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Hot retreading involves the vulcanisation of a tyre in a mould at a temperature of around 150 °C. The tread and the sidewall veneer of the tyre are made up of non-vulcanised rubber compounds. The shape and tread of the tyre are created in the heating press.
Arguments in favour of hot retreading:
- Suitable for all tyre applications, including car and aircraft tyres.
- Material costs are lower than the more complex products required for precure retreading.
- Hot retreading also allows extensive repairs to be carried out on the tyre carcass (e.g. belt replacement).
- Even bias-ply carcasses can undergo hot retreading without any problems.
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Points to note:
- A separate mould is required for each tread and size. This requires a high level of investment in a range of moulds, which will be need to be regularly updated.
- The production process needs to be designed for large numbers of tyres. This calls for a central production workshop, an extended customer area and therefore brings with it relatively high logistics costs.
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