Apparatus and method for forming materials
OwnerFriedrich Wilhelm Ludwig Paul Vollrath, David Philip Knightinventors
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Abstract
An apparatus and method for forming liquid spinning solution into a solid formed product. The liquid spinning solution is passed through a die assembly having a tubular passage having walls formed partly of semipermeable and/or porous material. In operation, draw down of the liquid spinning solution is performed partly within the die assembly. The semipermeable and/or porous material allows parameters, such as the concentration of hydrogen ions, water, salts and low molecular weight constituents, of the spinning solution to be altered as the spinning solution passes through the tubular passage.
Claims41
Apparatus for the formation of extruded materials from a solution, the apparatus comprising a die assembly that includes at least one extrusion orifice as an outlet from said die assembly for said extruded materials;
- wherein in operation draw down of the solution is performed at least partially within said die assembly.
A method of forming an extruded material from a solution using a die assembly, wherein at least part of a draw down process of said solution is performed within the die assembly.
Dependencies are inferred from the claim text.