Ultrahigh-crimpness PET (Polyethylene Terephthalate) polyester fiber and preparation method thereof

• Main Authors: DONG QINXIA, MA RENHE
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The invention provides an ultrahigh-crimpness PET polyester fiber and a preparation method thereof.The preparation method comprises the steps that a solution spinning technology is adopted, PET, PBT and PTT raw materials are in a molten state higher than the melting point of the PET, PBT and PTT raw materials to form a stable spinning solution, then the spinning solution enters a spinning manifold through a spinning pipeline, extrusion forming is conducted through a spinneret plate, cooling is conducted through circular blowing, and semi-finished product fibers are formed; and then carrying out stretching and heat setting post-treatment procedures to obtain the ultrahigh-crimpness PET polyester fiber. According to the ultrahigh-crimpness PET polyester fiber and the preparation method thereof disclosed by the invention, the ultrahigh-crimpness PET polyester fiber prepared by the preparation method has permanent three-dimensional crimpness and excellent fluffy rebound resilience, so that a fabric can be endowed