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In industrial environments, no single coating can "suit all operating conditions"; therefore, corona rollers must be available with a variety of coating options to ensure proper compatibility.

The applicable temperature range for epoxy-coated corona rollers is typically: 80°C to 120°C (for long-term continuous operation) It can withstand approximately 150°C under short-term peak conditions.

Silicone corona rollers are the most common, lowest-cost, and quick-replacement type of corona roller in the industry. Typical lifespan of a silicone corona roller: approximately six months This aligns with the actual operating experience of most factories and is consistent with the material's properties.

Jinhang Machinery is considered one of the leading Chinese manufacturers of high-performance ceramic corona rollers. If your production line requires a highly stable ceramic corona roller that can operate continuously in extreme environments and has a longer lifespan, then Jinhang is your choice.

According to data from Jinhang Machinery, the dielectric strengths of different coatings are approximately as follows: • Silicone corona roller: Approximately 400 inches/kW • Epoxy-coated corona roller: Approximately 500 inches/kW • Ceramic corona roller: Approximately 300 inches/kW

Different materials have different performance requirements for corona rollers. For example, plastic films require higher surface energy, while metal foils require higher cleaning effects. Therefore, before purchasing a corona roller, it is necessary to accurately understand the types of materials that are mainly processed on the company's production line.

Corona roller is a device that uses high voltage to generate corona discharge on the surface of materials, thereby changing the surface properties of materials to enhance their adhesion. It is one of the key components of the corona treatment system, and together with high-voltage power supply, treatment electrode and other components, it constitutes a complete working system.

The role of epoxy-coated corona roller: 1. Provide excellent electrical insulation performance 2. Protect the surface of the material and prevent damage 3. Improve the efficiency and effect of corona treatment 4. Corrosion resistance and extend equipment life

If the corona effect is significantly reduced (such as decreased adhesion of materials, poor adhesion of printing inks, etc.), it often means that the function of the coating has declined. In this case, replacing the coating is a necessary step to restore the treatment effect.

Ceramic rollers are known for their high wear resistance and good insulation properties and are suitable for high-intensity production lines. Its replacement cycle is usually between 18 months and 36 months, depending on the use environment and maintenance conditions.