MANUFACTURING METHOD FOR POLYESTER DIFFERENT SHRINKAGE MIX SPUN YARN

摘要

PURPOSE: A manufacturing method for a polyester different shrinkage mix spun yarn is provided to air-interlace after doubling a high and a low shrinkage yarn for simplifying manufacturing process and saving manufacturing cost. CONSTITUTION: A manufacturing method for a polyester different shrinkage mix spun yarn comprises: heat treating a yarn with a condensed state for revealing a characteristic of a high contraction; heat treating the other yarn with a stretched state for revealing a characteristic of a low contraction; and air confounded treating(11, 13) after doubling the two yarn speeds(4a) of the high shrinkage and the low shrinkage.