HIGHLY FUNCTIONAL SPUNBONDED FABRIC MADE FROM PARTICLE-CONTAINING FIBRES AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2014 - IPC D04H3/16 

FIELD: chemistry.

SUBSTANCE: described is a functional spunbonded fabric consisting of fibres based on a non-fusible polymer containing one or more functional additives. The fibres are interwoven and interlocked and have different lengths, with ratios greater than 1000 and form a strong composition of nonwoven fabric. The fibres have a mean diameter of 0.1-500 mcm and diameter variations within a fibre and/or among each other of at least 30%. Along with non-fusible polymers, the fibres contain more than 40%, with respect to the total weight of the fibres, of finely distributed functional additives in solid and/or liquid form. The spunbonded fabric is produced from a spinning solution containing the non-fusible polymer dissolved in a solvent and at least one functional additive. The spinning solution is extruded out of a spinneret, and the resulting polymer strands are drawn in the longitudinal direction to form filaments or fibres, stabilised and laid down to form the required material.

EFFECT: spunbonded fabrics can be used, for example, in making clothes, technical textiles or as filters.