A kind of preparation method of high-quality nylon 6 mother silk

Abstract

The invention provides a preparation method of high-quality chinlon 6 master yarns. According to the method, yarn beams are primarily cooled by a slow cooling device with the temperature controlled to be 160 to 200 DEG C; then, the yarn beams pass through a spinning path, a humidifier is adopted for carrying out mist spraying on the yarn beams entering the spinning path, the moisture spraying quantity of each yarn beam is 0.8 to 1.2kg / h, and the yarn beams are guided onto an oiling wheel by a yarn guide bar to be uniformly and flatly paved; next, the yarn beams sequentially reach a cold roller group, a heat roller group and a tension roller after passing through a yarn guide hook, and yarns stretched by the tension roller are formed into finished products through coiling; the stretching ratio of the cold roller group is 1.2 to 1.5, the sizing temperature of the heat roller group is 140 to 180 DEG C, the coiling speed of the coiling forming is 4500 to 5000m / min, in addition, the tension between the cold roller group and the heat roller group is controlled to be 30 to 50cN, and the tension between the tension roller and the coiling forming is 15 to 20cN. The preparation method has the characteristics that the operation is simple and convenient, the preparation speed is high, and in addition, the prepared products have high quality.

Description

[0001] 【Technical Field】 [0002] The invention relates to a method for preparing mother yarn in the spinning field, in particular to a method for preparing high-quality nylon 6 mother yarn. [0003] 【Background technique】 [0004] Nylon yarn is a kind of textile raw material. There are many types of monofilament, strand and special yarn. In daily life, it is mainly used to make sportswear and scarves. It is still favored by people. In medical treatment, its main Used to make bandages; nylon silk products are more used to produce decorative fabrics. [0005] Among them, nylon monofilament is generally produced by single-hole spinnerets in fiber production. With the continuous advancement of technology, some varieties can use porous spinnerets on a spinneret. The mother silk fiber is obtained, and then the mother silk is divided to obtain monofilaments. [0006] At present, the production technology of mother yarn adopts the method of primary to secondary drafting, and the strength of t...

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Problems solved by technology

[0006] At present, the production technology of mother silk adopts the method of one-stage to two-stage drawing, and the strength of the monofilament is generally low. In order to improve the strength of the thread, the Chinese invention patent with the application number 201110227222. The preparation method and device of high-strength polyester mother silk, the technical scheme of the preparation method is: the tow is cooled by side blowing and passes through the spinning shaft, and then oiled, drawn, and wound. The tow passes through the first After oiling and tension rod, the first tension is adjusted by the tension regulator, and the first tension of the tow is controlled to be 40-80cN, and then the second oiling is carried out; four drafting processes are adopted, and the first drafting process is The draw ratio is 1.8 to 2.2, the draw ratio of the second draft is 1.4 to 1.8, the draw ratio of the third draft is 1.2 to 1.4, and the draw ratio of the first thread draft is 0.90 to 1.0; Although the silk produced by this preparation method has high strength, due to the need to adopt multiple oiling and four drawing processes, not only the process is relatively complicated, but also the spinning speed is affected.

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