High-speed stretching of polyamide textile yarns

Conclusions Studies of the process of drawing 5-tex polyamide textile yarn at take-up speeds up to 1650 m/min have been performed on a laboratory stand.It has been found that, with increase in stretching speed, within the investigated limits the drawing force and physicochemical properties of the yarn essentially do not change. This permits us to recommend an increase in stretching speed for industrial adoption.Translated from Khimicheskie Volokna, No. 1, pp. 22–24, January–February, 1986.     

High-speed spinning and orientational strengthening of polyester fibres. Analysis and prospects for development. A review

The processes are classified and the theoretical and technological premises for substantiation of orientational strengthening schemes are examined. Modern technological schemes for separate and combined processes of high-speed spinning and orientational strengthening are described, and the prospects for development of new technologies are evaluated. The evolution of orientational strengthening technology is based on multistage drawing for obtaining high-strength fibres and one-stage processes for obtaining medium-strength fibres. Examples of the implementation of modern schemes for production of polyester fibres are reported. Translated from Khimicheskie Volokna, No. 6, pp. 7–13. November–December, 1997.     

Special features in spinning fine viscose textile yarns

Conclusions Conditions which assure stability of the process of spinning a complex viscose yarn with an increased number of elementary filaments have been determined.It has been shown that stability of the process of spinning complex viscose textile yarn of 13.3 tex linear density with an increase in number of elementary filaments (>60) is increased on reducing the jet stretch, reducing the diameter of the spinneret holes from 0.09 to 0.06–0.05 mm, and bringing the distance between them from 1.4 to 0.5 mm.Translated from Khimicheskie Volokna, No. 3, pp. 39–40, May–June, 1984.     

熔体直纺20头纺涤纶FDY生产工艺

介绍大连合成纤维研究所研制的20头纺纺丝设备与德国巴马格公司20头纺FDY卷绕机的成功嫁接,探索熔体直纺20头纺涤纶FDY生产工艺。采用该工艺生产效率明显提高,增强了市场竞争力。     

Preparation of combined triacetate-polyamide yarns during the spinning process

Conclusions A technological process has been developed for the preparation of triacetate-polyamide pneumatically connected yarn on a machine for spinning triacetate yarn.Triacetate-polyamide pneumatically connected yarns have been processed into silk-like dress fabrics and tricotage cloth. The ease of yarn passage in textile processing, and also on warping and knitting equipment, is good. The development has been adopted for industrial development.Translated from Khimicheskie Volokna, No. 4, pp. 22–24, July–August, 1986.     

一步法涤纶双收缩丝纺丝工艺及性能研究

采用一步法高速纺丝,在相邻纺丝位生产涤纶高收缩预取向丝(POY)和低收缩全拉伸丝(FDY),再合股加弹变形,生产涤纶双收缩混纤复合丝(BSY),探讨了纺丝工艺对BSY结构及性能的影响。结果表明:高收缩POY的纺丝速度、低收缩FDY的拉伸倍数、热辊温度是影响BSY的结构及性能的主要因素;当热辊GR1,GR2的速度分别为820,2 950 m/min,温度分别为85,110℃,纺丝速度为3 000 m/min时,得到的BSY结晶度为36.60%,声速取向因子达0.723,沸水收缩率达40.80%,其他力学性能也较为优异,断裂强度为1.909 cN/dtex,断裂伸长率为38.17%。     

涤纶POY纺丝工艺的计算机模拟研究

基于熔融纺丝动力学模型及理论,在已知物性参数的情况下,计算模拟了不同线密度、纺丝速度、吹风速度对涤纶预取向丝(POY)丝条温度、速度、应力、直径在纺程上的变化.结果表明:随着线密度、纺丝速度、吹风速度的增加,涤纶POY丝条温度、速度、应力沿纺程递增;纤维直径随线密度的增加而增加,纺丝速度、吹风速度对纤维直径的影响很小.     

SP40: Contemporary systems for spinning textile yarns

SP40: Contemporary systems for spinning textile yarns