Glass fiber bulking yarn is the continuous glass fiber through the nozzle device of high pressure air bulking, has the strength of continuous long fiber and the fluffiness of short fiber, is hight temperature resistance, corrosion resistance,low thermal conductivity, low volume weight glass fiber deformation yarn. Mainly used to weave a variety of different specifications of filter bulk cloth, thermal insulation bulk cloth, packing, glass fiber tape, sleeve, devorative cloth and other industrial technical fabrics.