Apparatus and method for treatment of yarn in package form

摘要

An apparatus for treating textile yarn in package form is disclosed having a kier for supporting yarn packages for treatment therein, a pump connected to the kier for pumping treating liquor to the kier to treat yarn packages supported therein, an expansion tank connected to the kier for receiving treating liquor from the kier and connected to the pump for passage of treating liquor from the expansion tank to the pump for recirculation to the kier, a device for supporting yarn packages in the expansion tank, valving operable for alternatively using the expansion tank as a kier and the kier as an expansion tank. The kiers and expansion tank are of differing capacities to accommodate varying load sizes at minimum liquor ratios. The heat exchangers are also of differing capacities for more efficient operation of the system.