A method of regulating the composition of the cellulose-containing
extrusion solution in the production of cellulosic molded articles,
whereby (a) cellulose is mixed with an aqueous amine oxide solution; (b)
the mixture is converted to the extrusion solution by evaporation of
water in vacuo at an elevated temperature and by input of shearing
energy; (c) the extrusion solution is extruded, forming the cellulosic
molded article, and is coagulated in a coagulation bath, and (d) the
resulting molded article is washed to remove the residual amine oxide,
characterized in that in step (a) the cellulose/amine oxide ratio is kept
at a predetermined level by preregulation, and the water content of the
extrusion solution is kept at a predetermined level by a main regulation
after leaving step (b). This method allows accurate regulation of the
composition of the solution.