Rubber Roller Coating Process

Dec. 22, 2022

Rubber roll cover processing in general means that the customer provides the rubber roll core or the rubber roll factory processes the core itself, then the core is covered with rubber, vulcanized, polished, etc. The rubber roller is processed to the required size, color, hardness, etc. according to the customer's requirements. The rubber roller processing and covering need to go through several processes.


1. Clean the core of the rubber roller. If it is a new roller core, you need to clean the oil and dirt on the core surface with a cleaning agent. If it is an old rubber roller core, you need to remove the outer layer of the old rubber roller and clean the remaining rubber on the core surface with a cleaning agent.


2. Rough treatment on the core surface. Roughen the surface of the core to increase the bonding area between the surface of the core and the cover rubber.


3. Sand blasting treatment. The roughly treated core will be sandblasted. Sandblasting will choose different nature of sand according to the material of the rubber roller core to be treated. Sandblasting is to make the surface of the rubber roller rougher so that the rubber and the core can be bonded better after the glue is wrapped.

Nitrile Rubber Roller

4. Glue wrapping. After the above treatment, the rubber roller cores are covered with glue according to the customer's requirements. The different materials of the cover rubber will meet different requirements, for example, the good oil resistance of the polyurethane, the good wear resistance and pressure resistance of the polyurethane, and the good high-temperature resistance of the silicone.


5. Roll vulcanization. It takes 10-15 hours to vulcanize the rubber roller after wrapping. After the vulcanization, the core of the rubber roller and the cover rubber will be closely bonded, and a cover rubber roller will be formed.


6. Roller polishing. According to the size and shape of the customer's requirements, the roller will be polished. If some customers have high requirements on the surface of rubber rollers, they need to use a CNC grinder to polish the rubber rollers with the mirror surface.


After the above 6 processes, the rubber roller processing and production are completed.


What are the performance characteristics of rubber rollers?


1. Excellent resistance to ozone aging, oxygen aging, light aging, and climate aging. After vulcanization, the rubber is exposed to outdoor sunlight for several years in a free state, and there is no significant change in performance.

2. High and low-temperature resistance. A rubber roller is a kind of heat-resistant rubber roller. Among all kinds of rubber, it has the widest working temperature range (-100 degrees to 300 degrees).

Positioning Roller

3. Excellent electrical insulation performance. The electrical insulation performance of rubber rollers after vulcanization is less in moisture, water, or temperature rise, and the silica generated after burning is still an insulator, which can ensure that electrical equipment continues to work until maintenance.

4. The rubber roller has the properties of oil resistance, radiation resistance, and combustion resistance at the same time.

5. High-pressure resistance number and good recovery of deformation.

6. Made by exclusive special vulcanization process, longer life span.

7. First-class elasticity and good toughness.

8. Fast thermal conductivity, excellent thermal conductivity.

9. Good abrasion resistance, easy to cut.


We are a rubber roller manufacturer. If you have any queries about rollers, please feel free to contact us.