Polymer ptfe biaxially stretched film
PTFE biaxially oriented film has the characteristics of stable chemical properties, high filtration efficiency, thorough dust cleaning, high temperature resistance, corrosion resistance, etc.
In addition, this membrane is loved by everyone for its wide application range, long life, low energy consumption and low cost.
So it is deeply loved by industries such as medicine, clothing, and industry.
PTFE biaxially stretched film can easily stretch out fibrils and nodes at a lower temperature (35°C), but when the strain reaches 25%, the base tape breaks and the tensile stress decreases rapidly; When the tensile temperature is 90°C, the base tape will break when the strain reaches 100%; when the tensile temperature is above 140°C, even when the strain reaches 300%, the base tape will not break.
Therefore, high-temperature stretching makes the film thinner more easily than low-temperature stretching.
In the transverse stretching direction of the film, in the areas with the same distance from the edge, the pore diameter of the high-temperature stretched film is generally larger; at the same stretching temperature, the pore diameter of the area closer to the edge of the film is also generally higher than that in the middle. area.
The size and thickness of the film pores correspond to each other. In areas where the film thickness is small, the pores will be larger due to the larger fiber elongation, and vice versa.
? Independently developed PTFE films for more than 20 years, with rich experience and mature technology.
The HEPA high-efficiency air filter material has a complete set of technologies, including the preparation and production of the original PTFE film, the patented and innovative film fabric laminating technology, the design and manufacturing of exclusive equipment, and the application development of market products.
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