Melt spinning extrusion head system

Details Melt spinning extrusion head system Melt spinning extrusion head system

2006-03-21

2006-03-21

Del Sole, Joseph S. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

C425S382200, C425S464000

Reexamination Certificate

active

07014442

ABSTRACT:
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.

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