Membrane/Filter BUSINESS

Hydrogen & Bio Biz

PTFE Separation Membrane

e-PTFE (Expanded-Poly-Terafluoroethylene) is a porous membrane with more than 100 million micro-pores per square centimeter. It has excellent electrical insulation, heat resistance of 260˚C, self-extinguishing, chemical resistance, weather resistance, and lubrication. It is used in high-tech industries.

Filter Industry

1) For liquid filte


TYPE FM 10 FM 20 FM 45 FM 100
thickness(um) 20~40 20~40 20~40 20~40
width(mm) ~520 ~520
Pore size(um) 0.1 0.2 0.45 1.0


Due to the physical and chemical properties of e-PTFE itself, it has good durability and heat resistance as well as excellent filtering performance.


Filters foreign substances contained in liquid substances such as food and beverages, pharmaceuticals, and chemicals.

2) For Air Filter


Particle size(um) 0.3 0.1
Filtering efficiency(%) 99.97 99.999
Usage(Cleanroom) High cleanliness in hospitals, precision processing industries, etc. Ultra cleanliness in semiconductors, LCD industries, etc.


Airfilter made of e-PTFE material not only has superior processability compared to conventional filters, Energy can be saved due to low pressure loss, and since the surface filtration method is adopted, the filtration efficiency is high and the service life is increased by 2-3 times.

Clothing industr


TYPE Unit Value Remark
Type   FM 200 [Single] FM201 [Duo]
thickness(Thickness) µm 25±5 35±5
width mm ≤1,630 ≤1,510
Water resistance (Hydrostatic pressure) mmH2O ≥10,000 ≥10,000 ISO 811
moisture permeability (MVTR) g/m2,24hr ≥ 150,000 ≥ 25,000 JIS L 1099 b1 (potassium acetate method)
moisture permeability resistance (RET) ㎡.Pa/W ≤2.0 ≤4.0 ISO 11092

ePTFE (expanded Poly Tetra Fluoro Ethylene ) Membrane

A porous polymer thin film made by processing fluororesin. The pores of the membrane are smaller than water droplets and larger than water vapor. It provides a waterproof function against water coming in from the outside, and at the same time, it has the characteristic of discharging the sweat vapor generated from the body.


Excellent chemical resistance, non-flammability, weather resistance, heat resistance, low coefficient of friction, and electrical properties.


Outdoor, shoes, gloves, military uniform, firefighting suit, etc.

For general industry Membrane

E-PTFE support for hydrogen fuel cell

It is used as a support that is the core of PEM (Proton Exchange Membrane), an electrolyte membrane for hydrogen fuel cells, and has a high porosity of more than 80% and a thin thickness of less than 15um, yet high tensile strength and durability.

Cable for semiconductor equipment

It is used for robotic cables for semiconductors used in clean rooms that maintain ultra-cleanliness. It has good abrasion resistance and does not generate static electricity, so it is used as the best high-tech material that does not generate even fine dust.

For mobile phone waterproofing

By utilizing the moisture-permeable and waterproof function of the e-PTFE membrane, it is attached to the speaker and microphone of the mobile phone so that the performance of the mobile phone can be protected even if it is submerged in water without compromising the acoustic characteristics.

For car VENT

It is used to prevent fogging of headlights and taillights by using e-PTFE membrane for the headlights and taillights of automobiles to prevent raindrops from entering the lamp and to discharge moisture that came in.

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