Mold cure versus Precure
MOLD CURE OR HOT PROCESS
Uncured rubber is added to a buffed casing and cured in the mold at temperatures of approximately 150 °C -160 °C.
This temperature allows uncured rubber to flow in the matrix forming the tread design during vulcanization.
PRECURE OR COLD PROCESS
(Bandag Retreading Process)
Precured rubber, usually of high density and available in various tread designs is lined with cushion gum before applying to a buffed casing.
Curing is done in a pressure chamber at low temperature (100 °C) and pressure.
Characteristics of Precure Retreading
- Tread is industrially pre-vulcanized with continuous quality control.
- Lower pressure and temperature during curing brings less stress on the casing.
- Flexibiltity in handling different tyre sizes and brands.
- Original casing remains visible.
Mold cure retreads look better?
An often named advantage of mold-cure retreading is the appearance of the retreaded tyre which is difficult to distinguish from a new tyre. With precure retreads, a bond line can be visible on the side wall.
The look of a retread doesn’t tell you anything about its safety and performance.
The Bandag dealer is trained and equipped to make precure retreads to the highest standards. Additionally, special Bandag tread features like ECL and Miniwing, will further enhance the appearance of the tyre.