Black component decorated by stones and method for manufacturing the same

Abstract

To provide a method for manufacturing a component for a watch or jewellery, which is coated in black, decorated by stones, and especially set with stones.SOLUTION: A component for an internal part or a movement of a timer or jewellery is provided. The component includes a substrate 2 partially coated with a black layer 3, and is decorated with at least one stone 4. The black layer includes a carbon nanotube or aluminum oxide. The substrate is not provided with the black layer in at least portions facing the stones. A method for manufacturing the component for a timer or jewellery is also provided.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to components intended for internal parts or movements of timepieces or jewellery. The invention further relates to a method for manufacturing said component. [Background technology]

[0002] The "color" of black is determined by the inherent color of the mass of material or by the addition of a pigment or dye to the material. The black color can be obtained only on the surface of the Color can be achieved by a number of methods, typically by oxidation / sulfurization / carbonization of the metal substrate. This is achieved by oxidation or by depositing oxides / sulfides / carbides on the substrate. Thus, carbon is a well-known element for darkening surfaces. A completely absorbing blackbody-like material with an optical absorption coefficient of 99.96% in the visible and near infrared ranges. This black material can be obtained by forming it into elongated shapes in the form of nanotubes. is so perfect that it can obscure the three-dimensional shape of an object when viewed from the front.

[0003] The use of black coatings in the timekeeping industry is well known. P3327517 is a watch whose first substrate, which faces the crystal of the watch, is a black nanotube layer. The face is covered with a second substrate on the opposite side of the crystal, which is fixed to the first substrate. The first substrate has a window intended to form an index. The second substrate has a light-emitting property at least in an area facing the opening. A coating is included, whereby in the first substrate, between the black layer and the illuminated index. Creates contrast in the image.

[0004] In this way, contrast can be achieved by overlapping two substrates with different coatings. Thanks to this superposition, both coatings can be selectively deposited on the same surface. This allows for the deposition of nanotubes without the need for excessive manipulation of the particularly fragile nanotube layers. Nevertheless, this overlap requires the production of two substrates. This increases the manufacturing costs.

[0005] Swiss patent CH711141 states that the decoration, i.e. the index, is made of carbon black. The present invention discloses a method for manufacturing a dial that is to be attached to a cladding. These are produced separately and then simply added to the dial. This reduces the time required for dial production. However, this manufacturing technique means that the black color underneath the decoration affects the aesthetics and / or appearance of the decoration. is not suitable for certain types of decorations which may adversely affect the shine.

[0006] In particular, this manufacturing technique is not well suited to decorations made of stones, especially diamonds. It is difficult to set stones on a dial covered with a black layer. The glazing completely surrounds the stone, creating the desired contrast, but is not interrupted at the stone's location. The manufacturing process requires careful consideration of the material, otherwise the brilliance of the stone will be diminished. Special care must be taken not to damage the carbon nanotube layer. The tube layer is so brittle that it is nearly impossible to touch without damaging the surface. Damaging the surface creates a contrast to the original color of the carbon nanotubes. This results in shiny little spots or holes that can cause the surface to look dull. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention relates to a black coated, stone decorated, and especially stone set, The present invention aims to provide a method for manufacturing a component for a timepiece or a piece of jewelry. The method was developed so that the black layer was interrupted at the location of the stone, but the black coating was not damaged. Ta. [Means for solving the problem]

[0008] Therefore, the manufacturing method according to the present invention does not merely cover, decorate, In the case of the present invention, the decoration formed by the stone does not involve adding a stone. The decoration is made directly on the substrate from which the black layer has been selectively removed, thereby leaving a black layer underneath the decoration. Maintain a surface free of color layers.

[0009] In particular, the present invention relates to an internal component or movement of a timepiece or piece of jewelry. The method for producing a component contemplated comprises at least one The black layer comprises a substrate partially coated with a black layer, the black layer being made of carbon nanotubes or aluminum oxide. The substrate, which includes an aluminum coating, is provided with a bed of aluminum. The bed is decorated with at least one stone, and the substrate has at least one stone on the surface of the bed. and the black layer is absent, the method comprising the step a) of providing the substrate, followed by: In any order, step b) depositing the black layer on the substrate; c) forming a bed; and c) placing and fixing the stones within the bed. and step e), the method further comprising: Thus, a step d) is carried out of selectively removing the black layer already deposited on the substrate.

[0010] In another embodiment of the method applicable when the black layer comprises carbon nanotubes, Step b) is followed by step b') of depositing a precursor layer comprising carbon nanotubes. Therefore, the additional step d) is at least in advance of the bed surface. The precursor layer is replaced by an additional step d') of selectively removing the precursor layer so that the precursor layer is free of the precursor layer. The method further comprises removing the precursor layer to expose the black carbon nanotube layer. and performing a step f) of chemically or laser etching on said substrate.

[0011] The selective removal step d) or d') may be carried out mechanically, for example by using a setting tool. Alternatively, selective laser ablation may be used. The removal may occur during a step of forming a bed or during an additive manufacturing operation, particularly an inkjet additive manufacturing operation. Indirectly during the step of growing a stone support on a substrate, such as by using a method such as the steps of: It is also possible.

[0012] The present invention further relates to an internal part or movement of a timepiece or a component of a piece of jewelry. The component includes a substrate partially covered with a black layer, and at least one The stone is placed on the substrate or on a bed located on the substrate, The black layer includes carbon nanotubes or aluminum oxide, and the substrate includes at least In both cases, the black layer is absent on the portion facing the stone, i.e., the surface of the bed.

[0013] In the case of diamond decoration on a carbon nanotube coating, the present invention provides two diamonds on the surface. A component of a timepiece or jewellery containing two allotropes of carbon, one of which is It is very black thanks to carbon nanotubes, while the other allotrope is black because of diamond. It is possible to produce a product that is very white and has a very striking contrast and shines. This proposes the following.

[0014] Further features and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings, in which: can be understood. [Brief description of the drawings]

[0015] [Figure 1] 1 shows a top view of a timepiece with a face coated and decorated with stones according to the method of the invention, in an enlarged view showing the stones together with the setting elements. [Diagram 2] FIG. 1 is a schematic diagram of an embodiment of a method according to the invention carrying out several sequential steps. [Diagram 3] FIG. 1 is a schematic diagram of an embodiment of a method according to the invention carrying out several sequential steps. [Figure 4] FIG. 1 is a schematic diagram of an embodiment of a method according to the invention carrying out several sequential steps. [Diagram 5] FIG. 1 is a schematic diagram of an embodiment of a method according to the invention carrying out several sequential steps. [Figure 6] FIG. 1 is a schematic diagram of an embodiment of a method according to the invention carrying out several sequential steps. [Figure 7] FIG. 1 is a schematic diagram of an embodiment of a method according to the invention carrying out several sequential steps. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The present invention relates to components intended for internal parts or movements of timepieces or jewellery. This component refers to the dial, hands, indexes, appliques, vibrations, etc. The weight, plate and bridge can be selected from the group consisting of the above. According to the present invention, this component includes at least The present invention further relates to a method for manufacturing a semiconductor device comprising the steps of: The present invention relates to an assembly comprising two of said components.

[0017] Hereinafter, as shown in FIG. 1, a portable electronic device formed by a substrate 2 coated with a black layer 3 will be described. The present invention will be described in relation to the case where the present invention is applied to the dial 1 of a watch. The substrate may be steel, titanium, aluminum, titanium or aluminum alloys, brass or other copper alloys. The substrate can be made of a metal material such as ceramics, ... The substrate 2 may be made of metal, sapphire, composite material or polymer material. One or more stones 4 are arranged in a manner distributed within the black layer 3, and are decorated, preferably set. These stones4 are precious stones such as diamonds, semi-precious stones, or zirconia. According to the present invention, at least one synthetic stone such as a stone is provided on the substrate. In the opposing area, there is no black layer. The black layer is flush with the stone table. The substrate may also be decorated to form an alignment of multiple stones. The substrate includes a black layer between these alignments.

[0018] The substrate 2 has a bed 5, shown in FIG. 2, which is made up of stones 4, in particular The pavilion 4a serves as a seat for the stone 4, which is preferably The seat is fixed within the seat by means of a setting element 6. The setting element 6 is a setting claw arranged within the range of the bed, a component of the base material The grains that form the minute particles, or the baguettes and the a in the bed for invisible setting According to the present invention, the settings can be displayed to the user. To prevent this, the setting element is preferably covered with a black layer. Visually, the lacing blends in with the black background of the dial and is subdued. The light can be attached to the stone within the setting with an adhesive that does not deteriorate the shine of the stone. This does not prevent such things from happening.

[0019] In another embodiment of the present invention, the black layer comprises carbon nanotubes. The nanotube layer contains at least 1% by weight of carbon nanotubes, preferably at least The carbon nanotube layer contains at least 10% by weight of carbon nanotubes. The varnish may contain at least 1% by weight, preferably at least 10% by weight. The higher the concentration, the darker the dark areas. Carbon nanotubes are run within this varnish. The varnish can be applied by spraying, etc. The carbon nanotube layer is made of carbon nanotubes aligned perpendicular to the plane of the substrate. At least 50% by weight, at least 60% by weight, at least 70% by weight, Preferably, the carbon-containing polymer comprises at least 80% by weight, or at least 90% by weight, with the remainder comprising other forms of carbon. Preferably, the carbon nanotube layer is made of carbon nanotubes aligned perpendicular to the plane of the substrate. The nanotubes are 100% by weight. The vertical alignment of the nanotubes is This produces a deeper black color than when the carbon nanotubes are randomly oriented, but The problem is that the mechanical strength is lower than that of varnish. A protective layer can be deposited on the surface, but this reduces the optical absorption coefficient. , varnish, or Al 2 O 3 , TiO 2 or SiO 2 Thin layers of materials such as The material is a laminate of one or more of these materials deposited by layer deposition. Vertically aligned nanotubes can be grown by PVD (physical vapor deposition) and CVD (chemical vapor deposition). ), or by vacuum methods such as laser ablation synthesis. The tube layer has a thickness of 1 to 100 μm.

[0020] In another alternative embodiment, the black layer comprises Al 2 O 3 Aluminum oxide such as Al x O y and further including non-ferrous metal oxides such as oxides of copper, zinc or manganese. This layer is Al x O y The content is at least 90%, preferably 100%. The aluminum content of the aluminum oxide is 45 to 65% by weight, preferably 45 to 50% by weight. This layer has a thickness of 1 to 50 μm, preferably 2 to 10 μm, and more preferably 4 to 50 μm. This layer is deposited by PVD, CVD or PECVD (plasma enhanced chemical vapor deposition). It can be deposited by evaporation.

[0021] The components according to the invention are shown in several implementations of the method in the schematic diagrams of Figs. For the sake of clarity, FIGS. 2 to 7 show a schematic diagram of a stone seat. Only the substrate on which the bed is placed is shown, not the setting elements. Any steps involved may involve mechanical preparation of setting elements such as particles, if necessary. This can involve:

[0022] The method for manufacturing the component includes steps b) through e). Distinct, a) a step of providing a substrate 2; step b) of depositing a black layer 3 on the substrate 2, or using carbon nanotubes In an alternative embodiment, the precursor layer 7 containing carbon nanotubes is b') depositing the resulting mixture on a substrate; - a step c) of forming a bed 5 in or on the substrate 2, - selectively removing the black layer 3 so that at least the surface of the bed 5 is free of the black layer 3 or the precursor layer 7; d) selectively removing the precursor layer 7 already deposited on the substrate 2; Step d') and - placing and fixing, preferably setting, the stones 4 within the bed 5, step e ) and

[0023] In the first embodiment shown in Figs. 2 to 5, the method for producing this component is , a) a step of preparing a substrate 2 (FIGS. 2 to 5); - The bed, bed 5 (Fig. 3), or the upper surface of stone 4, i.e. the table and crown of the ashlar. (FIGS. 4-5), all or part of the substrate 2, including the area intended to form (FIG. 2). b) depositing a black layer 3 on the - To form bed 5 (Fig. 2), bed 5 (Fig. 3), or the top surface of stone 4 (Figs. 4-5) and d) selectively removing the black layer 3 from the areas intended for it.

[0024] The method further comprises the step c) of forming a bed 5 on the substrate 2 and and step e) of placing and fixing the stone 4. This fixing is called setting and bonding. This includes other fixation techniques such as

[0025] In an alternative embodiment shown in FIG. 2, a black layer 3 is applied to the substrate prior to forming the bed 5. 2. The black layer 3 is then removed during the formation of the bed 5. Steps c) and d) are one and the same step. Finally, step e) is performed.

[0026] In an alternative embodiment shown in FIG. 3, after step c) of forming the bed 5, The black layer 3 is deposited on the substrate 2. The black layer 3 is then removed from the bed 5. can be performed mechanically, in particular manually using a setting tool In a preferred embodiment, this selective removal is achieved by laser ablation, preferably Preferably, this is done using a pulsed laser, such as a nanosecond, picosecond or femtosecond laser. Finally, perform step e).

[0027] In an alternative embodiment shown in FIG. 4, the black layer 3 is applied to a substrate 2 already decorated with stones 4. The black layer 3 on the stone 4 may then be removed mechanically, but preferably by , which is then removed by laser ablation using a pulsed laser as in the previous case. This alternative embodiment of FIG. 4 is preferred because after the black layer has been selectively removed, In an alternative embodiment of FIG. 3, the substrate must be set after the selective removal step. This is because, unlike the shape, there is no need to process the surface.

[0028] In an alternative embodiment shown in FIG. 5, the substrate 2 is decorated with stones 4 according to step e). The method then further comprises the additional step f) of applying a mask 8 to the stone 4. The mask 8 can be a lacquer, an adhesive, a photosensitive film, etc. , for example, photolithography, stereolithography, digital printing, or adhesives. In the case of a film, it can be deposited manually. Then, in step b), a black layer 3 is deposited on the substrate 2, including on the mask 8. Finally, in step d), the mask 8 is The black layer 3 is selectively removed in the areas where there is a mask by laser ablation. Alternatively, the flaps may be removed manually or mechanically, for example by using a special tool. (not shown), a mask can be placed within the confines of the bed prior to placing the stone. As in, before the stones are placed, a black layer is deposited and selectively removed.

[0029] In a second embodiment shown in FIG. 6, step b) is carried out on a substrate including on the surface of the bed 5. 2 is replaced by a step b') of depositing a precursor layer 7 on the substrate 2. A precursor layer is deposited and annealed to polymerize the precursor. The morphology is applied to the carbon nanotube-based black layer. The precursor is a polymer and a carbon nanotube. The proportion of carbon nanotubes is 0.1 to 15% by weight, and The proportion of polymers is 85 to 99.9% by weight. The polymers are polyamide, polybutene, polyamide ... Polyethylene, polyimide, polypropylene, polystyrene, polyvinyl acetate and polymeth Thermoplastics such as methyl acrylate, or thermoplastics such as polyepoxides and polyurethanes. The adhesive between the polymer and the carbon nanotubes can be selected from the curable materials. To improve the properties, the carbon nanotubes can be pre-functionalized. In the case of an imide matrix, the carbon nanotubes are ethylenediaminetetraacetate (EDTA)-based. In the polyimide matrix, the polymer can be pre-functionalized by etching. The precursor containing the mixture of distributed carbon nanotubes is deposited at 150-350 °C. Polymerization takes place at room temperature for 1 to 7 hours.

[0030] Then, a step d) of selectively removing the precursor layer 7 deposited in the bed 5 is performed. This selective removal is preferably accomplished by laser ablation, but may be accomplished by any suitable method. This can also be done manually using a tool. After this, stones 4 are placed within the bed 5 of the substrate 2. Finally, in step f), the precursor layer 7 is chemically bonded to the precursor layer 7. Chemical or laser etching is then performed to remove the carbon nanotubes in the precursor layer. The black layer 3 is formed by exposing the black layer 3. The chemical etching depends on the nature of the polymer matrix. Depending on the circumstances, an acidic medium (e.g., formic acid, acetic acid, sulfuric acid, nitric acid, hydrochloric acid or hydrofluoric acid) or a suitable This etching step can be carried out in a suitable solvent (e.g., m-cresol). The polymer matrix of the precursor layer is partially dissolved, roughening the surface and thus the carbon The nanotubes are rich in nanostructures that are well suited for trapping light. Laser etching using a laser (e.g., a femtosecond or picosecond laser) can also be used. It can be considered to create a surface microstructure such as

[0031] Alternatively (not shown), step b') may be carried out before step c) of forming the bed. Thus, steps c) and d') form a bed and extract the precursor from the bed. Alternatively (not shown), the precursor layer may be selectively removed in a single concomitant step. , depositing the stone on the substrate, thus selectively removing the precursor on the stone. This can be done.

[0032] In a third embodiment shown in FIG. 7, the method further comprises the steps of: Addition of a material grown on a substrate 2 to form a support 11 intended to receive a stone 4 Thus, the method includes the steps of: a) a step of providing a substrate 2; - a step b) of depositing a black layer 3 on the substrate 2; - simultaneously with step d) of selectively removing the black layer 3, h) growing a layer of the silicon dioxide to form a support 11; - placing and fixing the stones 4 within the bed 5 provided in the support 11 on the substrate 2; Step e) and step e) are carried out sequentially.

[0033] The material depositing step h) may be performed by digital printing, electroforming, selective laser melting, or any other suitable method. The material can be metallic, ceramic or polymeric. During this step, the black layer 3 is automatically removed from the support 11. The part of the substrate 2 facing the stone 4 to be set is thus selectively removed. There is no black layer 3.

[0034] The bed 5 can be created directly during the growth step h) or at a later stage. It can be formed before step e).

[0035] In all embodiments, the setting elements are designed to blend in unobtrusively with the dial background. However, the present invention provides a method for selectively removing the black layer from the bed. This does not exclude that removal also includes removal from setting elements.

[0036] Finally, the present invention further comprises a first component and a second component. Regarding the assembly, each of these components is an internal part of the timepiece or movement. According to the invention, the first and second The component includes at least one portion coated with a black layer. One component can move relative to the second component, and the second component The first component is attached to face one or more stone components. For example, the first component is a needle coated with a black layer, A hand decorated with a stone set or cemented to the tip of the hand and a second component. The main component is the dial, which is covered with a black layer. [Explanation of symbols]

[0037] 1 Front panel 2 Base material 3 Black layer 4 stones 4a Pavilion 5 Beds 6 Setting elements 7 Precursor Layer 8. Mask 11 Support

Claims

1. An internal part or movement of a timepiece or a component of a piece of jewelry, The component comprises a substrate (2) partially covered with a black layer (3) and decorated with at least one stone (4), The stones (4) are placed in a bed (5) provided on the substrate (2) or on a support (11) located on the substrate (2); The black layer (3) contains carbon nanotubes or aluminum oxide, The substrate (2) is free of the black layer (3) at least on the surface of the bed (5). A component characterized by:

2. The black layer (3) is flush with the stone table (4). The component of claim 1 .

3. The stones (4) are set within the bed (5) using setting elements (6). The component of claim 1 .

4. The setting element (6) is further coated with the black layer (3). The component of claim 3 .

5. The component includes an alignment of a plurality of stones (4); The black layer (3) is placed between the alignment layers. The component of claim 1 .

6. The black layer (3) is a varnish containing at least 1 wt. % or at least 10 wt. % of carbon nanotubes, The carbon nanotubes are randomly oriented within the varnish. The component of claim 1 .

7. the black layer (3) comprises at least 50% by weight, or at least 60% by weight, or at least 70% by weight, or at least 80% by weight, or at least 90% by weight of carbon nanotubes aligned perpendicular to the plane of the substrate (2); The remainder contains other forms of carbon The component of claim 1 .

8. The black layer (3) contains 100% by weight of carbon nanotubes aligned perpendicular to the plane of the substrate (2). The component of claim 1 .

9. The black layer (3) containing carbon nanotubes has a thickness of 1 to 100 μm. The component of claim 1 .

10. The black layer (3) contains at least 90% by weight, or 100% by weight, of aluminum oxide. The component of claim 1 .

11. The aluminum oxide has an aluminum content of 45 to 65% by weight, or 45 to 50% by weight. The component of claim 10 .

12. The black layer (3) has a thickness of 1 to 50 μm, or 2 to 10 μm, or 4 to 7 μm. The component of claim 10 .

13. A dial, an index, a hand, an apex, a vibration weight, a plate, and a bridge. The component of claim 1 .

14. A component according to claim 1; An assembly comprising an internal part or movement of a timepiece or another component of a piece of jewellery, The other component is at least partially covered with the black layer (3). Assembly characterized by:

15. The component is disposed opposite the other component and is mounted for movement relative to the other component.

15. The assembly of claim 14.

16. the component is a needle; The other component is the dial.

15. The assembly of claim 14.

17. Comprising a component according to claim 1 or an assembly according to claim 14. A timepiece or piece of jewellery characterised in that

18. 1. A method for manufacturing an internal component or movement of a timepiece or a component intended for a piece of jewellery, comprising the steps of: The component comprises a substrate (2) at least partially covered with a black layer (3) and decorated by at least one stone (4) arranged in a bed (5) provided on the substrate (2), The black layer (3) contains carbon nanotubes, The substrate (2) is free of the black layer (3) at least on the surface of the bed (5), The method comprises: Step a) of preparing the substrate (2) is carried out; Then, in no particular order: A step b') of depositing and annealing a precursor layer (7) comprising carbon nanotubes on said substrate (2); c) forming said bed (5) in said substrate (2); and step e) of placing and fixing the stones (4) within the bed (5) of the substrate (2), The method further comprises: an additional step d') of selectively removing said precursor layer (7) so that at least said face of said bed is free of precursor layer (7); and f) performing chemical or laser etching on the precursor layer (7) to form the black layer (3) on the substrate (2). A method comprising:

19. Step a) of providing the substrate (2); c) forming said bed (5) in said substrate (2); a step b') of depositing and annealing said precursor layer (7) comprising carbon nanotubes on said substrate (2), including on the surface of said bed (5); a step d') of selectively removing said precursor layer (7) deposited on the face of said bed (5); e) placing and fixing the stones (4) within the bed (5) of the substrate (2); and step f) of subjecting the precursor layer (7) to chemical or laser etching to form the black layer (3) on the substrate (2).

20. The method of claim 18 .

20. Step a) of providing the substrate (2); a step b') of depositing and annealing a precursor layer (7) on said substrate (2); c) forming said bed (5) on said substrate (2), thereby selectively removing said precursor layer (7) from said bed (5); e) placing and fixing the stones (4) within the bed (5) of the substrate (2); and step f) of subjecting the precursor layer (7) to chemical or laser etching to form the black layer (3) on the substrate (2).

20. The method of claim 18 .

21. Step a) of providing the substrate (2); c) forming said bed (5) in said substrate (2); e) placing and fixing the stones (4) within the bed (5) of the substrate (2); a step b') of depositing and annealing a precursor layer (7) on the substrate (2), including on the side free of said stones (4); a step d') of selectively removing the precursor layer (7) deposited on the face free of the stones (4); and step f) of subjecting the precursor layer (7) to chemical or laser etching to form the black layer (3) on the substrate (2).

20. The method of claim 18 .

22. The precursor layer (7) comprises a polymer and carbon nanotubes. Method according to any one of claims 18 to 21.

23. The proportion of carbon nanotubes is 0.1-15% by weight, and the proportion of polymer is 85-99.9% by weight.

23. The method of claim 22.

24. The polymer is selected from the group consisting of polyamide, polybutene, polyethylene, polyimide, polypropylene, polystyrene, polyvinyl acetate, polymethyl methacrylate, polyepoxide and polyurethane.

23. The method of claim 22.

25. The precursor layer (7) has a thickness of 10 to 200 μm, or 100 to 200 μm.

20. The method of claim 18 .

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