| abstract |
Use: air purification from germs. The essence of the invention: the material layers are made of fibers containing a chemically bound nitrogen-containing antimicrobial substance in an amount of 0.2-2.5% by weight of a-cellulose, while the linear density of the fibers is 0.17-2.0 tex, and linear the fiber density of the last layer is 2.6–12 times greater than the first, and the surface density of the material is 300-500 g / m2. Layer material m. made of a mixture of fibers of high and low linear densities at a ratio of (10: 90Н90 Ю), respectively. 2 hp f-ly, 2 tab. |