FIELD: process engineering.
SUBSTANCE: invention relates to separation. Separator has main part of nonwoven material. Note here that said main part is provided with coating. Note here that said coating comprises filler particles and cellulose, said coating containing resilient particles of binder from organic polymers. Note also that filler particles are inorganic filler particles. Filler particles and organic binder resilient particles are bonded by said cellulose. Said separator differs from known designs in that cellulose represents derivatives of cellulose that feature chain length of at least 200 alternating links. Besides, said coating contains non-ionic surfactant in amount of up to 5% per coating solid substance.
EFFECT: perfected design, high permeability.
15 cl, 7 dwg, 6 ex
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