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聚四氟乙烯（PTFE) 薄膜表面光滑且耐化學(xué)物質(zhì)，將其覆合到普通過濾材料的表層，起到一次性粉塵層的作用，將粉塵全部截留在膜的表面，實(shí)現(xiàn)表層過濾，又因該膜表面光滑，有極佳的化學(xué)穩(wěn)定性，不老化，又憎水，使截留在表面的粉塵很容易剝落，同時(shí)提高了濾料的使用壽命。
Smooth surface , anti chemical substance, cover it to surface of common filtration material to play a role of disposable dust, keep dust to stay in the surface , to realize the surface filtration. Excellent chemical stability because of enough smooth surface. Because of  no aging and water-hating the surface dust easy to spall. Filter cloth using life extended.
與普通濾料相比，其優(yōu)點(diǎn)有：
1.薄膜孔徑在0.2-3um之間，過濾效率均能達(dá)到99.99%以上，幾乎實(shí)現(xiàn)零排放。清灰后不改變孔隙，除塵效率一直很高。
Film bore diameter between 0.2 to 0.3 um, above 99.99$ filtration efficiency, near to zero emission. No change on pore after cleaning. Always keep high efficiency of dust collection,
2.覆膜濾料在開始使用時(shí)，壓力損失要高于普通濾料，但在投入運(yùn)行后，壓力損失隨時(shí)間的增加變化卻不大，而普通濾料的壓力損失會隨時(shí)間的延長而越來越大。
Pressure loss higher than common filtration material at the beginning. Pressure loss increase as time past , pressure loss of common material will be higher and higher as time passed.

3.普通濾料在使用中粉塵很容易入到內(nèi)部，而且越積越多，直到將孔隙堵死，導(dǎo)致不能繼續(xù)使用。而使用PTFE覆膜濾料，過濾的粉塵很容易從覆膜表面清除，清灰效果好，周期長，使用的清灰壓力強(qiáng)度較低，從而提高了濾料的使用壽命，降低了產(chǎn)品的運(yùn)行費(fèi)用。
Dust easily enter into inside and accumulate more and more till pore blasted that material can not be used any more. But PTFE membrane filtration material is different that dust can be easily removed from surface and long cleaning cycle and cleaning pressure strength lower so that material life time improved, operation cost reduced.
我公司選用優(yōu)質(zhì)PTFE微孔薄膜，與機(jī)織濾料和針刺氈覆合，制成PTFE覆膜濾料，廣泛應(yīng)用于煙氣凈化除塵，粉塵治理及物料回收等領(lǐng)域。
We choose PTFE film with micro pore to cover with weave material and needle felt to produce PTFE membrane filtration material. Widely used in filed of smoking purify, dust control and material recovery.