EP0923457B1 - Objet metallique pourvu de zones contrastant en apparence - Google Patents
Objet metallique pourvu de zones contrastant en apparence Download PDFInfo
- Publication number
- EP0923457B1 EP0923457B1 EP97944864A EP97944864A EP0923457B1 EP 0923457 B1 EP0923457 B1 EP 0923457B1 EP 97944864 A EP97944864 A EP 97944864A EP 97944864 A EP97944864 A EP 97944864A EP 0923457 B1 EP0923457 B1 EP 0923457B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- substrate
- metallic substrate
- coloured layer
- laser beam
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/005—Removing selectively parts of at least the upper layer of a multi-layer article
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/12—Cans, casks, barrels, or drums
-
- 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
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/20—External fittings
- B65D25/205—Means for the attachment of labels, cards, coupons or the like
Definitions
- the present invention relates to metallic substrates having visually contrasting surfaces which are suitable e.g. for the production of containers such as beverage cans and the like or are such containers.
- US-Patent 4.547,649 describes a marking system on zirconium or other metals which are able to dissolve oxygen.
- the method includes producing a thin oxide layer on the surface of the metal and locally reducing a portion of the oxide layer using e.g. a laser beam, thereby leaving a mark of contrasting colour.
- this method is restricted to surfaces of specific metals. Moreover, the surface of the mark is uncovered and thus is not protected against environmental influences.
- This object is achieved by coating the metallic substrate with only one single coloured layer and partially, i.e. in the desired areas, removing (evaporating) this layer incompletely by laser irradiation.
- removing (evaporating) this layer incompletely by laser irradiation.
- a thin transparent "skin" or film remains which is substantially thinner than the lacquer layer. Since this skin is surprisingly translucent, the colour of the metallic substrate becomes visible, so that visual contrasts appear.
- FIG. 1 schematically illustrates the process according to the invention and the resulting product:
- a metallic substrate 1 is fully coated with a coloured layer 2 prior to laser ablation (A).
- A Having evaporated the coloured layer, a remaining transparent layer 3 which is substantially thinner than the original coloured layer is shown in B in the areas 4 where the laser beam stroke.
- fig. 2 illustrates the known process mentioned in the introductory part, in which, under the (first) coloured layer 2', the metallic substrate 1' comprises a second, differently coloured layer 5' which is directly applied onto the substrate (A'). It follows from B' that the striking of the laser beam results in the full evaporation of the first coloured layer in the affected areas 4' whereas the majority of the second layer 5' is maintained, so that the colour of the second layer 5' becomes visible for a viewer in the areas 4'.
- the thickness of the coloured layer can be chosen freely and is determined by common considerations (scratch resistance, price, etc.). While in prior known processes the thickness of the lower coloured layer was usually 3 - 4 ⁇ m and the layer on top thereof was thinner (e.g. about 0.5 to 2 ⁇ m), the thickness of the only and coloured layer of the invention may for example be the same or less (e.g. about 2 to 4 ⁇ m, preferable less than 3 ⁇ m) compared to what was usual in known processes. Due to the laser ablation, a considerably thinner layer (e.g. having a thickness of only 1/6 to 1/3) remains, e.g. when a layer having a thickness of 3 ⁇ m is processed by the laser ablation, this may yield a transparent layer having a thickness of about 0.6 ⁇ m.
- laser ablation may be carried out according to conventional methods.
- the laser ablation is effected by applying a mask or stencil which covers, or vice versa exposes, letters, words, logos, figures or the like or by a printing method, e.g. printing in a dot-matrix form.
- the energy to be actually generated can easily be calculated by a person skilled in the art and depends on the layer thickness. Of course, higher energy will lead to greater ablation.
- the energy to be generated is markedly lower than the one used in the prior art when the layers have equal thickness. Therefore, it suffices to use an NO laser for carrying out the process according to the invention.
- the adjustment is made such that the greater part (see above) of the coloured layer is removed from the exposed areas and the remaining skin becomes transparent in these areas, so that the metallic substrate appears as the second colour so that it appears as if it were a two-colour print.
- the single coloured layer may be a common lacquer, e.g. an epoxy resin-type lacquer.
- a common lacquer e.g. an epoxy resin-type lacquer.
- dark colours being especially suitable due to the better contrast with the metallic translucent substrate (e.g. aluminum, steel).
- the remaining thinner and colourless layer acts as a protective layer protecting the metal from atmospheric influences and/or as a contact barrier vis-à-vis any other substances which could attack the metal, and thus also as a protection against corrosion.
- New coated metal sheets can be produced in a simple way by means of the process according to the invention. These sheets are anti-corrosive as well as have an attractive graphic form.
- the process is also suited for the production of metal containers such as cans which are either "painted" according to the invention after shaping or produced from metal sheets treated according to the invention.
- specific areas of the containers or cans may be treated according to the invention, e.g. the bottom and/or the tab.
- the back side of the tab may be provided with a very small mark which serves for the manufacturer or insiders as an identification or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Wrappers (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Chemically Coating (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Physical Vapour Deposition (AREA)
Claims (11)
- Procédé de fabrication de structures à contraste visuel sur un substrat métallique (1), dans lequel le substrat qui est revêtu d'une couche colorée unique (2) est partiellement soumis à un faisceau laser, caractérisé en ce que l'énergie du faisceau laser est choisie de manière qu'un restant transparent (3) de la couche soit maintenu sur la zone traitée.
- Procédé selon la revendication 1, dans lequel la couche colorée comprend un vernis de type résine époxy.
- Procédé selon la revendication 1 ou 2, dans lequel les zones du substrat revêtu qui ne sont pas soumises au faisceau laser sont recouvertes d'un masque.
- Procédé selon la revendication 1 ou 2, dans lequel l'ablation du faisceau laser est réalisée par impression sous une forme à matrice de points.
- Substrat métallique (1) qui est pourvu de structures à contraste visuel, l'une des structures étant formée d'une couche colorée unique (2) présente sur une partie du substrat, caractérisé en ce que, sur la partie restante (4) du substrat, il y a en lieu et place de cette couche une couche transparente unique (3) qui est sensiblement plus mince que la couche colorée unique (2).
- Substrat métallique selon la revendication 5, caractérisé en ce que la couche colorée unique est un vernis de type résine époxy.
- Substrat métallique selon la revendication 5 ou 6, caractérisé en ce que la couche transparente qui est sensiblement plus mince que la couche colorée est préparée en exposant la couche colorée unique à la lumière d'un faisceau laser.
- Récipient au moins partiellement constitué d'un substrat métallique selon l'une quelconque des revendications 5 à 7.
- Boíte de boisson constituée au moins partiellement d'un substrat métallique selon l'une quelconque des revendications 5 à 7.
- Boíte de boisson comprenant une patte qui est constituée au moins partiellement d'un substrat métallique selon l'une quelconque des revendications 5 à 7.
- Boíte de boisson selon la revendication 10, caractérisée en ce que la couche colorée unique est présente sur au moins le verso de la patte et en ce que la couche transparente unique n'est présente que sur le verso de la patte.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19636763 | 1996-09-10 | ||
DE19636763 | 1996-09-10 | ||
DE19701547A DE19701547A1 (de) | 1996-09-10 | 1997-01-17 | Mit kontrastierenden visuellen Strukturen versehener metallischer Untergrund |
DE19701547 | 1997-01-17 | ||
PCT/EP1997/004937 WO1998010945A1 (fr) | 1996-09-10 | 1997-09-09 | Objet metallique pourvu de zones contrastant en apparence |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0923457A1 EP0923457A1 (fr) | 1999-06-23 |
EP0923457B1 true EP0923457B1 (fr) | 2001-07-18 |
Family
ID=26029223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97944864A Expired - Lifetime EP0923457B1 (fr) | 1996-09-10 | 1997-09-09 | Objet metallique pourvu de zones contrastant en apparence |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0923457B1 (fr) |
KR (1) | KR100488321B1 (fr) |
CN (1) | CN1230149A (fr) |
AT (1) | ATE203214T1 (fr) |
CZ (1) | CZ294792B6 (fr) |
DE (1) | DE29716186U1 (fr) |
DK (1) | DK0923457T3 (fr) |
ES (1) | ES2161476T3 (fr) |
PL (1) | PL185452B1 (fr) |
SK (1) | SK284674B6 (fr) |
TR (1) | TR199900518T2 (fr) |
WO (1) | WO1998010945A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8146768B2 (en) | 2009-02-04 | 2012-04-03 | Rexam Beverage Can Company | Tab with emboss and deboss beads |
US8844747B2 (en) | 2010-03-19 | 2014-09-30 | Rexam Beverage Can Company | And temperature indicating can ends and tabs |
US9186924B2 (en) | 2012-04-17 | 2015-11-17 | Rexam Beverage Can Company | Decorated beverage can tabs |
WO2018138232A3 (fr) * | 2017-01-25 | 2018-10-04 | Anheuser-Busch Inbev Sa/Nv | Procédé d'impression pour un récipient de boisson |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW473429B (en) * | 1998-07-22 | 2002-01-21 | Novartis Ag | Method for marking a laminated film material |
EP1225057A1 (fr) * | 2001-01-22 | 2002-07-24 | Novartis AG | Méthode pour le marquage d'une feuille d'un matériau laminé |
US20130075401A1 (en) | 2011-09-23 | 2013-03-28 | Rexam Beverage Can Company | Stay-on tab for a beverage container |
CN109849459A (zh) * | 2019-01-29 | 2019-06-07 | 大连盛维包装有限公司 | 一种带有金属层的复合材料及其制备方法和光泽加工方法 |
CN112207446A (zh) * | 2020-10-13 | 2021-01-12 | 萍乡安源包装有限公司 | 一种漆器激光雕刻工艺及其应用 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE421880B (sv) * | 1981-06-17 | 1982-02-08 | Wladimir Wladimiroff | Emne for gravering med laserstrale |
US4547649A (en) * | 1983-03-04 | 1985-10-15 | The Babcock & Wilcox Company | Method for superficial marking of zirconium and certain other metals |
JPS631483A (ja) * | 1986-06-19 | 1988-01-06 | Mitsubishi Electric Corp | 金属化粧板の着色方法 |
FR2649628B3 (fr) * | 1989-07-12 | 1991-07-05 | Duvicq Ets Charles | Procede de marquage de pieces en aluminium par projection d'un rayon laser |
GB9023243D0 (en) * | 1990-10-25 | 1990-12-05 | Cmb Foodcan Plc | Containers |
-
1997
- 1997-09-09 CZ CZ1999811A patent/CZ294792B6/cs not_active IP Right Cessation
- 1997-09-09 PL PL97331938A patent/PL185452B1/pl not_active IP Right Cessation
- 1997-09-09 DE DE29716186U patent/DE29716186U1/de not_active Expired - Lifetime
- 1997-09-09 TR TR1999/00518T patent/TR199900518T2/xx unknown
- 1997-09-09 ES ES97944864T patent/ES2161476T3/es not_active Expired - Lifetime
- 1997-09-09 DK DK97944864T patent/DK0923457T3/da active
- 1997-09-09 EP EP97944864A patent/EP0923457B1/fr not_active Expired - Lifetime
- 1997-09-09 CN CN97197747A patent/CN1230149A/zh active Pending
- 1997-09-09 AT AT97944864T patent/ATE203214T1/de not_active IP Right Cessation
- 1997-09-09 WO PCT/EP1997/004937 patent/WO1998010945A1/fr active IP Right Grant
- 1997-09-09 KR KR10-1999-7001992A patent/KR100488321B1/ko not_active IP Right Cessation
- 1997-09-09 SK SK315-99A patent/SK284674B6/sk unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8146768B2 (en) | 2009-02-04 | 2012-04-03 | Rexam Beverage Can Company | Tab with emboss and deboss beads |
US8844747B2 (en) | 2010-03-19 | 2014-09-30 | Rexam Beverage Can Company | And temperature indicating can ends and tabs |
US9186924B2 (en) | 2012-04-17 | 2015-11-17 | Rexam Beverage Can Company | Decorated beverage can tabs |
US10118729B2 (en) | 2012-04-17 | 2018-11-06 | Rexam Beverage Can Company | Decorated beverage can tabs |
WO2018138232A3 (fr) * | 2017-01-25 | 2018-10-04 | Anheuser-Busch Inbev Sa/Nv | Procédé d'impression pour un récipient de boisson |
Also Published As
Publication number | Publication date |
---|---|
CZ81199A3 (cs) | 1999-10-13 |
ES2161476T3 (es) | 2001-12-01 |
CZ294792B6 (cs) | 2005-03-16 |
PL331938A1 (en) | 1999-08-16 |
TR199900518T2 (xx) | 1999-07-21 |
ATE203214T1 (de) | 2001-08-15 |
SK31599A3 (en) | 1999-10-08 |
EP0923457A1 (fr) | 1999-06-23 |
DK0923457T3 (da) | 2001-11-05 |
CN1230149A (zh) | 1999-09-29 |
SK284674B6 (sk) | 2005-09-08 |
PL185452B1 (pl) | 2003-05-30 |
WO1998010945A1 (fr) | 1998-03-19 |
DE29716186U1 (de) | 1997-11-06 |
KR100488321B1 (ko) | 2005-07-12 |
KR20000036018A (ko) | 2000-06-26 |
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