METHOD FOR PRODUCING A HEAT EXCHANGER

The invention relates to a method (1) for producing a heat exchanger (18) with a plurality of medium-conducting heat exchanger tubes (16) made of plastic, which in each case open into a tube plate (15) each at a longitudinal end side. According to the invention, a frame (2) with two needle rows (3) consisting of a plurality of needles (4) which are spaced parallel from one another is first provided in the method. An endless plastic tube (5) is then stretched about the needles (4) meander-like so that the endless plastic tube (5) is wrapped about the needles (5) at wrapping points (6). Here, at least two planes (8) located on top of one another are produced from the endless plastic tube (5) stretched meander-like. Then, the endless plastic tube (5) stretched meander-like is overmoulded with plastic at least at the wrapping points (6) and the tube plates (15) thereby produced. Following this, the endless plastic tube (5) is cut open at the wrapping points (6) on both sides and thus the heat exchanger tubes (16) held in the tube plates (15) produced. The invention also relates to a heat exchanger (18) that is produced in the method (1).