Home > Cases > Content
The metal primer for pulley lagging can increase the adhesive strength ?
Apr 08, 2018

The metal primer for pulley lagging can increase the adhesive strength ?


The metal primer is a surface treating agent which painting on the pulley surface when the pulley need for rubber lagging. Due to the shape and performance is similar to the primer, so it's called metal primer.


For the pulley rubber lagging, why need to painting the metal primer ?

First, the grinding is the most common method to remove dust, adherent material and increase surface roughness. But the adhesive strength for smooth metal surface is not enough, such as the rubber lagging for high strength belt conveyor system.

Second, the surface of the drum will gradually erode, oxadation in wet and acid&alkali contiditons, then the metal surface will lose adhesive and the rubber falls off. 


To ensure that the pulley rubber lagging sheet and metal surface has enough adhesion, and protect the metal from erode. The metal need to treated by chemical solvent except grinding and sand blasting. 


The metal primer for pulley lagging can increase the adhesive strength ?

Yes, the infiltration of subsequent costing glue increased after painting the metal primer, then ensure the adhesive strength of glue.