise et procede d’assemblage d’une telle valve

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029507A (en) * 1957-11-20 1962-04-17 Coors Porcelain Co One piece thin walled metal container and method of manufacturing same
FR2171185A1 (fr) * 1972-02-11 1973-09-21 Km Engineering Ag
US3820368A (en) * 1973-02-16 1974-06-28 Kobe Steel Ltd Process for producing drinking cans made of aluminum plated steel sheet
EP0045115A1 (fr) * 1980-07-30 1982-02-03 Thomassen & Drijver-Verblifa N.V. Dispositif de lissage des parois d'objets étirés
EP0053240A2 (fr) * 1980-11-28 1982-06-09 TUBETTIFICIO LIGURE S.p.A. Procédé de fabrication de boîtes métalliques en bloc à paroi mince, utilisables comme reservoirs à pression et produits ainsi obtenus
GB2112685A (en) * 1981-11-23 1983-07-27 Nat Can Corp Tandem ironing land assembly
EP0122651A1 (fr) * 1983-03-28 1984-10-24 Hoogovens Groep B.V. Procédé de fabrication de récipients métalliques et un semi-produit pendant leur fabrication
WO1990014179A1 (fr) * 1989-05-17 1990-11-29 Toyo Seikan Kaisha, Ltd. Fabrication de boites etirees/embouties
WO1994016842A1 (fr) * 1993-01-29 1994-08-04 Mn Maschinenbau & Engineering Martin Nussbaum Procede et installation pour la fabrication de boites d'aluminium pour boissons ou aliments
US5394727A (en) 1993-08-18 1995-03-07 Aluminum Company Of America Method of forming a metal container body
US20030046971A1 (en) * 1999-08-30 2003-03-13 Daiwa Can Company Bottle-shaped can manufacturing method
US20040035871A1 (en) * 2002-08-20 2004-02-26 Thomas Chupak Aluminum aerosol can and aluminum bottle and method of manufacture
EP1882535A1 (fr) * 2006-07-26 2008-01-30 Impress Group B.V. Procédé et appareil de formage d'un récipient d'acier sous pression, un tel récipient et sa préforme

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029507A (en) * 1957-11-20 1962-04-17 Coors Porcelain Co One piece thin walled metal container and method of manufacturing same
FR2171185A1 (fr) * 1972-02-11 1973-09-21 Km Engineering Ag
US3820368A (en) * 1973-02-16 1974-06-28 Kobe Steel Ltd Process for producing drinking cans made of aluminum plated steel sheet
EP0045115A1 (fr) * 1980-07-30 1982-02-03 Thomassen & Drijver-Verblifa N.V. Dispositif de lissage des parois d'objets étirés
EP0053240A2 (fr) * 1980-11-28 1982-06-09 TUBETTIFICIO LIGURE S.p.A. Procédé de fabrication de boîtes métalliques en bloc à paroi mince, utilisables comme reservoirs à pression et produits ainsi obtenus
GB2112685A (en) * 1981-11-23 1983-07-27 Nat Can Corp Tandem ironing land assembly
EP0122651A1 (fr) * 1983-03-28 1984-10-24 Hoogovens Groep B.V. Procédé de fabrication de récipients métalliques et un semi-produit pendant leur fabrication
WO1990014179A1 (fr) * 1989-05-17 1990-11-29 Toyo Seikan Kaisha, Ltd. Fabrication de boites etirees/embouties
WO1994016842A1 (fr) * 1993-01-29 1994-08-04 Mn Maschinenbau & Engineering Martin Nussbaum Procede et installation pour la fabrication de boites d'aluminium pour boissons ou aliments
US5394727A (en) 1993-08-18 1995-03-07 Aluminum Company Of America Method of forming a metal container body
US20030046971A1 (en) * 1999-08-30 2003-03-13 Daiwa Can Company Bottle-shaped can manufacturing method
US20040035871A1 (en) * 2002-08-20 2004-02-26 Thomas Chupak Aluminum aerosol can and aluminum bottle and method of manufacture
EP1882535A1 (fr) * 2006-07-26 2008-01-30 Impress Group B.V. Procédé et appareil de formage d'un récipient d'acier sous pression, un tel récipient et sa préforme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015157243A1 (fr) * 2014-04-11 2015-10-15 iMOLZ, LLC Récipient sous pression métallique de forme non arrondie et son procédé de fabrication
FR3020114A1 (fr) * 2014-04-16 2015-10-23 Franck Flecheux Valve de distribution pour dispositif de distribution de produit pressurise et procede d’assemblage d’une telle valve

Also Published As

Publication number Publication date
PL2476494T3 (pl) 2014-01-31
DK2476494T3 (da) 2013-11-04
ES2426147T3 (es) 2013-10-21
EP2476494B1 (fr) 2013-08-07
PT2476494E (pt) 2013-10-17

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