To provide polyester conjugate yarn yielding stretch-back tendency and resilient feeling as well as feeling of firmness, good in process passableness in higher-order processing steps including yarn processing step and weaving/knitting step and giving high-grade woven/knitted fabrics, thus suitable for sophisticated worsted woven/knitted fabrics. ハリ・コシ感に加え、ストレッチバック性、反発感を有し、かつ糸加工工程、製編織工程などの高次加工工程での工程通過性および織編物にした際の品位が良好で高級梳毛調織編物用に好適なポリエステル系複合糸を提供する。 - 特許庁