Introduction： The PTFE filter membrane for wrapping hollow fiber is polytetrafluoroethylene raw material through the transverse biaxial stretching process to form a multi-porous structure of the film. It has the characteristics of small deformation, high precision, large flow rate and difficult deformation during winding, so that the tubular filter membrane can realize the surface filtration, at the same time, it can reduce the occurrence of micropore blockage and flow attenuation.
