5 Conveyor Belt Splicing Tips and Procedures
With any conveyor belt, the level of care applied directly impacts performance. For heavy-duty belts, proper inspection, routine maintenance, and high-quality splicing for repairs can help extend service life. Repeated use of low-quality or unsuccessful fixes may reduce productivity and slow operations.
Blair Rubber is a trusted manufacturer of belt splicing materials for Grade I/II, MSHA, neoprene, nitrile, EPDM, and SBR belts.
While there are several different methods of belt splicing, hot vulcanization is widely recommended. Although it is not the least expensive or fastest method, hot vulcanized splicing is often preferred for long-lasting repairs.
Below are several tips to support your next hot vulcanizing belt splicing project.
Early Repair
Identifying potential issues early can make a significant difference in the success of a belt splice. Early detection allows for faster and more manageable repairs. Larger-scale repairs or multiple splices require additional time, effort, and attention to ensure proper execution and to reduce the likelihood of recurring issues.
Regular inspection of conveyor belts can help identify problem areas before they become more serious.
Proper Conditions
A clean work environment and the careful use of appropriate tools and materials are essential for a durable splice.
The conveyor belt should be clean and dry. Remove any oil or grease and rinse the belt with water to eliminate other contaminants.
Avoid attempting repairs in extreme heat or cold, as well as in adverse weather conditions such as rain, snow, or high winds.
Quality Cuts
Proper application begins with precise cuts and careful preparation of the belt ends.
High-quality equipment and attention to detail are critical when cutting conveyor material. The belt should be cut at a bias angle, typically 22 degrees. After cutting, the ends are separated to expose the plies that must be joined. Care should be taken not to damage the plies, as this can result in a less secure splice.
Avoid Overapplication
One of the most common errors in conveyor belt splicing is the overapplication of bonding adhesives such as glue or cement.
A “more is better” approach is not effective. Applying the correct amount of adhesive supports a strong and durable splice.
Do not Rush the Curing Process
Follow the belt manufacturer’s recommended curing times and procedures. Using the correct temperature and duration is essential to achieve a proper cure for the splice.
Reducing cure time or using incorrect temperatures can compromise splice integrity. Monitor time, temperature, and pressure throughout the curing process for best results. Once curing is complete, inspect the repaired area before returning the belt to service.