EP0287746B1 - Procédé pour la fabrication d'une surface en relief décorative, avec un hologramme ou un motif de diffraction - Google Patents

Procédé pour la fabrication d'une surface en relief décorative, avec un hologramme ou un motif de diffraction Download PDF

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Publication number
EP0287746B1
EP0287746B1 EP19870810255 EP87810255A EP0287746B1 EP 0287746 B1 EP0287746 B1 EP 0287746B1 EP 19870810255 EP19870810255 EP 19870810255 EP 87810255 A EP87810255 A EP 87810255A EP 0287746 B1 EP0287746 B1 EP 0287746B1
Authority
EP
European Patent Office
Prior art keywords
producing
surface structure
holographic
decorative
decorative surface
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
EP19870810255
Other languages
German (de)
English (en)
Other versions
EP0287746A1 (fr
Inventor
Erich Bloesch
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.)
W BLOSCH AG
Bloesch W AG
Original Assignee
W BLOSCH AG
Bloesch W AG
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 W BLOSCH AG, Bloesch W AG filed Critical W BLOSCH AG
Priority to EP19870810255 priority Critical patent/EP0287746B1/fr
Priority to DE8787810255T priority patent/DE3765776D1/de
Publication of EP0287746A1 publication Critical patent/EP0287746A1/fr
Application granted granted Critical
Publication of EP0287746B1 publication Critical patent/EP0287746B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0084—Pictures or inscriptions on the case or parts thereof, attaching complete pictures
    • 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
    • B44C3/04—Modelling plastic materials, e.g. clay
    • B44C3/042—Modelling plastic materials, e.g. clay producing a copy from an original structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/14—Iridescent effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F7/00—Designs imitating three-dimensional effects
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/10—Moulds; Masks; Masterforms

Definitions

  • the present invention relates to a method for producing a decorative surface structure, comprising the steps of forming a casting of the surface of a master model in a suitable polymeric material, applying a thin conducting layer to the surface of the casting, and then electroforming the polymeric casting to produce a metallic replica of the desired surface.
  • a method is known for example from the CH-A 601 500, wherein items such as a watch face can be produced by an electroforming process whereby a master model of the watch face is made - commonly in metal -, plastic copies of this master are produced by a process such as casting, and subsequent electroformed metal copies are made from the plastic intermediate.
  • This electroforming process allows considerable product enhancement because relief information (for example raised numerals) can be incorporated into the master model, and are thus also copied onto the subsequent elec- troform.
  • embossed hologram and a multiplicity of decorative diffraction foils use the presence of a micro-relief structure on a surface to create a surface enhancement which is based on optical diffraction and not on the properties of coloured inks, pigments etc.
  • embossed surfaces may be further enhanced by the application of a thin metal layer (for example vacuum coated aluminium).
  • From the US-A 4 867 264 is also known an electroforming process for duplicating the surface contour of a master form.
  • the EP-A 175 460 discloses a method of manufacturing a diffraction grating, utilizing specially adapted steps for it, wherein the master is also a grating.
  • a holographic or diffractive relief pattern is formed in a metal surface whereby this step may itself involve producing an electroformed copy of a holographic or diffractive relief pattern recorded using laser technology on a photosensitive surface.
  • this metal relief pattern are then incorporated into a master model of the finally required watch face.
  • this master model will also include non-holographic or non-diffractive areas and elements to provide macroscopic relief effects and surface texturing, and utilitarian features such as apertures for the date wheel and driving axles for the hands.
  • holographic or diffractive elements may be incorporated into different areas of the same watch face.
  • Castings in a polymer system are produced of the master model surface.
  • These castings are coated with a suitable electrically conducting layer, preferentially less than 100 nm, and then in a suitable holder, are electroformed to provide replicas of the original master model surface. It is convenient and economic to use copper as the electroforming metal.
  • the electroformed watch faces are then finished by applying a further decorative layer to the replica surface, for example of gold in a thin layer of less than 100 nm and various metal finishing operations such as stamping to the final size and machining the rear suface if necessary.
  • a further decorative layer for example of gold in a thin layer of less than 100 nm and various metal finishing operations such as stamping to the final size and machining the rear suface if necessary.
  • the resultant watch face being made of metal is inherently very stable and the final quality depends essentially upon the care and precision which was exercised in the origination of the initial master model. Only one master model is required for the production of large numbers of identical replicas.
  • the invention described here is not limited to watch faces, but includes metal surfaces where an enhancement is required.
  • the technology described here provides a security feature which can protect the surface of an object into which such a surface is intimately combined, against simulation by conventional printing or engraving methods.
  • the technology can be applied to costume jewelry to provide product enhancement, to medals and coin-like items where the inclusion of holographic or diffractive -surface elements can provide both enhancement and proof of authenticity, and to general metal objects which can be produced using an electroforming technique and which can be enhanced by the inclusion of holographic and diffractive effects.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Holo Graphy (AREA)

Claims (8)

1. Procédé pour la production d'une structure superficielle décorative, comprenant les étapes de former un moulage de la surface d'une maquette originale dans un matériau polymère approprié, d'appliquer une couche conductrice mince à la surface du moulage, et puis d'électroformer le moulage polymère pour produire une réplique métallique de la surface désirée, caractérisé en ce que ladite maquette originale est formée en combinant un dessin en relief macroscopique avec un ou plusieurs éléments portant un dessin en relief microscopique en forme de structures holographiques ou diffractives.
2. Procédé selon la revendication 1, dans lequel une couche mince additionnelle telle que de l'or est appliquée au produit fini pour rehausser l'effet décoratif.
3. Procédé pour la production d'une structure superficielle décorative selon la revendication 1, où l'application de la couche conductrice mince fournit l'effet décoratif, et le moulage avec sa couche conductrice fournit la structure superficielle décorative.
4. Procédé pour la production d'une structure superficielle décorative selon la revendication 3 en forme d'une face de montre.
5. Procédé pour la production d'une structure superficielle décorative selon la revendication 3 qui fournit la partie décorative d'une pièce de bijouterie.
6. Procédé pour la production d'une structure superficielle décorative selon la revendication 3 en forme d'un médaillon ou d'une pièce de monnaie.
7. Procédé pour la production d'une structure superficielle réalisée selon la revendication 1 ou 2, dans lequel les éléments holographiques ou diffractifs incorporés dans la surface comportent un motif de sécurité pour prévenir la simulation d'une surface similaire par impression conventionnelle ou par des méthodes de finition non-holographiques ou non-diffractives.
8. Procédé pour la production d'une structure superficielle décorative selon la revendication 1 ou 2, où les zones en relief macroscopique de la maquette originale métallique ont été formées par des opéra- fions d'usinage conventionnelles, et les éléments holographiques ou diffractifs eux-mêmes ont la forme d'une réplique électroformée d'une structure holographique ou diffractive microscopique en relief enregistrée optiquement en utilisant l'interférence entre les fronts d'onde cohérents sur un médium d'enregistrement photosensible approprié.
EP19870810255 1987-04-22 1987-04-22 Procédé pour la fabrication d'une surface en relief décorative, avec un hologramme ou un motif de diffraction Expired - Lifetime EP0287746B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19870810255 EP0287746B1 (fr) 1987-04-22 1987-04-22 Procédé pour la fabrication d'une surface en relief décorative, avec un hologramme ou un motif de diffraction
DE8787810255T DE3765776D1 (de) 1987-04-22 1987-04-22 Verfahren zur herstellung einer dekorativen oberflaechenstruktur mit einem hologramm oder einem beugungsmuster.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19870810255 EP0287746B1 (fr) 1987-04-22 1987-04-22 Procédé pour la fabrication d'une surface en relief décorative, avec un hologramme ou un motif de diffraction

Publications (2)

Publication Number Publication Date
EP0287746A1 EP0287746A1 (fr) 1988-10-26
EP0287746B1 true EP0287746B1 (fr) 1990-10-24

Family

ID=8198399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870810255 Expired - Lifetime EP0287746B1 (fr) 1987-04-22 1987-04-22 Procédé pour la fabrication d'une surface en relief décorative, avec un hologramme ou un motif de diffraction

Country Status (2)

Country Link
EP (1) EP0287746B1 (fr)
DE (1) DE3765776D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219747A (zh) * 2015-11-11 2017-09-29 尼瓦洛克斯-法尔股份有限公司 具有至少一个视错觉图案的金属基部件的制造方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0484974A1 (fr) * 1990-11-09 1992-05-13 Luis Remba Procédé pour la fabrication de gravures
AU638881B2 (en) * 1991-06-13 1993-07-08 Farmer, Diana C. Simulated objects
DE4211235C2 (de) * 1992-04-03 2003-04-17 Gao Ges Automation Org Verfahren und Vorrichtung zur Herstellung metallischer Flächenelemente auf Substraten und deren Verwendung
DE4323554A1 (de) * 1993-07-14 1995-01-19 Reinert Udo Dipl Ing Verfahren zur Herstellung redundanter holografischer Informationsspeicher zur rotativen Rekonstruktion der Hologramme und deren Abbildung auf flächenhaften Bildsensoren
ES2159477B1 (es) * 1999-08-17 2002-04-16 Montana Exposito Vicenta De Procedimiento por el que un zapato infantil o deportivo se recubre de metal transformandose en objeto decorativo o trofeo.
CH697447B1 (de) * 2003-12-23 2008-10-15 3D Ag Verfahren zur Erzeugung eines Substrats mit unterschiedlichen optischen Eigenschaften.
EP3181007A1 (fr) * 2015-12-18 2017-06-21 The Swatch Group Research and Development Ltd. Element d'habillage en zircone a zones selectivement conductrices pour applications electroniques
EP3181006A1 (fr) 2015-12-18 2017-06-21 The Swatch Group Research and Development Ltd. Element d'habillage en zircone a coloration selective
EP3266905B1 (fr) 2016-07-04 2020-05-13 Richemont International S.A. Procédé de fabrication d'une pièce d'horlogerie
JP7051098B2 (ja) * 2018-07-20 2022-04-11 アサダメッシュ株式会社 装飾シート及びその製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH598970A4 (fr) * 1970-04-21 1974-05-31
US3867264A (en) * 1973-03-30 1975-02-18 Bell & Howell Co Electroforming process
CH601500A5 (en) * 1975-04-25 1978-07-14 Liss Sa Decorative metal parts and jewellery
US4184700A (en) * 1975-11-17 1980-01-22 Lgz Landis & Gyr Zug Ag Documents embossed with optical markings representing genuineness information
GB8420182D0 (en) * 1984-08-08 1984-09-12 Pa Consulting Services Diffraction gratings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219747A (zh) * 2015-11-11 2017-09-29 尼瓦洛克斯-法尔股份有限公司 具有至少一个视错觉图案的金属基部件的制造方法

Also Published As

Publication number Publication date
DE3765776D1 (de) 1990-11-29
EP0287746A1 (fr) 1988-10-26

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