The waterproof and sound-permeable membrane of the mobile phone handset is a new type of waterproof and breathable membrane material made of polytetrafluoroethylene composite polymer cut by a waterproof and breathable membrane processing factory. The performance of this material is generally outstanding.
The waterproof and breathable membrane is mainly composed of microfiltration membrane, with a pore size between 0.1-10μm.
For waterproof and breathable membranes, water inlet pressure and air permeability are two very important values.
Generally, the two are in a competitive relationship, and high air permeability means low water inlet pressure.
Waterproof and breathable membranes are mainly divided into hydrophobic membranes and oleophobic membranes, and in general, oleophobic membranes are used.
The pore size of the waterproof and sound-permeable membrane of the mobile phone handset is small and uniform, the micropore structure is stable, the porosity can reach 80%~90%, and the filtration accuracy can reach above U15 level, or even reach U17 level.
The surface filtration efficiency reaches 99.9%~99.999%. For some extremely small particles with a diameter of 0.1um-0.3um, it can better prevent fine dust from entering the filter material.
Can operate at a continuous operating temperature of 240°C and an instantaneous temperature of 260°C.
PTFE film manufacturer specializes in the production of waterproof and sound-permeable membranes for mobile phone handsets. It has a full set of advanced production equipment and technology, and also has an advanced clean room and an independent composite slitting workshop to ensure the production quality of PTFE film; the products produced The materials are all imported raw materials, with high uniformity, stable performance, good air permeability, and the filtration efficiency can reach 99.999995%! It can basically meet the filtration efficiency grade requirements of sub-high efficiency, high efficiency and ultra high efficiency filters.
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