Method of extruding sausage sleeves of at least partial collagen, extrusion head and extruded collagen sleeves

Method of extruding sleeves of collagen or a collagen comprising mixture for encasing sausages, comprising the successive method steps:

• A) feeding a collagen fluid to an extrusion head;
• B) guiding the collagen fluid through the extrusion head;
• C) discharging the collagen fluid from the extrusion head;
• wherein during processing step B) the collagen fluid is transported between two rotatable and co-operating jackets which co-operating jackets are rotated in opposite directions, characterised in that the counter rotating jackets are rotated each with a rotation speed of 150-300 rpm.