Base belt buffing machines roughen the bonding surface of the base belt before the sidewalls and cleats are attached. By removing the smooth surface layer and creating a more suitable bonding texture, they help improve adhesion strength during the following bonding process.

Sidewall buffing machines are used to roughen the bonding surface of the sidewall belt before it is attached to the base belt. Roughening the bonding surface helps improve how firmly the sidewall attaches to the base belt.

Cleat buffing machines roughen the bonding surface of the cleat before it is attached to the base belt, helping improve bonding strength in the following step.