be of varying kind such as cellulosic fibers and natural fibers of different kind regenerated cellulose and synthetic fibers of different kind and mixtures of these different fiber types besides substances in powder or particulate form other than fibers may be contained for example superabsorbent particles filling agents bonding agents and the like the forming roll 13 can have a solid or open surface be under a vacuum or not the fiber stream which is laid between the wires 11 12 forms a fibrous web after deaeration and is kept between the wires during the continued transport through the process the fibrous web is mechanically actuated during the transport by means of actuating means 14 at which a redistribution of the fibers as well as a breaking up or possible fiber flocks may occur this can be done due to the fact that the fibrous web at this stage still is unbonded and since it is kept between the two wires the fibers can not be redistributed in an uncontrolled way or even be blown off the wires which would be the case in a conventional air laying process where the fibrous web is fed on top of a flat wire besides dusting is avoided the agitation at this stage does not involve any negative influence on the strength properties of the final product since the bonding of the fibrous web has not yet taken place the mechanical actuation of the fibrous web while held between the wires can be caused in different ways for example by breaking the wires over one or more rolls 15 by air pulses.