FIELD: process engineering.
SUBSTANCE: invention relates to filtration. Filtration fabric has air permeability of 100 l/(min·dm2) to 350 l/(min·dm2). Filtration fabric fibers feature thickness of 25 mcm to 35 mcm and contain 50 wt % to 100 wt % of perfluorine alkan ether (PFA). Said filtration fabric has 25 to 35 threads of warp and 15 to 25 filling threads per 1 cm.
EFFECT: higher strength in filtration of acid hot solutions.
10 cl, 3 dwg
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