Item 

Index

20-15

30-22

40-28

50-35

60-42

80-56

100-70

vertical breaking strength≥(KN/M)

20

30

40

50

60

80

100

Horizontal breaking strength≥(KN/M)

15

22

28

35

42

56

70

longitude and latitude breaking strength ≤(%)

28

trapezoidtearstrength(longitudinal)≥(KN)

0.3

0.45

0.5

0.6

0.75

1.0

1.2

bursting strength≥(KN)

1.6

2.4

3.2

4

4.8

6.0

7.5

Vertical permeability coefficient(cm/s)

10-1  ~10-4

Effective aperture090(095)mm

0.08-0.5

Basic weight in unit(g/m2)

120

160

200

240

280

340

400

Quality error in unit area%

±10