PTFE (polytetrafluoroethylene) membranes are generally processed by methods such as calendering, turning and stretching. Among them, membranes prepared by dispersing PTFE raw materials and stretching methods have good Microporous structure can be used in the field of filtration. PTFE filter membranes processed by the stretching method are divided into flat membranes, hollow fiber membranes and tubular membranes. Depending on the shape and micropore structure of the product, PTFE filter membranes can be used in areas such as air and water purification. PTFE sterilizing filter membrane is a type of PTFE filter membrane, made using a biaxial stretching process.
The pore size of the filter membrane determines the filtration accuracy, so pore size control is very important. The PTFE membrane production process, whether it is a flat membrane or a hollow fiber membrane, is processed by the stretching method. The film-making process during processing affects the microporous structure, mainly including: stretching speed, multiple and temperature, heat setting temperature and time, etc.
Cultivation of microorganisms or cells in modern biopharmaceuticals. In order to ensure good culture of microorganisms or cells, it is necessary to ensure the sterility of the bioreactor. Therefore, the sterilization filtration of the air flowing into the bioreactor and the sterilization ability of the respirator on the bioreactor are very demanding. Therefore, choosing a gas filter with appropriate materials and matching structure is very important for the entire biological fermentation process.
You can choose PTFE sterilizing filter membrane for filtration. This membrane has two categories: hydrophobic and hydrophilic. It can achieve sterility when used for gas filtration, has the characteristics of large flux, temperature resistance, resistance to strong acids and alkalis, and wide chemical applicability. It is suitable for fermentation tanks, carbon dioxide, nitrogen and compressed air. When used for liquid filtration, it can intercept all kinds of phages, small bacteria and particles above 0.2μm, meeting the requirements of HIMA interception experiments.
is a manufacturer specializing in the production of PTFE sterilizing filter membrane materials. We have the characteristics of “uniform, stable, low resistance” in the field of industrial sewage treatment. Features such as high efficiency, long life, customizability, and easy cleaning and maintenance have been accepted and loved by the majority of enterprises. Interested parties can enter the store and contact us.