FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
AND
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See section 10; rule 13)
TITLE OF THE INVENTION
Material, Method and Apparatus for Inner Green Tyre Lube Powder Application
APPLICANT
CEAT LIMITED
of RPG HOUSE, 463, Dr. Annie Besant Road,
Worli, Mumbai 400 030,
Maharashtra, India
Nationality: Indian
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed.

TITLE OF THE INVENTION
Material, Method and Apparatus for Inner Green Tyre Lube Powder Application.
FIELD OF INVENTION
The present invention related to the material, method and apparatus for the application of inner green tyre lube powder after building process. More precisely the material, apparatus and method for the inner green tyre lube powder application. This invention enables to eliminate the petroleum based solvent inner green tyre paint.
BACKGROUND OF THE INVENTION
Manufacturing of pneumatic tires involves several steps. The first step in the tire manufacturing process is the mixing of raw materials—rubber, carbon black, sulphur, and other materials—to form the rubber compound. After the rubber compound is prepared, it is sent to ‘extrusion’ and ‘calendaring’ units prepare the components. Extrusion is the processes in which the mixed compound is undergoing to extrusion process, where the required profile or shape is made. Calendaring is the process in which the mixed compound the coating or applying over the fabric materials. The rubberised fabric is then called ‘ply’, which is used in the tyre body. The pre-maid components are then taken to a tire-building machine, where a operator builds up the rubber layers to form the tire. At this point, the tire is called a "green tire." When a green tire is finished, the metal drum collapses, allowing the tire assembler to remove the tire. The green tire is then taken to apply paint inside the green tyre, which enables the smooth removal from the mould after curing. Curing is the process of subjecting the green tyre to temperature and pressure for specified time. During this process ‘vulcanisation’ is happening. The green tire is placed inside a large mould for the curing process. A tire mould is shaped like a monstrous metal clam which opens to reveal a large, flexible balloon called a bladder. The green tire is placed over the bladder and, as the clamshell mould closes, the bladder fills with steam and expands to shape the

tire and force the blank tread rubber against the raised interior of the mould. During this curing process, the steam heats the green tire. Time in the mould depends on the characteristics desired in the tire. The ‘green tyre’ having a tendency of sticking to the mould and to the bladder. This will result in deformation of the ‘bead’ of the tyre. Tire bead is the term for the edge of a tire that sits on the wheel, which is a rubber coated metallic ring.
TECHNICAL PROBLEM
Tyre industry is facing a common issue of tyres stuck up inside the mould, which results in defective tyres mainly by getting bead bend. This is happened because of the sticking tendency of the green tyre to the mould as well as bladder. Because of the high manufacturing cost of the tyre, even a single tyre scrap will results in financial loss to the manufacturer. To overcome this difficulty tyre industry introduced the application of lubricants inside the green tyre before loading in to the mould called ‘inner green tyre paint’. This will help in ease in removal of the tyre after the vulcanisation process under temperature and pressure for specified period.
Conventional inner green tyre paints are either water based or solvent based. The main draw backs of water based inner green tyre paint is the time delay in drying the inner green tyre paint applied. Especially during monsoon seasons this will take more time and need to provide heat source to get it dried before loading in to the mould. Spillage of the inner green tyre paint during the application process is another concern of using water based inner green tyre paint. Sometimes the applied inner green tyre paint will come in contact with the ‘bead’ area of the green tyre, which may result in damaged tyre after curing or vulcanisation process.
The second type of inner green tyre paint which is used in tyre industry is petroleum solvent based paint. This is an improved version of inner green tyre

paint. This will dry faster after the application process. The invention of this solvent based inner green tyre paint resolves the slow drying issue, but since this material is petroleum solvent based this will create unsafe condition in the shop floor, since the solvent based paint is highly inflammable. The spillage issue is persisting with this solvent based paint.
The solvent utilized for the manufacturing of the inner green tyre paint is a non-renewable natural resource. Moreover, it a highly inflammable substance and the usage of the material can be leads to fire accidents inside the shop floor. Usage of petroleum based solvent increases the material cost also.
PATENT REFERENCES
1. EP38943A3 - OUTSIDE TIRE PAINT
2. US4329265A - Outside tire paint
3. US4325852A - Inside tire paint
4. EP37946A3 - INSIDE TIRE PAINT
5. JP56155254A - OUTSIDE TIRE PAINT AND ITS PREPARATION
6. JP56155253A - INSIDE GREEN TIRE PAINT
7. EP38943A2 - Outside tire paint
8. EP37946A2 - Inside tire paint
9. US4590884A - Portable powder spray system
10. GB905151A - Anti-blemish paints
11. US4253994A - Water-based anti-blemish paint
12. US4285897A - Water-based anti-blemish paint
13. WO2007123285A1 - COATING COMPOSITION FOR GREEN TIRES
14. US20090061099A1 - ROBOTIC TIRE SPRAYING SYSTEM
15. US7943201B2 - Robotic tire spraying system
16. US20130078385A1 - MODULAR TIRE SPRAYING SYSTEM

OBJECT OF THE INVENTION
The objective of the present invention is to overcome the difficulties facing while
using solvent or water based inner green tyre paint in a green tyre.
The issue associated with the water based inner green tyre paint are, slow drying
issue, spillage issue and the contamination issue in the green tyre bead area.
The issue associated with the solvent based paint are the spillage issue, and the
safety issue due to the inflammable nature of the petroleum based solvent present
in the inner green tyre paint.
BRIEF SUMMARY OF THE INVENTION
The present invention related to the material, method and apparatus for the application of inner green tyre lube powder after building process. More precisely the material used of the dusting application inside the green tyre, apparatus which is used for the inner green tyre lube application and method for the inner green tyre lube powder application. This invention enables to eliminate the petroleum based solvent and/or water based inner green tyre paint.
The material used for the inner green tyre lube application is a mixture of silicate minerals and or its equivalents thereof, clay minerals and or its equivalents thereof, and liquid polymerised siloxane and or its equivalents thereof. The apparatus used for the dusting application consists of powder lube storage unit, powder unit and a dusting unit.
The application method consists of storage of the pre-prepared lube powder in tank at a specified temperature and the fluidisation unit to apply the same to the green tyre. The powder application is occurring through a nozzle in an enclose condition to avoid any spillage. The excess powder is then collected to the dust collector unit.

STATEMENT OF INVENTION
Accordingly, the present invention relates to an apparatus for inner green tyre lube application comprising of:
a green tyre (1);
plurality of pneumatic cylinder (2, 7) for compressibly holding said green tyre in position;
a storage tank (9) containing pre-prepared lube powder under specified temperature;
a heating element (6) provided at bottom of said storage tank (9) for pre-heating the lube powder to specified temperature;
a closed powder unit (4) which receives said lube powder from the storage tank (9);
an airline pipe (3) connected from said powder unit (4) to a dust collector (8) through said green tyre (8); said airline pipe being provided with a nozzle (11) in an enclosed portion of said green tyre (1); and said airline pipe carry compressed gases along with the lube powder, which is sprayed through said nozzle in the enclosed portion (10) for applying to the inner sides of the green tyre (1); and
said dust collector (8) collects the excess lube powder.
The pneumatic cylinder enables the movement of their side cover to arrest the leakage of the lubricant powder during the powder application process.
A method of inner green tyre lube powder application comprising steps of :
storing of pre-prepared lube powder in a storage tank;
pre-heating of the lube powder in the storage tank at a specified temperatures using a heating element (6);
passing the pre-heated lube powder through the air line pipes (3) having a nozzle (11);

spraying the pre-heated lube powder in a dusting unit (10) through the nozzle (11) to the inner portion of green tyre; and
collecting the excess lube powder in a dust collector (8);
The specified temperature is selected in the range of 60˚C to 120˚C.
A material used for inner green tyre lube application comprising:
a mixture of silicate minerals and or its equivalents thereof; clay minerals and or its equivalents thereof, and liquid polymerised siloxane and or its equivalents thereof.
The mixture of silicate minerals and or its equivalents thereof is in the range of 0 to 60%, the clay minerals and or its equivalents thereof is in the range of 0 to 60%, and the liquid polymerised siloxane and or its equivalents thereof is in the range of 0 to 40%.
The material as claimed in claim 4 having properties of quick drying, does not spill, not inflammable and renewal resource.
BRIEF DESCRIPTION OF THE FIGURES
In accordance to this invention the figures are described as follows:
Figure 1 shows the side view of the drawing of the said invention. Figure 2 shows the aerial view of the drawing of the said invention.
DETAILED DESCRIPTION OF THE INVENTION
Figure 1 represents the side view of the drawing of the said invention. Numeric ‘1’ in figure 1 represents the ‘green tyre’.

Tyre building is the process of assembling all pre-prepared components onto a tire building drum. Tire-building machines can be manually operated or fully automatic. All the components are assembled in the tyre building machine to form a final product, which is ready for vulcanisation called ‘green tyre’. Green refers to the un cured or vulcanised state.
The main components are “Bead” refers to wire bundles formed on a wire wrapping machine. The bundles are then formed into rings, and the rings are covered with rubber.
The term “Ply and carcass” refers to strips of cloth-like fabric that are covered with rubber. Each strip of rubberized fabric is used to form a layer called a ply in the tire body and the entire fabric structure called carcass.
The term “Tread and Side Wall” refers to the rubber for the tire tread and sidewalls travels from the batch mixer to another type of processing machine called an extruder. In the extruder, the batch is further mixed and heated and is then forced out through a die—a shaped orifice—to form a layer of rubber, which is called Tread and Side wall.
Numeric ‘2’ in figure 1 represents the ‘pneumatic cylinder’ which is mechanical device which uses the power of compressed gas to operate. The pluralities of pneumatic cylinder (2) are used to compressibly hold the green tyre (1). The pneumatic cylinder (2) enables the movement of the side cover to arrest the leakage of the lubricant powder during the powder application process.
Numeric ‘3’ in figure 1 and figure 2 represents the air line pipe which helps to fluidise the lubricant powder before the application process. The air line pipes (3) are made up of metal and/or metal alloy and/or PVC, but not limited to the same. One can envisage other similar materials or the same kind connecting means that would achieve the same function. This air line pipe is connected to a lubricant

powder tank (40 and from the tank it takes the lubricant powder (50 to enable the spraying purpose.
Numeric ‘4’ in figure 1 and figure 2 represents powder unit, which is the storage space for the pre-warmed powder which is ready for the spraying purpose. Numeric ‘5’ in figure 1 represents the powder which is stored in the storage tank under specified temperature. The specified temperature is selected in the range of 60˚C to 120˚C.
Numeric ‘6’ in figure 1 and figure 2 represents the powder heating coil, or heating element or the like. One can envisage other similar heating sources that would achieve the same function. The heating coil (6) keeps the pre-prepared powder in the tank in a moisture free condition. Temperature increase will increase the kinetic energy of the lubricant powder mixture and which enables the smooth flow as well as the sticking tendency to the green tyre inner surface. This will enable a uniform distribution of the lubricant powder throughout the inner sides of the green tyre.
Numeric ‘7’ in figure 1 and figure 2 represents the pneumatic cylinders, which enables the smooth movement of the dusting unit.
Numeric ‘8’ in figure 1 represents the line to a dust collector. The excess lubricant powder which is sprayed during the time of application process is collected to this dust collector unit.
Numeric ‘9’ in figure 2 represents the powder storage unit. This unit is a closed container in which the pre-prepared lubricant powder is stored under specified temperatures.
Numeric ‘10’ in figure 2 represents the dusting unit where the lubricant powder spray operation happens.

The material used for the inner green tyre lube application is a mixture of silicate minerals and or its equivalents thereof, clay minerals and or its equivalents thereof, and liquid polymerised siloxane and or its equivalents thereof. The mixture of silicate minerals and or its equivalents thereof is in the range of 0 to 60%; the clay minerals and or its equivalents thereof is in the range of 0 to 90%, and the liquid polymerised siloxane and or its equivalents thereof is in the range of 0 to 40%. The Clay mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2, and its derivatives from 0 to 90%. The phyllosilicate minerals and closely related materials with a basic formulation AB2-3(X, Si)4O10(O, F, OH)2 and its derivatives from 0 to 60%. The liquid polymerized siloxane with organic side chains; polymeric organosilicon such as polydimethylsiloxane and/or similar materials from 0 to 40%.
The apparatus used for the dusting application consists of powder lube storage unit (10), powder unit (4) and a dusting unit (10). The apparatus for inner green tyre lube application mainly comprises of: the green tyre (1), plurality of pneumatic cylinder (2, 7) for compressibly holding said green tyre in position, the storage tank (9) containing pre-prepared, lube powder under specified temperature in the range of 60˚C to 120˚C, the heating element (6) provided at bottom of said storage tank (9) for pre-heating the lube powder to specified temperature, a closed powder unit (4) which receives said lube powder from the storage tank (9), and an airline pipe connected from said powder unit (4) to the dust collector (8) through the green tyre (8); The airline pipe being provided with a nozzle made of metal and/or metal alloys and or PVC and/or any similar materials (11) in an enclosed portion of said green tyre (1). The airline pipe carry compressed gases along with the lube powder, which is sprayed through said nozzle in the enclosed portion (10) for applying to the inner sides of the green tyre (1); and the dust collector (8) collects the excess lube powder.

The application method consists of storage of the pre-prepared lube powder in tank at a specified temperature in the range of 60˚C to 120˚C and the fluidisation unit to apply the same to the green tyre. The powder application is occurring through the nozzle in an enclose condition to avoid any spillage. The excess powder is then collected to the dust collector unit. The method of inner green tyre lube powder application comprising steps of : storing of pre-prepared lube powder in a storage tank; pre-heating of the lube powder in the storage tank at a specified temperature using a heating element (6); passing the pre-heated lube powder through the air line pipes (3) having the nozzle (11); spraying the pre-heated lube powder in the dusting unit (10) through the nozzle (11) to the inner portion of green tyre; and collecting the excess lube powder in the dust collector (8).
TECHNICAL SOLUTION
To solve the problems mentioned above, the present invention is helping to eliminate the chances of spillage of the lubricant material in the floor. The present invention is an enclosed unit, the dusting unit is enclosed. The pneumatic cylinders enable to close the sides of the green tyre before the inner lube powder application. This will prevent the spillage of the material used. The shields provided in the sides of the cylinders helps in this. The excess lubricant powder which comes during the application process will be collected to a dust collector. The excess lubricant material which is collected in the dust collector can be used further during the preparation of the mixture. The present invention enables uniform and efficient application of the lubricant powder inside the green tyre. The pre-heating of the lubricant powder mixture enables the smooth flow of the lubricant powder, by reducing the activation energy of the powder, which will help in the smooth flow of the lubricant powder.
Very high drying time during water based inner green tyre paint usage time is fully eliminated by the present invention. In the case of a solvent based inner green tyre paint the drying time is less compared to water based inner green tyre

paint, but the spillage phenomenon persists. This invention enable the spillage free shop floor by the lubricant material. Flowing tendency of the water or solvent based inner green tyre paints results in defective tyres. Any foreign material coming near the bead are can results in defect to the cured tyre. The present invention eliminates the chances of defect from inner lube application. The present invention ensures uniform coating of the lubricant powder throughout the inner green tyre.
Petroleum based solvent is a fire hazard, the present invention eliminates the usage of the Petroleum based solvent usage. More over the materials used in the present invention is more eco-friendly and non-carcinogenic. This will reduce the carbon foot print.
The materials used in this invention are more cost effective compared to the conventional water or solvent based inner green tyre paint.
PART LIST

FIGURE PART NUMBER PART DESCRIPTION
1 1 Green Tyre
1 2 Pneumatic Cylinder
1 3 Airline
1 4 Powder Unit
1 5 Powder
1 6 Powder Heating coil
1 7 Pneumatic cylinders
1 8 Line to dust collector
2 3 Airline
2 4 Powder Unit
2 6 Powder Heating coil

2 9 Powder Storage Tank
2 1 10 11 Dusting unit Nozzle

We Claim:
1. An apparatus for inner green tyre lube application comprising of:
a green tyre (1);
plurality of pneumatic cylinder (2, 7) for compressibly holding said green tyre in position;
a storage tank (9) containing pre-prepared, lube powder under specified temperature;
a heating element (6) provided at bottom of said storage tank (9) for pre-heating the lube powder to specified temperature;
a closed powder unit (4) which receives said lube powder from the storage tank (9);
an airline pipe (3) connected from said powder unit (4) to a dust collector (8) through said green tyre (8); said airline pipe being provided with a nozzle (11) in an enclosed portion of said green tyre (1); and said airline pipe carry compressed gases along with the lube powder, which is sprayed through said nozzle in the enclosed portion (10) for applying to the inner sides of the green tyre (1); and
said dust collector (8) collects the excess lube powder.
2. The apparatus as claimed in claim 1, wherein said pneumatic cylinder enables the movement of their side cover to arrest the leakage of the lubricant powder during the powder application process.
3. A method of inner green tyre lube powder application comprising steps of :
storing of pre-prepared lube powder in a storage tank;
pre-heating of the lube powder in the storage tank at a specified temperature using a heating element (6);
passing the pre-heated lube powder through the air line pipes (3) having a nozzle (11);

spraying the pre-heated lube powder in a dusting unit (10) through the nozzle (11) to the inner portion of green tyre; and
collecting the excess lube powder in a dust collector (8).
4. The method as claimed in 3, wherein said specified temperature is selected in the range of 60˚C to 120˚C.
5. A material used for inner green tyre lube application comprising:
a mixture of silicate minerals and or its equivalents thereof;
clay minerals and or its equivalents thereof; and
liquid polymerised siloxane and or its equivalents thereof.
6. The material as claimed in claim 5, wherein said mixture of silicate minerals
and or its equivalents thereof is in the range of 0 to 60%, clay minerals and or its
equivalents thereof is in the range of 0 to 60%, and said liquid polymerised
siloxane and or its equivalents thereof is in the range of 0 to 40%.
7. The material as claimed in claim 4 having properties of quick drying, non
spilling, non inflammable and renewal material.