EP2303489A1 - Procédé permettant de produire une bande en aluminium à des fins d'emballage et bande ainsi produite - Google Patents

Procédé permettant de produire une bande en aluminium à des fins d'emballage et bande ainsi produite

Info

Publication number
EP2303489A1
EP2303489A1 EP09732078A EP09732078A EP2303489A1 EP 2303489 A1 EP2303489 A1 EP 2303489A1 EP 09732078 A EP09732078 A EP 09732078A EP 09732078 A EP09732078 A EP 09732078A EP 2303489 A1 EP2303489 A1 EP 2303489A1
Authority
EP
European Patent Office
Prior art keywords
strip
decorative
band
aluminum
elements
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
EP09732078A
Other languages
German (de)
English (en)
Other versions
EP2303489B1 (fr
Inventor
Volker Denkmann
Wolf ÖTTING
Andreas Siemen
Wilhelm Schenkel
Boris Kasper
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.)
Speira GmbH
Original Assignee
Hydro Aluminium Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40821691&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2303489(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Priority to PL09732078T priority Critical patent/PL2303489T3/pl
Publication of EP2303489A1 publication Critical patent/EP2303489A1/fr
Application granted granted Critical
Publication of EP2303489B1 publication Critical patent/EP2303489B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B21H8/005—Embossing sheets or rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness

Definitions

  • the invention relates to a method for producing a strip of aluminum or an aluminum alloy, in particular for packaging purposes, preferably for the production of cans, can lids or can closures. Moreover, the invention relates to a band produced by the process according to the invention, in particular for packaging purposes.
  • Aluminum bands exist.
  • An example of such a packaging is a beverage can.
  • An individualization of the packaging can be achieved, for example, via a print which is applied to the packaging material manufacturer.
  • emboss patterns, symbols or other identification elements in, for example, an aluminum strip immediately prior to the production of the packaging means.
  • embossing tools or embossing means are to be provided by the processor of the aluminum strip.
  • an identification element such as a logo
  • the embossing rolls only lead to a plastic deformation of the areas of the strip provided with an identification element.
  • the embossing rolls from the roll surface on protruding areas, which are used for impressing example of a logo.
  • the remaining band areas, ie the band areas lying between the logos, however, are not plastically deformed during embossing.
  • the present invention has the object to provide a method for producing an individualized tape for packaging purposes, with which a secure embossing decor or labeling elements can be made in the band, without additional steps, for example, the packaging materials manufacturer, necessary.
  • the above-described object is achieved in that decorative or other marking elements are embossed into the strip in the last cold pass of the cold rolling and the strip thickness is greater in the area of decorative and identification elements than in the other areas of the strip .
  • the band areas which are not to be embossed by the marking element or the company logo, are reduced more in their thickness than the areas to be embossed, so that they have a greater strip thickness.
  • At least one of the work rolls used in cold rolling has depressions for impressing the decorative or identification elements into the strip, so that in the roll gap the material of the rolled strip flows into the depressions and thus leads to areas of increased strip thickness.
  • the amplitude of the embossing profile in the belt is due to the wells in the work roll a maximum of 4 microns.
  • the depressions of the work roll are preferably laser texturized. However, other methods for producing the depressions in the roller can also be used.
  • both work rolls have corresponding depressions, it is crucial that the band areas, which have no decorative or marking elements, are more strongly reduced in thickness than the other, the decorative or labeling elements having areas.
  • a particularly cost-effective embodiment of the method according to the invention can be provided by stamping on the decorative or
  • Labeling elements inline with the production of the tape for example, for packaging purposes.
  • Inline in this case means that a production line is used for the production of unembossed tapes, and at least one work roll of the last cold roll pass is replaced by a work roll having decorative or marking elements and this work roll impresses the decorating or marking elements into the strip for packaging purposes ,
  • the strip is then wound on a coil on the finish rolling, so that a decorative or marking elements exhibiting tape the further steps, such as steps for producing a can lid or a can closure, can be supplied.
  • a particularly reliable insertion of the decorative or marking elements in the band can be achieved in that the stitch loss during the formative roll pass between 20% and 40%. It has been found that embossing of the strip is possible even with these stitches and leads to particularly good and clean embossing results.
  • Embodiment of the method according to the invention achieved in particular by the last, formative roll pass in a six-high rolling mill.
  • the band end thickness is 0.15 mm to 0.5 mm, preferably 0.2 to 0.35 mm.
  • This final strip thickness is particularly preferably used for the production of packaging, for example, cans, can lids or can closures.
  • the tape can also be used for other purposes or for other packaging.
  • the band consists of a 5xxx aluminum alloy, which also achieves very high strength values in addition to a particularly good forming behavior.
  • the object indicated above is achieved by a strip produced by the method according to the invention, wherein the strip comprises embossed decorative and identification elements and the strip thickness is greater in the region of the decorative or marking elements than in the remaining areas of the strip ,
  • the tape according to the invention is individualized by the embossed decorative or marking elements without additional costs, for example due to a further working step.
  • Fig. 1 is a schematic view of a finishing train for carrying out the method according to the invention for
  • Fig. 2 is a pair of work rolls of the finishing stand of Fig. 1 and
  • Embodiment of a tape according to the invention for packaging purposes.
  • Fig. 1 shows an embodiment of a finishing train 1 for cold rolling an aluminum strip 2, which has been produced for example by hot rolling a billet.
  • the aluminum strip 2 is unwound from an unwinding reel 3 and fed to further processing steps 4.
  • Work steps can consist for example of a cold rolling and a strip-shaped intermediate annealing. They are, however not necessary for the practice of the present invention.
  • the steps 4 can therefore also be omitted, if, for example, the strip is batchwise annealed, ie, wound up on a coil, and then fed to the last pass.
  • the strip is rolled to its final thickness, preferably with a reduction of between 20 and 40%.
  • the work roll 5a recesses for embossing decorative or other labeling elements, which leads in the finish rolling pass for the introduction of areas with increased strip thickness, namely the areas of the decorative or marking elements.
  • the six-high rolling mill other rolling mills are used. So far, however, good embossing results have only been proven on a six-high rolling stand.
  • the aluminum strip thus rolled to final thickness is then wound onto a take-up reel 6. Before winding, however, further work steps, for example a surface treatment, can be carried out.
  • the final thickness of the aluminum strip in the present embodiment is 0.2 to 0.35 mm.
  • Aluminum alloy preferably an aluminum alloy of type 5xxx, enables a particularly high strength and at the same time a good formability of the aluminum strip during further processing, even with the small wall thicknesses.
  • the individualization of the aluminum strip with the method according to the invention makes it possible for the downstream processor to label the products produced therefrom without having to resort to other technologies, for example the additional printing or the like. All additional work steps increase the manufacturing costs which are particularly important for these products.
  • the pair of work rolls 5 a, 5 b used in FIG. 1 is shown schematically in a perspective view. While the work roll 5a has recesses 7 which serve to impress the decorative or marking elements in the aluminum strip, no depressions are provided on the work roll 5b.
  • the tape thus produced therefore, has decorative or
  • Both work rolls 5a, 5b have different cut structures to optimize flow of material into the recesses during finish rolling of the strip, so that flow of the aluminum material into the recesses of the work roll 5a in the roll gap during finish rolling is assisted. But it is also possible that both work rolls have 5a and 5b recesses for impressing decorative or identification elements.
  • an aluminum strip 2 is wound onto a coil for packaging purposes, which has not been so much reduced in thickness in the area of the decorative elements 8 and thus has a greater strip thickness than in the others, not with decorative or identification elements provided areas 9 of the tape. This results in a maximum embossing profile of 4 ⁇ m.

Abstract

L'invention concerne un procédé permettant de produire une bande, en aluminium ou dans un alliage d'aluminium, à des fins d'emballage, en particulier pour des boîtes, des couvercles de boîte ou des fermetures de boîte. Le but consistant à mettre à disposition un procédé permettant de produire une bande individualisée en aluminium à des fins d'emballage, avec lequel il est d'imprimer da manière sûre des éléments de décor ou de marquage, sans que des étapes de travail supplémentaires soient nécessaires par exemple chez le fabricant de produits d'emballage, est atteint du fait que des éléments de décor ou d'autres éléments de marquage sont imprimés dans la bande (2) lors de la dernière passe (5) de laminage à froid et que l'épaisseur de bande dans la région des éléments de décor et de marquage est plus grande que dans les autres régions de la bande.
EP09732078A 2008-04-18 2009-04-17 Procédé permettant de produire une bande en aluminium à des fins d'emballage et bande ainsi produite Revoked EP2303489B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09732078T PL2303489T3 (pl) 2008-04-18 2009-04-17 Sposób wytwarzania taśmy aluminiowej do celów opakowaniowych i w ten sposób wytworzona taśma

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008019768A DE102008019768A1 (de) 2008-04-18 2008-04-18 Verfahren zur Herstellung eines Bandes für Verpackungszwecke
PCT/EP2009/054613 WO2009127730A1 (fr) 2008-04-18 2009-04-17 Procédé permettant de produire une bande en aluminium à des fins d’emballage et bande ainsi produite

Publications (2)

Publication Number Publication Date
EP2303489A1 true EP2303489A1 (fr) 2011-04-06
EP2303489B1 EP2303489B1 (fr) 2012-06-06

Family

ID=40821691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09732078A Revoked EP2303489B1 (fr) 2008-04-18 2009-04-17 Procédé permettant de produire une bande en aluminium à des fins d'emballage et bande ainsi produite

Country Status (13)

Country Link
US (1) US10105748B2 (fr)
EP (1) EP2303489B1 (fr)
JP (2) JP5762948B2 (fr)
KR (1) KR20110026413A (fr)
CN (1) CN102036768B (fr)
AU (1) AU2009237610B2 (fr)
CA (1) CA2721965C (fr)
DE (1) DE102008019768A1 (fr)
ES (1) ES2392070T3 (fr)
PL (1) PL2303489T3 (fr)
RU (1) RU2483826C2 (fr)
WO (1) WO2009127730A1 (fr)
ZA (1) ZA201007765B (fr)

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CN101869910A (zh) * 2010-06-04 2010-10-27 山东泰山建能机械集团有限公司 冷轧不锈钢带特殊表面的加工方法
PL2572807T3 (pl) * 2011-09-22 2014-11-28 Constantia Teich Gmbh Sposób wytwarzania folii aluminiowej ze zintegrowanymi cechami zabezpieczającymi
AT512773B1 (de) * 2012-10-29 2013-11-15 Constantia Teich Gmbh Verfahren zum Herstellen einer Aluminiumfolie mit integrierten Sicherheitsmerkmalen
US10744553B2 (en) * 2015-06-10 2020-08-18 Aperam Rolled stainless steel object and manufacturing method therefor
ES2610971B1 (es) * 2015-09-30 2018-02-09 Acr Ii Aluminium Group Cooperatief U.A. Proceso de grabación de superficies de aluminio

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Also Published As

Publication number Publication date
RU2483826C2 (ru) 2013-06-10
JP2014128833A (ja) 2014-07-10
AU2009237610A1 (en) 2009-10-22
ES2392070T3 (es) 2012-12-04
CA2721965A1 (fr) 2009-10-22
EP2303489B1 (fr) 2012-06-06
ZA201007765B (en) 2011-07-27
AU2009237610B2 (en) 2013-09-12
KR20110026413A (ko) 2011-03-15
WO2009127730A1 (fr) 2009-10-22
JP5762948B2 (ja) 2015-08-12
CA2721965C (fr) 2014-07-08
DE102008019768A1 (de) 2009-10-22
CN102036768B (zh) 2017-03-01
US10105748B2 (en) 2018-10-23
PL2303489T3 (pl) 2012-11-30
RU2010146996A (ru) 2012-05-27
JP2011520611A (ja) 2011-07-21
CN102036768A (zh) 2011-04-27
US20110183154A1 (en) 2011-07-28

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