Item | Weight(g/㎡) | Thickness(μm) | Tensile Strength (N/15mm) | Air Permeability (cc/cm2・sec) | |
MD | CD | ||||
BFN No.1 | 12±2 | 50±10 | 7≦ | 2≦ | 125~235 |
BFN No.2 | 24±3 | 90±15 | 24≦ | 6≦ | 30~110 |
BFN No.3 | 36±4 | 125±20 | 39≦ | 19≦ | 15~65 |
BFN No.4 | 48±5 | 160±25 | 58≦ | 29≦ | 10~50 |
BFN No.5 | 60±6 | 195±30 | 68≦ | 39≦ | 4~36 |
BFN No.6 | 84±8 | 255±40 | 88≦ | 49≦ | 3~23 |
BFN No.7 | 100±10 | 300±40 | 98≦ | 78≦ | 2~22 |