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Surface Refining Treatment of Filter Media

机译：过滤介质的表面精制处理

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摘要

In order to improve filtration efficiency and precision of the filter media, two methods of surface refining treatment were presented, which were the co-stretching PTFE micro-porous membrane and foam coating on nonwoven filter media. During the process of co-stretching, the pore diameters and thickness of the membrane were different on the surface. The double-layer PTFE base sheet was simultaneously stretched, which induced the reduction of pore sizes and uniform thickness of the filter media. After foam coating, the pore sizes of nonwoven filter media were reduced to under 10 μm because of the micro-pore membrane formed on the surface. Therefore, filtration efficiency and precision were remarkably increased.
机译：为了提高过滤介质的过滤效率和精度，提出了两种表面精制处理方法，其是非织造过滤介质上的共拉伸PTFE微多孔膜和泡沫涂层。在共拉伸的过程中，膜的孔径和膜的厚度在表面上不同。双层PTFE基片同时拉伸，诱导过滤介质的孔径和均匀厚度的降低。泡沫涂层后，由于在表面上形成的微孔膜，非织造过滤介质的孔径减少到10μm以下。因此，过滤效率和精度显着增加。

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