Classification of short fibers: According to the fibers used for blending, long fibers are divided into cotton type, wool type, and medium-length type according to the degree.
Polyester long fiber classification:
1. Polyester full-drawn yarn: low-speed spinning, high-speed stretching and winding
Features: high strength, good bobbin forming, fineness, strength, small elongation unevenness, uniform dyeing, etc.
2. Polyester pre-oriented yarn: When the high-speed spinning speed is 3000~3600/min, pre-oriented yarn can be produced.
Features: High degree of pre-orientation, stable properties, good mechanical properties, high uniformity, and good processing performance.
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