Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
  • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
  • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
  • A44C27/00—Making jewellery or other personal adornments
  • A44C27/001—Materials for manufacturing jewellery
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
  • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
  • A44C5/0053—Flexible straps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
  • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
  • B29C43/24—Calendering
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/02—Layered products comprising a layer of natural or synthetic rubber with fibres or particles being present as additives in the layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
  • B32B25/16—Layered products comprising a layer of natural or synthetic rubber comprising polydienes homopolymers or poly-halodienes homopolymers
• • 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
  • G04B37/00—Cases
  • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
  • G04B37/225—Non-metallic cases
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
  • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
  • B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
  • B29K2023/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
  • B29K2105/0032—Pigments, colouring agents or opacifiyng agents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
  • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
  • B29K2995/0035—Fluorescent
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/48—Wearing apparel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2250/00—Layers arrangement
  • B32B2250/24—All layers being polymeric
  • B32B2250/248—All polymers belonging to those covered by group B32B25/00
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/40—Properties of the layers or laminate having particular optical properties
  • B32B2307/422—Luminescent, fluorescent, phosphorescent
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2451/00—Decorative or ornamental articles

Definitions

• the present invention relates to the field of the manufacture of parts made of elastomeric material, in particular rubber-based. It relates, more particularly, to a manufactured article at least partially made of an elastomeric material endowed with luminescence properties and its production process.
• Such a luminescent object can in particular be used for dressing timepieces but also in other industrial fields for decorative or functional purposes, in particular for safety.
• trim parts can also be made from these same materials, both for watches (dials, middle parts) and other applications.
• Multicolored plastic or thermoplastic bracelets are already known, with or without having reliefs or colored patterns in particular.
• the different colored portions can be obtained according to various techniques, in particular by colored coating or by removing material located on a part formed beforehand by molding a sandwich of several layers of calendered elastomeric material, at least one intermediate layer of which is of a different color of a top layer.
• elastomeric parts exhibiting luminescence properties, whether for decorative or functional purposes, are not known to date.
• the present invention thus provides a manufactured article comprising an elastomeric material with a luminescent character as well as, in a second aspect, its manufacturing process.
• the manufactured article according to the present invention is at least partially made of an elastomeric material, such as in particular a rubber or a mixture of rubbers, said elastomeric material exhibiting at least in places a luminescent character.
• the manufactured object according to the present invention is such that it presents, where the latter is formed of elastomeric material, at least certain zones or sections in the elastomeric material which has a luminescent character. .
• the term "luminescent” is understood according to its classic assertion of the property of emitting light of a substance or an object when cold, without producing heat. It includes in particular the fluorescence or phosphorescence properties, that is to say the ability to emit light after having been subjected to an external energy stimulus such as incident radiation, in particular for example white or ultra-light light. purple, shock, or heating by friction.
• the luminescent character of the article of manufacture of the invention results from the integration into the mass of elastomeric material of a compound capable of luminescence.
• This compound can in particular be a luminescent pigment, such as, for example, produced and marketed under the brand Super-LumiNova®.
• the elastomeric material comprises at most 80% by weight of compound capable of luminescence.
• concentration of luminescent compound in the elastomeric material may be adapted to a large extent by a person skilled in the art depending on the luminescence intensity desired for the manufactured product as well as the mechanical properties of the desired elastomer material, in particular its vulcanization and resistance properties abrasion and / or breakage.
• the compound capable of luminescence is distributed homogeneously in the mass of elastomeric material.
• the compound capable of luminescence is localized or concentrated in a discrete manner, that is to say locally in certain exclusive areas of the elastomeric material, whether on the surface or in a section of thickness of the elastomeric material.
• the invention also provides a method for producing a manufactured object as defined above, this method comprising the following steps: a. acquire a preparation of elastomeric material comprising a compound capable of luminescence, b. affixing said preparation of elastomeric material comprising a compound capable of luminescence on all or part of an elastomeric material component of complementary nature, in particular of a blank formed of calendered elastomeric material, c.
• said preparation is affixed in liquid form or as a calendered sheet on one face of said component.
• said component coated with the preparation of elastomeric material comprising a compound capable of molded luminescence is partially crosslinked after molding.
• said blank is then molded onto by a piece of elastomeric material of complementary nature also partially crosslinked so as to assemble them by total crosslinking on each other to form said manufactured object.
• a material removal operation can be carried out.
• This removal of material may in particular consist of at least one deburring operation, which may be mechanical using a manual or automatic tool or even physical, in particular by heating using a laser beam, so to clearly delimit the lines, bands or shapes constituting the luminescent part with respect to the rest of the manufactured object or to bring out these in the mass of the object.
• the luminescent part of the object covers or forms all or part of a relief on the part of overmolded elastomeric material.
• the component of elastomeric material on which is affixed the preparation comprising a compound capable of luminescence consists of one or more sheets of calendered elastomeric material at least partially vulcanized.
• the elastomeric material of the preparation and of the component on which it is affixed is a rubber, in particular of the EPDM or EPM type, for example.
• the luminescent compound of the preparation is a luminescent pigment, in particular marketed under the brand Super-LumiNova®.
• a luminescent pigment could in particular be integrated into the preparation in the liquid state in a concentration of at most 80% by weight of compound capable of luminescence.
• FIG. 1 represents in a synthetic manner the steps of the method of manufacturing an object. manufactured according to the invention and FIG. 2 a manufactured object according to the invention obtained according to this process.
• a manufactured object 10 such as a watch strap strand, a dial or even a watch case trim element made of elastomeric material, in particular rubber, comprising in its mass or on one surface at least one luminescent compound such as, in particular, a phosphorescent pigment such as marketed under the brand Super-LumiNova®.
• the invention is however not limited to this single pigment but applies generally to the integration of any compound capable of luminescence in an article manufactured from an elastomeric material in order to give the latter properties. luminescence properties, in particular following illumination under white light or in the ultra-violet light spectrum.
• the manufactured article 10 of the invention is made at least partially of elastomeric material and at least a part of which has a luminescent character.
• the manufactured object 10 may consist of said elastomeric material, and all or part of this material.
• elastomer may include a pigment giving it its luminescence properties.
• the manufactured object 10 can thus comprise on a surface or in a section one or more discrete zones such as lines, points or surfaces in which a said luminescent pigment provides a locally luminescent character to the object.
• the elastomers used to achieve the manufactured object 10 of the invention can be chosen from general elastomers, such as natural rubber, polyisoprene, a copolymer of butadiene and styrene, known as the abbreviation SBR, or even polybutadiene.
• the elastomers can also be chosen from special elastomers, such as, for example, a copolymer of isobutylene and isoprene, known by the abbreviation of MR, polychloroprene, a copolymer of ethylene and propylene-diene, known as name of EPDM, or a copolymer of ethylene and propylene, known under the name of EPM.
• Said manufactured article may in particular consist of one or more sheets of calendered elastomeric material as defined above.
• the sheets of calendered material can be assembled on top of each other by vulcanization, in a conventional manner in itself for the manufacture of elastomeric parts.
• Each sheet of calendered material constituting the blank may in particular be of a thickness preferably between 0.5 mm and 10 mm, more preferably between 1 mm and 3 mm.
• the luminescent pigment integrated into the elastomeric material of the manufactured article 10 may preferably be a phosphor pigment such as marketed under the brand Super-LumiNova®.
• a phosphor pigment such as marketed under the brand Super-LumiNova®.
• the manufactured article 10 according to the invention can advantageously be obtained by implementing the following method.
• a first step 1 consists first of all in providing a preparation 11 of elastomeric material in which is integrated a said luminescent pigment.
• the preparation of elastomeric material 11 essentially consists initially of a liquid base of elastomeric material, for example natural rubber, EPDM or EPM, in which between 5% and 60% by weight of pigment is mixed.
• luminescent preferably between 10% and 50% by weight of luminescent pigment depending on the luminescence intensity that it is desired to impart to the manufactured article produced.
• the pigment and the elastomeric paste are mixed so as to obtain a homogeneous mixture in which the pigment is preferably distributed uniformly.
• This preparation 11 is then reserved, in liquid form or of green calendered sheets of this elastomeric preparation, intended for the production of vulcanized assemblies with other components of elastomeric material 12, identical or of a complementary nature in order to be able to be crosslinked together.
• a second step 2 then affixed in a second step 2 the preparation 11 on all or part of a component 12 of elastomeric material of complementary nature, formed for example of calendered elastomeric material.
• This affixing may consist of placing a green preparation sheet 11, or strips of green leaves, there are also lines, dots or shapes cut from a green preparation sheet 11 on a surface of the component 12 to form a luminescent surface relief on the surface. the component or between two sheets of calendered material in order to form a sandwich, an intermediate layer of which will be luminescent once the sandwich has been vulcanized in a third step.
• a third step 3 to the molding of the elastomeric material preparation 11 comprising a compound capable of luminescence with the component 12 so as to at least partially crosslink said preparation on said component in a mold 13 of suitable shape to form a blank of said manufactured object 10 or a part thereof comprising at least one luminescent part.
• the blank thus formed has at least substantially the shape of the article of manufacture 10 that it is desired to obtain.
• This blank can be the final object 10, to which only an optional finishing operation 4 such as material removal can be applied in addition to deburr the blank after molding and / or to properly delimit the luminescent zones of the object 10 from those. non-luminescent.
• This removal of material may in particular consist of at least one deburring operation, which may be mechanical using a manual or automatic tool or even physical, in particular by heating using a laser beam, so to clearly delimit the lines, bands or shapes constituting the luminescent part with respect to the rest of the manufactured object or to bring out these in the mass of the object.
• preparation 11 has been affixed to the surface of a component of a different color, the latter will then form, after molding, a relief element luminescent on the surface of the blank, the relief of which will be exacerbated after the object has been subjected to incident illumination of white light.
• This molding operation makes it possible to provide on one face of the blank a relief shape, for example of a geometric shape, rebate, a logo, an icon, a name or any other shape that one wishes to render apparent by color contrast on one side of the bracelet strand to be produced from the blank 10.
• a relief shape for example of a geometric shape, rebate, a logo, an icon, a name or any other shape that one wishes to render apparent by color contrast on one side of the bracelet strand to be produced from the blank 10.
• relief shape any regular shape or not, resulting from a hollow or projection conferring localized variation in thickness, preferably of the order of 1 to 5 mm at most. , on one face of the blank and extending along one or more segments of straight lines or curves.
• the relief shape may be produced locally in a singular manner on the face of the blank, or else repeatedly at different positions thereof.
• the blank can also be an intermediate component intended to be then overmolded by total crosslinking with one or more other elastomeric components according to conventional molding methods to achieve the final article of manufacture.
• the preparation is applied in liquid form, sprayed or not, on the component 12, one can advantageously coat all or part of the reliefs previously produced according to conventional molding processes of elastomeric components 12 to achieve during molding only the final vulcanization and therefore the adhesion of the elastomeric material of the preparation on the component 12. It is thus possible to coat a relief in its entirety or else only certain portions thereof such as flanks or faces that are flat or not, ribs or counterbores, on which it is desired to apply a luminescent coating so as to provide a very localized luminescent effect, as after an abrasion of material as previously presented, between the relief and the rest of the blank forming the major part of the bracelet strand made.
• the molding parameters of the preparation 11 on the component 12 to obtain the assembly by more or less partial vulcanization are common to the molding processes of elastomeric materials between them as known to those skilled in the art, who may adapt the various parameters according to the elastomer used and the dimensions of the manufactured objects 10 to be obtained.
• the method according to the invention can also be used to make various manufactured objects 10 of elastomer such as bracelets, inserts or others such as for example parts of watch cases or any other parts that can be made of elastomers. and on which it may be interesting to affix a luminescent decorative element.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Physics & Mathematics (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Thermal Sciences (AREA)
• General Physics & Mathematics (AREA)
• Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

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Citations (2)

Family Cites Families (8)

• 2019
  • 2019-09-18 CH CH01456/19A patent/CH715751B1/fr unknown
  • 2019-09-18 EP EP19773391.8A patent/EP4031344A1/de active Pending
  • 2019-09-18 RS RS20220269A patent/RS67446B1/sr unknown
  • 2019-09-18 WO PCT/EP2019/075089 patent/WO2021052582A1/fr not_active Ceased

Patent Citations (2)

Non-Patent Citations (1)

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