webs are formed
webs are formed :-
1-Random – In this method the spreading and laying of fibres is carried out by controlled air currents, sometimes called isotropic structures, that produce a fabric that has equal strength in all directions.
2-Cross- directional – In this method two layers of fibres are laid at right angles to each other using cross lappers. The fabric produced is almost equal in strength in both crosswise and lengthwise direction.
3-Oriented web or unidirectional structures- where the fibres are parallel to the longitudinal axis. In fabric form, the lengthwise direction is stronger than the crosswise direction. (38)