How is PTFE sterile filtration breathable membrane produced?
PTFE sterile filtration breathable membrane is a material with a microporous structure that allows gas to penetrate and prevents liquids and microorganisms from penetrating. It is usually manufactured using the stretch blown film method (Tenter frame process).
After preliminary processing and screening, the polytetrafluoroethylene resin is cut into small pieces and put into a special melt extruder. At high temperatures, the PTFE resin begins to melt and is extruded from the extrusion port onto the steel plate, forming a film with a thickness of approximately 10-20 microns.
The film is then passed through a device called a “tension frame”, which washes and stretches it in water, turning it into a film of the desired size and shape. , and naturally formed into a small pore structure. This creates a PTFE membrane in which the void and pore size can be controlled by the amount of processing and stretching performed.
Specific processing is then performed to adjust or control the size and number of micropores. These treatments may include oxidation, glow discharge, plasma treatment, carbonization, electron beam irradiation, etc.
The manufacturing of PTFE sterile filtration breathable membrane requires strict hygienic environment and process control to ensure that it has a high degree of purity and microorganisms. Pore structure stability. Throughout the production process, manufacturers need to take measures to avoid contamination by impurities and affect the growth of microporous structures.
In short, PTFE sterile filtration breathable membrane is a material with a microporous structure manufactured by the stretch blown film method. It has a high degree of purity, stable microporous structure and excellent filtration effect. Due to its wide application in fields such as medicine, food, semiconductor and environmental protection, manufacturers need to take measures to ensure the hygienic environment and process control level of their production processes to ensure product quality and reliability. Interested parties are welcome to enter the store and contact us.
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