which supplies a material and has an opening through which the material is extruded to form extruded material a moving surface is positioned adjacent to the opening to receive the extruded material from the opening the method for the extrusion of the material which comprises providing the material in a liquid form extruding the material through an opening to form extruded material and receiving the extruded material on the moving surface application_number US 43319809 A description fig1 shows an extrusion apparatus in accordance with one aspect of the invention the extrusion apparatus comprises a feedstock pump 10 a feedstock reservoir 20 for storing material 25 to be extruded called u201c feedstock u201d a feedstock loading device 30 with a channel 35 and an opening 40 through which the feedstock 25 is passed and a moving surface 50 optionally the reservoir 20 may have permeable or semi permeable walls the feedstock 25 stored in the feedstock reservoir 20 includes chemically synthesized polymers and also macromolecules such as for instance biological materials which can be but are not limited to proteins peptides carbohydrates lipids nucleic acids or any combination or derivative thereof the biological macromolecules may include spidroin fibroin collagen actin elastin or other proteins conferring structural or functional properties to a finished product of the manufacturing process the polymers used in the feedstock 25 are soluble in water organic or inorganic solvents optionally the feedstock loading device 30 is filled with a reactive medium 60 which surrounds the channel 35 the channel 35 may have porous walls to allow at least some components from the reactive medium 60 to pass through the porous walls of the channel 35 and chemically or physically react with the feedstock 25 the components.