玻璃纤维膨体砂滤材其纬纱经过部分或全部膨化纱组成由于纱线蓬松，覆盖能力强，透气性好，过滤效率较平幅过滤布高，除尘效率可达99.3%。过滤速度在0.6-0.8米/分。广泛应用在反吹风滤袋器中。
Bulky Yarn Glass fiber felt partly or wholly combined by bulky yarn silk. Bulky have such features as fluffy, wide cover, good air permeability，high filtration efficiency  reach 99.3%, filtration speed reach to 0.6 -0.8m/min. Widely used in blow black bag filter.
适用于：水泥，炭黑，钢铁，冶金，石灰窑，燃煤等。
Application to : cement, carbon black, steel, metallurgy, limekiln, coal-fired and others.