After three years research, the R&D team of Wechange Technology has successfully overcome the key technology of nanofiber liquid sterilization filter membrane and filter elements, and developed ethylene vinyl alcohol copolymer (EVOH) nanofiber liquid sterilization filter membrane, syringe filter and pleated filter cartridges.
Until now we have basically completed the core verification of the sterilization membrane and is gradually carrying out the sterilization process verification work of pharmaceutical and food companies. This breakthrough not only marks that our filtration technology has reached a new level, but also brings revolutionary solutions to the pharmaceutical and food industries.
This time we have developed two specifications of EVOH sterilization membranes: 0.22μm pharmaceutical sterilization membrane and 0.45μm food sterilization membrane, designed for pharmaceutical production and food production processes. In addition, sterilization membrane products with other pore sizes can be customized. Compared with existing polymer microporous filtration membranes such as polyethersulfone (PES), EVOH sterilization membrane has the following advantages:
(1) Natural hydrophilic and anti-adhesive properties, which are conducive to the infiltration of drug solutions and food solutions, and are not easy to adhere to organic matter such as proteins.
(2) Based on the principle of fiber stacking, the pores are formed with heterogeneous channels, high porosity, and heterogeneous pores. While intercepting microorganisms, they provide more transport space for fluids. The channels are not easy to be blocked, which can significantly improve the filtration flux.
(3) The fibers are densely stacked and the pore size is more uniform, which is conducive to absolute interception of bacteria.
(4) Pure physical process manufacturing, no organic solvent residue and precipitation, which is conducive to ensuring the purity of drugs and foods.
With the increasing global attention to medical health and food safety, the market demand for sterilization and other microbial filtration membranes is growing. Wuhan Weichen Technology Co., Ltd.'s new products provide new options for the international and domestic sterilization filtration markets. With the further promotion and application of technology, EVOH sterilization filter membrane products will achieve significant market growth in the next few years.
This breakthrough in sterilization filtration membrane technology is not only a reflection of the company's R&D strength, but also a positive response to social responsibility. It is reported that the liquid virus removal membrane developed based on nanofiber membrane manufacturing technology is also in progress and is expected to be manufactured in small batches within 2024. The company will continue to increase R&D investment, promote the transformation of more scientific and technological achievements, and provide downstream customers with safer and more efficient products and services.
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