Plants are living beings indispensable in the life of men, studying their uses and seeking to clarify the transformation of fibers into yarns through chemical and synthetic mechanisms is the primary role of this book entitled "Technology of textiles 6th", this book explains to us at length and broadly the transformations of textile fibers into yarns.This book is designed to help finalist students of cutting and sewing technique as well as students of G1 ISAM and other departments to enrich their academic course, it will also help any assistant, supervisor or professor in the scientific research and good dispensing of the textile technology course.