The fatigue resistance of cord fabric materials is high for

The pore radius of a filter by bubble point cannot be calculated using the parameter

The frictional resistance of a geo textile can be tested by

The formation of three dimensional pile on the surface of a non-woven backing is

In the following non-woven production process, very high voltage (kV) is applied for production of fibres in

For a fibre density of 0.5-1.5 (Denies) the preferred needle gauge for usage in needle punching is