1、 Overview of Production Process

PTFE sintered filter element is made by sintering PTFE powder at high temperature. The specific production process includes:

Raw material mixing and pressing: Mix PTFE particles with other possible fillers evenly, and then press them into tubular or other desired shapes through an extruder.

Sintering forming: In the sintering furnace, the pressed filter material is heated to above 230 ℃ and pressed under high pressure for a period of time to fuse PTFE particles together, forming a sintered structure with continuous pores.

Cutting and assembly: Cut the sintered filter element into appropriate lengths, and stack, assemble, and fix it to meet different filtration needs.

2、 Filter process analysis

Fluid entry: The fluid (gas or liquid) to be filtered enters the interior of the filter element through the inlet of the filter element.

Filtering process:

Physical interception: Due to the very small pore size of PTFE sintered filter cartridges (ranging from 0.5 microns to 20 microns), these pores can effectively intercept small particles, microorganisms, and other impurities in the fluid.

Surface adsorption: PTFE material has a smooth surface and certain adsorption properties, which can further remove impurities from the fluid.

Deep filtration: Some filter designs may also include multi-layer structures to achieve deeper filtration effects.

Clean fluid discharge: The clean fluid filtered by the filter element is discharged from the outlet of the filter element for subsequent use or treatment.

3、 Filtering characteristics and advantages

Efficient filtration: The PTFE sintered filter cartridge has a filtration efficiency of over 99.99%, effectively removing small particles and microorganisms from fluids.

Chemical stability: PTFE hardly undergoes chemical reactions with other substances, effectively preventing chemical leakage during the filtration process.

Heat resistance: PTFE has excellent heat resistance and can be used for a long time at high temperatures, with a usage temperature of up to 180 ℃.

Corrosion resistance: PTFE has good corrosion resistance and can effectively prevent the corrosion of corrosive substances during the filtration process.

Wear resistance: The surface of PTFE sintered filter element is very smooth and has good wear resistance, which can effectively extend the service life of the filter element.

No "threshing" phenomenon: The filter element is fully sintered under high temperature and high pressure, and there will be no "threshing" phenomenon that pollutes the fluid during use.

Strong resistance to ozone: In the pharmaceutical, water, and food industries, this filter element can resist the erosion of ozone and ensure filtration efficiency.

4、 Application Fields

The PTFE sintered filter element is widely used for filtering liquids and gases in industries such as chemical, pharmaceutical, food, electronics, and water treatment due to its excellent performance characteristics. Especially in situations where high filtration accuracy, high chemical stability, and high heat resistance are required, PTFE sintered filter cartridges are indispensable key components.

The filtration process of PTFE sintered filter element is based on its unique manufacturing technology and material characteristics, achieving efficient filtration through physical interception, surface adsorption, and deep filtration, and has many advantages such as chemical stability, heat resistance, corrosion resistance, and wear resistance.