The retreading process

Today, in Europe, more than one in three tyres used by commercial vehicles is a retreaded tyre.

Bandag has been world leader in cold process retreading for over 50 years. Since 2006 Bandag has been a part of the Bridgestone Corporation Group. Bandag tyres meet the international standards in force and so do ours.

The retreading process

STEP 1: the initial inspection to assess the casing’s safety

STEP 2: the non-destructive inspection controls the invisible elements related to safety. In the new EVWTYRES production unit, the latest machines are used to detect any faults invisible to the naked eye

STEP 3: the detreading re-establishes the tyre’s dimensions and its perfect balance. The process is automated, offering the best results every time

STEP 4: the polishing and filling operations repair and harness the precious casing

STEP 5: the construction (adding the new rolling band) is also made with automated machines, ensuring the maximum precision of the process

STEP 6: the vulcanisation sets the rolling band on the casing

STEP 7: the final inspection verifies safety and the impeccable aspect

Bandag machines- the most modern technology to date

The needle- hole detector is the latest machine which checks and detects any penetrations of the tyre components which might be overlooked at the initial inspection.

The inspection with Bandag’s shearograph is conducted to determine the casing condition. The vacuum difference is used, while lasers measure any potential anomalies (separations / air trapped between the components). The process is carried out in one single step for all the tyre areas, and any potential separations are simulated with an animation for an easier identification.

The detreading and construction processes are completely automatic. These machines ensure the compliance with the best standard for the rolling band application process. Thanks to them, the new tyre will be safe, reliable and will have the best uniformity features.