Discussion of coarse pentalobal bright PA6 FDY production process
Huang Longquan,Xu Yinglian (College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018)
The high-quality 233 dtex/18 f coarse pentalobal bright PA6 FDY with breaking strength 4. 0 cN/dtex, elongation at break 43. 5% , yarn irregularity 2. 13% and dyeing evenness not less than 4. 0 grade can be produced from home-made highspeed spun bright PA6 chip with relative viscosity 2. 85±0. 03 on a conventional PA6 fiber plant by adopting double oil roller instead of oil nozzle,increasing the spinneret diameter to 100 mm from 80 mm and using pentalobal spinneret hole under the conditions of spin pack pressure not less than 15 MPa, spinning temperature (275±1)℃, cross air blow speed 0. 68 m/s, heat setting temperature (170±1)℃and network air pressure (0. 35±0. 01) MPa.
【CateGory Index】： TQ342.11