FIELD: textile, paper.
SUBSTANCE: invention relates to fibrous particle-containing linens, as well as to filtration. Porous sheet product including self-supporting nonwoven linen from polymer particles and sorbate particles in amount at least 80 wt %, tangled in linen and distributed in it evenly enough. Polymer threads have quite large elasticity or quite large crystallisation shrinkage in comparison with similar in thickness homopolymer threads obtained by melt dispersion, so that linen adsorption index A is at least 1.6-104 1/mm of water column. Sheet product is characterised by permeability for gases, sufficient for use in filtration cartridge of individual respiration product.
EFFECT: creation of filtration cartridges which have long service term and adsorption index approaching, and in a number of cases, surpassing adsorption index of compacted carbon layer.
13 cl, 3 tbl, 45 ex, 10 dwg
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