EP0853515B1 - Systemes et procedes de fabrication de boites metalliques decoratives faconnees - Google Patents

Systemes et procedes de fabrication de boites metalliques decoratives faconnees Download PDF

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Publication number
EP0853515B1
EP0853515B1 EP96932254A EP96932254A EP0853515B1 EP 0853515 B1 EP0853515 B1 EP 0853515B1 EP 96932254 A EP96932254 A EP 96932254A EP 96932254 A EP96932254 A EP 96932254A EP 0853515 B1 EP0853515 B1 EP 0853515B1
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EP
European Patent Office
Prior art keywords
container
mould
gaps
parts
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96932254A
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German (de)
English (en)
Other versions
EP0853515A1 (fr
Inventor
Mark W. Hartman
Zeev W. Shore
James J. Tang
Anton A. Aschberger
Michael R. Gogola
William O. Irvine
Ralph J. Trnka
Richard O. Wahler
Robert A. Winkless
Richard Mark Orlando Golding
David A. Harvey
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.)
Crown Packaging Technology Inc
Original Assignee
Crown Cork and Seal Technologies Corp
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 US08/551,073 external-priority patent/US5746080A/en
Priority claimed from GBGB9603110.9A external-priority patent/GB9603110D0/en
Priority claimed from GBGB9604784.0A external-priority patent/GB9604784D0/en
Priority claimed from US08/683,575 external-priority patent/US5832766A/en
Application filed by Crown Cork and Seal Technologies Corp filed Critical Crown Cork and Seal Technologies Corp
Publication of EP0853515A1 publication Critical patent/EP0853515A1/fr
Application granted granted Critical
Publication of EP0853515B1 publication Critical patent/EP0853515B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • 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
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged

Definitions

  • This invention relates generally to the field of consumer packaging, and more specifically to metal cans, such as the steel and aluminium cans that are commonly used for packaging soft drinks, other beverages, food and aerosol products.
  • Metal cans for soft drinks, other beverages and other materials are of course in wide use throughout the world.
  • the art of making and packing metal cans is constantly evolving in response to improved technology, new materials, and improved manufacturing techniques.
  • Other forces driving the evolution of technology in this area include raw material prices, the nature of new materials to be packaged and the marketing goals of the large companies that manufacture and distribute consumer products such as soft drinks.
  • U.S.-A- 3,224,239 to Hansson discloses a system and process for using pneumatic pressure to reshape cans. This process utilised a piston to force compressed air into a can that is positioned within a mould. The compressed air caused the can wall to flow plastically until it assumed the shape of the mould.
  • EP-A-0,521,637 describes a method and apparatus for shaping three piece cans such as aerosol cans.
  • the can is clamped inside a split mould and expansion of the can is achieved by pressurising the inside of the can with air under pressure.
  • the height of the can is reduced by sliding an upper sleeve and clamping members axially until the clamping member engages a spacer ring. This closing up of the apparatus is said to reduce thinning of the can wall and enable greater diameter expansion.
  • a method of reshaping a hollow container comprising: placing the container blank in a chamber defined by a mould, the mould having three parts; expanding the container radially outwards onto the inner surface of the mould by the use of pressurised fluid in the container blank; moving two of the mould parts towards the third from a first position in which the parts are spaced from each other by gaps to a second position in which the gaps between the mould parts are reduced in size; characterised in that the gaps open onto the mould chamber in both the first position and in the second position, after having been reduced in size, so that the gaps are not closed up during reshaping and splitting of the container due to excessive tension in the side wall is avoided.
  • Another method is provided according to claim 15.
  • a can body blank or preform 10 is the body of a two-piece can, which is preferably formed by the well-known drawing and ironing process.
  • Can body blank 10 includes a substantially cylindrical side wall surface 12, a bottom 14, and necked upper portion 16. Alternatively, the upper portion of cylindrical side wall 12 could be straight.
  • the can body blank 10 must be washed after the drawing and ironing process, and then must be dried prior to being sent to the decorator.
  • the drying process typically is performed at a temperature of about 250 degrees Fahrenheit (which is about 121 degrees Celsius). According to one aspect of the preferred embodiment of this invention, the drying is performed at a higher temperature than is ordinary to partially anneal at least selected portions of the can body blank 10.
  • a heat source 18 is schematically depicted, which is preferably part of the dryer assembly, but could be at any point in the apparatus prior to the moulding unit.
  • can body blank 10 is preferably formed of aluminium and the partial annealing is preferably accomplished at a temperature that is substantially within the range of about 375 degrees Fahrenheit (about 190.5 degrees Celsius) to about 550 degrees Fahrenheit (about 288 degrees Celsius), with a more preferred range of about 450 degrees Fahrenheit (about 232 degrees Celsius) to about 500 degrees Fahrenheit (about 260 degrees Celsius), and a most preferred temperature of about 475 degrees Fahrenheit (about 246 degrees Celsius).
  • the partial annealing is to give the can body blank 10 enough ductility to be formed into a shaped can 20, such as is shown in Figure 2 of the drawings, but greater toughness than would be possible if the can body blank were fully annealed.
  • the partial annealing could be performed in an oven such as the lacquer or decorator oven, rather than in the dryer.
  • can body blank 10 could be fabricated from steel instead of aluminium.
  • the preferred temperature range for partial annealing would be substantially within the range of 1112 degrees Fahrenheit (600 degrees Celsius) to about 1472 degrees Fahrenheit (800 degrees Celsius). More preferably, the partial annealing would be performed at approximately 1382 degrees Fahrenheit (750 degrees Celsius).
  • can body 20 includes a bottom 26, a shaped side wall 22 that is shaped to substantially deviate from the standard cylindrical can body shape, such as the shape of can body blank 10.
  • the shaped side wall 22 includes areas, such as ribs 30 and grooves 32, where accentuation of such deviations from the cylindrical shape might be desired.
  • decoration is provided on the external surface of the shaped side wall 22 in a manner that will accentuate those areas of the side wall where accentuation of the deviation from the cylindrical shape is desired.
  • a first type of decoration which may be a lighter colour
  • a second type of decoration 36 which may be a darker colour
  • a synergistic visual effect can be obtained that would be impossible to obtain alone by shaping the can or by decorating the can.
  • shaped side wall 22 also has a flat area 28, where writing or a label might be applied, and is closed by a can end 24, which is applied in the traditional double seaming process.
  • can body blank 10 after the partial annealing by the heat source 18 at the drying station, can body blank 10 will be transported to a decorator, where the distinctive decoration will be applied while the can body blank 10 is still in its cylindrical configuration. Markers might also be applied during the decorating process that can be used for registration of the decoration to the mould contours during subsequent forming steps, which will be described in greater detail below.
  • apparatus 38 which, according to the preferred embodiment of the invention, is provided to manufacture a shaped can 20 of the type that is depicted in Figure 2.
  • apparatus 38 includes a mould 40 having a mould wall 46 that defines a mould cavity 42 conforming to the desired final shape of the shaped can body 20.
  • the mould 40 is of the split wall type and the mould wall 46 will include inwardly extending portions 48 that are less in diameter than the diameter D b of the cylindrical side wall 12 of the can body blank 10 depicted by the dotted lines in Figure 7b.
  • the mould wall 46 will also include a number of outwardly extending portions that are greater in diameter than the diameter D b of the side wall 12 of the can body blank 10.
  • the inwardly extending portions 48 tend to compress the cylindrical side wall 12 of the can body blank 10 to the position 12' shown by the solid lines in Figure 7b, while the side wall 12 of the can body blank 10 must be expanded to conform to the outwardly extending portions 50 of the mould wall 46.
  • the perimeter of the cylindrical side wall remains a constant length when compressed in this manner so the perimeter of the cylindrical compressed side wall 12' is the same length as the circumference of the side wall 12 of the can body blank 10.
  • the mould unit 40 has three die parts 82, 46 and 84 which comprise neck ring, mould side wall and base support, respectively.
  • the die parts are separated from each other by gaps or “split lines" 86 and 88.
  • the base support die 84 is made in two parts, with a central part 90 supporting the base dome of the can body.
  • the neck ring 82 provides simple support to the necked portion of the can body.
  • Vent holes 49 are provided (see Figures 4 and 5) to allow trapped air to escape during forming.
  • a pair of seal and support rings 92, 94 and a rubber sealing ring 96 are provided to seal the top edge of the container body.
  • a space saving mandrel 98 passes through the centre of the seal and support rings 92, 94, 96 to a position just above the base support dome 84.
  • the mandrel 98 supplies air to the cavity of a can body within the cavity 42 via a central bore 100 and radial passages 102.
  • the apparatus further includes an upper piston and a lower piston 104, 106 which together apply a load to both ends of the can in the mould cavity 42.
  • Lower piston 106 is moveable upwards by structure of a pressurised air supply which is fed to the piston via passage 108.
  • the upper piston is moveable downwards by structure of a pressurised air supply which is fed to the piston via passages 110 and 112.
  • the passage 110 is connected to the central bore 100 of the mandrel 98 so that the upper piston and can cavity share a common air supply.
  • the common air supply is split for the piston 104 and cavity at the junction of the air passage 112 and the central mandrel bore 100, within the piston 104 so as to minimise losses and to maintain the same pressure supplied to the cavity and piston.
  • means are provided to control the flow rate of air supplied to each piston and the cavity. Cavity pressure and piston pressure can therefore be closely controlled.
  • FIG. 6 A schematic circuit diagram which shows how air is supplied to the pistons and can cavity is shown in figure 6.
  • the upper piston 104 and seal and support rings 92,94 are shown schematically as a single unit 114.
  • the base support 84,90 and lower piston 106 are shown as a single unit 116.
  • Units 114 and 116 and neck ring 82 are movable, whereas the side wall die 46 of the mould is shown fixed.
  • the circuit comprises two pressure supplies.
  • Pressure supply 118 supplies pressurised air to the top piston 104 and cavity of the can within the mould cavity 42.
  • Pressure supply 120 supplies pressurised air to the lower piston 106 only.
  • the two supplies each comprise pressure regulators 122,124, reservoirs 126,128, blow valves 130,132 and exhaust valves 134,136.
  • the lower pressure supply 120 includes a flow regulator 138.
  • the upper pressure supply 118 may also include a flow regulator, although it is not considered essential to be able to adjust the flow in both supplies. Reservoirs 126, 128 prevent a high drop in supply pressure during the process.
  • high pressure air of around 30 bar is introduced to the can cavity and to drive the top of the can.
  • the air pressure to drive the bottom piston 106 is typically around 50 bar, depending on the piston area.
  • the air pressure within the mould cavity 42 provides the force which is required to expand the can body blank outwards but also applies an unwanted force to the neck and base of the can which leads to longitudinal tension in the can side wall.
  • the two pistons are thus used to drive the top and the bottom of the can, providing a force which counteracts this tension in the can side wall.
  • the pressure of the air supplied to the pistons is critical in avoiding failure of the can during forming due to either splitting or wrinkling. Splitting will occur if the tension in the can side wall is not sufficiently counteracted by the piston pressure, since the pressure in the pistons is too low. Conversely, the pressure of the air supplied should not be so high that this will lead to the formation of ripples in the side wall.
  • the balance between the can cavity pressure and the piston pressure is preferably maintained at all times throughout the forming cycle so that the rate of pressure rise in the cavity and behind the pistons should be balanced throughout the cycle, particularly when the can wall yields.
  • the rate of pressure rise can be controlled by the flow regulator 138 or by adjusting the supply pressure via the pressure regulators 122,124.
  • the apparatus may be operated in one of three different ways.
  • minimising application of pressure to the outer mould parts 82,84 the apparatus may be operated so as to simply move the mould parts toward another without exerting any force on the can body. This will reduce the gaps 86, 88 in the mould unit 40 as the can body shrinks longitudinally during the expansion process, and will reduce but not necessarily neutralise axial tensile stress created in the side wall of the can body during expansion.
  • a slight longitudinal or axial force is applied to the can body which is substantially equal to the axial tensile stress in the can body side wall, thus balancing such stress and protecting the can body from consequential weakening and possible splitting.
  • a third mode of operation would be to provide an even greater pressure to drive the outer mould parts toward one another in order to apply an axially compressive force to the can body that would be greater than what would be necessary to cancel the tensile stress in the side wall during operation.
  • a net compressive force is believed to be preferable provided that such a force does not lead to the formation of wrinkles.
  • the blow valves 130,132 are first opened. It is possible to have a short delay between the opening times of the blow valves if required to obtain a better match between the piston and cavity pressures but there will then need to be a higher rate of pressure rise for one circuit in order to maintain this balance. A delay can also be used to compensate for different pipe lengths, maintaining a pressure balance at the time of forming.
  • the upper supply 118 is split for the piston 104 and cavity as close as possible to the piston 104 as described above in reference to Figure 3.
  • the apparatus is designed so that, at the latest, when each piston reaches its maximum travel the can is fully reshaped and the gaps 86, 88 are not closed up at the end. Closing of the gaps can lead to splitting of the can due to excessive tension in the side wall in the same way as does limiting movement of the pistons before full expansion has occurred. However, the final gap should not be excessive since any witness mark on the side wall becomes too apparent, although removal of sharp edges at the split lines alleviates this problem.
  • valves 134 and 136 are closed throughout the actual forming process. It is important that both supplies are vented simultaneously since the compressive force applied by the pistons to balance the cavity pressure (longitudinal tension) may be greater than the axial strength of the can so that uneven exhausting leads to collapse of the can.
  • the can body blank 10 is preferably positioned within the mould cavity 42 and its interior space is sealed into communication with a source of pressurised fluid, as described above.
  • the cavity 42 is designed so as to impart a slight compression to the can body blank 10 as it is inserted therein. This is preferably accomplished by forming the mould assembly elements into halves 52, 54, shown in Figure 4 that are split so as to be closable about the can body blank prior to pneumatic expansion of the can body blank 10.
  • the precompression that is effected by the closing of the mould halves 52, 54 is performed to deflect the side wall 12 of the can body blank 10 radially inwardly by a distance of R in that is within the range of about 0.1 to about 1.5 millimetres. More preferably, this distance R in is within the range of 0.5 to about 0.75 millimetres.
  • the distance R out by which cylindrical side wall 12 is radially expanded outwardly to form the outermost portions of the shaped side wall 22 is preferably within the range of about 0.1 to about 5.0 millimetres. A most preferable range for distance R out is about 0.5 to 3.0 millimetres. Most preferably, R out is about 2 millimetres.
  • the precompression step By using the precompression to get a significant portion of the differential between the innermost and outermost portions of the pattern that is superimposed onto the final shaped can 20, the amount of actual radial expansion necessary to achieve the desired pattern is reduced. Accordingly, the amount of annealing that needs to be applied to the can body blank 10 is also reduced.
  • the precompression step then, allows the desired pattern to be superimposed on the shaped can 20 with a minimum of annealing and resultant strength loss, thus permitting the cylindrical side wall 12 of the can body blank 10 to be formed as thinly as possible for this type of process.
  • the mould wall may be formed of a porous material so as to allow air trapped between the side wall of the can body blank and the mould wall to escape during operation, although vent holes will probably still be required.
  • a porous material is porous steel, which is commercially available from AGA in Leydig, Sweden.
  • pressure monitor 69 For purposes of quality monitoring and control, fluid pressure within the mould cavity 46 is monitored during and after the expansion process by structure of a pressure monitor 69, shown schematically in Figure 5.
  • Pressure monitor 69 is of conventional construction. If the can body develops a leak during the expansion process, or if irregularities in the upper flange or neck of the can creates a bad seal with the gas probe, pressure within the mould cavity will drop much faster in the mould chamber 46 than would otherwise be the case. Pressure monitor 69 will sense this, and will indicate to an operator that the can body might be flawed.
  • pressure within the mould chamber could be made high enough to form the can body into, for example, a beading-type pattern wherein a number of circumferential ribs are formed on the container.
  • a second method and apparatus for manufacturing a metallic can body that is shaped distinctively in order to enhance its visual presentation to consumers is disclosed in Figures 7 and 9 of the drawings.
  • a third embodiment is depicted in Figures 8 and 9 of the drawings.
  • a distinctively shaped metallic can body is manufactured by providing a can body blank, such as the can body blank 10 shown in Figure 1, that has a side wall 12 of substantially constant diameter, then radially deforming the can body blank 10 in selective areas by selected amounts to achieve an intermediate can body 74 that is radially modified, but is still symmetrical about its access, and then superimposing a preselected pattern of mechanical deformations onto the intermediate can body 74.
  • a beading apparatus 62 of the type that is well known in this area of technology includes an anvil 66 and a beading tool 64.
  • a beading apparatus 62 is used to radially deform the can body blank 10 into the radially modified intermediate can body 74 shown in Figure 9.
  • the intermediate can body 74 as may be seen in Figure 9, has no deformations thereon that have an axial component, and is substantially cylindrical about the access of the can body 74.
  • a knurling tool 76 is then used to superimpose the preselected pattern of mechanical deformations, in this case ribs and grooves, onto the intermediate can body, making it possible to produce a shaped can 20 of the type that is shown in Figure 2.
  • a spinning unit 68 is used to deform the cylindrical side wall 12 of the can body blank 10 radially into the intermediate can body 74.
  • Spinning unit 68 includes, as is well known in the technology, a mandrel 70 and a shaping roller 72 that is opposed to the mandrel 70.
  • the knurling step shown in Figure 9 is preferably performed on the so formed intermediate can body 74 in a manner that is identical to that described above.
  • the intermediate can body 74 produced by either the method shown in Figure 7 or that shown in Figure 8 could, alternatively, be placed in a pneumatic expansion die or mould unit 40 of the type that is shown in Figures 3-5. Intermediate can body 74 would then be expanded in a manner that is identical to that described above in order to achieve the shaped can 20.
  • the can body blank 10 is also preferably partially annealed by the heat source 18 during the drying process, but, preferably, to a lesser extent than that in the first described embodiment.
  • the annealing for the second and third methods described above is performed at a temperature that is within the range of about 375 degrees Fahrenheit (about 190 degrees Celsius) to about 425 degrees Fahrenheit (about 218 degrees Celsius).
  • the methods described with reference to Figures 7 and 8 thus require less annealing than that described with respect to the previous embodiment, meaning that a stronger shaped can 20 is possible at a given weight or wall thickness, or that the weight of the shaped can 20 can be reduced with respect to that produced by the first described method.
  • Disadvantages of the second and third methods include more machinery and greater mechanical complexity, as well as more wear and tear on the cans, spoilage and possible decoration damage as a result of the additional mechanical processing and handling.
  • can body blank 10 could be formed by alternative processes, such as a draw-redraw process, a draw-thin-redraw process, or by a three-piece welded or cemented manufacturing process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Stackable Containers (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (15)

  1. Procédé de refaçonnage d'un récipient creux comprenant :
    la mise en place de l'ébauche du récipient dans une chambre (42) définie par un moule (40), le moule ayant trois parties (82, 46, 84) ;
    l'expansion du récipient radialement vers l'extérieur jusque sur la surface intérieure du moule en utilisant un fluide sous pression dans l'ébauche du récipient ;
    le déplacement axial de deux des parties du moule vers la troisième partie depuis une première position dans laquelle les parties sont espacées les unes des autres par des espaces (86, 88) jusqu'à une seconde position dans laquelle la dimension des espaces entre les parties du moule est réduite ;
       caractérisé en ce que les espaces (86, 88) débouchent sur la chambre du moule à la fois dans la première position et dans la seconde position, après que leur dimension a été réduite, afin que les espaces ne soient pas fermés pendant le refaçonnage et qu'un éclatement du récipient sous l'effet d'une traction excessive dans la paroi latérale soit évité.
  2. Procédé selon la revendication 1, caractérisé par le positionnement des espaces aux points d'expansion maximale du récipient.
  3. Procédé selon la revendication 1 ou la revendication 2, caractérisé par l'application d'une charge à au moins une extrémité du récipient.
  4. Procédé selon la revendication 3, caractérisé par l'équilibrage de la force exercée par le fluide sous pression sur l'intérieur du récipient et de la charge appliquée à l'extrémité ou aux extrémités du récipient.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les parties sont rapprochées les unes des autres avec une force qui est suffisante pour exercer une force de compression nette sur la paroi latérale du récipient pendant le refaçonnage.
  6. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les pièces sont rapprochées les unes des autres avec une force qui est suffisante pour équilibrer les forces dans la paroi latérale du récipient pendant le refaçonnage.
  7. Appareil pour refaçonner un récipient creux par le procédé selon l'une quelconque des revendications 1 à 6, comportant
    un moule (40) ayant trois parties (82, 46, 84) définissant une chambre (42) destinée à loger le récipient ;
    une alimentation en fluide destinée à amener un fluide sous pression dans le récipient creux pour expanser le récipient radialement vers l'extérieur jusque sur la surface intérieure du moule ; et
    un moyen pour déplacer axialement deux des parties du moule vers la troisième partie depuis une première position dans laquelle les parties sont espacées les unes des autres par des espaces (86, 88) jusqu'à une seconde position dans laquelle la dimension des espaces entre les parties du moule est réduite, caractérisé en ce que les espaces (86, 88) s'ouvrent dans la chambre du moule.
  8. Appareil selon la revendication 7, dans lequel les espaces dans le moule sont positionnés aux points d'expansion maximale du récipient.
  9. Appareil selon la revendication 7 ou la revendication 8, comportant en outre un moyen destiné à appliquer une charge à au moins une extrémité du récipient.
  10. Appareil selon la revendication 9, dans lequel le moyen destiné à appliquer une charge comporte au moins un piston (104, 106).
  11. Appareil selon la revendication 10, dans lequel les pistons sont actionnés par la pression d'un fluide.
  12. Appareil selon la revendication 11, dans lequel le fluide sous pression est fourni soit indépendamment, soit à une combinaison quelconque du piston ou des pistons et de l'intérieur du récipient.
  13. Appareil selon la revendication 11 ou la revendication 12, dans lequel une conduite de fluide sous pression unique alimente le piston, ou l'un des pistons et l'intérieur du récipient, et est divisée à proximité immédiate ou à l'intérieur du piston.
  14. Appareil selon l'une quelconque des revendications 9 à 13, dans lequel l'entrée en contact du récipient expansé avec la paroi du moule empêche la poursuite du mouvement du moyen d'application d'une charge, grâce à quoi le moyen d'application d'une charge n'atteint pas la limite de son mouvement avant que le récipient soit totalement refaçonné.
  15. Procédé de refaçonnage d'une ébauche de récipient pour une boíte en deux pièces, l'ébauche comportant une paroi latérale formée d'une seule pièce avec une base, en une forme ayant deux ou plus de deux régions agrandies, le procédé comprenant :
    la mise en place de l'ébauche du récipient dans une chambre (42) définie par un moule (40) ayant trois parties (82, 46, 84) espacées les unes des autres par des intervalles (86, 88) qui s'ouvrent dans la chambre du moule et dont chacun est sensiblement dans la position d'expansion maximale de l'une des régions agrandies ;
    l'expansion de l'ébauche du récipient radialement vers l'extérieur jusque sur la surface intérieure du moule en utilisant un fluide sous pression dans l'ébauche du récipient ; et
    le déplacement de deux des parties du moule vers la troisième partie pendant que la boíte est en cours d'expansion.
EP96932254A 1995-10-02 1996-09-17 Systemes et procedes de fabrication de boites metalliques decoratives faconnees Expired - Lifetime EP0853515B1 (fr)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
US467995P 1995-10-02 1995-10-02
US4679P 1995-10-02
US54242295A 1995-11-16 1995-11-16
US542422 1995-11-16
US08/551,073 US5746080A (en) 1995-10-02 1995-12-12 Systems and methods for making decorative shaped metal cans
US551073 1995-12-12
GBGB9603110.9A GB9603110D0 (en) 1996-02-14 1996-02-14 Reshaping of containers
GB9603110 1996-02-14
GB9604784 1996-03-06
GBGB9604784.0A GB9604784D0 (en) 1996-03-06 1996-03-06 Reshaping of containers
US62179596A 1996-03-22 1996-03-22
US08/683,575 US5832766A (en) 1996-07-15 1996-07-15 Systems and methods for making decorative shaped metal cans
US683575 1996-07-15
PCT/US1996/014914 WO1997012706A1 (fr) 1995-10-02 1996-09-17 Systemes et procedes de fabrication de boites metalliques decoratives faconnees
US621795 2003-07-16

Publications (2)

Publication Number Publication Date
EP0853515A1 EP0853515A1 (fr) 1998-07-22
EP0853515B1 true EP0853515B1 (fr) 2001-10-31

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EP96932252A Expired - Lifetime EP0853513B1 (fr) 1995-10-02 1996-09-17 Dispositifs et procedes de fabrication de boites metalliques decoratives faconnees
EP96932254A Expired - Lifetime EP0853515B1 (fr) 1995-10-02 1996-09-17 Systemes et procedes de fabrication de boites metalliques decoratives faconnees
EP96932253A Expired - Lifetime EP0853514B1 (fr) 1995-10-02 1996-09-17 Dispositifs et procedes de fabrication de boites metalliques decoratives

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EP96932252A Expired - Lifetime EP0853513B1 (fr) 1995-10-02 1996-09-17 Dispositifs et procedes de fabrication de boites metalliques decoratives faconnees

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EP96932253A Expired - Lifetime EP0853514B1 (fr) 1995-10-02 1996-09-17 Dispositifs et procedes de fabrication de boites metalliques decoratives

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Country Link
EP (3) EP0853513B1 (fr)
KR (3) KR19990063929A (fr)
CN (3) CN1202844A (fr)
AR (3) AR003716A1 (fr)
AU (3) AU719408B2 (fr)
BR (3) BR9610805A (fr)
CA (3) CA2233672C (fr)
DE (3) DE69616579T2 (fr)
DK (3) DK0853513T3 (fr)
ES (3) ES2163653T3 (fr)
ID (1) ID17216A (fr)
PL (3) PL183247B1 (fr)
TR (3) TR199800614T2 (fr)
WO (3) WO1997012704A1 (fr)

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US7584639B2 (en) 2003-06-27 2009-09-08 Crebocan Ag Method and device for the production of a can body, and can body
US7954354B2 (en) 2006-06-26 2011-06-07 Alcoa Inc. Method of manufacturing containers
EP2502684A1 (fr) 2011-03-21 2012-09-26 Crown Packaging Technology Inc Appareil de support de conteneur
US8322183B2 (en) 2006-05-16 2012-12-04 Alcoa Inc. Manufacturing process to produce a necked container
US9327338B2 (en) 2012-12-20 2016-05-03 Alcoa Inc. Knockout for use while necking a metal container, die system for necking a metal container and method of necking a metal container

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US5746080A (en) * 1995-10-02 1998-05-05 Crown Cork & Seal Company, Inc. Systems and methods for making decorative shaped metal cans
US5938389A (en) * 1996-08-02 1999-08-17 Crown Cork & Seal Technologies Corporation Metal can and method of making
GB9623364D0 (en) * 1996-11-09 1997-01-08 Metal Box Plc Reshaping of drawn and wall ironed containers
GB9726606D0 (en) * 1997-12-18 1998-02-18 Metal Box Plc Can shaping
ES2163954B1 (es) * 1998-08-07 2003-06-01 Suarez Carlos Infanzon Procedimiento para el fluidoconformado de recipientes metalicos, especialmente fabricados en acero inoxidable.
US20020162371A1 (en) * 2001-05-01 2002-11-07 Peter Hamstra Method of pressure-ram-forming metal containers and the like
CN1297410C (zh) * 2003-06-11 2007-01-31 私立逢甲大学 冲压罐的半色调变形图的制作方法
EP1586393B1 (fr) * 2004-04-16 2007-09-19 Impress Group B.V. Procédé de formage de corps de boîtes et dispositif de mise en oeuvre dudit procédé
US7191032B2 (en) 2004-05-14 2007-03-13 Novelis Inc. Methods of and apparatus for forming hollow metal articles
US9365344B2 (en) 2004-06-17 2016-06-14 Caprosol Ag Method for the production of a can body, and can body
EP1724090B1 (fr) 2005-05-19 2010-07-21 Mold-Masters (2007) Limited Buse d'injection avec manchon thermoconducteur et procédé pour sa production
BRPI0702306A2 (pt) * 2007-05-21 2009-01-13 Vlademir Moreno processo de repuxamento para conformaÇço de embalagens metÁlicas com conformaÇço de prÉ-pestana, e equipamento de repuxamento para conformaÇço de embalagens metÁlicas com conformaÇço de prÉ-pestana
EP2605873B1 (fr) 2010-08-20 2021-04-14 Alcoa USA Corp. Récipient métallique façonné et son procédé de fabrication
US10328477B2 (en) * 2011-12-30 2019-06-25 The Coca-Cola Company System and method for forming a metal beverage container using pressure molding
GB201205243D0 (en) 2012-03-26 2012-05-09 Kraft Foods R & D Inc Packaging and method of opening
GB2511559B (en) 2013-03-07 2018-11-14 Mondelez Uk R&D Ltd Improved Packaging and Method of Forming Packaging
GB2511560B (en) 2013-03-07 2018-11-14 Mondelez Uk R&D Ltd Improved Packaging and Method of Forming Packaging
CN103272961B (zh) * 2013-06-19 2015-09-09 舟山市普陀博达机械制造有限公司 异形罐体扩径装置
CN103801620B (zh) * 2014-01-23 2016-03-02 深圳华特容器股份有限公司 一种铁皮方罐罐身成型模具
CA3153969A1 (fr) 2014-05-04 2015-11-12 Belvac Production Machinery, Inc. Systemes et procedes de formation electromagnetique de recipients
US12103062B2 (en) 2014-05-04 2024-10-01 Belvac Production Machinery, Inc. Forming mold for reduction of parting lines
US10875073B2 (en) 2014-05-04 2020-12-29 Belvac Production Machinery, Inc. Systems and process improvements for high speed forming of containers using porous or other small mold surface features
US10486217B2 (en) * 2017-04-25 2019-11-26 Stolle Machinery Company, Llc Unitary body swing lever
DE102017118654B4 (de) 2017-08-16 2019-06-27 Schuler Pressen Gmbh Abstreckwerkzeuganordnung, Umformeinrichtung mit einer Abstreckwerkzeuganordnung sowie Verfahren zum Umformen eines napfförmigen Ausgangsteils
WO2019195083A1 (fr) * 2018-04-03 2019-10-10 Belvac Production Machinery, Inc. Systèmes et améliorations de procédé pour la formation à grande vitesse de récipients au moyen de petits éléments de surface de moule poreux ou autres
CN109719187B (zh) * 2019-02-03 2019-12-06 哈尔滨工业大学 一种非对称变径薄壁零件环向流动成形装置
CN114178411A (zh) * 2021-12-31 2022-03-15 潍坊倍力汽车零部件有限公司 一种减力式管件内高压成型模具

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NL291159A (fr) * 1962-08-17
US3757555A (en) * 1972-01-14 1973-09-11 Vermont Marble Co Can body expanding and flanging apparatus
GB8820585D0 (en) * 1988-08-31 1988-09-28 Metal Box Plc Pneumatic reshaping of cans
US5058408A (en) * 1990-01-30 1991-10-22 Aluminum Company Of America Method for partially annealing the sidewall of a container
US4947667A (en) * 1990-01-30 1990-08-14 Aluminum Company Of America Method and apparatus for reforming a container
GB2257073B (en) * 1991-07-04 1994-02-23 Cmb Foodcan Plc Apparatus and method for reshaping containers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7584639B2 (en) 2003-06-27 2009-09-08 Crebocan Ag Method and device for the production of a can body, and can body
US8322183B2 (en) 2006-05-16 2012-12-04 Alcoa Inc. Manufacturing process to produce a necked container
US7954354B2 (en) 2006-06-26 2011-06-07 Alcoa Inc. Method of manufacturing containers
EP2502684A1 (fr) 2011-03-21 2012-09-26 Crown Packaging Technology Inc Appareil de support de conteneur
WO2012126723A1 (fr) 2011-03-21 2012-09-27 Crown Packaging Technology, Inc. Appareil de maintien de contenant
US9327338B2 (en) 2012-12-20 2016-05-03 Alcoa Inc. Knockout for use while necking a metal container, die system for necking a metal container and method of necking a metal container

Also Published As

Publication number Publication date
WO1997012706A1 (fr) 1997-04-10
DK0853513T3 (da) 2001-11-05
CA2233672C (fr) 2006-06-06
BR9610805A (pt) 1999-07-13
MX9802550A (es) 1998-11-30
ES2163654T3 (es) 2002-02-01
EP0853515A1 (fr) 1998-07-22
CA2233675A1 (fr) 1997-04-10
DK0853514T3 (da) 2002-02-18
CN1202842A (zh) 1998-12-23
PL183246B1 (pl) 2002-06-28
PL183248B1 (pl) 2002-06-28
TR199800614T2 (xx) 1998-07-21
ID17216A (id) 1997-12-11
BR9610813A (pt) 1999-07-13
TR199800616T2 (xx) 1999-09-21
WO1997012705A1 (fr) 1997-04-10
EP0853514A1 (fr) 1998-07-22
DK0853515T3 (da) 2002-02-25
PL326035A1 (en) 1998-08-17
EP0853513A1 (fr) 1998-07-22
KR19990063928A (ko) 1999-07-26
PL183247B1 (pl) 2002-06-28
PL326036A1 (en) 1998-08-17
DE69616579T2 (de) 2002-05-29
DE69614559T2 (de) 2001-11-22
EP0853513B1 (fr) 2001-08-16
DE69616578D1 (de) 2001-12-06
DE69616578T2 (de) 2002-05-29
BR9610795A (pt) 1999-07-13
AU717400B2 (en) 2000-03-23
CN1202844A (zh) 1998-12-23
KR19990063930A (ko) 1999-07-26
AR003717A1 (es) 1998-09-09
ES2163653T3 (es) 2002-02-01
WO1997012704A1 (fr) 1997-04-10
AU7112196A (en) 1997-04-28
CA2233672A1 (fr) 1997-04-10
CA2233642A1 (fr) 1997-04-10
ES2160836T3 (es) 2001-11-16
AR003716A1 (es) 1998-09-09
KR19990063929A (ko) 1999-07-26
AU719408B2 (en) 2000-05-11
CA2233675C (fr) 2007-11-20
AR003715A1 (es) 1998-09-09
CN1202843A (zh) 1998-12-23
AU2012797A (en) 1997-04-28
DE69616579D1 (de) 2001-12-06
EP0853514B1 (fr) 2001-10-31
DE69614559D1 (de) 2001-09-20
MX9802548A (es) 1998-11-30
CA2233642C (fr) 2007-03-27
AU718654B2 (en) 2000-04-20
AU7112296A (en) 1997-04-28
TR199800615T1 (xx) 1998-06-22
MX9802549A (es) 1998-11-30
PL326034A1 (en) 1998-08-17

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