Under what circumstances should the filter mesh be replaced in a PP modified dual-column screen changer?

Production Cycle and Filter Mesh Lifespan:

Generally, the replacement cycle for the filter mesh is between 3 to 6 months, but the specific cycle needs to be adjusted according to the actual situation on the production site. If the raw materials are prone to contamination or the production process has strict requirements, the filter mesh replacement cycle should be shortened.

Filter Mesh Clogging:

Clogging of the filter mesh can lead to an increase in melt pressure and a decrease in flow rate, affecting production efficiency and product quality.

When the filter mesh becomes severely clogged, it needs to be replaced promptly to maintain production continuity and stability.

Filter Mesh Aging and Damage:

The filter mesh is susceptible to aging, deformation, or damage due to high temperatures, high pressure, and melt corrosion.

Once aging or damage to the filter mesh is detected, it should be replaced immediately to avoid adverse effects on production.

Changes in Production Demands:

With changes in production demands, there may be a need to replace the filter mesh with different specifications or materials.

For example, when producing different types of PP modified materials, the appropriate mesh size of the filter mesh should be selected based on requirements.

Precautions for Replacement:

Before replacing the filter mesh, ensure that the power to the granulator is turned off to ensure the safety of the work area.

When replacing the filter mesh, follow the product instructions or manufacturer's guidance to ensure the replacement process is correct and flawless.

After replacement, commission and inspect the equipment to ensure the filter mesh is installed correctly and the equipment operates stably.

In summary, the circumstances for replacing the filter mesh in a PP modified dual-column screen changer involve multiple aspects, and various factors need to be comprehensively considered to ensure smooth production and stable product quality.

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