FORM 2
THE PATENTS ACT, 1970
(39 of 1970)

&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See section 10, rule 13)
1. Title of the invention: A CURING METHOD FOR AN AUTOMOBILE TYRE
2. Applicant(s)
NAME NATIONALITY ADDRESS
CEAT LIMITED Indian RPG HOUSE, 463, Dr. Annie Besant Road, Worli, Mumbai -Maharashtra 400030, India
3. Preamble to the description
COMPLETE SPECIFICATION
The following specification particularly describes the invention and the manner in which it
is to be performed.

BACKGROUND
[0001] Tyres are a crucial component of an automobile. In an automobile,
a tyre may be responsible for a plurality of functions. A tyre may be required to conform to a plurality of industry and safety standards, owing to which, the steps involved in any tyre manufacturing process may be considered crucial. A plurality of different components may be designed and attached together to form a preliminary uncured tyre, which is referred to as green tyre. The processed green tyre, once obtained, may then be cured in a curing press, as a final step for tyre manufacturing process. During curing, the green tyre may be subjected to high pressure in a mould, and heat may be applied, which in turn enables the chemical reactions between the rubber and other materials of the tyre, and subsequently, the tyre may be imprinted with tread pattern and side wall letter engraving.
BRIEF DESCRIPTION OF THE DRAWINGS
[0002] The following detailed description references the drawings,
wherein:
[0003] FIG. 1 is a diagram depicting a conventional curing apparatus for
curing the tyre during tyre manufacturing process;
[0004] FIG. 2 is a diagram depicting an example curing apparatus for
curing the tyre, during tyre manufacturing process, as per an implementation of the present subject matter; and
[0005] FIG. 3 is a flowchart of a method for optimizing the curing process,
and implementing the optimized curing process in a curing apparatus for curing a tyre, as per an implementation of the present subject matter.
[0006] Throughout the drawings, identical reference numbers designate
similar, but not necessarily identical elements. The figures are not necessarily

to scale, and the size of some parts may be exaggerated to more clearly illustrate the example shown. Moreover, the drawings provide examples and/or implementations consistent with the description; however, the description is not limited to the examples and/or implementations provided in the drawings.
DETAILED DESCRIPTION
[0007] Vehicles have become an essential requirement for private
individuals as well as for commercial purposes. As would be generally understood, a tyre is one of the most essential and critical component of a vehicle. During vehicle operation, a tyre is the only source of contact between the vehicle and the road, owing to which, a plurality of dynamics of the vehicle operation may be controlled by the tyre. The tyres may be responsible for guiding and maintaining the alignment and movement of a vehicle while driving. In addition, the tyres contribute to the safety of the vehicle while carrying loads, and when the automobile is to be halted by application of brakes.
[0008] Owing to the complexity of roles performed by the tyres in a vehicle,
it may be crucial for tyre manufacturers to conform to the adequate quality parameters during any tyre manufacturing process. Conventionally, rubber, along with other materials, may be used as a raw material for manufacturing the tyres. A plurality of different components may be designed and assembled together, using a variety of techniques which involve both chemical and physical processes. For example, the raw materials may be processed into different components to form a toroidal shaped preliminary uncured tyre, which is also referred to as a green tyre.
[0009] Green tyre, once obtained, may then be cured when subjected to a
curing processes in a curing press. As would be understood, curing may refer to a process of applying pressure and heat energy to the green tyre in a

toroidal mould cavity in the curing press. The heat energy thus applied enable chemical reactions between the rubber and other materials, to obtain its final shape. Thereafter, a tread pattern may be imprinted on the final manufactured tyre.
[0010] The curing press may include a toroidal mould cavity to
accommodate the green tyre. The internal walls of the toroidal mould cavity, may be equipped with an internal protruded pattern, corresponding to the required tread pattern on the final manufactured tyre. A bladder may be vertically suspended along the axis of the toroidal mould, for accommodating and circulating a volume of curing media. The curing media may include, but not limited to, a liquid or gaseous substance at an elevated predefined temperature and pressure. The curing media may be circulated inside the curing bladder, to increase its temperature, and transfer the heat to the green tyre. As a result of circulation of curing media in the curing bladder, the curing bladder may get inflated, which may further result in the inflated bladder exerting a substantial amount of radially outward physical pressure on the green tyre, towards the internal walls of toroidal mould cavity of the curing press. As a result of application of substantial amount of pressure on the green tyre from the inflated curing bladder towards the internal walls of the toroidal mould cavity, the green tyre may get pressed against the internal protruded tread pattern of the walls of the curing press, and thereby, may get imprinted with tread pattern and side wall letter engraving. The heat energy provided by the curing media enables the chemical reactions between rubber and various other materials, thereby binding them, and enhancing the strength of the manufactured tyre.
[0011] As would be understood, a curing process may be dependent on a
plurality of parameters. Examples of such curing parameters may include, but are not limited to, the temperature of the curing press, the time for which the curing media may be circulated in the curing bladder, and the pressure at which the curing media may be supplied. The value of the curing parameters

may be selected based on the material of the tyre to be cured and the type of tyre to be cured. For example, a tyre to be used in a 2-wheeler light motor vehicle, may be cured for a specific time period, at a certain temperature and pressure. For another example, a tyre to be used in a heavy weight truck may be cured for a longer time period, at a higher temperature, thereby imparting more strength to the manufactured tyre.
[0012] However, the conventional methodologies and techniques
designed for curing, and the selection of the corresponding curing parameters for the said techniques, may not be suitable for all materials. With the advancements and development of polymeric materials like nylon-6 in the manufacturing of tyres, the conventional curing techniques and parameters, however, may result in wastage of time employed for curing, and resources like curing media, heat energy employed for curing. For example, the temperature and pressure required for curing nylon-6 may be lesser than the temperature and pressure requirements of the conventional curing process. As a result, the tyre may be unnecessarily over-cured, thereby, resulting in wastage of curing media, and heat energy.
[0013] The challenges and drawbacks of such systems is described in
conjunction with FIG. 1. FIG. 1 depicts a diagram of a conventional curing apparatus 100 for implementing the conventional curing process during tyre manufacturing process. The curing apparatus 100 may include an inlet port 104 and an outlet port 112, coupled to the curing press 102, well known to a person skilled in the art, and a plurality of recovery line(s) 120 coupled to the outlet port 112. As described in FIG. 1, the conventional curing process implemented in the conventional curing apparatus may include supplying a curing media, i.e., high pressure steam (referred to as 106 in FIG. 1) at an elevated temperature through the inlet port 104 to the curing bladder in the curing press, for a dead-end period. Dead-end period may be referred to as a duration of time, for which, the curing media may be continuously supplied to the curing bladder through the inlet port, and the outlet port may be closed

for the said time duration, thereby, allowing the curing media to be circulated throughout the curing bladder for a specific time duration.
[0014] Circulating of curing media results in transfer of heat to the green
tyre. As a result, the green tyre may reach a curing temperature which in turn enables the chemical reactions between various components of the tyre. Thereafter, a certain volume of cold water (indicated as flow 114 in FIG.1) may be supplied through the outlet port 112, and circulated through the curing bladder. The cold water may be supplied at a pressure, similar to that of the high pressure steam, to partially cool the tyre in the toroidal mould. A fixed volume of cold water may be supplied, to maintain a uniform cooling process. Cold water, once circulated in the curing bladder for a certain amount of time, may then be returned (referred to as 110 in FIG. 1) from the inlet port 104.
[0015] This may be done, owing to the inability to precisely control the
temperature of the curing bladder, at all contact points between the tyre and the curing bladder. The process of supplying cold water may attribute to partially cool the tyre during curing process, so as to provide uniform heating through the curing bladder, to the green tyre in the toroidal mould cavity. Circulation of cold water may maintain a curing temperature corresponding to the desired curing temperature of the material of the corresponding tyre, and compensate the excess and conventional temperature and pressure parameters, thereby ensuring adequate quality of the manufactured tyre.
[0016] Not only this may result in wastage of volume of curing media
being supplied in the curing bladder, but also may result in wastage of heat energy during over-curing of the tyre, and subsequently, wastage of cold water circulated for maintaining the desired temperature of the curing press.
[0017] Thereafter, the curing media, i.e., high pressure steam may be
discharged (referred to as 118 in FIG. 1) from the outlet port 112 using one of the plurality of recovery line(s) 120, followed by draining the main bladder (referred to as 116 in FIG.1) from the outlet port, and creating a vacuum in

the curing bladder (referred to as 108 in FIG.1) from the inlet port. This may be done to ensure complete removal of curing media from the curing bladder. The existing and conventional approaches for curing a tyre may result in a plurality of disadvantages as discussed above.
[0018] To this end, approaches for optimizing the curing process, and
thereafter, implementing the optimized curing process in a curing apparatus, used during tyre manufacturing process are described. A green tyre may be cured, as a final step for tyre manufacturing process, using an optimized tyre curing process. As per an implementation of the present subject matter, the curing process may be optimized, corresponding to the type and material of the tyre to be cured. The material of the tyre used for curing, as well as the utility of the manufactured tyre, may account to the factors for determining the optimization of the curing process. The curing process as optimized, as described in the present subject matter, may not only increase the strength, quality and reliability of the manufactured tyre, but may also conserve the resources while performing the curing process. Further, as per another implementation of the present subject matter, the curing apparatus for implementing the optimized curing process may also be modified, so as to further increase the efficiency.
[0019] In one example, a set of physio-chemical properties of a material of
the tyre to be cured, may be determined. Thereafter, a set of optimal curing parameters, corresponding to the determined properties of the tyre may be identified. Examples of optimal curing parameters, may include, but are not limited to, the temperature of the curing process, the pressure at which the curing media may be supplied and circulated through the curing bladder, and the time employed for curing the tyre. In one example, the optimal curing parameters may be identified using blow point testing. It may be noted that other such parameters may also be included within the scope of present subject matter.
[0020] Returning to the present example, the optimal curing parameters

are correlated with a set of physio-chemical properties of the material of the tyre to be cured. In an example, the curing parameters may correspond to the type of the tyre to be cured. For example, the tyres cured for the purpose of use in 2-wheelers may be subjected to a lesser pressure and temperature, as compared to the temperature and pressure requirements for a tyre to be used in a heavy load truck. For another example, a tyre made of a polymeric material may require less temperature and time to be cured, as compared to a tyre made of rubber.
[0021] With the identification of curing parameters, the curing process may
be optimized, as per the identified curing parameters. Optimization of the curing process may refer to the selection and modification of curing temperature, pressure, and time of the curing process. Once the curing process is optimized, it may then be implemented in a curing apparatus for curing a tyre. It should be noted that, the curing apparatus, may be modified, for implementing the optimized curing process, as per an implementation of the present subject matter. The existing and conventional curing apparatus, may be inefficient while implementing the optimized curing process, as per the present subject matter.
[0022] As per an implementation of the present subject matter, the curing
press may include a toroidal mould cavity, for accommodating a green tyre. A curing bladder, may be positioned, along the axis of the toroidal mould cavity. Further, the curing press may include an inlet port, and an outlet port. Furthermore, a differential pressure control valve may be coupled to the inlet port, and a controlling unit may be coupled to the outlet port.
[0023] In operation, the green tyre may be placed in the toroidal mould
cavity of the curing apparatus. Thereafter, a volume of curing media at a curing temperature may be supplied and circulated through the curing apparatus from the inlet port, at a first operational pressure for first dead-end period. Thereafter, the volume of curing media may be circulated at a second different operational pressure for second dead-end period. The differential pressure

control valve, coupled to the inlet port, may provide the curing media at a first and second operational pressures, from amongst a range of pressures. Further, the controlling unit, coupled to the outlet port, may control the drain of the curing media from the curing apparatus to control outward flow of curing media for one of a first dead-end period and a second dead-end period. As a result of these steps, a cured tyre may be obtained, and thereafter, the volume of curing media may be caused to discharge from the curing bladder, through the outlet port.
[0024] These, and other aspects, are described herein with reference to
the accompanying FIGS. 2-3. It should be noted that the description and figures relate to certain example, and should not be construed as a limitation to the present subject matter. It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and embodiments of the present subject matter, as well as specific examples, are intended to encompass equivalents thereof.
[0025] FIG. 2 is a diagram depicting an example curing apparatus, for
curing the tyre, during tyre manufacturing process, as per an implementation of the present subject matter. The curing apparatus 200 may include a curing press 202, well known to a person skilled in the art. The curing press 202 may include a toroidal mould cavity (not shown in FIG. 2) for accommodating a green tyre. Further, a curing bladder (not shown in FIG. 2), may be positioned along the axis of the toroidal mould cavity for accommodating a volume of curing media. The curing media, when circulated in the curing bladder at an elevated temperature and pressure, may inflate the curing bladder, and increase its temperature. As a result, the heat is transferred to the green tyre, and the green tyre is heated to a curing temperature. This may enable the chemical reactions to take place between rubber and other materials of the green tyre. Furthermore, inflation of the curing bladder may result in exertion

of a substantial amount of radially outward physical pressure on the green tyre, towards the internal walls of the toroidal mould cavity of the curing press.
[0026] Furthermore, an inlet port 204 and an outlet port 210 may be
coupled to the curing press 202 and employed for the purpose of supply and discharge of a plurality of media to and from the curing press 202 respectively. The curing apparatus further includes a different pressure control valve 206, coupled to the inlet port 204, for providing a range of pressure(s) and choosing the operational pressure(s) amongst the range of pressures of the curing media (referred to as 208 in FIG. 2) to be supplied to the curing press 202 via the inlet port 204. The operational pressures, i.e., first and second operational pressure, may correspond to the identified optimal curing pressure. More specifically, the operational pressures, may be chosen amongst a range of pressure(s) by the differential pressure control valve, which in turn, further corresponds to the value of identified pressure, at which the optimized curing process may take place. The curing apparatus, furthermore includes a controlling unit (not shown in FIG. 2), to control the draining of the curing media from the curing apparatus to control outward flow of curing media for a first and second dead-end periods.
[0027] As per an implementation of the present subject matter, the
optimized curing process may be implemented in the curing press 202 for curing the tyre, during tyre manufacturing process. It should be noted, that the curing press 202 is in such a way, that inlet port 204 may only support a plurality of media, to be supplied to the curing press 202. Likewise, the outlet port 210 may only allow a plurality of media to be discharged from the curing press 202, using a plurality of recovery line(s) 218.
[0028] In operation, a set of physio-chemical properties of the material of
the tyre to be cured may be determined. Thereafter, corresponding to the determined properties of the material of the tyre, a set of optimal curing parameters may be identified, for optimizing the curing process. The curing press 202, may then implement the optimized curing process, as per an

implementation of the present subject matter.
[0029] A green tyre may be placed in the toroidal mould cavity of the curing
press. Thereafter, a curing media, high pressure steam (referred to as 208 in FIG.2) may be supplied at a first operational pressure through the inlet port 204. As described previously, the operational pressure may correspond to a value of identified optimal pressure, further corresponding to determined physio-chemical properties of the material of the tyre to be cured. Thereafter, the controlling unit (not shown in FIG. 2) may be used to shut off the outlet port 210 and the curing media may be allowed to circulate through the curing bladder for a first dead-end period. Specifically, the controlling unit may be used to control the outward flow of the curing media from the curing apparatus. In one example, the controlling unit may be an outward stop valve.
[0030] Returning to the present example, thereafter, the curing media, i.e.,
high pressure steam, may be supplied at a second different operational pressure through the inlet port 204, and again, the controlling unit may shut off the outlet port 210 for a second dead-end period, and as a result, the curing media may be allowed to circulate through the curing bladder for a second dead-end period. The differential pressure control valve 206, may control the first and second operational pressures of the curing media, from amongst a range of pressures. In an example, the curing media may be supplied and allowed to circulate through the curing bladder at a first operational pressure of 12 bar, followed by second operational pressure of 8 bar.
[0031] The process of supplying the curing media at an elevated
temperature, and a first and second operational pressures, and allowing the same to circulate through the curing bladder, may inflate the curing bladder and increase its temperature. As a result, the heat may be transferred to the green tyre, thereby, enabling the chemical reactions between rubber and other materials of the tyre. Further, the inflation of curing bladder may exert a substantial amount of radially outwards physical pressure on the green tyre towards the internal walls of the toroidal mould cavity of the curing press.

[0032] The internal walls of the toroidal mould cavity of the curing press
may be equipped with an internal protruded tread pattern. As a result of application of a substantial amount of radially outwards physical pressure on the green tyre, the green tyre may be pressed against the internal protruded tread pattern of the internal walls of the toroidal mould cavity of the curing press, and thereby, may get imprinted with tread pattern and side wall letter engraving. Afterwards, the controlling unit may allow the curing media to discharge from the curing bladder (referred to as 216 in FIG. 2) through the outlet port. Thereafter, a vacuum may be created in the curing bladder, ensuring complete removal of curing media from the bladder (referred to as 212 and 214 in FIG. 2).
[0033] The tyre obtained after curing, may then be passed on for various
quality checks, as a final step for tyre manufacturing process. This in conjunction with further details, will be described in FIG. 3.
[0034] FIG. 3 is a flowchart of a method 300 for optimizing the curing
process, and thereafter, implementing the optimized curing process in a curing apparatus, used during tyre manufacturing process, as per an implementation of the present subject matter. The order in which the method 300 is described is not intended to be construed as a limitation, and any number of the described method blocks may be combined in any order to implement the aforementioned method, or an alternative method. Further, it should be noted that, although, the method 300 is described below with reference to the curing apparatus 200 as described above, other suitable systems for the execution of these methods can also be utilized. Additionally, implementation of this method is not limited to such examples.
[0035] At block 302, a set of physio-chemical of a material of a tyre to be
cured may be determined. As per an implementation of the present subject matter, curing process, used during tyre manufacturing, may be optimized, and a tyre may be cured using the optimized curing process. Specifically, the optimized curing process may be implemented in a curing apparatus, for

curing the tyre. Returning to the block 302, the optimization of curing process may correspond to the material of the tyre. A set of physio-chemical properties of a tyre to be cured may be determined. In one example, the tyre to be cured may be made of a polymeric material like nylon-6. In another example, the tyre to be cured may be a 2-wheeler tyre.
[0036] At block 304, based on the determined properties of the material of
the tyre to be cured, a set of optimal curing parameters may be identified. For example, curing requirements for a polymeric material may be different from those of a natural rubber. For another example, curing requirements of a 2-wheeler tyre, may be different from the curing requirements of a heavy load truck tyre, owing to the variety of functions performed by each tyre. Based on the determined physio-chemical properties of the tyre to be cured, a set of optimal curing parameters may be identified. Examples of curing parameters may include, but are not limited to curing temperature, curing pressure and curing time. In one example, blow point testing may be used for identification of optimal curing parameters. Blow point testing may identify the optimal curing parameters, i.e., the minimum temperature, pressure, and curing time for the material of the tyre, so as to reduce unnecessary over-curing of the tyre, and thereby, improve productivity. However, other techniques may also be used for identifying the optimal curing parameters, without deviating from the scope of the present subject matter.
[0037] At block 306, a curing process may be optimized, based on the
identified set of optimal curing parameters. For example, the temperature and curing time requirements of the curing apparatus 202 may be set, as per the determined optimal curing parameters. For another example, the differential pressure control valve 206 may be programmed to control the pressure, and provide first and second operational pressures from amongst a range of pressures, corresponding to the determined optimal curing pressures.
[0038] At block 308, a green tyre may be placed in a toroidal mould cavity
of a curing apparatus. After optimizing the curing process, as per an

implementation of the present subject matter, the optimized curing apparatus may be implemented in the curing apparatus 202. The curing apparatus 202 may include a toroidal mould cavity, for accommodating a green tyre. Further, a curing bladder, may be suspended vertically along the toroidal mould cavity of the curing apparatus 202. The curing apparatus 202 may further include an inlet port 204, for supplying a volume of curing media (referred to as 208 in FIG. 2) to the curing bladder. A differential pressure control valve 206 may be coupled to the inlet port, for supplying the curing media at first and second operational pressures. In one example, the curing media may be a volume of hot water steam. Furthermore, the curing apparatus 202 may include an outlet port 212, for discharging the volume of curing media from the curing apparatus (referred to as 212-216 in FIG. 2).
[0039] At block 310, a volume of curing media at a curing temperature may
be circulated through a curing bladder of the curing apparatus at a first operational pressure, for first dead-end period. For example, a volume of hot water steam may be supplied (referred to as 208 in FIG. 2) to the curing bladder of the curing apparatus 202 via the inlet port 204. The hot water steam may be supplied at an elevated temperature, referred to as curing temperature, to be circulated in the curing bladder. As described previously, curing temperature, one of the curing parameter, may correspond to the selection of the material and type of the tyre to be cured. In one example, the curing temperature may be chosen around 165º. The volume of hot water stream may be supplied to the curing bladder, at a first operational pressure, corresponding to the identified curing pressure. The differential pressure control valve 206, coupled to the inlet port, may choose the first operational pressure from amongst a range of pressures. In one example, the curing media may be supplied initially, at a first operational pressure of 12 bar.
[0040] Returning to the implementation of the curing process in the curing
apparatus 202, a controlling unit may be coupled to the outlet port, for controlling the outward flow of curing media from the curing apparatus. The

controlling unit may be used to shut off the outlet port, while supplying the volume of hot water steam, for a first dead-end in the curing bladder, and therefore, the curing media may be allowed to circulate in the curing bladder for a specific amount of time. In one example, the controlling unit may be an outward stop valve, coupled to the outlet port.
[0041] At block 312, the volume of curing media may be circulated at a
second operational pressure, through the curing bladder of the curing apparatus for a second dead-end period, such that, the second pressure is different from the first pressure. As described in block 310, the curing media may be circulated at a first operational pressure, for a first dead-end period in the curing bladder. Thereafter, the differential pressure control valve 206 may vary the pressure of the curing media, to a second operational pressure, and may allow the curing media, hot water steam, to again circulate in the curing bladder for a second dead-end period. It should be noted, the outlet port, once shut off, may remain in unchanged position, till the completion of second dead¬end period. In one example, the pressure may be dropped from 12 bar to 8 bar, and the curing media may be allowed to circulate for a specific amount of time in the curing bladder.
[0042] This circulation of curing media at an elevated curing temperature,
may inflate the bladder, and increase its temperature. As a result, the heat may be transferred to the green tyre, as a further result of which, the green tyre may reach a curing temperature which in turn enables the chemical reactions between various components of the tyre. Furthermore, the inflation of curing bladder may exert a substantial amount of radially outwards physical pressure on the green tyre towards the internal walls of the toroidal mould cavity of the curing apparatus 202. The internal walls of the curing apparatus may be equipped with an internal protruded tread pattern, such that, the green tyre when pressed against the pattern on the internal walls of the toroidal mould cavity, may result in imprinting of tread patterns, and side wall letter engraving on the green tyre.

[0043] At block 314, a cured tyre may be obtained. After the circulation of
curing media in the curing bladder, for specified time period, the curing process may get completed, and the tyre may then be allowed to cool down.
[0044] At block 316, the volume of curing media may be caused to
discharge from the curing bladder. For example, the controlling unit, coupled to the outlet port of the curing apparatus, may allow the curing media, a volume of hot water steam, to drain from the curing bladder, via an outlet port 212 (referred to as 216 in FIG. 2). Thereafter, the curing bladder may be allowed to completely drain (referred to as 212 in FIG. 2) and a vacuum may be created in the curing bladder of the curing apparatus 202 (referred to as 214 in FIG. 2) to ensure complete removal of curing media from the curing bladder.
[0045] At block 318, as a final step of the tyre manufacturing process, the
cured tyre may be removed from the toroidal mould cavity of the curing apparatus, and may be then sent further for various quality parameters checking.
[0046] Although examples for the present disclosure have been described
in language specific to structural features and/or methods, it should be understood that the appended claims are not necessarily limited to the specific features or methods described. Rather, the specific features and methods are disclosed and explained as examples of the present disclosure.

I/We Claim:
1. A method for curing a tyre, the method comprising:
determining a set of properties of a material of a tyre to be cured;
identifying a set of optimal curing parameters, corresponding to the determined properties of the material of the tyre;
optimizing a curing process for an inner placed green tyre in a toroidal mould cavity of a curing apparatus, based on the identified set of optimal curing parameters;
circulating a volume of curing media at a curing temperature and a first operational pressure from an inlet port through a curing bladder for first dead-end period;
circulating the volume of curing media at a second operational pressure from the inlet port through the curing bladder for second dead-end period, wherein the second pressure is different from the first pressure;
obtaining a cured tyre; and
causing to discharge the volume of curing media through an outlet port from the curing bladder.
2. The method as claimed in claim 1, wherein the tyre to be cured is a 2-wheeler tyre.
3. The method as claimed in claim 1, wherein the optimal curing parameters are identified using blow point testing.
4. The method as claimed in claim 1, wherein the optimal curing parameters comprise curing temperature, operational pressure and curing time.

5. The method as claimed in claim 1, wherein the curing media is a volume of hot water steam.
6. The method as claimed in claim 1, wherein the curing temperature of the optimized curing process is 165ºC.
7. The method as claimed in claim 1, wherein the operational pressure of the volume of curing media is 12 bar, followed by 8 bar.
8. A curing apparatus for implementing an optimized curing process, the apparatus comprising:
a toroidal mould cavity, wherein the toroidal mould cavity is to accommodate a green tyre;
a curing bladder positioned along the axis of the toroidal mould cavity, wherein the curing bladder is to accommodate a volume of curing media;
an inlet port, wherein the inlet port is to supply the curing media to the curing bladder at a curing temperature and at an operational pressure from amongst a range of pressures;
a differential pressure control valve, coupled to the inlet port, wherein the differential pressure control valve is to control the operational pressure of the curing media;
an outlet port, wherein the outlet port is to drain the curing media from the curing apparatus; and
a controlling unit, coupled to the outlet port, wherein the controlling unit is to control the draining of the curing media from the curing apparatus to control outward flow of curing media for one of a first dead-end period and a second dead-end period.

9. The curing apparatus as claimed in claim 8, wherein the toroidal mould cavity comprise an internal protruded tread pattern.
10. The curing apparatus as claimed in claim 8, wherein the controlling unit is an outward stop valve.