Key causes of weak joints
Weak vulcanised joints are typically the result of errors during installation rather than material failure.
Incorrect material selection
Using unsuitable bonding agents or rubber compounds reduces splice strength.
Inconsistent pressure application
Uneven pressure during curing creates weak zones within the splice.
Contamination
Dust, moisture, or oils present during installation prevent proper bonding.
Inaccurate splice geometry
Incorrect angles or ply lengths result in stress concentration points.
Impact on performance
Weak joints lead to:
- Reduced belt lifespan
- Increased maintenance frequency
- Higher risk of sudden failure
Joint strength is determined during installation. Precision in preparation and curing is critical to achieving a reliable splice.




