Hollow Fiber Membrane
Technology
The Hollow Fiber Membrane: The Heart of Cleansui
In 1970, at a Mitsubishi Rayon (now Mitsubishi Chemical) plant that was developing fibers for filtering water and blood, some polypropylene turned white. Under a microscope, countless pores were found in the walls of the straw-like hollow fibers. This was the origin of the hollow fiber membrane that became the foundation of Cleansui products.
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Pores Discovered in Hollow Fiber Walls
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Hollow Fiber Membrane Successfully Developed
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The World’s First Oxygen Generator
1974 Successful development of hollow fiber membranes
Microscopic observations at the laboratory of the polypropylene whitening phenomenon occurring at the factory revealed countless holes in the walls of straw-like hollow fibers. Therefore, the researcher at that time thought that it could be used as a "filter membrane" and continued his research. The developed hollow fiber membrane filter has become the cornerstone of other products. followed by many
1978 Developed the world's first hollow fiber oxygen concentrator.
Inspired by the whitening effect of hollow fibers, Mitsubishi Rayon (then) succeeded in developing hollow fiber membrane filters. and offered to various industries used as a filter As a result, the medical industry demands the highest level of functionality and safety. Including the field of wastewater treatment is paying attention. Developed in collaboration with medical device manufacturers. The world's first oxygen concentrator equipped with a hollow fiber membrane was introduced. Later, with the development of hollow fiber polyethylene membranes that can be produced without the use of organic solvents. We therefore seriously enter into the medical water treatment business such as dializers and hand washing equipment.
