All conveyor belts must be spliced into a loop before they can be put into actual use, so splicing is a critical part of the preparation process. The quality of the splice directly affects the service life of the conveyor belt and whether the conveyor line can operate smoothly and efficiently. 

Qingdao Tailiu Rubber Co., Ltd. primarily manufactures steel-cord conveyor belts, high-incline sidewall conveyor belts, sidewall belts, steel-cord hoisting conveyor belts, steel mesh conveyor belts, polyester conveyor belts, steel-cord bucket elevator conveyor belts, nylon conveyor belts, cotton canvas conveyor belts, steel cable conveyor belts, cover belts, patterned conveyor belts, flame-resistant metal mesh-core conveyor belts, coiled pipe conveyor belts, filter belts, integral-core flame-retardant conveyor belts, flame-retardant conveyor belts, as well as conveyor belts with special properties such as heat resistance, flame resistance, cold resistance, and acid and alkali resistance.

All conveyor belts must be spliced into a continuous loop for practical use, so belt splicing is a critical preparatory step. The quality of the splice directly affects the service life of the conveyor belt and whether the conveyor line can operate smoothly and stably.

1. Splicing Methods

Common methods for splicing conveyor belts include mechanical splicing, cold bonding, and hot vulcanization.

Mechanical splicing generally refers to the use of belt clips. This method is convenient, quick, and relatively economical; however, it is inefficient and prone to damage, which can affect the service life of the conveyor belt. For PVC and PVG solid-core flame-retardant and antistatic conveyor belts, this splicing method is generally used for products rated below Grade 8.

Cold bonding splicing involves using a cold-curing adhesive to join the belts. This method is more efficient than mechanical splicing and is also relatively economical, and it should produce good splicing results. However, in practice, it is not very consistent because the process conditions are difficult to control, and the quality of the adhesive has a significant impact on the splice.

Hot vulcanization splicing has been proven in practice to be an ideal method. It ensures high splicing efficiency, is very consistent, provides a long splice life, and is easy to master. However, it has drawbacks such as a complicated process, high costs, and lengthy splicing times.

2. Splicing of Multi-ply Conveyor Belts

Depending on requirements, splicing methods such as mechanical splicing, cold bonding, and hot vulcanization can be used. Generally, cold bonding and hot vulcanization splices employ a stepped structure.

3. Splicing of PVC and PVG Solid-Core Flame-Retardant Conveyor Belts

Due to the unique structure of solid-core belts, splicing is relatively difficult; therefore, mechanical splicing—specifically belt buckle splicing—is most commonly used. However, for belts rated at Grade 8 or higher, hot vulcanization splicing is generally employed to ensure a reliable splice. The splice structure is always a finger-type splice. The hot vulcanization splicing process for PVC and PVG solid-core flame-retardant conveyor belts is relatively complex and places high demands on equipment.

4. Joints for Steel-Cord Conveyor Belts

Joints for steel-cord conveyor belts are the most technically complex of all conveyor belt joints; not only is the process relatively complex, but the design also involves numerous dimensional parameters. Different grades of products require different joint structures; please refer to the GB 9770 standard for specific details.