Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
  • C08L71/02—Polyalkylene oxides
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C5/00—Constructions of non-optical parts
  • G02C5/008—Spectacles frames characterized by their material, material structure and material properties
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D7/00—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
  • B05D7/50—Multilayers
  • B05D7/52—Two layers
  • B05D7/53—Base coat plus clear coat type
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
  • C09D133/04—Homopolymers or copolymers of esters

Definitions

• the present invention has for an object a method for decorating an accessory.
• the invention finds application in many technical fields from fashion to automotive, and particularly, by way of non-limiting example, in the decoration of accessories such as glasses, bracelets, cuff links, earrings, jewelery, bags, shoes, jackets, helmets, scarves, ties, car seats or dashboards coatings, cases, watches, fittings, accessories for bathrooms or kitchens, and so forth.
• accessories such as glasses, bracelets, cuff links, earrings, jewelery, bags, shoes, jackets, helmets, scarves, ties, car seats or dashboards coatings, cases, watches, fittings, accessories for bathrooms or kitchens, and so forth.
• the optics industry is a continuously developing market that nowadays is addressed to and involves a large number of manufacturers, technicians and craftsmen of different sectors.
• eyeglass frame reference is made to the frame holding the lenses.
• Coloured eyeglass frames are also known, i.e. characterized by a greater variety of vibrant colors, which are obtained with coloured plastic materials.
• the technical task underpinning the present invention is to propose a method for decorating an accessory which overcomes one or more of the drawbacks of the prior art mentioned above.
• a further object of the invention is to provide a method for decorating an accessory that permits the accessory to be customized with colouring of any kind whatsoever.
• FIG. 1 is a schematic perspective view of an accessory part during a step of the method for decorating an accessory according to the present invention
• FIG. 2 is a schematic perspective view of an accessory during a step of assembling the accessory.
• an accessory particularly an eyeglass support frame 1 .
• the accessories decorated according to the proposed method can be typically bracelets, sunglasses, cufflinks, earrings, jewelery, handbags, shoes, jackets, helmets, scarves, ties, eyewear, as well as coatings for cars seats or dashboards and cases for accessories in general.
• the accessory to be decorated may be made of metal, such as aluminum, steel or titanium, or bakelite, cellulose acetate, optyl, leather, synthetic leather (e.g. Sky), ultem, wood, polymeric materials, nylon, fiber carbon, and more.
• metal such as aluminum, steel or titanium, or bakelite, cellulose acetate, optyl, leather, synthetic leather (e.g. Sky), ultem, wood, polymeric materials, nylon, fiber carbon, and more.
• the support frame 1 is preferably made of plastic, even more preferably it is obtained by a moulding process by injection.
• the frame 1 can be made of titanium, aluminum, acetate, and so on.
• the method for decorating a support frame 1 comprises firstly the step of preparing at least a part 1 a of the eyeglass support frame 1 .
• 1 a it is indicated an eyeglass temple.
• the part 1 a is preferably resting on a bearing surface or is partially fastened to a coupling device not shown.
• the method then comprises a step of superficially abrading at least a surface portion 2 of the part 1 a of the support frame 1 to be decorated.
• the surface abrasion is preferably performed through the use of an abrasive material, for example a glass cloth.
• the abrasion advantageously allows to obtain an irregular and rough surface in order that a suitable surface porosity is obtained for preparing the surface portion 2 to the subsequent steps of the method.
• the method further comprises the step of removing the waste material resulting from the surface abrasion at the surface portion 2.
• This step is preferably realized by cleaning the surface portion 2 applying a degreasing agent thereon, preferably by spray application.
• the degreasing agent can be an organic solvent of the type adapted to be used as a thinner for polyurethane coatings and as a thinner for the cleaning of surfaces.
• the cleaning step is realized by using a non-silicone degreaser such as for example alcohol.
• the method according to the present invention comprises the step of applying an adhesion promoter or primer.
• the primer is preferably of the type suitable to the application on the following sub-layers: metal, leather, plastic materials such as glass- resin, epoxy resins, PVC, ABS and wood ...
• the primer is preferably an isocyanate.
• the step of applying the adhesion promoter is carried out after the step of removing the waste material.
• applying the adhesion promoter improves the adhesion of the coating.
• the method for decorating the support frame 1 further comprises the step of applying a coating 3 on the surface portion 2 of the part 1 a concerned and the following step of drying the surface portion 2 itself.
• the varnish is a two-component epoxy resin, but it may be a polyurethane resin or an acrylic substance.
• the drying step is obtained by letting rest the part 1 a at 25°C for 8-10 hours and then put it in an oven, not shown in the appended figures, for a period of time comprised between 1 and 3 hours at a temperature of 60°C.
• the varnish 3 is characterized by excellent adhesion properties that allow a thorough adhesion to the surface portion 2 in addition to having a balanced-viscosity liquid consistency that ensures a uniform appearance in the surface portion 2 whereon it is applied.
• varnish 3 herein described is bindable chemically to the primer, which in turn is capable of binding chemically to the organic substrate.
• the part decorated according to the method of the invention acquires improved physical characteristics such as greater flexibility.
• the varnish 3 already comprises the primer therein; in other words, advantageously, the method for decorating can be shortened, thereby avoiding the need to perform the step of applying the adhesion promoter, in that the latter is already comprised in the resin-based varnish 3 which is used in the step of applying the varnish 3.
• the varnish 3 is highly resistant to abrasion and scratches, thus being eyewear aesthetics deterioration prevented.
• the varnish 3 is advantageously highly resistant to heat and thermal shock, and this permits to manufacture eyewear intended to be used in the presence of extreme weather conditions. Furthermore, if the eyeglass were to be inadvertently forgotten in the hot summer sun, the eyeglass would not suffer any kind of physical and chromatic variation. Further, the eyeglass obtained by the method herein disclosed of decorating an object, may be exposed to the heat flows typically used for accommodating the structure of the support frames 1 (by way of "Frame heaters"), so that the eyeglass are capable of better suiting users' physiognomy.
• the varnish 3 forms an excellent protective layer of the part 1 a of the support frame 1 that is resistant to contact with aggressive chemical substances such as for example the solvents contained in the degreasing products for the cleaning of the lenses or of the eyewear frame.
• the application of the varnish 3 further allows the support frame 1 to not get damaged as a result of twisting and mechanical stress that affect eyeglass during their life cycle.
• the varnish 3 is applied preferably by means of atomization means 4.
• the atomization means 4 may include a varnishing tool of the so-called "low pressure" type, for example an airbrush 4a as shown in figure 1 .
• the step of applying the resin-based varnish 3 on the surface portion 2 is preferably carried out inside a powders suction chamber in order that possible leakage into the environment may be prevented.
• the amount of varnish 3 which is applied on the surface portion 2 is preferably equal to 250 g/m2; this value varies according to the type of varnish.
• the varnish 3 used in the proposed method includes a two- component which is preferably characterized by the following technical features:
• Non-volatile particles 65%;
• Friction dry 0,77 / Wet 0.49 (Leroux NSF); Resistance to abrasion 0.5 Grams loss of weight (Taber, H18 / 1 Kg /1000 rev.);
• Color fastness 8 (DIN 54004);
• varnish may also be omitted.
• the transparent medium is applied directly to the primer.
• the coating is applied via a so-called "transparent medium", namely a transparent coating substance which preferably is isocyanates catalyzed.
• the transparent medium comprises a catalyst, such as for example an isocyanate; also the transparent medium shall be subjected to a step of drying similar to that of the varnish.
• a catalyst such as for example an isocyanate
• the transparent medium hereof permits to define a sort of external protection sheath which confers to the eyeglass an even greater resistance to scratches.
• the primer, varnish and transparent medium layers chemically combine with each other, thereby defining a single coating for the eyeglass frame, wherein the eyeglass frame, if constituted by organic material, can be easily chemically integrated with the surface portion thereof.
• the decoration method of the invention allows to advantageously obtain a large amount of color combinations and to customize the eyeglass support frame 1 according to the needs.
• the eyeglass obtained by the method herein described is resistant to ultrasonic cleaning.
• FIG. 2 it is shown a step of assembling eyewear temples according to the method described herein, in which the eyewear temples are assembled with the remaining part 1 a of the support frame 1 , in order that the eyeglass support frame 1 is obtained.
• the present invention attains the proposed objects, thus overcoming the drawbacks which affect the prior art and providing the user with a method for decorating an accessory, in particular an eyeglass support frame 1 , which allows to obtain an extensively customized final product that at the same time is resistant to external agents.
• the method for decorating an accessory just described is configured as a versatile method which can be advantageously employed in different sectors to decorate any type of accessory in a simple, practical and economical manner, so that a customized accessory is obtained that fits to any need of the consumer.
• a description is reported hereinafter of the mode adopted and the results obtained following some experiments by the Applicant.
• the materials used in the trials are the ones listed below.
• Substrate eyeglass temples in acetate; injected eyeglass temples; metal eyeglass temples, eyeglass temples in TR90 (nylon and carbon fiber), black leather patches, blue leather patches, red leather patches, acetate raw slabs, aluminum raw slabs, eyeglass titanium frame, injected eyeglass frames, eyeglass steel frame, acetate eyeglass frames, Rayban eyeglass, eyeglass injected front parts.
• Primer Product SIKA, Primer-215; Thinner: CBR - KAR acrylic thinner - 30 loose.
• Varnish blue epoxy, SIKA - Pulastic Coating 221 -323 Midnight blue - code 8406; red epoxy, SIKA - Pulastic Linepaint - Oranje-red orange - code 9906; Yellow epoxy SIKA - Pulastic Linepaint - Yellow - code 9916; Blue Pearl acrylic ink - Bonny's form 28515; red acrylic, Lechler ink - fuchsia- colored brilliant; acrylic yellow BSB - HS basecoat - 1023 Nicolsgelb.
• the catalyst 1 SIKA - Pulastic Linepaint - B comp - code 2203. Used transparent medium: SIKA - Pulastic Coating OS /CL-GL Comp A; Catalyst 2: SIKA-Pulastic Coating OS/CL-GL Comp B.
• the temperature did not result in any visual change or resistance change.
• the abrasion resulting from contact with sharp plastic objects and fingernails did not cause any damage.
• the temperatures taken into account refer to extreme cases such those for example of a leather purse forgot a full day on the dashboard of a car in the sun, or wherein a pair of leather gloves is used in a winter day in the high mountains.
• the temperature did not result in any visual change or resistance change.
• the abrasion resulting from contact with sharp plastic objects and fingernails did not cause any damage.
• the temperature did not result in any visual change or resistance change.
• 6- Methyl ethyl ketone (simulates the solvent for nail polish): leaves a halo on all samples but the resistance is higher than that of common eyeglass varnishes
• the temperatures taken into account refer to extreme cases such those for example, wherein a pair of glasses is forgotten a full day on the dashboard of a car in the sun, or wherein a pair of glasses is used in a winter day in the high mountains.
• the temperature did not result in any visual change or resistance change.
• the abrasion resulting from contact with sharp plastic objects and fingernails did not cause any damage.
• the frame was bent with pliers and the transparent medium was not damaged.
• 6- Methyl ethyl ketone (simulates the solvent for nail polish): leaves a halo on all samples but the resistance is higher than that of common eyeglass varnishes 7- Facial creams: no damage
• the epoxy varnish was added 20% thinner instead of 15% to favor application of varnish: the results were ameliorative.
• the yellow epoxy varnish has required a second coat both on injected eyeglass and on steel eyeglass in that it fails to provide a good coverage as the blue and red varnishes do, and this causes a tendency of the original color of the eyeglass to reemerge.
• the yellow acrylic varnish fails to suitably cover both the injected eyeglass and the steel eyeglass which is instead the case of the blue and red varnish, it follows that the original eyeglass color tends to reemerge.
• the steel eyeglasses were folded and deformed with the varnish having not been damaged.
• the composition of the transparent medium mixture was changed, i.e.: the catalyst amount was increased for promoting the drying process and the thinner amount was increased as well in order for it to maintain smooth applicability.
• the result was satisfactory in that smooth applicability of the transparent medium was maintained and all eyeglass front parts were perfectly dried.
• the lens repeatedly inserted into each of the eyeglass front parts and removed therefrom have not scratched the varnish nor the transparent medium.
• the red epoxy varnish has given good results up to 30% of thinner, after that the underlying color begins to become visible, the best sample appears to be the sample 95.
• the yellow epoxy varnish produced good results at high dilution and the best sample appears the sample 126. At a low dilution degree (samples 123 and 124) the varnish is rough.
• the blue acrylic varnish has given good results by each dilution, the best sample appears the sample 130.
• the red acrylic varnish has given good results by a 60% or even higher dilution. The best sample appears the sample 132.
• the yellow acrylic varnish produced some drawbacks due to the fact that it left the underlying color transpire probably because of a reaction with the underlying varnish.
• the sample 138 coated with the transparent medium does not scratch.
• the red epoxy varnish has worked well by each dilution, the best sample is the sample 146.
• the yellow epoxy varnish has worked well by each dilution, the best sample is the sample 148.
• the sample 163 exhibiting the only transparent medium, crumpled by effect of a reaction with the base material, however the sample 163 does not scratch when etched with the edge of the lenses.
• the blue epoxy varnish has worked well at each dilution, the best sample is the sample 167.
• the red epoxy varnish has worked well by each dilution, the best sample is the sample 169.
• the sample 188 coated with the transparent medium does not scratch.
• the blue acrylic varnish has given good results.
• the red varnish does not scratch the lenses.
• the yellow acrylic varnish has given good results.

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Physics & Mathematics (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• General Physics & Mathematics (AREA)
• Ophthalmology & Optometry (AREA)
• Optics & Photonics (AREA)
• Eyeglasses (AREA)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

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• 2016
  • 2016-07-21 EP EP16757952.3A patent/EP3487930A1/de not_active Withdrawn
  • 2016-07-21 WO PCT/IB2016/054346 patent/WO2018015789A1/en not_active Ceased

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