Manufacturing process of W-section regenerated semi-optical fiber

• Main Authors: LI QIN, DING TUANJIE, HU ZHAOBING, GUAN JUN, MA XIAOFENG, RUAN DONGLIANG, GUO HONG, SUN JINGQI, LI ANQI, TAN XINGMING, QIN CHUNYU, DING KAIRU, DING WEITAO, CHENG QIANG
• Format: Patent
• Language: Chinese; English
• Published: 30.07.2024
• 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 discloses a manufacturing process of W-section regenerated semi-gloss fibers, which comprises the following steps of: melting and extruding crystallized and dried regenerated semi-gloss PET (polyethylene terephthalate) slices by using a screw extruder to obtain a spinning melt; conveying the melt to a spinning manifold, metering the melt by a metering pump, pressing the melt into a spinning assembly for spinning, and performing post-heating, windless area cooling, circular blowing cooling, bundling and oiling, pre-interlacing, drafting and shaping, and winding and forming on formed primary tows to obtain W-section regenerated semi-gloss fibers; during spinning, a spinneret plate of a spinning assembly comprises spinneret orifices which are concentrically distributed on the inner ring and the outer ring, the section of the discharging end of each spinneret orifice is in a W shape composed of four leaves, and the included angle between every two connected leaves is 60 degrees. The surface of the m