in conjunction with a heat setting apparatus (10) for carpet yarns (17) comprising a pressure chamber (22) having an upper surface with a porous (22d) for forced draught system (33) to provide the heating environment movement throughout the length of the room. of heat setting (10).an improved design of the pressure chamber (22) and the distribution of the heating medium is used to compensate for the temperature gradient up to now in the heat setting chamber (10) and due to the introduction of wire cooling (17) in the chamber (10).the temperature gradient was, at the time of the stoppage of the machine, striations of dye due to the exposure of the thread (17) at relatively lower temperatures at the entry side of the heat setting chamber (10).
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