EP0852973A1 - Procédé de fabrication d'une boite métallique de forme et boite métallique alimentaire obtenue par ce procédé - Google Patents
Procédé de fabrication d'une boite métallique de forme et boite métallique alimentaire obtenue par ce procédé Download PDFInfo
- Publication number
- EP0852973A1 EP0852973A1 EP97402849A EP97402849A EP0852973A1 EP 0852973 A1 EP0852973 A1 EP 0852973A1 EP 97402849 A EP97402849 A EP 97402849A EP 97402849 A EP97402849 A EP 97402849A EP 0852973 A1 EP0852973 A1 EP 0852973A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- peripheral skirt
- blank
- zone
- side wall
- mode
- 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
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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
- B21D51/26—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
- the subject of the present invention is a method manufacturing a metal can and a metallic food can obtained by this process.
- Food metal boxes are commonly used as beverage cans to contain liquids or as cans to contain solid food.
- This kind of boxes can be for example from cylindrical, elliptical, square or rectangular section or hexagonal and comprises, on the one hand, a bottom and a side wall formed integrally with this bottom and, on the other hand, a cover crimped on the side wall.
- the drink cans that are usually cylindrical section are generally obtained by a stamping-stretching process.
- the first consists in stamping a precouple and to re-stamp this precouple to form a cup having a bottom and a peripheral edge, then to stretch the peripheral edge of the cup so to get the box with a bottom and a side wall come of matter with this background.
- the second technique is to stamp a metal blank to form a cup comprising a bottom and a peripheral edge and calibrate this cup to give it the diameter of the box, then stretch the peripheral edge of the cup to obtain the box with its bottom and its side wall coming from matter with this background.
- the free edge of the side wall is outlined, then we form the neck and the crimping edge according to two conventional techniques, either a matrix shrinking technique, or a wheel shrinking technique.
- Tins with a bottom and a side wall made of material with this bottom are generally obtained by a stamping technique and deep drawing in several passes.
- box manufacturers are looking for to make boxes of reduced weight, that is to say with thinner walls of thickness.
- the dislocations generated in the metal are oriented in the same direction which limits the possibilities of subsequent deformation.
- the metal gets breaks due to high mechanical characteristics metal and therefore it is impossible to form this area by a modification of the perimeter.
- the side wall therefore has a large heterogeneity of these mechanical characteristics with portions with more or less mechanical characteristics lower which has drawbacks.
- the object of the invention is to avoid these drawbacks by proposing a box manufacturing process shaped metal which gives metal back deformation capacities to be able to realize in particular on the side wall at least one shaped area without risk of metal breaking in this area and without lead to profound changes in the line of production of these boxes.
- the invention also relates to a box metallic food, characterized in that it is obtained by the process mentioned above.
- the method according to the invention applies also to metal boxes of section shape any, such as for example cylindrical, elliptical, square, rectangular section or hexagonal.
- Fig. 1 there is shown schematically a metal box of shape designated in its together by reference 1 which has a bottom 2 provided a foot 2a and a dome 2b and a side wall 3 integral with said bottom 2.
- the upper end of the side wall 3 is provided with a neck 4 and a crimping edge with a cover, not shown.
- This kind of metal can is performed as follows.
- a metal blank made of steel or aluminum or aluminum alloy, a blank 10 formed of a bottom 11 and a peripheral skirt 12, as shown in Fig. 2.
- Foot 2a and dome 2b of box 1 can be done directly during this first step or done later.
- the draft 10 is generally obtained by a stamping-stretching process which consists of stamping the metal blank to form a cup comprising a bottom and a peripheral edge and to calibrate this cup to give it the diameter of the box, then stretch the peripheral edge of the cup so obtain draft 10.
- the Applicant realized that by performing a deformation in constricted mode or in extension mode on the area of the peripheral skirt 12 of the blank 10, the dislocations generated in the metal constituting this area reorganize which allows to be able create the shaped area 5 without risk of breakage of metal by modifying the perimeter, i.e. by an increase or decrease in this scope.
- the process therefore consists, during a second step, to be carried out on at least one area of the peripheral skirt 12 intended to produce the area form 5 of the side wall 3, a deformation operation in constricted mode or in extension mode and, during a third step, to shape the peripheral skirt 12 of the blank 10 to obtain the side wall 3 from box 1.
- Fig. 3 the diagram is shown rational deformation of a metal blank according to the three directions ⁇ 1, ⁇ 2 and ⁇ 3, ⁇ 1 being for example the deformation in the longitudinal direction, ⁇ 2 being for example the deformation in the transverse direction and ⁇ 3 being the deformation in thickness.
- ⁇ 1 is greater than ⁇ 2 (not in absolute value).
- the mode necked including pure necked mode and mode constrained extension and expansion mode including extension mode and biaxial expansion mode.
- the deformation mode in pure shrinking leads to an increase in thickness and the other modes of deformation cause a decrease of thickness.
- the restricted mode can be achieved with an increase in thickness in the case of the mode shrinking pure or with reduction in thickness in the case of extension restricted mode.
- At least one area of the skirt is produced device 12 of the blank 10 intended to carry out the shaped area 5 of the side wall 3, a shrinking deformation operation, i.e. with increase in the thickness of the area under consideration peripheral skirt 12 in the case of pure necked mode or with reduction in the thickness of said area of the skirt device 12 in the case of expansion constrained mode or in extension mode, i.e. with reduction of the thickness of this zone of the peripheral skirt 12.
- this peripheral skirt 12 can have a portion of constant section only on a part of its height or have a flared shape.
- zone 12a we exercise in zone 12a, ie on either side of the peripheral skirt 12 included in this zone, a balanced pressure P1 around 20 bars, for example by air injection under pressure.
- the two greenhouses 20 and 21 can be movable towards each other.
- the pressure P1 keeps zone 12a of the skirt device 12 and avoid a buckling of this area 12a.
- zone 12a The distortion in pure shrinking mode as well performed in zone 12a allows the metal to be restored in this zone deformation capacities to be able to subsequently perform the shaped area 5.
- the shaped area 5 is then obtained conventionally for example by forming using of fluid or by tools with expanding segments or by stamping.
- This shaped area 5 can be in outward relief of the side wall 3 of the box 1 or towards the inside of this side wall 3 i.e. with an increase in the scope of the side wall 3 or either with reduction of said perimeter.
- the blank 10 is placed in a form 22 which includes a central well intended to receive this blank 10 and a bottom 23 for supporting said draft 10.
- the pressure P1 keeps the skirt device 12 against form 22 and avoid its buckling.
- the distortion in pure shrinking mode as well carried over the entire height of the peripheral skirt 12 allows to give back to the metal in this peripheral skirt deformation capacities to achieve a set area in shape extending in particular over the entire height of said peripheral skirt 12.
- form 22 has at its upper part a rim 22a conforming to the external shape of the neck 12b as shown in Fig. 6.
- a zone 12a of the peripheral skirt 12 of the blank 10 a deformation in extension mode.
- a shape 25 which has at its periphery a footprint 25a of height corresponding to the height of zone 12a on which the deformation in extension mode and outside said blank 10 a counterform 26 which includes a rod 26a.
- This counterform 26 is radially displaceable towards the shape 25.
- the distortion operation in shrunken mode of zone 12a is achieved by radially moving the counterform 26 to form 25 to form a first elementary area, then going down the counterform 26 to form a succession of elementary zones overlapping between them and this over the entire height of footprint 5a.
- the form 25 can be disposed outside the peripheral skirt 12 of the blank 10 and the counterform 26 can be arranged at the interior of said peripheral skirt 12.
- Deformation in extension mode as well performed on zone 12a allows the metal to be restored in this zone 12 has deformation capacities to be able to make the shaped area 5 of the side wall 3.
- This shaped area 5 is obtained as for the previous embodiments for example by forming using a fluid or by segment tools expandable or buffered.
- the deformation in mode extension can also be carried out over the entire height of the peripheral skirt 12, as shown in Fig. 8.
- the form 25 comprises at its periphery a footprint 25b of corresponding height at the height of the peripheral skirt 12.
- the form 25 can be disposed outside the peripheral skirt 12 of the blank 10 and the form 26 can be arranged inside of this peripheral skirt 12.
- a shape 27 which has an imprint 27a which corresponds to the zone 12a of the peripheral skirt 12 on which the mode deformation must be performed extension and outside of said blank 10 a counterform 28 which has a projecting part 28a of shape complementary to the imprint 27a of the shape 27.
- This counterform 28 is radially displaceable towards the shape 27.
- the deformation operation in extension mode of zone 12a is carried out in a single pass in radially moving the counterform 28 towards the form 27.
- the form 27 can be disposed outside the peripheral skirt 12 of the blank 10 and the counterform 28 can be arranged inside said peripheral skirt 12.
- the element arranged at the interior of this peripheral skirt can be produced in the form of a tool composed of expandable segments to allow passage through the neck.
- Figs. 10A to 10D a other embodiment of the method according to the invention in which a deformation is carried out in constricted mode of the entire height of the peripheral skirt 12 of draft 10.
- the punch 31 has a central bore tubular 32 for the injection of pressurized air, such as we will see it later.
- the internal perimeter of the matrix 30 is less than the outer perimeter of the peripheral skirt 12 of draft 10.
- This blank 10 is supported by a pusher 32 vertically movable.
- the pusher 32 rises gradually while the matrix 30 and the fish 31 are fixed.
- the upper edge of the peripheral skirt 12 of the blank 10 engages in the space provided between the die 30 and the punch 31 so as to gradually reduce the perimeter of the peripheral skirt 12.
- this punch 31 is reassembled, as shown in FIG. 10C.
- each pass is therefore characterized by a determined reduction in the scope by the dimensions of each set of tools used.
- the shaped area 5 is obtained in a conventional manner for example by forming using a fluid or by segment tools expandable or buffered.
- FIGS. 11A to 11D there is shown a variant of the previous embodiment which applies more particularly to the blanks 10 whose bottom has already been formed, as shown in FIG. 11A.
- a calibration tool consisting of a matrix 30 identical to that of the previous one embodiment and a punch 33 comprising a tubular central bore 33a for air passage under pressure.
- the bottom wall of the punch 33 has a concave profile.
- the blank 10 is supported by a pusher 34 whose upper face has a profile convex.
- Pusher 34 gradually lifts the blank 10 so as to engage the upper edge of the peripheral skirt 12 of this blank 10 in space formed between the die 30 and the punch 33, as shown in Fig. 11B.
- Pressurized air is injected through the tubular bore 33a between the bottom wall of the punch 33 and the bottom 11 of the blank 10.
- Pusher 34 continues its movement until the bottom wall of the punch 33 comes into contact with the bottom 11 of the blank 10, as shown in Fig. 11C.
- the assembly constituted by the punch 33, the blank 10 and the pusher 34 is lifted so to pass the entire peripheral skirt 12 in the matrix 30 to calibrate the skirt device 12 over its entire height.
- the distortion in mode thus shrinks performed by calibrating the peripheral skirt 12 of the blank 10 makes it possible to restore the metal constituting this peripheral skirt of the deformation capacities for the realization of the shaped area 5 on the box 1.
- Figs. 12A to 12C a another mode of implementation in which a double operation in restricted mode or in extension mode.
- a blank 10 is produced from a metal blank formed of a bottom 11 and a peripheral skirt 12 (Fig. 12A).
- the bottom 11 is flat or has a foot and a dome formed during this stage.
- this first operation was carried out on an area 12a of the peripheral skirt. But this first operation can be performed on several areas of the peripheral skirt 12 or over the whole of said peripheral skirt 12.
- This first deformation operation in restricted mode or in extension mode therefore allowed restore to the metal in zone 12a the capacities of deformation to be able to achieve, during a third step, a shaped area 5, as shown in Fig. 12B.
- This shaped area 5 can also be carried out with a reduction in the perimeter of said peripheral skirt 12.
- this shaped area 5 After performing this shaped area 5, it is carried out by one of the modes of implementation described above, on a portion 12c of this zone shaping 5, a second deformation operation in shrunk mode or extension mode to give back to the metal constituting this portion 12c of the capacities of deformation to be able to create a new set area in shape 5a on the first shaped area 5, as shown in FIG. 12C.
- This shaped area 5a can also be achieved with an increase in the scope of the first shaped area 5.
- the process according to the invention for manufacturing of shaped metal boxes has the advantage of ability to make on at least part of the skirt peripheral of a blank, at least one area set form without risk of metal breaking at the time of formation of this area.
- the shaping of the skirt area peripheral of the blank intended to realize the zone shaping of the side wall of the box can be achieved by increasing or decreasing the scope of said shaped area.
- the shaping of the the peripheral skirt of the blank intended to produce the shaped area of the side wall of the box can be achieved by increasing the perimeter in some portions of this area and decreasing the perimeter in other portions of said shaped area.
- the method according to the invention can be implemented works from a metal blank in steel, in aluminum or aluminum alloy and the operation of deformation in constricted mode or in extension mode can be made on blanks of any cross-section, i.e. cylindrical, elliptical, square rectangular or hexagonal or on blanks whose peripheral skirt has a flared shape.
- the shaped area can be carried out on a or more portions of the side wall of the box or over the entire height or the entire perimeter of this side wall or over the entire height and over all the perimeter of said side wall.
- the method according to the invention applies generally in the manufacture of boxes food, that is to say drink cans for liquids or cans for food solid.
- This process also has the advantage of be able to be implemented without requiring modifications production lines for boxes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Formation And Processing Of Food Products (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Abstract
Description
- au cours d'une première étape, on réalise, à partir d'un flan métallique, une ébauche formée d'un fond et d'une jupe périphérique,
- au cours d'une seconde étape, on réalise sur au moins une zone de la jupe périphérique destinée à réaliser la zone mise en forme de la paroi latérale, une opération de déformation en mode rétreint ou en mode extension,
- et au cours d'une troisième étape, on met en forme la jupe périphérique de l'ébauche pour obtenir la paroi latérale de la boíte.
- la jupe périphérique de l'ébauche possède, sur au moins une partie de sa hauteur, une portion à section constante,
- la jupe périphérique de l'ébauche possède une section constante sur toute sa hauteur,
- la jupe périphérique de l'ébauche possède une forme évasée,
- au cours de la seconde étape, on réalise l'opération de déformation en mode rétreint ou en mode extension sur toute la hauteur de la jupe périphérique de l'ébauche,
- au cours de la troisième étape, on réalise la mise en forme de la zone de la jupe périphérique destinée à réaliser la zone mise en forme de la paroi latérale en augmentant le périmètre de ladite zone,
- au cours de la troisième étape, on réalise la mise en forme de la zone de la jupe périphérique destinée à réaliser la zone de mise en forme de la paroi latérale en diminuant le périmètre de ladite zone,
- au cours de la troisième étape, on réalise la mise en forme de la zone de la jupe périphérique destinée à réaliser la zone mise en forme de la paroi latérale en augmentant le périmètre dans certaines portions de cette zone et en diminuant ledit périmètre dans d'autres portions de ladite zone,
- le flan métallique est en acier ou en aluminium ou en alliage d'aluminium.
- la Fig. 1 est une vue en demi-coupe longitudinale d'un mode de réalisation d'une boite de forme obtenue par le procédé selon l'invention,
- la Fig.2 est une vue en coupe longitudinale d'un exemple de réalisation d'une ébauche à partir de laquelle est réalisée une boíte de forme par le procédé selon l'invention,
- la Fig. 3 représente le diagramme de déformation rationnelle,
- les Figs. 4 à 12 sont des vues schématiques en coupe longitudinale montrant différents modes de mise en oeuvre du procédé de fabrication selon l'invention.
Claims (11)
- Procédé de fabrication d'une boíte métallique de forme (1) comprenant un fond (2) et une paroi latérale (3) venue de matière avec ledit fond (2), ladite paroi latérale (3) comportant au moins une zone mise en forme (5, 5a), caractérisé en ce que :au cours d'une première étape, on réalise, à partir d'un flan métallique, une ébauche (10) formée d'un fond (11) et d'une jupe périphérique (12),au cours d'une seconde étape, on réalise sur au moins une zone (12a, 12c) de la jupe périphérique (12) destinée à réaliser la zone mise en forme (5, 5a) de la paroi latérale (3), une opération de déformation en mode rétreint et en mode extension,et au cours d'une troisième étape, on met en forme la jupe périphérique (12) de l'ébauche pour obtenir la paroi latérale (3) de la boíte (1).
- Procédé selon la revendication 1, caractérisé en ce que la jupe périphérique (12) de l'ébauche (10) possède sur au moins une partie de sa hauteur une portion à section constante.
- Procédé selon la revendication 1, caractérisé en ce que la jupe périphérique (12) de l'ébauche (10) possède une section constante sur toute sa hauteur.
- Procédé selon la revendication 1, caractérisé en ce que la jupe périphérique (12) de l'ébauche (10) possède une forme évasée.
- Procédé selon la revendication 1 ou 3, caractérisé en ce que, au cours de la seconde étape, on réalise l'opération de déformation en mode rétreint ou en mode extension sur toute la hauteur de la jupe périphérique (12) de l'ébauche (10).
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, au cours de la troisième étape, on réalise la mise en forme de la zone (12a, 12c) de la jupe périphérique destinée à réaliser la zone mise en forme (5,5a) de la paroi latérale (3) en augmentant le périmètre de ladite zone.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, au cours de la troisième étape, on réalise la mise en forme de la zone (12a, 12c) de la jupe périphérique (12) destinée à réaliser la zone mise en forme (5, 5a) de la paroi latérale (3) en diminuant le périmètre de ladite zone.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, au cours de la troisième étape, on réalise la mise en forme de la zone (12a, 12c) de la jupe périphérique (12) destinée à réaliser la zone mise en forme (5, 5a) de la paroi latérale (3) en augmentant le périmètre dans certaines portions de cette zone et en diminuant ledit périmètre dans d'autres portions de ladite zone.
- Procédé selon la revendication 1, caractérisé en ce que le flan métallique est en acier.
- Procédé selon la revendication 1, caractérisé en ce que le flan métallique est en aluminium ou en alliage d'aluminium.
- Boíte métallique alimentaire, caractérisée en ce qu'elle est obtenue par le procédé selon l'une quelconque des revendications précédentes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9615229 | 1996-12-11 | ||
FR9615229A FR2756757B1 (fr) | 1996-12-11 | 1996-12-11 | Procede de fabrication d'une boite metallique de forme et boite metallique alimentaire obtenue par ce procede |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0852973A1 true EP0852973A1 (fr) | 1998-07-15 |
EP0852973B1 EP0852973B1 (fr) | 2002-04-03 |
Family
ID=9498559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97402849A Expired - Lifetime EP0852973B1 (fr) | 1996-12-11 | 1997-11-26 | Procédé de fabrication d'une boite métallique de forme et boite métallique alimentaire obtenue par ce procédé |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0852973B1 (fr) |
AT (1) | ATE215410T1 (fr) |
DE (1) | DE69711586T2 (fr) |
DK (1) | DK0852973T3 (fr) |
ES (1) | ES2173406T3 (fr) |
FR (1) | FR2756757B1 (fr) |
PT (1) | PT852973E (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7934410B2 (en) | 2006-06-26 | 2011-05-03 | Alcoa Inc. | Expanding die and method of shaping containers |
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 |
US9707615B2 (en) | 2010-08-20 | 2017-07-18 | Alcoa Usa Corp. | Shaped metal container and method for making same |
JP2018512277A (ja) * | 2014-12-30 | 2018-05-17 | モンテベロ テクノロジー サービシズ リミテッド | 衝撃押出し加工法、工具および製品 |
US11040387B2 (en) | 2014-03-25 | 2021-06-22 | Montebello Technology Services Ltd. | Method for blow molding metal containers |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0733415A1 (fr) * | 1995-03-21 | 1996-09-25 | Sollac S.A. | Procédé de fabrication d'une boîte métallique de forme |
EP0733413A1 (fr) * | 1995-03-21 | 1996-09-25 | Sollac S.A. | Procédé de fabrication d'une boîte métallique de forme |
-
1996
- 1996-12-11 FR FR9615229A patent/FR2756757B1/fr not_active Expired - Fee Related
-
1997
- 1997-11-26 PT PT97402849T patent/PT852973E/pt unknown
- 1997-11-26 DE DE69711586T patent/DE69711586T2/de not_active Expired - Fee Related
- 1997-11-26 DK DK97402849T patent/DK0852973T3/da active
- 1997-11-26 AT AT97402849T patent/ATE215410T1/de not_active IP Right Cessation
- 1997-11-26 EP EP97402849A patent/EP0852973B1/fr not_active Expired - Lifetime
- 1997-11-26 ES ES97402849T patent/ES2173406T3/es not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0733415A1 (fr) * | 1995-03-21 | 1996-09-25 | Sollac S.A. | Procédé de fabrication d'une boîte métallique de forme |
EP0733413A1 (fr) * | 1995-03-21 | 1996-09-25 | Sollac S.A. | Procédé de fabrication d'une boîte métallique de forme |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7934410B2 (en) | 2006-06-26 | 2011-05-03 | Alcoa Inc. | Expanding die and method of shaping containers |
US7954354B2 (en) | 2006-06-26 | 2011-06-07 | Alcoa Inc. | Method of manufacturing containers |
US9707615B2 (en) | 2010-08-20 | 2017-07-18 | Alcoa Usa Corp. | Shaped metal container and method for making same |
US10464707B2 (en) | 2010-08-20 | 2019-11-05 | Alcoa Usa Corp. | Shaped metal container and method for making same |
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 |
US11040387B2 (en) | 2014-03-25 | 2021-06-22 | Montebello Technology Services Ltd. | Method for blow molding metal containers |
JP2018512277A (ja) * | 2014-12-30 | 2018-05-17 | モンテベロ テクノロジー サービシズ リミテッド | 衝撃押出し加工法、工具および製品 |
EP3240646A4 (fr) * | 2014-12-30 | 2018-11-14 | Montebello Technology Services Ltd. | Procédé d'extrusion par percussion, outillage et produit |
JP7097182B2 (ja) | 2014-12-30 | 2022-07-07 | モンテベロ テクノロジー サービシズ リミテッド | 衝撃押出し加工法、工具および製品 |
US11383281B2 (en) | 2014-12-30 | 2022-07-12 | 1949467 Ontario Inc. | Impact extrusion method, tooling and product |
US11865600B2 (en) | 2014-12-30 | 2024-01-09 | Montebello Technology Services Ltd. | Impact extrusion method, tooling and product |
Also Published As
Publication number | Publication date |
---|---|
DE69711586D1 (de) | 2002-05-08 |
DK0852973T3 (da) | 2002-07-29 |
DE69711586T2 (de) | 2002-10-02 |
FR2756757B1 (fr) | 1999-02-19 |
FR2756757A1 (fr) | 1998-06-12 |
ES2173406T3 (es) | 2002-10-16 |
PT852973E (pt) | 2002-08-30 |
EP0852973B1 (fr) | 2002-04-03 |
ATE215410T1 (de) | 2002-04-15 |
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