This product has the class of ordinary felt cloth unique porosity, permeability, dust, high efficiency, long life, because of its moderate temperature levels up to 150 ° C, acid and alkalinity is moderate and has very good abrasion resistance, as a variety of felt class filter. Surface treatment in accordance with the different requirements of the mining conditions, singeing or calendering or coating. 
 Material polyester fiber, polyester yarn 
 Weight (g / ㎡) 450 500 550 600 
 Thickness (mm) 1.4 1.7 1.8 1.9 
 Breaking strength (as to) (N / 5 × 20cm) 1000 1040 1100 1140 
 Breaking strength (zonal) (N / 5 × 20cm) 1100 1250 1270 1270 
 Elongation at break (warp) (%) <35 
 Elongation at break (zonal) (%) <55 
 Use temperature (connection) (° C) 130 130 130 130 
 Use temperature (instantaneous) (° C) 150 150 150 150 
 Permeability (m3 / m / min) 13.8 12.6 11.4 10.2 
 Acid strong strong 
 Acid in the in