Extrusion of continuous filaments or film from a solution of water with cellulose and a tertiary amine oxide has a structured air drawing action in the air gap after the extrusion channel to increase the material strength

摘要

The invention relates to a method for producing a continuous shaped body (11) from an extrusion solution preferably containing water, cellulose and a tertiary amino oxide. The extrusion solution is extruded through an extrusion channel opening (10) to form a continuous shaped body. The continuous shaped body is guided through an air gap (12) in which it is drawn. In order to increase the loop strength and to reduce the tendency to fibrillate, the invention provides that the average acceleration and/or the average heat flux density is controlled according to predetermined formulas.