The Swatch Group Research and Development Ltd

Omega Sa

Nicolas Francois

Claire Rannoux

Stewes Bourban

Gregory Kissling

Cedric Nicolas

Agnes Marlot Doerr

Julien Dahan

Juliette Muller

Catherine Blanc Petiot

Dominique Lechot

Pierpasquale Tortora

Jean-Luc Bazin

Stephane Lauper

Olga Reinauer

Christophe Letondor

Yannick Celerier

Pablo Rodriguez

Maria Fernandez Ciurleo

Milan Calic

Benoît Lafin

Carole Govaerts

Julien Huser

Blaise Poinsot

Yannick Célérier

An in-line method for marking a substrate made of extruded synthetic material, the method including the steps of extruding the synthetic material through an extrusion die to form the substrate, marking the substrate by scrolling the substrate obtained from the extrusion die between two rotatably mounted and temperature-controlled rollers with an upper roller and a lower roller, one of the rollers having an impression forming the negative of a decoration or a texture to be marked on one face of the substrate, this same roller or the other of the rollers including at least one notch allowing to guide the substrate as it passes through the extrusion die and between the two rollers. An installation can include in line the extrusion die and the marking device.

Method for marking a decorative article

A horological component including a substrate and at least one first decoration component including at least one first photoluminescent material configured to procure a phosphorescent appearance. The horological component includes a second decoration component including at least one second material, the second material being metallic and configured to procure a metallic appearance, or variochromic and configured to procure a color that varies under the effect of a stimulus, the first decoration component and the second decoration component being arranged relative to one another on the substrate to form a decoration having a metallic appearance or a color that varies under the effect of a stimulus when the horological component is exposed to light and a phosphorescent appearance when the horological component is in the dark. A timepiece can include such a horological component.

Horological component

The invention relates to a timepiece component made of composite material including at least one reinforcement and one matrix, the reinforcement having a three-dimensional honeycomb structure with a plurality of cells into which the matrix is injected. The invention also concerns a method for manufacturing such a timepiece component.

Timepiece component made of composite material

A piece of jewellery made of a natural elastomer composite material, wherein the natural elastomer composite material includes a natural elastomer matrix wherein between 0% and 6% cellulose fibres, between 0 and 5% anti-odour agents, and between 0 and 30% silica are dispersed.

Piece of jewellery made of natural elastomer material

A decorative item including an element made at least partly of a metallic, polymeric or ceramic based material and including a face visible to an observer, at least one light source external or internal to the element, the decorative item further includes at least one optical fibre embedded in the material of the element, the optical fibre serving as a guide for the light from the light source in order to produce, during use, a light effect on the visible face of the element. A method for manufacturing the decorative item is also disclosed.

Decorative item with a light effect

A method for manufacturing an external component for watches or jewellery, especially a bracelet, includes the steps of: providing a substrate including a first face opposite to a second face and co-extrusion coating the first face and the second face of the substrate respectively with a first and a second band of synthetic material. The first band forms on the first face a transparent or translucent layer so that all or part of the substrate remains visible.

External component with decoration for watches or jewellery and method for manufacturing the same

A piece, in particular for jewellery or timepieces, is made of a material comprising a synthetic matrix loaded with particles of a precious or semi-precious stone. The particles have a particle size d90 between 50 &#x3bc;m and 2 mm, preferably between 100 &#x3bc;m and 1 mm, and more preferably between 150 &#x3bc;m and 500 &#x3bc;m.

Material for timepiece and jewellery

The invention relates to a capsule comprising a shell containing a transparent and thermally conducting liquid, particles having a thermochromic coating and particles having a photochromic coating, the thermochromic particles being bulkier than photochromic particles, the liquid being such that, within a first range of temperatures, its density is greater than the density of the thermochromic particles and than the density of the photochromic particles, and such that, within a second range of temperatures greater than those of the first range, the density of the photochromic particles is less than the density of the liquid, which is itself less than the density of the thermochromic particles.

Liquid capsule having thermochromic and photochromic properties

A method for making a bracelet provided with an electronic component insert, the method includes fabricating a basic, flexible support for an insert in the form of a band, making conductive paths on the flexible support or in the flexible support, disposing on the flexible support various electronic components connected to the conductive paths, and coating the electronic components disposed on the flexible support with a transparent or opaque protective layer to finish the insert of the bracelet.

Method for making a smart bracelet provided with an electronic component insert

A process for manufacturing a timepiece or jewellery component, the component being manufactured from a first material, the process including: obtaining the component, having undergone, at a very latest during the obtaining, a treatment directed toward combining the component with a chromic element, the chromic element including at least one pigment capable of reacting to an energy supply and a matrix for binding the pigment; placing the component in a machine capable of at least locally supplying energy to the component; using the energy supply machine in a predefined operating program at least locally to provide energy to the chromic element to bring about a reaction of its pigment; removing the component from the energy supply machine.

Process for the selective decoration of a timepiece component

External part for a timepiece or piece of jewellery, this external part being produced by means of a polymer matrix in which piezochromic molecules are dispersed that change from a first stable state to a second stable state while changing colour under the effect of applied pressure.

External part for a timepiece or piece of jewellery

A piece of jewellery made from elastomer composite material, wherein the elastomer composite material includes a matrix made of elastomer in which between 0.5% and 4% by mass of cellulose fibres, between 0 and 2% by mass of an antibacterial additive, between 0 and 5% by mass of thermally conductive fillers, between 0 and 1% by mass of anti-odour agents, and between 0 and 1% by mass of silica are dispersed.

Piece of jewellery made of composite elastomer material

A method for manufacturing a bracelet made of synthetic material for watches or jewellery including at least one strand, the method including a step of making, by moulding or extrusion, a band of synthetic material intended to form at least one strand, the method being wherein it then includes a step of chemical mechanical polishing the band. A bracelet made of synthetic material for watches or jewellery includes at least one strand formed of an extruded or injection moulded band, wherein at least one strand has a roughness Rp less than or equal to 3 &#x3bc;m and preferably less than or equal to 2 &#x3bc;m.

Plastic bracelet and a method of making

A thermochromic element including a thermochromic layer including a binder and a thermochromic pigment chosen to react at a specific temperature so that the pigment passes from a first color to a second color when the specific temperature is reached. The thermochromic layer coats a thermally conductive layer, and is protected by an optically transparent layer that protects it from chemical and physical degradation.

External element with temperature sensor

A decorative item made from a moulded material having a density of between 2 and 7 g/cm, wherein the moulded material includes by weight: 60 to 90% of a metallic or ceramic material having a density higher than or equal to 5 g/cm, 10 to 32% of a plastic material including a thermoplastic resin and a coupling agent, 0 to 8% of a reinforcement, 0 to 3% of a pigment. Also, a method of manufacturing this decorative item by injection moulding.

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Neuchatel, Switzerland

Nicolas Francois