How to control the spinning speed and temperature in Polyester DTY's high-speed spinning polyester pre-oriented yarn (POY) process?- Hengke Textile Technology Co., Ltd

In the high-speed spinning polyester pre-oriented yarn (POY) process of Polyester DTY, how to control the spinning speed and temperature to obtain the ideal fiber structure and performance?

In Polyester DTY's high-speed spinning polyester pre-oriented yarn (POY) process, the control of spinning speed and temperature is crucial to obtain ideal fiber structure and performance. Here are some suggestions on how to control these two parameters:

1. Control of spinning speed

Selection of spinning speed: Spinning speed is usually determined based on fiber characteristics and application requirements. High-speed spinning (such as 3000~6000m/min) can produce highly oriented fibers, namely POY. The choice of spinning speed should be guided by the limitations of the fiber production equipment and the end use of the fiber.
Stability of spinning speed: Maintaining stability of spinning speed is crucial to obtain uniform fiber structure and properties. Any fluctuations in speed can cause fiber inhomogeneities and defects. Therefore, spinning equipment should be checked and maintained regularly to ensure its stable operation.

2. Temperature control

Selection of spinning temperature: Spinning temperature is one of the key factors affecting fiber structure and performance. The spinning temperature of high-speed spinning is usually higher than that of conventional spinning, generally between 280 and 298°C. The choice of spinning temperature should be based on the thermal properties and spinnability of the fiber material. Too low a temperature may result in insufficient stretchability and orientation of the fiber, while too high a temperature may cause thermal degradation and performance degradation of the fiber.
Temperature stability: Like spinning speed, the stability of spinning temperature is also very important. Temperature fluctuations can cause fiber inhomogeneities and performance differences. Therefore, high-precision temperature control equipment and sensors should be used to monitor and adjust the spinning temperature.

3. Other matters needing attention

Raw material quality: High-quality raw materials are the basis for obtaining ideal fiber structure and performance. Therefore, the quality and purity of raw materials should be strictly controlled.
Spinning process parameters: In addition to spinning speed and temperature, other spinning process parameters (such as draw ratio, cooling conditions, oil formulation, etc.) will also affect the structure and performance of the fiber. Therefore, these parameters should be adjusted according to the actual situation to obtain the best results.
Equipment maintenance and cleaning: Regular maintenance and cleaning of spinning equipment is very important to maintain its stable operation and extend its service life. In addition, a clean spinning environment also helps reduce fiber contamination and impurities.

Ideal fiber structure and performance can be obtained by precisely controlling spinning speed and temperature as well as paying attention to other spinning process parameters and equipment maintenance.