PTFE film There are two key types: microporous membrane and milling membrane. The big difference between the two is the permeability of microporous membrane, which is caused by double stretching; Milling film is made by CNC lathe drilling, with poor ventilation effect.

teflon The milled film is made of extremely fine pure epoxy resin as raw material, molded into a blank without internal stress/clearance, and processed by a CNC lathe controlled by a computer system. It has high tensile strength and insulation performance, and its application temperature range is up to (- 180 ℃~+250 ℃). It has good water absorption performance. The surface tension of PTFE film with water is very small, and it is hardly stained by any liquid. At the same time, the PTFE milling film can be divided into directional film, semi directional film and non directional film. The directional film and semi directional film are obtained from the PTFE milling film by rolling. The milling film without rolling is the non directional film. The directional film is the one with high rolling level. The rolling depth of the semi directional film is smaller than the directional film.

It is generally divided into the following categories:

Air purification membrane, which can be used for air ash removal, air filtration, etc., is the filter material of various vacuum cleaners, air filters, and oil fume purifiers;

Moisture proof and breathable microporous membrane, which is characterized by good sand prevention and air permeability;

The polytetrafluoroethylene hanging machine membrane, which is coated on various textiles and plates with special processing technology, has become a new type of filtration system. The membrane has a small diameter, a hole making range of about 0.1-0.5 μ m, is evenly distributed, and has a large porosity. While maintaining indoor ventilation, it can filter all dust particles including bacteria, so as to achieve the goal of advanced purification and breathability, It is widely used in pharmaceutical industry, biochemistry, electronic optics, laboratory consumables and other industries.

Polytetrafluoroethylene PTFE microporous film is a kind of microporous film, which is made of polytetrafluoroethylene epoxy resin particles as raw materials, and is developed at the ambient temperature below the melting point. It is a flexible and ductile microporous raw material, with uniform diameter, and has the characteristics of breathable water barrier.