Method for extruding a homogeneous polymer composition, which has a degree of gelation of 60% to 100%, an elongation at break of at least 200%, and a tensile strength of at least 10 N/mm 2, from an uncompounded polyvinyl chloride, characterized in that the quantity of energy introduced into the polymer composition within the method, as indicated by the specific energy input, is 0.03 to 0.20 kWh/kg, more particularly 0.04 to 0.16 kWh/kg, the polymer composition consisting of 30 to 80 wt% of polyvinyl chloride prepared by suspension polymerization, 0.5 - 5 wt% of a stabilizing additive, 0 - 40 wt% of a solid constituent, and 5 - 40 wt% of a plasticizer, liquid at room temperature, for the polyvinyl chloride, where the figures in wt% are based in each case on the total weight of the polymer composition, with an extrusion apparatus having at least one rotor, which has at least three kneading and/or mixing zones and is capable of both transporting and mixing the mixture, into which polyvinyl chloride is fed in uncompounded form, and where the method comprises the steps of feeding the polyvinyl chloride and stabilizing additive into the extrusion apparatus through a first inlet, which is disposed in the vicinity of the drive unit and adjacent to a first conveying segment section of the at least one rotor; feeding the plasticizer to the polyvinyl chloride mixed with the stabilizing additive through at least two inlets at a distance from one another, the plasticizer being added in at least two portions each of about 30-70 %, based on the total weight of the plasticizer, to the polyvinyl chloride, there being a kneading and/or mixing zone disposed between the addition of the individual portions, working the plasticizer/polyvinyl chloride mixture at a temperature of or above the glass transition temperature of the polyvinyl chloride, the temperature of the mixture not exceeding 150°C, until the plasticizer has been incorporated substantially completely into the polyvinyl chloride, optionally feeding the solid constituent to the polyvinyl chloride mixed with the plasticizer in a section at which at least 80 wt% of the total amount of the plasticizer has been incorporated into the polyvinyl chloride, optionally devolatilizing and extruding the mixture through the extrusion die. 30 to 80 wt% of polyvinyl chloride prepared by suspension polymerization, 0.5 - 5 wt% of a stabilizing additive, 0 - 40 wt% of a solid constituent, and 5 - 40 wt% of a plasticizer, liquid at room temperature, for the polyvinyl chloride, feeding the polyvinyl chloride and stabilizing additive into the extrusion apparatus through a first inlet, which is disposed in the vicinity of the drive unit and adjacent to a first conveying segment section of the at least one rotor; feeding the plasticizer to the polyvinyl chloride mixed with the stabilizing additive through at least two inlets at a distance from one another, the plasticizer being added in at least two portions each of about 30-70 %, based on the total weight of the plasticizer, to the polyvinyl chloride, there being a kneading and/or mixing zone disposed between the addition of the individual portions, working the plasticizer/polyvinyl chloride mixture at a temperature of or above the glass transition temperature of the polyvinyl chloride, the temperature of the mixture not exceeding 150°C, until the plasticizer has been incorporated substantially completely into the polyvinyl chloride, optionally feeding the solid constituent to the polyvinyl chloride mixed with the plasticizer in a section at which at least 80 wt% of the total amount of the plasticizer has been incorporated into the polyvinyl chloride, optionally devolatilizing and extruding the mixture through the extrusion die.