How to Choose the Vulcanized Splicing Core Rubber for Belts? Key Considerations for Core Rubber Selection

Industrial conveyor belts, as wear-prone components, are prone to various issues during operation due to carrying materials, being scraped by cleaners and rollers, as well as enduring strong tension and diverse stresses. High-quality adhesive materials must be used when splicing belts to ensure the integrity of the joints.

To better ensure the quality of belt joints, enterprises often opt for the vulcanization method. This method offers high joint strength, stable performance, and consistent overall structure, making it particularly suitable for medium to high-strength joint repairs. Naturally, the joint results are also highly reliable.

The core rubber for belt joints is used to fill the areas where the original belt rubber layer has been stripped in the joint, providing adhesion and grip between the belt. This requires the core rubber to possess excellent resistance to media, acid and alkali, as well as flexibility. The core rubber integrates seamlessly with the core layer, ensuring consistent structural integrity and strength of the joint.
Generally speaking, the selection of rubber materials for belt vulcanization splices should adhere to the principle that the vulcanized material should be as close as possible to the original belt rubber. Of course, achieving this is not particularly difficult nowadays—simply choosing a versatile core rubber material will suffice. When it comes to versatile core rubber, the CVUL hot vulcanization splice core rubber must be mentioned.

The hot vulcanized core rubber is uniformly dense, with a density of 1.3g/mm³, exhibiting excellent tensile strength and elongation at break. After undergoing high-temperature vulcanization at 145°C for 40 minutes under pressure, it becomes a mature rubber with high strength, strong bonding properties, and good flexibility. It can tightly bond with the fabric layer of the belt core or steel wire rope core, resulting in naturally strong adhesion.

The hot vulcanization splicing process for belts is complex. In addition to selecting high-quality core rubber, it also requires the coordination of surface rubber, adhesive, and the operation by professional construction personnel to achieve optimal performance.