[001] The present invention relates to the field of index for watch dial. The
present invention in particular relates to a system and method for ceramic index to
be used in watch dial.
5 DESCRIPTION OF THE RELATED ART:
[002] In recent years, ceramicized polymer materials have become a research
hotspot in the field of new materials due to their characteristics of fire or high
temperature ceramics and excellent fire resistance. The invention patent
CN102964836B discloses a ceramicized silicon rubber, a preparation method and
10 a use thereof. The ceramicized silicon rubber material shows very excellent fire
resistance when applied to electric wires and cables. Invention patent
CN101404189B discloses a rapid ceramicized refractory cable material and a
preparation method thereof. The ceramicized polyolefin material is also mainly
used in the wire and cable industry.
15 [003] After research, it is found that the current applications of ceramic polymer
composites are basically concentrated in the field of wires and cables, and most of
them are used in extrusion or calendering processes.
20
25
[004] Reference may be made to the following:
[005] Publication No. CN I 07043507 relates to a preparation method of an
injection-moldable ceramic composite material. The preparation method contains
the main components of uniformly mixing polyolefin resin, nano-modified
ceramic powder, a ceramic forming aid and a processing aid, and carrying out
granulation by virtue of an internal mixer, two screws or a single screw, so as to
obtain the injection-moldable ceramic composite material. The injection-moldable
ceramic composite material prepared by virtue of the preparation method has
relatively high melt index, good melt fluidity and very good high-temperature
ceramic forming performance, and an injection-molding product has high dimensional stability; and the preparation method is simple m process route,
stable in product quality and suitable for industrial production.
[0061 Publication No. JP2007284779 relates to ceramics for decorative
component which give high-grade impression, aesthetic satisfaction and mind
5 soothing effect with golden color tone which is popular in the marketplace, and a
decorative component for a watch that uses the same. ;Solution: The ceramics for
decorative component comprise titanium nitride as a main component, nickel as
the auxiliary component, and at least one kind selected from among a group of
vanadium nitride, niobium nitride, tantalum nitride, molybdenum carbide,
10 niobium carbide, tungsten carbide and tantalum carbide as an additional
component, wherein the arithmetic mean height Ra of at least the decorative
surface is 0.03 J.Lm or less, and the decorative surface has such a color tone that
lightness index L * is in a range from 72 to 84, and chromaticness indices a* and
b* are from 4 to 9 and 28 to 36, respectively, in the L *a*b* color space of
15 ClEI976.
[0071 Publication No. US2015217479 relates to methods for improved ceramics
component casting. One such method may include vacuuming a ceramic-based
slurry mixture and/or vacuuming a component mold. The vacuuming of the
ceramic-based slurry mixture and the component mold may be to remove air
20 bubbles from the respective elements. More specifically, the vacuuming may
remove air bubbles from the ceramic-based slurry mixture and from a cavity of
the component mold, respectively. The method may also include disposing the
ceramic-based slurry mixture into the cavity of the component mold, and
continuously vacuuming the cavity of the component mold including the ceramic-
25 based slurry mixture for a predetermined time to remove any additional air
bubbles included in the ceramic-based slurry mixture. Finally, the method may
include forming a ceramic component within the continuously vacuumed cavity of
the component mold over the duration of the predetermined time. The ceramic
component formed from the ceramic-based slurry mixture.[008] Publication No. US20l4077403 relates to a method of manufacturing a
master batch for the molding of colored parts, including the steps of: preparing a
mixture comprising an inorganic powder, advantageously ceramic, and a dye;
submitting the mixture to a spray-drying step to obtain an atomized powder;
5 submitting said atomized powder to a presintering step; mixing the presintered
powder with an organic binder, advantageously polymeric, to obtain the master
batch.
[009] Publication No. US9284485 relates to a persistent phosphorescent ceramic
composite material which is a sintered dense body comprising two or more
10 phases, a first phase consisting of at least one metal oxide and a second phase
consisting of a metal oxide containing at least one activating element in a reduced
oxidation state.
[010] Publication No. W020 13160740 relates to a method for crimping a stone to
a support consisting in: a. machining at least one passage-type recess in the
15 support, comprising a shoulder close to the front visible surface thereof; b.
attaching the support to a mount the front surface thereof being in contact with the
mount c. depositing a hybrid ceramic bead along the shoulder of the recess d.
introducing a stone to be crimped in a recess, the front surface thereof being
supported on the mount; e. heat-treating the assembly of the support stone mount
20
25
n;::; U'T
tJ b::. b.. o. u-- ..&.
and counter-part in an oven between l00°C et 150°C in a controlled atmosphere;
and f. separating the support and the stone(s) thereof from the mount and cleaning
the crimped support.
[011] Publication No. W020 II 035446 relates to a dyed composite material
including a matrix in which metal nanoparticles coated with a shell are dispersed.
Said material is characterized in that the matrix is a. thermosetting or photo
polymerizable resin reinforced by an inorganic filler consisting of one or more
silicates and/or silica. The invention also relates to a method for making such a
dyed composite material, to a layered material, to a method for making a
timepiece or piece of jewelry, and to the use of the abovementioned materials in jewelry or clock-making. The latter may be a metal surface, ceramic, cermet or a
light reflecting surface, for example a white substrate. The intense and deep
"color" effect is then amplified by the scattering of light reflected on the substrate.
(012] Publication No. US2016308184 relates to provides ceramic nanofibers,
5 morphology-controlled ceramic-polymer hybrid nanofibers, morphologycontrolled
ceramic nanofibers, core-sheath nanofibers and hollow core nanofibers
using ceramic precursor materials and polymer materials which are combined and
undergo electrospinning. The current disclosure provides for methods of forming
these nanofibers at low temperatures such as room temperature and in the
10 presence of oxygen and moisture wherein the ceramtc precursor cures to a
ceramic material during the electrospinning process.
[013) Publication No. KR20180127628 relates to a high polymer-ceramic hybrid
film having excellent mechanical properties, and a manufacturing method thereof.
The high polymer-ceramic hybrid material is a high polymer-ceramic hybrid film
15 havir.g excellent mechanical properties, and can be applied to a medical structure
or a food packing container by realizing excellent mechanical properties and
maintaining a film shape for a long time. In addition, hydrogel used in the
manufacturing process for the film can be usefully utilized as a 3D printing
material. In addition, the high polymer-ceramic hybrid film can improve
20 mechanical strength by changing the processing process for a hybrid solution in
order to change arrangement of ceramic particles inside the hybrid material.
Moreover, the manufacturing method for a high polymer-ceramic hybrid film can
manufacture a high polymer-ceramic material even at room temperature with only
simple and easy manufacturing processes. The high polymer-ceramic hybrid film
25 comprises: alginate biocompatible polymer including a carboxyl group and a
hydroxyl group; calcium phosphate; a divalent metal ion.
[014) Publication No. US2015057402 relates to a ceramic particulate and polymer
composite having enhanced viscoelastic and rheological properties. A ceramic
material that is or can be formed into a particulate having a particle size ranging from about 10 microns to about I ,000 microns can be used in the invention. The
maximum size is such that the particle size (Ps) of the particle is less than 20% of
either the least dimension or the thinnest part under stress in an end use article.
Such particles can be substantially spherical, substantially amorphous or can
5 achieve virtually any three-dimensional shape formable by small particle size
materials.
(015] Publication No. W020 16085654 relates to a hybrid component is provided
including a plurality of laminates stacked on one another to define a stacked
laminate structure. The laminates include a ceramic matrix composite material
lO having certain features such as matrix porosity characteristic and hierarchical fiber
architecture and at least one opening defined therein. A metal support structure
may be arranged through each opening so as to extend through the stacked
laminate structure. An insulating ceramic material such as the CMC material, the
thermal gradient through thickness depends on the porosity characteristic and the
15 resulting thermal stresses depend on the local elastic modulus. Elastic modulus
and thermal conductivity are two interdependent properties that require
optimization to maximize the material reliability.
[016] Publication No. US4 724191 relates to hydronium bonded polycrystalline
shaped articles may be produced by the simple expedient of selecting a hydroni urn
20 containing powder prepared by one of a plurality of prior art methods and then
intermingling the hydronium powder with ortho-phosphoric acid to obtain a
viscous mixture (resembling the consistency of toothpaste). The mixture is then
formed into a predetermined shape, for example a disc or tube, and the shaped
polycrystalline ceramic is allowed to cure. The result is bonded hydrogen
25 conducting- hydronium, H30+, solid rigid structure with a smooth finish copying
the mold from which it was shaped. Specifically, the hydronium containing
powders are selected from the group of poly antimonic acid and precursor
powders generally known as Nasicons and preferably being selected from the
group of powders consisting of sodium beta I beta "-alumina, sodium/potassium
30 beta I beta "-alumiria, sodium zirpsios, Gasicon andYasicon. [017] Publication No. US4526844 relates to a nasicon compound and a method of
making it. The nasicon compound is rhombohedral at room temperature
and has the general formula M 1 +x+0.02y+0.04zM'2-0.02(y+z)
M"0.02yM'"0.02zM""xM""'3-x012 where M is selected from lithium, sodium,
5 calcium, and silver, M' is selected from zirconium, titanium or hafnium, M" is
selected from yttrium, scandium or lanthanum, M"' is selected from magnesium,
calcium, strontium or barium, M"" is selected from silicon and germanium, M""' is
selected from phosphorous and arsenic, x is about 1.6 to about 2.2, y is about 0 to
about 15, and z is about 0 to about 15. The preferred compound is
10 Nat +xZr2SixP3-xO 12. A sodium sulfur battery using the nasi con compound is
also disclosed. The resulting nasicon powder can then be ground to a particle size
of about 200 to about 325 mesh which can be pressed and sintered to form any
desired shape. Pressing can occur at a variety of pressures, for example, at 10,000
to 50,000 psi. In order to eliminate a separate heating step, it is also possible to
15 press while the mixture is being heated to drive off the liquids and organics. Once
the particular shape has been pressed; it is sintered at about 1000 DEG to about
1300 DEG C. for about 15 minutes to about 20 hours to form the polycrystalline
ceramic. The ceramic can be used as a solid electrolyte in a battery, as a sodium
sensor, or for other purposes which require a sodium or other metal conductor,
20 .· such as a fuel cell.
[018] Publication No. A T5083 14 relates. to hardenable material. compnsmg a
monomer, a polymerization initiator and a thixotropic agent is used to repair
damage on the visible surface of a ceramic tile. Independent claims are also
included for: hardenable material as above; repairing damage on the visible
25 surface of a ceramic tile by forming a recess in the damaged area, introducing a
hardenable material as above into the recess and hardening the material.
[019] Publication No. A T543633 relates to a repair material for a molding tool for
plastics processing. In the production of molds and also in production often small
errors or damage to the mold, which must be repaired. Such repairs are associated
30 with a lot of effort, the mold are usually removed and must be processed· locally or more often at the toolmaker. The repair can be done by welding and a postprocessing,
which includes a milling process. When welding occur especially in
aluminum molds large errors due to the thermal conductivity, so that the weld is
usually an inferiority. The equipment required for today's custom reader welding
5 is very high and costly. The repair material further contains at least one filler,
wherein the filler content depending on the application within a wide range, for
example between 2 and 95%, may vary. Fillers can be used to reinforce the repair
material, i. H. to increase the strength of the repair material in the cured state.
Such fillers have a passive, in particular inorganic, core and an active shell, which
l 0 is involved in the reactive polymer formation.
[0201 Publication No. EP2253606 relates to a ceramic tile surface formed on the
visible side, comprises forming a recess in the area of the damage, introducing or
fi IIi ng a first hardenable material into the recess and then hardening the first
hardenable material, again removing a layer of the filled and hardened first
15 material, which adjoins at the outer surface of the filled and hardened material
lying on the visible side of the ceramic tile, and filling a second hardenable
material into the formed recess and then hardening the second hardenable
material. The hardening of the once again applied hardenable material takes place
in two steps after surface-smoothing, where glycerin gel is applied after a first
20 light hardening and a second light hardening is carried out by the glycerin gel. For
the formation of a flat surface on· the layer of the hardenable material; which is
applied after the surface-smoothing, a film is placed before hardening and is
removed again after the hardening. For the formation of a structured surface, the
layer of the hardenable material, which is applied after the surface-smoothing, is
25 structured before the hardening.
(0211 Publication No, US2005239993 relates to a repair kit for repairing damages
in surfaces or on edges of objects of natural stone, in particular of marble,
comprises a liquid or highly viscous filler material, which is curable by
polymerization, polyaddition or polycondensation, and furthermore at least one
30 granulate alreaey cured by polymerizatic>n, polyaddition.or poly,condensation. [022] Publication No. A T7564 (U1) relates to a repair kit for repairing damages in
surfaces or on edges of objects, in particular of natural stone, ceramic or metal,
compnses a liquid or pasty polymerization-hardenable repair material
accommodated by at least one storage container in a further reservoir contained
5 adhesion promoter. The adhesion promoter is accommodated by an absorbent
material arranged in the further container and is in contact with the absorbent
material and through an opening in the reservoir from this protruding capillary tip.
on the object to be repaired orderable.
[023] Publication No. JP2005274346 relates to a stainless steel product, wherein
10 the upper surface 20a is wider than the under surface 20b and the upper surface
20a and the side surface 20g have specular gloss, is used by sticking the under
surface 20b onto a display plate 30 through an adhesive 25. A metal deposition
film 2la or a metal plating film is applied onto the upper surface 20a to acquire a
glossy metallic color. As for the specular gloss on the upper surface 20a, a mirror
15 surface specification is acquired by applying grinding, lapping or glossy nickel
plating, and as for the specular gloss on the side surface 20g, a mirror surface is
acquired by electropolishing.
[024] Thus the removal of indexes from mould without any damage is still a
challenge.
20. [025] In order to overcome above listed prior art, the present invention aims to
Q)
e> provide a system and method for ceramic index to be used in watch dial
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OBJECTS OF THE INVENTION:
[026] The principal object of the present invention is to provide a system and
method for ceramic index to be used in watch dial

25 [027] Another object of the present invention is to provide a process which is used

to produce ceramic index without any damage .

WE CLAIM:

1. A system and method for ceramic index to be used in watch dial includes
following steps:
a) The ceramic index shape is milled with help of CNC machine on brass
disc
b) Brass mould are then sand blasted in powder of 110 J.l grain size for proper
adhesion of hyceram with brass surface.
c) Brass moulds are then cleaned in ultrasonic machine for removal of oil or
grease or any foreign particle.
d) Hyceram is filled with high pressure in brass mould.
e) Extraction of ceramic indexes takes place by a chemical process in which
chemical named FeCI3 is used with DM water to dissolve brass in it and
remaining behind is ceramic indexes.
2. The system and method for ceramic index to be used in watch dial, as claimed
in claim 1, wherein the agitator is being used to speed up the reaction process
between brass and FeC13 Solution and the method of speeding up the reaction
includes following steps:.
a) 5% Hydrochloric acid is added to the solution of Ferric chloride and DM
water.
b) The process starts with mixing all three in a beaker and heat the solution to
40- 80 degree C for I 0- 50 minutes.
c) The solution is ready to use .
d) Dip the ceramic filled brass moulds in the solution and start the agitation.
e) Agitation provides speed to the dissolving process.

. f) The brass mould starts dissolving in the solution and it takes 12-16 hours for
the solution to dissolve the mould without affecting the basic chemistry and
surface fmish of the ceramic materiaL
g) Now stir the drain the solution and obtain highly polished ceramic material
which can be furthermore cleaned using citric acid by dipping the ceramtc
material in it for 20- 40 minutes
h) Further ultrasonic cleaning for 10-25 minutes.
3. The system and method for ceramic index to be used in watch dial, as claimed
in claim 1, wherein the iron chloride (FeC13) is used for extraction which
reacts with brass without any affect on ceramic material.