the invention relates to a method and to a device for producing strand - shaped goods in the form of small bands , fiber strands , monofilaments , or films , which are extruded from a polymer melt . after cooling in a cooling bath , a thermal treatment occurs between rolling feed units , wherein the goods are brought into contact with a hot medium . in order to be able to perform an individual thermal treatment depending on the thermoplastic material , the hot medium is provided optionally in the form of hot air or hot water according to the invention . for this purpose , the heating apparatus is formed from a forced - air oven and a water bath apparatus , which can be optionally activated to thermally treat the goods .