Rubber conveyor belt repairing method and seamless joint manufacturing method

- Jul 30, 2019-

Rubber products such as large conveyor belts, tires, cables, rubber rollers, etc. are often scrapped due to local breakage and wear. The rubber bonding repair series can be quickly repaired on site. The repaired coating has the characteristics of wear resistance, corrosion resistance, high strength, high toughness and high elasticity. It is a quick and reliable repair method.


Conveyor belt damage repair


Surface treatment


The worn fabric or the torn rubber is first cut off, and the damaged portion and the area at least 10 cm around it are ground and roughened with a rotating wire brush to form a wool-like surface. Then clean the entire area to be repaired with a cleaning agent.

Rubber conveyor belt

Apply primer


The rubber adhesive is carefully applied to the surface treated area with a bristle brush as a primer to increase the adhesion.


Repair process


In the case of long-distance tearing, a clamping device shall be provided to align the belt along the crack (for the breakage of the penetration, the back side is sealed with tape paper.


When the primer is not sticky, prepare the BD916 rubber repair agent in proportion, and mix it evenly. The prepared BD916 rubber repairing agent was applied to the to-be-polished portion of the brushed primer with a rubber knife.


After curing at 25 ° C for 2 hours, it became an elastomer, and the belt operation was resumed after 12 hours. When the downtime is short or the temperature is lower than 15 °C, it should be heated to 50-60 °C for 3 to 4 hours to fully cure and resume operation.


Making seamless joints


The trapezoidal steps are made according to the thickness of the conveyor belt, and each step overlap is preferably at an angle of 45 degrees, and the width of the overlap is generally equal to the bandwidth.


Use a wire wheel to roughen the bonding surface. The residual rubber on the canvas (or nylon cloth) must be cleaned and cleaned with a cleaning agent.


The prepared rubber adhesive is evenly coated on the bonding surface with a plate brush or a rubber knife. When the film is not sticky, the second coating is applied, and the solvent is volatilized and then coated for the third time. Finally, When the film is not sticky, the bonding is performed at the interface. After bonding, it is preferable to force the joint portion with a heavy steel plate or repeatedly roll it with a round roller several times to remove the air at the bonding point. Note that the joint cannot be moved back and forth after bonding.


Curing at room temperature for 24 hours or room temperature for 2 hours, then heating to about 80 ° C for 3 hours to be put into use.

Rubber conveyor belt