The present invention relates to a method for forming a non-woven fibrous web
comprised of aramid fibers and aramid fibrid which comprises forming a foam furnish
by agitating the fibers and fibrid in a foamed medium, and passing the foam furnish
onto a screen and defoaming the furnish. In effectively agitating the aramid fibers
in the foamed medium, the agitating means is mounted for displacement within the
foamed medium and includes a convex leading surface facing in the direction of
displacement. The leading surface includes upper and lower portions converging
in the direction of displacement to form a generally convex leading surface and
driving means for displacing the agitating means in the direction of displacement
for dispersing and mutually separating the aramid fibers within the foamed medium.
