PTFE high-efficiency filter paper has a fibrillar microporous structure. The porosity of the membrane can reach more than 88% or even higher. Moreover, the membrane has 1.4 billion micropores per square centimeter, with a pore diameter ranging from 0.1um to 0.5um, high-efficiency filter paper has high and low temperature resistance (-200℃-260℃). It will not age, split, discolor, and has strong weather resistance after long-term use.
The basis weight of special filter paper is generally relatively large, with a basis weight of less than 300g/m2 and a small thickness (1.0mm).
Can be processed into filter elements of various shapes and used together with filters.
PTFE high-efficiency filter paper has a basis weight of more than 300g/m2 and a large thickness (5mm). It can be processed into the required size and used with a plate and frame filter.
In the manufacturing process of special filter paper (and cardboard), two contradictory issues must be solved: paper strength (tensile strength, bursting strength) and filtration performance (pore size, filtration time) question.
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