The present invention provides a series of plates for distributing a molten polymer
composition, the series of plates includes at least two plates: a first plate that
includes an upper surface, a lower surface, and a plurality of polymer distribution
channels connecting the upper surface and the lower surface. In certain illustrated
embodiments, the plurality of polymer distribution channels consist essentially
of substantially horizontal channels at one or both the upper surface and lower
surface and substantially linear downwardly sloping channels connecting the substantially
horizontal channels at the upper surface to the substantially horizontal channels
at the lower surface, the upper surface to the substantially horizontal channels
at the lower surface or the substantially horizontal channels at the upper surface
to lower surface; and a second plate that includes an upper surface, a lower surface,
and a plurality of polymer distribution channels connecting the upper surface and
the lower surface wherein the plurality of polymer distribution channels consist
essentially of substantially horizontal channels at one or both the upper surface
and lower surface and substantially linear downwardly sloping channels connecting
the substantially horizontal channels at the upper surface to the substantially
horizontal channels at the lower surface, the upper surface to the substantially
horizontal channels at the lower surface or the substantially horizontal channels
at the upper surface to lower surface.