公开(公告)号：US06261979B1

公开(公告)日：2001-07-17

申请号：US09319097

申请日：1999-05-28

申请人： Osamu Tanaka ,  Toshio Kusumi ,  Yoshiyuki Shibuya ,  Takeshi Tano

发明人： Osamu Tanaka ,  Toshio Kusumi ,  Yoshiyuki Shibuya ,  Takeshi Tano

IPC分类号： B01D3916

CPC分类号： B29C55/06 ,  B01D67/0027 ,  B01D69/02 ,  B01D69/10 ,  B01D71/36 ,  B01D2323/08 ,  B01D2325/02 ,  B01D2325/20 ,  B29C55/005 ,  B29K2027/18 ,  Y10T428/24694 ,  Y10T428/249978 ,  Y10T442/647

摘要： A filter medium which has an average pore diameter of more than 0.5 &mgr;m, a pressure loss of 2-50 mmH2O determined when air is permeated therethrough at a velocity of flow of 5.3 cm/sec, and a PF value of 18-12, which is calculated in accordance with the following equation on the basis of this pressure loss and a collection efficiency using DOP of a grain size of 0.10-0.12 &mgr;m. PF ⁢   ⁢ value = - log ⁢   ⁢ ( permeability ⁡ ( % ) / 100 ) Pressure ⁢   ⁢ Loss × 100. Permeability (%)=100 −Collection Efficiency (%).

摘要翻译： 平均孔径大于0.5μm的过滤介质，以空气以5.3cm / sec的流速渗透到其中的压力损失为2-50mmH2O，PF值为18-12， 基于该压力损失根据以下等式计算，并且使用粒径为0.10-0.12μm的DOP的收集效率。