| 摘要 |
Preparing solid cellulosic molded bodies or cellulosic films from a solution of cellulose, N-methyl-morpholine-N-oxide and water, comprises extruding the solution through at least one extrusion orifice under pressure, and solidifying the cellulosic molded bodies in a collecting bath, where the solution is guided by an air gap between the extrusion orifices and the collecting bath. The temperature of the solution at the extrusion orifices is 105[deg] C. The pressure difference in the air gap between the pressure of the solution just before the extrusion and after extrusion is 8-40 bar. |
