Abstract: Fibrous casing is manufactured wherein a paper tube is passed downwardly over a mandrel and impregnated with viscose. The interior and exterior sidewalls of the tube are contacted with a coagulating liquid to regenerate cellulose on the tube walls. Spent coagulating liquid is withdrawn from the tube interior by the imposition of a pressure differential on the liquid. Withdrawal of the liquid also causes the walls of the descending tube to be drawn into disadvantageous wiping contact with the mandrel surface. This wiping contact is reduced or substantially eliminated by introducing a gas, e.g., air, at a low positive pressure, into the spent liquid being withdrawn from the tube to form a fluid mixture having a specific gravity less than that of the liquid.

Abstract: This invention relates to an artificial sausage casing and a process for making the casing. In making a regenerated cellulose casing an oxazoline wax is incorporated into viscose in a proportion from about 1-20% by weight of the cellulose content in the viscose, the oxazoline impregnated viscose extruded into a tubular casing, coagulated, and the cellulose regenerated. The casing has excellent handle, flexibility, and peelability from sausages processed therein.