LAYERED PROTECTIVE MATERIAL Russian patent published in 2013 - IPC D04H1/46 B32B5/22 H01Q17/00 

FIELD: textiles, paper.

SUBSTANCE: fibrous absorber of electromagnetic radiation comprises two inner layers of a mixture of dielectric and electrically conducting carbon fibers which are mechanically fastened to each other by needling. Manufacturing of the absorber is carried out from the mixture of dielectric and electrically conducting carbon fibers, in which carbon fiber is used as electrically conducting carbon fibers. Carbon fiber is used with specific insulation resistance from 1.5·10^-3 to 1.0 Ohm cm, and the deviation from the average value of content of carbon fiber in 1 g of the mixture does not exceed 5% by weight. The absorber additionally comprises two outer layers of rubberised fabric. The absorber has the structure of the inner layers of a mixture of dielectric and electrically conducting carbon fibers fixed by piercing with needles with a density of piercing from above of 5÷20 cm^-2, from below of 20÷100 cm^-2. The absorber layers are made of rubberised fabric, on the edges they are tightly stuck to each other or connected by double-faced adhesive tape.

EFFECT: improving hygienic indicators of garments with volumetric unconnected heat retainers, change in thickness of adequately to change in conditions of the ambient environment, and reduction of specific consumption of valuable heat retainer to obtain the specified thermal insulation properties.

3 cl, 2 dwg, 1 tbl, 3 ex