A method for plasma treating a target surface of a part, including: obtaining the target surface on the part; placing the part in a chamber of a plasma generator; evacuating the chamber to a pressure of between 10-6 and 10 mbar; injecting a suitable gas into the chamber until a pressure in the chamber of between 10-4 and 102 mbar is reached; generating an electric current discharge within the chamber, via an electric generator, in order to generate a plasma; exposing the target surface of the part to the plasma for a predefined period of time depending on the power of the electric current discharge, on the gas injected into the chamber and on the material of the target surface, so as to deteriorate the surface condition of the target surface in order to increase the roughness thereof to make the target surface mat or more mat.
B05D 7/26 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
B05D 5/02 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
B05D 3/14 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
B05D 3/06 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
A deposition method for forming a three-dimensional object on a watch dial and/or a watch bezel that includes at least supplying at least one support and depositing an adhesion layer, an outline of the object is delimited in order to enable a cavity to be formed by the deposition of a plurality of polymer layers, such that said object is formed by filling said cavity by the deposition of at least one finish layer.
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
C23C 14/16 - Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
A system for producing at least one three-dimensional element on a visible face of an external part element of a timepiece implementing this process, the system including a mould formed by the reversible assembly of a first part and a second part configured to receive a support plate of the external part element, the mould including at least one cavity formed by associating the first part including at least one impression with the visible face of the external part element, each cavity helping produce a blank of the three-dimensional element from an over-moulding by injecting injectable material onto the visible face, and a device for applying a coating onto the blank over-moulded on the visible face of the external part element helping finalise this blank of the three-dimensional element.
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
G04B 19/10 - Ornamental shape of the graduations or the surface of the dial; Attachment of graduations to the dial
A process for manufacturing a watch dial including at least one pattern on a visible face of the dial, the process including: a step of designing a support plate including a dial blank, this step including producing several through holes in the thickness of the body of a support plate, the holes delimiting in such a plate the edge of the dial blank, and a step of producing at least one pattern on a visible face of the dial blank during which step the following is performed: an arrangement of this support plate including the external part element in a mould, and a construction of a blank of each pattern on the visible face of the dial blank, as well as a finalisation of the blank of the pattern.
G04B 19/10 - Ornamental shape of the graduations or the surface of the dial; Attachment of graduations to the dial
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
A method for decorating a surface of a mechanical part including: taking the mechanical part to be decorated, on which a decoration element is sought to be produced; depositing on the surface a masking layer having a thickness that is at least equal to the thickness of the decoration element to be produced; making, in the masking layer, at least one cavity that coincides with the location on the surface to be decorated, the cavity having a contour that corresponds to the contour of the decoration element and defining a volume; depositing a bonding layer made of an electrically-conductive material on top of the masking layer and on the surface, in the locations of the cavity, to facilitate the bonding of the decoration element; filling the volume delimited by the masking layer and the surface with a filling material in which the decoration element; and removing the masking layer.
A method for fabricating an external element or a timepiece dial from non-conductive material, by performing or repeating a basic cycle of making a base from a non-conductive, or ceramic, or glass. or sapphire substrate; dry coating the base with a first sacrificial protective metal layer; etching a decoration with an ultrashort pulse laser to a depth at least equal to the local thickness of the first layer; dry coating the decoration and the remaining part of the first layer with a second metal and/or coloured decorative treatment layer; chemically removing each first layer; and before or after chemical removal of each first layer, mechanically levelling on the upper level of the base the compound thus formed.
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
C03C 17/34 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
C23F 1/00 - Etching metallic material by chemical means
C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
C03C 17/36 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
The invention relates to an enamelled part (3, 11, 21) for a dial comprising a ceramic substrate (31) coated with a first enamel layer (4′, 12, 24, 33) to improve the appearance of said part. According to the invention, the part includes at least one other enamel layer (6′, 8′, 9, 14, 16, 25, 35, 37, 39, 41, 43, 45) partially covering the first enamel layer (4′, 12, 24, 33) so as to form a decoration with a similar improved appearance.
The invention concerns the field of timepieces, jewellery and gems.
B32B 3/00 - Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
patents