Full definition
The process of restoring localized damage (cuts, tears, gouges, punctures, edge damage) in a conveyor belt to prevent further deterioration and extend service life, avoiding premature full belt replacement. Methods: (1) Cold vulcanized patch — clean, buff the damaged area to sound rubber, apply primer + two-component cement, lay in repair rubber, press with stitcher, cure 4-12 hours. For small cuts and surface damage. (2) Hot vulcanized patch — same preparation but cured under heat and pressure using a portable press or heating blanket at 145-150°C for 20-30 min. Stronger and more durable. (3) Sectional repair — replacing a full-width section for severe damage. Materials: Rema Tip Top (TIP TOP repair systems, CM patches), Almex, Beltwin. Timeliness is critical: a small unrepaired cut can propagate under belt tension and loading impact, eventually causing a catastrophic longitudinal rip. Belt inspection programs should identify damage weekly. Per CEMA maintenance guidelines. ROI: a $200 patch repair can prevent a $50,000-500,000 belt replacement.