1. Tyre inspection
3. Skiving and Repairing
5. Building
7. Final Inspection
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The most technologically advanced method of tyre retreading today, the pre-cured retreading process has proven to be more durable and less prone to degeneration on the tyre casing caused by high temperatures. The high pressure applied onto tread liners during the pressing stage (more than 3,000 dpi) gives pre-cured retreads a higher density that translates to higher durability on coarse terrain.
The pre-cured retreading process involves vulcanizing a moulded rubber tread onto the tyre casing using pressure and heat at a lower temperature (the hot cure process is done between 150 and 180 degree Celsius).
In the pre-cured retreading process, the appropriate tread is selected in strips or full circles of various designs, widths and thicknesses, and is adhered to casing using cushion gum which acts as a bonding layer. The proper tread width is applied to the prepared casing in a straight and even fashion. The tyre is then vulcanized in the curing chamber.
In the curing chamber, tyre casing and the tread liners are pressurized by heated air produced by electricity, steam or a hot liquid, such as oil. The prepared casing, with the new rubber in place, is then placed into the chamber where pressure and temperature, applied over the correct length of time, cure the cushion gum layer and bond the tread to the tyre.
To ensure the quality of each retread and the safety of the users, each tyre received will undergo a stringent tyre inspection before undergoing retreading and, lastly, rolling out like a new tyre again.
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2. Buffing
4. Filing & Cement
6. Curing
8. Final Product
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