How to choose melt filter element?

When selecting a melt filter element, you need to consider multiple factors. Here are some key points:

1. Filtration accuracy: Determine the appropriate accuracy based on the size and properties of impurities in the melt to be filtered. For example, for general polymer melt

filtration, a filtration accuracy of 5-20 microns may be required; while for melt filtration of some optical materials or electronic-grade materials with high precision

requirements, submicron accuracy may be required.

2. Flow requirements: Determine the flow rate that the filter element can meet based on the processing volume of the melt and the requirements of the production

process. To ensure good filtration effect without affecting production efficiency.

3. Pressure resistance: Consider the pressure that the melt is subjected to during the filtration process and select a filter element with sufficient pressure resistance.

In a high-pressure environment, a filter element with better pressure resistance needs to be selected to prevent the filter element from being damaged due to

excessive pressure during use, affecting the filtration effect and production safety.

4. Chemical compatibility: Ensure that the filter element material has good chemical compatibility with the melt to be filtered. Some melts may be corrosive or react

chemically with specific materials, which may cause the performance of the filter element to deteriorate or contaminate the melt.

5. Filter element material: Common melt filter element materials include metal, ceramic and polymer materials. Metal filter elements have high strength, good thermal

conductivity and impact resistance, and are suitable for high temperature, high pressure and high viscosity melt filtration; ceramic filter elements have high filtration

accuracy, good chemical stability and high temperature resistance, but are relatively brittle; polymer filter elements have good flexibility, corrosion resistance and

low cost, and are suitable for some occasions where the filtration accuracy requirements are not extremely high.

6. Service life: The service life of the filter element directly affects the production cost and production efficiency. Choosing a filter element with a longer service life

can reduce the frequency of filter element replacement and reduce maintenance costs. The service life of the filter element depends on multiple factors, including

the nature of the filter medium, the impurity content, the filtration conditions, etc. Generally speaking, a filter element with good quality and reasonable structure will

have a longer service life under the same conditions of use.