One-step spinning and winding combined manufacturing process for 24-head/position multi-heterogeneous hybrid yarn composite fiber

Abstract

The invention discloses a one-step spinning and winding combined manufacturing process for 24-head / position multi-heterogeneous hybrid yarn composite fiber. The process comprises the steps of material preparation, crystallization and drying, melting and filtering, melt distribution, spinning of pre-oriented yarns and fully-drawn yarns, oiling, pre-meshing of the fully-drawn yarns, drawing and sizing of the fully-drawn yarns, composite meshing and winding (fixed length and fixed weight) in turn. The process fully utilizes and reforms the existing spinning and winding equipment to integrate spinning and winding at one time, and can produce 24 spinning cakes with fixed length and fixed weight at each position simultaneously so as to improve the production efficiency and economic benefit; and the produced multi-heterogeneous hybrid yarn composite fiber has high quality.

Description

technical field [0001] The invention relates to a one-step 24 heads / position multi-different mixed fiber composite fiber spinning and winding combined manufacturing process. Especially the joint manufacturing of multi-differential mixed fiber composite fibers that can complete spinning, web-connected compounding and winding of several different fiber raw materials in one step, and each spinning and winding can produce 24 fixed-length and fixed-weight silk cakes at the same time method. Background technique [0002] Due to production technology reasons, domestic manufacturers generally adopt a two-step method to produce multi-differential mixed fiber composite fibers. The number of spinning and winding heads of this production method is mostly 6 heads / bit, 8 heads / bit, and the most is 12. Head / bit is a common conventional spinning and winding technology, through the separate spinning of pre-oriented yarn (POY) and fully drawn yarn (FDY), winding and then unwinding and net pr...

AI Technical Summary

Problems solved by technology

[0003] 1. Low production efficiency: the compound speed of the two-step method is only about 800m / min;

[0004] 2. High production cost: the two-step method is that two kinds of fibers are spun separately, wound and then compounded in the subsequent process. The production process increases, the equipment investment increases, the floor area is large, the workshop is large, the labor cost is high, and the raw material consumption Large, long production cycle, increased working capital occupation, and low premium product rate;

[0005] 3. Unstable quality: the two-step production process is long, with many control points and many influencing factors, which is not easy to control;

[0006] 4. The product grade is low; the length and weight cannot be fixed

[0007] 5. The production variety is limited: especially the fine-denier silk products whose demand is gradually increasing in the market cannot be produced at all, and the demand for fine silk products is showing a trend of gradually increasing

If the entire production line produces 75dt products, the utilization rate of main equipment is low and the surplus capacity is large, and the cost of production and management per unit product is directly affected due to the decrease in daily output, power consumption, labor costs, equipment depreciation costs, etc.; followed by There is a decrease in the flow rate of the melt, an increase in the residence time of the melt in the conveying pipeline, an increase in the degradation of the melt, and a decrease in the heat brought to the spinneret, which reduces the temperature of the spinneret plate, resulting in floating, End breakage and hole plugging increase, resulting in unstable production, reduced full roll rate, and increased consumption of slices, paper tubes, power, accessories, etc.

It is more difficult to produce products with finer deniers, which affects product quality and production efficiency, and ultimately affects the company's interests

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