| 摘要 |
A filter cloth 3 for a bag filter type dust collector comprising: a woven core fabric 1 and a web 2 of synthetic fiber arranged on each surface of the core fabric; the core fabric and the webs being closely entwined to form a filter cloth by needling; each of the webs comprising synthetic fiber filaments having a thickness of 0.5 to 1.5 denier; the webs being such as to provide a total weight of 350 to 450 g/m<2> for the core fabric and the webs; at least one of the surfaces of the filter cloth being subjected to a smoothing treatment; said filter cloth having, through said needling and said smoothing, a thickness of 0.8 to 1.2 mm, an average micro-pore diameter of 10 to 20 mu m, a void ratio of 70 to 80%, and a permeability of 10 to 15 cc/cm<2>/sec at a pressure difference of 12.7 mmAq. <IMAGE> |
