Full definition
The process of creating a permanent chemical bond between conveyor belt ends by applying heat, pressure, and vulcanizing agents (cure system in the splice rubber) using a vulcanizing press. This is the highest-strength splice method, achieving 90-100% of original belt breaking strength. Process: (1) prepare belt ends — strip cover rubber, step plies at calculated overlap lengths (textile) or separate and arrange cables (steel cord); (2) apply conditioner, primer, and rubber cement to all bonding surfaces; (3) lay in splice rubber (cover, skim, and breaker fabric); (4) close vulcanizing press to 5-15 bar; (5) heat to 145-155°C (textile) or 140-145°C (steel cord); (6) hold at temperature for 20-45 min (depends on belt thickness); (7) cool under pressure to below 60°C before releasing. Total elapsed time: 4-12 hours depending on belt size and press cooling method. Standards: ISO 15236 (steel cord splice), DIN 22102 (textile), and splice rubber manufacturer specifications (Rema Tip Top, Almex). Requires trained, certified technicians and calibrated equipment.