Forming process for polyester fiber spun yarns

Abstract

The invention discloses a forming process for polyester fiber spun yarns, and belongs to the technical field of polyester fiber spun yarns. The essential of the technical scheme is as follows: the forming process for the polyester fiber spun yarns comprises the following steps: S1, blanking: using polyester fiber chips as raw materials and blanking; S2, melting extrusion: conveying the chips intoa screw extruder at first, and then melting the chip raw materials by the screw extruder and in the form of four-area heating; S3, spinning shaping: conveying chip melts into a spinning box, completing spinning for the molten-state chips via a yarn separation plate of the spinning box, and then enabling the spun yarns to pass through a delayed cooling area below the yarn separation plate; S4, air-blowing cooling: carrying out air-blowing cooling on the spun yarns through a cooling path; S5, oiling lubrication: enabling the spun yarns to pass through two oiling rolls which have a rotational speed of 14-27r/min; S6, thermal shaping: enabling the spun yarns to sequentially pass through five pairs of hot rolls; and S7, winding: winding a yarn roll of a winding machine with the spun yarns aftershaping and thermal reinforcement. The forming process for the polyester fiber spun yarns has the following advantages: the spun yarns are further thinned, the mechanical property of the spun yarns is improved, and the occurrence of the case of yarn breakage is reduced.

Description

technical field [0001] The invention relates to the technical field of polyester fiber spinning, in particular to a forming process of polyester fiber spinning. Background technique [0002] Polyester fiber is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, referred to as PET fiber, which belongs to polymer compounds. The biggest advantage of polyester fiber is that it has good wrinkle resistance and shape retention, and has high strength and elastic recovery ability. Due to the good performance of polyester fiber and its products, it has also been favored by the people. At present, polyester fiber is the largest variety of synthetic fiber. [0003] With the development of the times, polyester fibers are getting higher and higher. In order to meet the growing demand, ultra-fine polyester fibers are also introduced on the market. According to the traditional method: slice melting-splitting-winding, fo...

AI Technical Summary

Problems solved by technology

[0003] With the development of the times, polyester fibers are getting higher and higher. In order to meet the growing demand, ultra-fine polyester fibers are also introduced on the market. According to the traditional method: slice melting-splitting-winding, forming spinning However, the finer the spinning, the weaker the strength of the spinning structure, and the easier it is to break the filament during the spinning forming process. Therefore, the current research focus on polyester fiber technology is to refine the fiber and make the fiber have good mechanical properties. Solve the problem of easy wire breakage

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