In the molding process of polytetrafluoroethylene bubble-dot film, the double stretching or stretching processing method is mostly used abroad.
Polytetrafluoroethylene can be stretched at room temperature to 327°C, that is, the stretching below the melting point is carried out in a high elastic state.
Stretching at low temperatures will cause the film to break, making stretching impossible.
When it is higher than 327°C, the crystalline state between polytetrafluoroethylene molecules changes to amorphous, and the network structure cannot be obtained well, so the general stretching temperature is between 40°C and 327°C.
Polytetrafluoroethylene bubble point film has excellent breathability, corrosion resistance, aging resistance, high temperature resistance and other properties.
According to the usage requirements, the pore diameter can be between 0.1-10um, the thickness can be between 2-100um, the porosity can reach 50%–80%, and there are up to hundreds of millions of micropores per square centimeter.
The product has high filtration efficiency and can meet the filtration efficiency level requirements of sub-high efficiency, high efficiency and ultra high efficiency air filters.
It is a manufacturer of environmentally friendly polytetrafluoroethylene (PTFE) membrane materials that specializes in R&D, production and sales.
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The optimized combination of speed ratio, pressure ratio, operating temperature and other key parameters of PTFE bubble-point membrane technology can realize online control of air permeability, thickness and void ratio according to the ratio and pore-forming medium. Meet the different requirements you need.
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