U-TEX Membran Filters

Particles in um <0,2 <0,4 <0,6 <0,8 <1,0 >1,0
Quantity 800 251 9 0 1 2
% of the quantity 75,3 23,6 0,9 0 0,1 0,2
% of the mass 15,9 38,7 7,5 0 8,2 29,7


The surface filtration After the pre-seperation of the coarse particles the remaining particles will be precipitated according to the principle of the surface filtration. U-Tex PTFE membrane is laminated on the surface of the filter media, which is used for the filter cartridge. The unique microstructure of the U-Tex PTFE membrane consists of millions of fine fibres, which hold back even the smallest particles. Especially during the welding and cutting process superfine particles are generated which are averaged between 0.1 μm and 1.0 μm. They are therefore alveole exchangeable. Especially those particles deposit on the alveole (pulmonary alveoli), reach the blood- stream, can diffuse through the vascular wall and then deposit in the body. Tests of the BGIA for the particle size distribution during the welding process have shown the following results (E308-16).

The result is, that consequently 98.9 % of the particles arise in the region smaller than 0.4 μm which represent (ultra-particulate matter) 54 % of the total volume because of their acuteness. Therefore the precipitation of the particles in the region smaller than 0.4 μm is very important. Usual filters, which come indeed up to category M, reach their limitations at this point. Therefore the effective pore size of the U-Tex® PTFE membrane is that small, that even particles with 0.1 μm already will be filtered up to 92 %. The nearly zero-emission of the U-Tex PTFE membrane is exceeding all current regulations, also those for superfine particles.The U-Tex PTFE membrane filters are therefore the ultimate technology concerning welding and cutting processes. Consequently, the high efficiency membrane guarantees an excellent filtration performance and has got outstanding cleaning characteristics. This is the basic requirement for a long-lasting filter durability at an excellent air purification. These results can not be achieved by cartridges, which are PTFE impregnated nor with standard deep bed filtration filters.