All polyurethane PU circular belt can be used only when it is connected into a ring. Therefore, the quality of polyurethane PU circular belt joint directly affects the service life of polyurethane conveyor belt and whether the conveyor line can run smoothly and smoothly. The common methods of polyurethane conveyor belt joints are mechanical joints, cold bonded joints, hot vulcanized joints, etc.
Usually refers to the use of belt buckle joint, which is convenient and economical, but the efficiency of the joint is low and easy to damage, which has an impact on the service life of polyurethane conveyor belt products. In PVC and PVG whole core flame retardant polyurethane conveyor belt joints, the joint method is generally used for products below 8 belts. The strength of the polyurethane conveyor belt is 28%-45% by fastening.
Cold adhesive joint
That is to say, cold adhesive is used for joints. This kind of joint method is more efficient and economical than mechanical joint. It should be able to have better joint. But in practice, it is not very stable because the process conditions are difficult to grasp and the quality of adhesives has a great influence on the joint. The bonding strength of polyurethane conveyor belt with cold adhesive is 40%-55%.
Thermally vulcanized joint
Practice has proved that it is an ideal joint method, which has high joint efficiency, stability, long service life and easy to grasp. However, there are some shortcomings, such as troublesome process, high cost and long joint time. The mechanical thermal vulcanization bonding is equivalent to 60%-80% of the strength of the polyurethane conveyor belt itself.