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BORETE <br />CH <br />screw conveyor from the hot -washing discharging outlet to the feeding inlet at the lower part <br />of the friction machine, and then is conveyed by feeding screw stem in uniform to the friction <br />machine, and after through friction induced by high-speed rotation of the rotor vane goes <br />from the discharging outlet at the upper part to the dryer. <br />Friction machine blade is expendable, under normal circumstances, after running 600 hours, <br />check the blade wear, and check whether the fastener is loose, when the blade wear to blade <br />fixed link, to replace the blade, and do dynamic balance test. <br />This work section is designed to make up for the deficiency of previous entire -bottle -washing <br />(especially inside -bottle -washing) technology and further remove impurities like viscose <br />clung on the surface of PET bottle with friction machine. The agent liquid used in this work <br />section is in a water circulation system and the flowchart is shown as the following Fig. 20-3: <br />84 <br />