Described herein are improvements to processes and equipment for the
manufacture of nonwoven webs useful in numerous applications including
personal care, protective apparel, and industrial products. The fiber
and/or filaments used to form the nonwoven fabric are deposited on a
forming surface in a controlled orientation using application of an
electrostatic charge to the fibers and/or filaments in combination with
directing them to an electrode deflector plate while under the influence
of the charge. The plate may be made up of teeth with a separation and
angle orientation that are selected in accordance with the desired
arrangement of the fibers and/or filaments in the nonwoven web. As a
result, properties of the web such as relative strengths in the machine
direction and cross-machine direction can be controlled. The charging of
the pins is controlled so that not all pins remain at maximum charge
during a cycle with the result that extended run times may be obtained.