EP2452231B1 - Verfahren zur Herstellung eines verzierten Reliefteils - Google Patents

Verfahren zur Herstellung eines verzierten Reliefteils Download PDF

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Publication number
EP2452231B1
EP2452231B1 EP10726115.8A EP10726115A EP2452231B1 EP 2452231 B1 EP2452231 B1 EP 2452231B1 EP 10726115 A EP10726115 A EP 10726115A EP 2452231 B1 EP2452231 B1 EP 2452231B1
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EP
European Patent Office
Prior art keywords
bosses
decorative layer
locally
hollows
adherence
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.)
Active
Application number
EP10726115.8A
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English (en)
French (fr)
Other versions
EP2452231A1 (de
Inventor
Juliette Muller
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP10726115.8A priority Critical patent/EP2452231B1/de
Publication of EP2452231A1 publication Critical patent/EP2452231A1/de
Application granted granted Critical
Publication of EP2452231B1 publication Critical patent/EP2452231B1/de
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • 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
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0048—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for dials

Definitions

  • the invention relates to a method of manufacturing a decorated relief piece and, more particularly, such a plastic piece whose decorations have a metallic appearance.
  • a timepiece dial usually has sconces to decorate it. These appliques may for example represent a time lapse to facilitate the determination of the time relative to the location of the needles of the timepiece. These sconces can also be used to simply bring an aesthetic effect to the dial.
  • these sconces are mounted on the dial by successive steps of gluing and possibly masking and / or buffering which, in addition to the price of the sconces, causes additional manufacturing costs due to the required positioning accuracy which is as much larger than the wall lamp is thick.
  • Such methods are described in the documents US 2,642,390 , JP 6000 4879 , and CH 344374 .
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by more generally proposing a method of manufacturing a decorated part which has fewer steps and consumes less material to make the decorations.
  • the Figures 1 and 2 represent a typical dial 11 for a timepiece.
  • the method 1 according to the invention is not limited to the manufacture of a dial but to any type of plastic part decorated in relief.
  • a timepiece dial is a good example of application of the method 1 according to the invention.
  • a dial 11 is typically a multi-level body 12.
  • the body 12 includes in particular a circular recess 19 capable of forming a secondary display of the timepiece.
  • the upper face of the body 12 comprises one hour lap in the form of indexes 13 regularly spaced.
  • the secondary display comprises a second series of indexes 15 which borders on said circular shape.
  • the upper face comprises a decoration 17 intended to mask the shoulder between said upper face and the recess 19.
  • the manufacturing method 1 makes it possible to provide a new type of manufacturing which is particularly suitable for plastic parts 21 whose reliefs are very pronounced, that is to say greater than 40 ⁇ m.
  • the manufacturing method 1 comprises a first step 3 for manufacturing the main body 22 of the future plastic part 21 (a dial 21 in the example below).
  • step 3 is performed by injecting said plastic into a mold (not shown). Indeed, this type of manufacture allows the precise roughing of the raised portions of the dial 21.
  • the plastic material for producing the body 22 may be, for example, thermoplastic resins such as styrene such as acrylonitrile-butadiene-styrene (ABS), acrylic resins such as polymethylmethacrylate (PMMA) and mixtures such as PMMA / ABS, polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyamides, polycarbonates (PC), ABS / PC mixtures, an ethylene-vinyl acetate copolymer ( EVA), polyimides or fluorinated resins such as polytetrafluoroethylene (PTFE).
  • thermoplastic resins such as styrene such as acrylonitrile-butadiene-styrene (ABS), acrylic resins such as polymethylmethacrylate (PMMA) and mixtures such as PMMA / ABS
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PC polycarbonates
  • step 5 of the method 1 the surface of the body 22 is structured to locally modify its surface state.
  • step 5 comprises two embodiments according to the adhesion characteristics of the plastic material used. Indeed according to the invention, the decorative layer will be applied directly to the body 22 of plastic.
  • step 5 is intended to locally increase the adhesion of the surface of the body 22 to the parts to be decorated, that is to say the elevations 24, 26 and 28.
  • the materials with very low adhesion are, for example, but not exclusively, polyolefins (PE ⁇ 70%, PP ⁇ 60%, etc.), saturated polyesters ( PET, PBT, etc.), polyamides (PA, etc.), fluorinated polymers (PTFE> 50%, etc.) or polyoxymethylenes (POM ⁇ 80%, etc.).
  • the structuring allowing the increase in adhesion comprises bosses 33 formed by making hollow 34 in the thickness of the piece to be decorated 11 which is not limited to a dial.
  • the height h 1 of the recesses 34 is small, that is to say between 2 and 10 ⁇ m and preferably about 5 ⁇ m
  • the width c 1 of the recesses 34 is between 5 and 20 ⁇ m and preferably about 10 ⁇ m
  • the width b 1 of the bosses 33 is between 5 and 20 ⁇ m and preferably about 10 ⁇ m. .mu.m.
  • the widths c 1 , b 1 respectively of the recesses 34 and the bosses 33 are substantially equal. This local structuring thus advantageously allows an increase in the selective adhesion of the surface to be coated during step 7.
  • step 5 is intended to reduce locally the adhesion of the surface of the body 22 at the level of the parts that are not to be decorated, that is to say all parts except the elevations 24, 26 and 28.
  • the materials with good adhesion are, for example, but not exclusively, polycarbonates (PC, etc.), styrenics (ABS, PS, etc.), polyacrylics ( PMMA, MABS, etc.), aromatic polysulfones (PSU, etc.), aromatic polyamides (PPA-semi-crystalline 25%, amorphous PPA, etc.) or polyaryletherketones (PEEK-semi-crystalline, etc.).
  • the structuring allowing the decrease in adhesion comprises bosses 35 formed by making recesses 36 in the thickness of the part to be decorated 11 which is not limited to a dial.
  • the height h 2 of the recesses 36 is large, that is to say between 50 and 200 ⁇ m and preferably about 100 ⁇ m
  • the width c 2 of the recesses 36 is between 5 and 20 ⁇ m. ⁇ m and preferably about 10 microns
  • the width b 2 of the bosses 35 is small, that is to say between 0.1 and 3 microns and preferably about 1 micron.
  • This local structuring allows advantageously a decrease in the selective adhesion of the surface to be coated during step 7.
  • Step 5 to selectively structure the surface condition of the body 22 may be destructively or non-destructively contemplated. Indeed, according to a non-destructive alternative, it can be envisaged that the surface condition is "manufactured" at the same time as the body 22 itself, adapting "in negative” the internal surface of the mold used during the step 3. It is then clear that steps 3 and 5 would then be performed at the same time.
  • step 5 for selectively structuring the surface state of the body 22 may also be performed in another alternative in a destructive manner, i.e., by removal of material.
  • the structuring of step 5 is performed by laser-type radiation which offers a very high precision for a modification of the surface state.
  • the body 22 may be demolded and then subjected to said radiation or, alternatively, the mold may comprise transparent parts to said radiation which allows to structure said body "in situ" that is to say without prior demolding.
  • step 7 for depositing on the entire body 22, a decorative layer 31 as illustrated in FIG. figure 6 .
  • step 7 is carried out by physical vapor deposition (PVD), however, other types of deposition may be envisaged, such as electroplating, chemical vapor deposition (CVD), atomic layer deposition (ALD) or even UV printing or lacquering.
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • ALD atomic layer deposition
  • UV printing or lacquering even UV printing or lacquering.
  • the last step 9 consists only of ridding the parts of the deposited layer 31 which have not adhered to the body 22 of the part 21.
  • the decorative layer 31 remains, that is to say, adhere, only at the level of the indexes 23, 25 and decor 27 under the effect of step 9.
  • the latter 9 can, for example, be performed by polishing, pressurized air jet or wet scrubbing.
  • the decorative layer 31 comprises at least one metal material which allows the dial 21 to provide an appearance that can be shiny at its raised portions 23, 25 and 27.
  • metal material which allows the dial 21 to provide an appearance that can be shiny at its raised portions 23, 25 and 27.
  • other types of materials can be envisioned as, for example, metal oxides and / or metal nitrides.
  • the decorative layer 31 is electrically conductive, according to a variant, following step 9, it can be envisaged to electroplate the decorations 23, 25, 27 to thicken each portion comprising said decoration.
  • the method 1 uses less material to form the decorative layer 31 than for the usual processes shown in FIGS. Figures 1 and 2 .
  • the problem of positioning parts 23, 25 and 27 is limited to the quality of implementation of step 3.
  • the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art.
  • the body 22 may be made from a material other than a plastic material such as, for example, a composite material or a ceramic.
  • Step 3 can also be carried out by a method other than the injection into a mold presented above, such as, for example, calendering, thermoforming, compression molding, stamping and / or stamping. on press.
  • the flat surfaces of the dial 21, such as in particular the secondary display 29, can also be selectively covered with the decorative layer 31 to give an additional aesthetic effect. It suffices to provide a suitable structuring in step 5 so that said coated portions of the flat surfaces of the dial 21 remain after step 9.
  • the shapes of the recesses 34, 36 and / or bosses 33, 35 are not limited to the examples of the Figures 10 and 12 but may be, for example, round, elliptical, rectangular or more generally polygonal.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (14)

  1. Verfahren für die Herstellung (1) eines Teils (21), das Reliefs aufweist, wobei die Reliefs (23, 25, 27) wenigstens teilweise mit einer Verzierungsschicht (31) überzogen sind, das die folgenden Schritte umfasst:
    a) Bilden (3) des Körpers (22) des Teils (21);
    c) Anordnen (7) der Verzierungsschicht direkt auf dem gesamten Körper (22);
    d) Entfernen (9) der Abschnitte der aufgebrachten Schicht (31), die nicht an dem Körper (22) des Teils haften,
    dadurch gekennzeichnet, dass das Verfahren außerdem zwischen den Schritten a) und c) den folgenden Schritt umfasst:
    b) selektives Modifizieren (5) des Zustands der Oberfläche des Körpers (22) des Teils (21), um die Hafteigenschaften in Bezug auf die Verzierungsschicht lokal zu ändern.
  2. Verfahren (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Schritt b) dazu bestimmt ist, die Haftung der Oberfläche des Körpers (22) lokal zu verringern, damit im Schritt c) die aufgebrachte Schicht (31) auf den modifizierten Abschnitten nicht haftet.
  3. Verfahren (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Verringerung der Haftung durch Bilden von mit Vertiefungen (36) abwechselnden Erhebungen (35) erhalten wird, wobei die Höhe (h2) und die Breite (c2) der Vertiefungen (36) im Bereich von 50 bis 200 µm bzw. von 5 bis 20 µm liegen und die Breite (b2) der Erhebungen (35) im Bereich von 0,1 bis 3 µm liegt.
  4. Verfahren (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Schritt b) dazu bestimmt ist, die Haftung der Oberfläche des Körpers (22) lokal zu erhöhen, damit im Schritt c) die aufgebrachte Schicht (31) auf den modifizierten Abschnitten haftet.
  5. Verfahren (1) nach Anspruch 4, dadurch gekennzeichnet, dass die Erhöhung der Haftung durch Bilden von mit Vertiefungen (34) abwechselnden Erhebungen (33) erhalten wird, wobei die Höhe (h1) und die Breite (c1) der Vertiefungen (34) im Bereich von 2 bis 10 µm bzw. im Bereich von 5 bis 20 µm liegen und die Breite (b1) der Erhebungen (33) im Bereich von 5 bis 20 µm liegt.
  6. Verfahren (1) nach Anspruch 5, dadurch gekennzeichnet, dass die Breiten (c1) der Vertiefungen (34) und (b1) der Erhebungen (33) im Wesentlichen gleich sind.
  7. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt a) durch Einspritzen von Material in eine Form ausgeführt wird.
  8. Verfahren (1) nach Anspruch 7, dadurch gekennzeichnet, dass die Schritte a) und b) gleichzeitig ausgeführt werden, indem der Zustand der inneren Oberfläche der Form lokal modifiziert wird.
  9. Verfahren (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Schritt b) durch lokales Modifizieren des Zustands der Oberfläche durch Bestrahlung des Lasertyps ausgeführt wird.
  10. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt c) durch eine physikalische Abscheidung aus der Dampfphase ausgeführt wird.
  11. Verfahren (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verzierungsschicht (31) wenigstens ein Metallmaterial enthält.
  12. Verfahren (1) nach Anspruch 11, dadurch gekennzeichnet, dass nach dem Schritt d) eine Galvanoplastik ausgeführt wird, um jeden Abschnitt (23, 25, 27), der die Verzierungsschicht enthält, zu verdicken.
  13. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Körper (22) des Teils (21) mit Hilfe eines Kunststoffs verwirklicht wird.
  14. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Reliefteil (21) ein Zeitmessgerät-Zifferblatt ist.
EP10726115.8A 2009-07-06 2010-06-25 Verfahren zur Herstellung eines verzierten Reliefteils Active EP2452231B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10726115.8A EP2452231B1 (de) 2009-07-06 2010-06-25 Verfahren zur Herstellung eines verzierten Reliefteils

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09164688A EP2273324A1 (de) 2009-07-06 2009-07-06 Verfahren zur Herstellung eines verzierten Reliefteils
EP10726115.8A EP2452231B1 (de) 2009-07-06 2010-06-25 Verfahren zur Herstellung eines verzierten Reliefteils
PCT/EP2010/059085 WO2011003756A1 (fr) 2009-07-06 2010-06-25 Procede de fabrication d'une piece en relief decoree

Publications (2)

Publication Number Publication Date
EP2452231A1 EP2452231A1 (de) 2012-05-16
EP2452231B1 true EP2452231B1 (de) 2013-04-17

Family

ID=41215208

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09164688A Withdrawn EP2273324A1 (de) 2009-07-06 2009-07-06 Verfahren zur Herstellung eines verzierten Reliefteils
EP10726115.8A Active EP2452231B1 (de) 2009-07-06 2010-06-25 Verfahren zur Herstellung eines verzierten Reliefteils

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09164688A Withdrawn EP2273324A1 (de) 2009-07-06 2009-07-06 Verfahren zur Herstellung eines verzierten Reliefteils

Country Status (6)

Country Link
US (1) US9050626B2 (de)
EP (2) EP2273324A1 (de)
JP (1) JP5584293B2 (de)
CN (1) CN102483607B (de)
HK (1) HK1171524A1 (de)
WO (1) WO2011003756A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014006229A1 (fr) * 2012-07-06 2014-01-09 Rolex Sa Procédé de traitement d'une surface d'un composant horloger et composant horloger obtenu par un tel procédé
US9886004B2 (en) * 2013-04-24 2018-02-06 Eta Sa Manufacturing Horlogere Suisse Method and device for assembling a movement to a watch case
JP6927268B2 (ja) * 2015-06-24 2021-08-25 カシオ計算機株式会社 装飾部材、文字板、および時計
US20200338809A1 (en) 2017-12-20 2020-10-29 Eta Sa Manufacture Horlogere Suisse Method for manufacturing a dial comprising at least one three-dimensional element
JP2018124282A (ja) * 2018-02-20 2018-08-09 カシオ計算機株式会社 装飾部材の製造方法、装飾部材及び時計
EP3547042A1 (de) * 2018-03-29 2019-10-02 ETA SA Manufacture Horlogère Suisse Herstellungsverfahren und -system mindestens eines uhrenelements zum anbringen auf einer uhrenkomponente einer uhr
EP3623877A1 (de) * 2018-09-17 2020-03-18 Rolex Sa Verfahren zur herstellung einer uhrenkomponente
CN112445119A (zh) * 2019-08-27 2021-03-05 广州市恒上钟表配件有限公司 一种手表表盘冲凸加工工艺

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642390A (en) * 1950-09-11 1953-06-16 Garofano Joseph Process of ornamentation of articles made of plastics
US3054175A (en) * 1957-01-18 1962-09-18 Fluckizer & Cie Process for the manufacture of dials having recessed markings or markings formed in relief
CH344374A (fr) * 1959-01-26 1960-01-31 Huguenin & Cie Procédé de fabrication d'un cadran à signes en relief dorés
CH1677973A4 (fr) * 1973-11-29 1976-12-15 Montavon Denis Procédé de fabrication d'un cadran de montre, cadran résultant de ce procédé
JPS604879A (ja) * 1983-06-23 1985-01-11 Seiko Instr & Electronics Ltd 腕時計用飾り板の製造方法
JPS63274754A (ja) * 1987-04-30 1988-11-11 Oki Electric Ind Co Ltd 薄膜の被着方法
JPH05164856A (ja) * 1991-12-12 1993-06-29 Seiko Epson Corp 時計用文字板及びその製造方法
EP0899053A3 (de) * 1997-08-29 2000-04-05 Sintokogio Ltd. Plattiertes Produkt und Verfahren und Vorrichtung zu dessen Herstellung
JP3584908B2 (ja) * 2000-10-18 2004-11-04 セイコーエプソン株式会社 装飾板、および、その製造方法、ならびに、この装飾板を利用する装飾品および時計
JP3825246B2 (ja) * 2000-11-24 2006-09-27 Ｎｅｃエレクトロニクス株式会社 化学的機械的研磨用スラリー
JP2005187316A (ja) * 2003-12-05 2005-07-14 Nippon Sheet Glass Co Ltd 選択付着性基板およびその製造方法
US7160583B2 (en) * 2004-12-03 2007-01-09 3M Innovative Properties Company Microfabrication using patterned topography and self-assembled monolayers
US8764996B2 (en) * 2006-10-18 2014-07-01 3M Innovative Properties Company Methods of patterning a material on polymeric substrates
JP2008150660A (ja) * 2006-12-15 2008-07-03 Seiko Epson Corp 装飾品の製造方法、装飾品および時計

Also Published As

Publication number Publication date
JP2012532328A (ja) 2012-12-13
JP5584293B2 (ja) 2014-09-03
EP2273324A1 (de) 2011-01-12
HK1171524A1 (en) 2013-03-28
EP2452231A1 (de) 2012-05-16
CN102483607A (zh) 2012-05-30
US9050626B2 (en) 2015-06-09
CN102483607B (zh) 2015-01-21
WO2011003756A1 (fr) 2011-01-13
US20120100305A1 (en) 2012-04-26

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