Conveyor belt belt thermal vulcanization joint process

1. Surface treatment: The conveyor belt joint is made into a beveled stepped cover joint according to the overlap length of 1/2 bandwidth, and then the joint surface is roughened and cleaned, decontaminated and dried with a cleaning agent.
2. Glue coating: evenly coat the surface of the joint and the vulcanized film one or two times, wait for the solution to evaporate until the surface of the adhesive is basically dry, and then apply the vulcanized film to the surface of the joint coated with the vulcanized rubber paste Buffer rubber strips are affixed to the interlayer gap (note that if the glue is not completely dry, it will generate bubbles, which will reduce the performance of the joint).
3. Lamination pressure: After the glue solvent volatilizes until the glue surface is basically dry, glue the two ends together. Laminating from the middle of the conveyor belt to both sides (to facilitate the escape of air from both sides) during lamination, and to make the looseness of the two sides of the film consistent, the joints are aligned in steps and the center line is aligned. After laminating, fully roll to prevent the accumulation of air bubbles, and press the two heating plates on the joints to apply a certain pressure. When pressurizing, be careful not to misalign the joints, and the pressure should be even.
4. Heating vulcanization: Install the vulcanization device. Warm up and pressurize, when the heating plate is heated for 15-25 minutes, press it once to ensure that the joint is under sufficient pressure. When the temperature reaches 80 ℃, the pressure is required to reach 1.0-2.0MPa, then stop the pressurization and continue heating. When the temperature rises to 145 ° C, the timer starts. The constant temperature is between 145 ° C and 150 ° C. After 45 seconds, the heating is stopped immediately, allowing it to cool naturally to room temperature.
5. Trimming. After the joint returns to normal temperature, remove the heating plate, and cut off the residual glue and the rubber above the belt surface to make the joint surface smooth, smooth and clean