Discussion on production process of 278 dtex/288 f antibacterial polyester POY by direct melt spinning process
Using polyethylene terephthalate melt with an intrinsic viscosity of 0.64 dL/g as raw material and adding 2.2％anti-bacterial masterbatch by mass fraction with an intrinsic viscosity of 0.63 dL/g,278 dtex/288 f antibacterial polyester pre-oriented yarn(POY)was produced using direct melt spinning and online masterbatch addition technology.The masterbatch drying process and spinning process conditions were explored.The results showed that the moisture content of the antibacterial master-batch was below 70 μg/g after drying for 10 h at a drying tower temperature of 120℃,which met the spinning requirements;and the spinning and production were stable,the top-quality product rate was above 97％,and the antibacterial polyester POY pro-duced had a breaking strength of 2.30 cN/dtex,yarn unevenness below 1.12％and antibacterial rates against Staphylococcus au-reus and Escherichia coli up to 97％and 84％,respectively,when the spinning process conditions were optimized as followed:an initial pressure of about 15 MPa for spin pack,calm zone height of 50 mm,circular air blow temperature of 21℃,relative hu-midity of 80％-90％,pressure of 18 Pa,collection and oil position of 900 mm and spinning speed of 2 650 m/min.
万方数据
维普
