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介绍了500 dtex/68 f聚酰胺高强丝的生产设备与工艺。在设备方面,对熔体管道进行特殊设计,采用2 500 mm长的侧吹蜂窝板,用双油嘴上油,喷丝板微孔采用环形排布,牵伸辊改为一冷三热等;在工艺方面,选择相对黏度为2.8~3.2的切片,纺丝温度270~280℃,开发适合高强丝的油剂,优化牵伸工艺等,生产出了满足客户要求的产品。
The production equipment and technology of 500 dtex / 68 f polyamide high strength wire are introduced. In terms of equipment, the melt pipe is specially designed with 2 500 mm long side blown honeycomb panels, oiling with double oil nozzle, micropore arrangement of the spinneret in annular arrangement and change of draft roller to cold and hot, etc; In the aspect of technology, we choose the slice with the relative viscosity of 2.8 ~ 3.2, the spinning temperature is 270 ~ 280 ℃, develop the oil suitable for high strength wire, optimize the drafting process and so on, and produce the products that meet the customers’ requirements.