Three Ways You Must Know About Spinning Cotton

1. According to the specific data of the physical characteristics of raw cotton to cotton

To control the physical properties of blended cotton and ensure the stability of the indicators for the batch of raw cotton, it is first necessary to formulate blended cotton index (length, fineness, maturity, strength, short fiber yield, etc.) Each indicator allows the range of differences. At the time of formulation, the scope of the various indexes and differences of raw cotton can be strictly relaxed. Secondly, it is necessary to take into account the amount of raw cotton reserves, the inventory level can be strict, and the inventory can be small, so as to avoid implementation difficulties. When assigning cotton to the company's key varieties, it is necessary to carefully consider and minimize the scope of differences, that is, the average value of the indicators in the blended cotton should be controlled within the range, and the indexes of the two batches of cotton before and after the replacement should be guaranteed to be close to each other. It is not advisable to use a simple average for the indicator, but instead to use a weight percentage to calculate the average. When the general product is equipped with cotton, the range of indicators and differences can be relaxed, and only the average value of the main indexes of the blended cotton can be within the specified difference. In general, the smaller the difference between the batch of raw cotton, the better, the difference between the various types of steamed bread in the mixed cotton may be slightly larger. Sometimes, although there are some differences in the properties of the raw cotton, there is no harm to the quality of the yarn, but the quality can be improved. Improved. For example, in a cotton component composed mainly of a shorter fiber, a relatively long fiber is appropriately matched, or a relatively fine fiber is appropriately used in a cotton component mainly composed of a relatively coarse fiber, and the dry fiber is improved to improve yarn formation. Strength has certain advantages. The key is to ensure the consistency of subsequent raw cotton.

2. According to the principle of spinning and spinning experience to guide the distribution of cotton

Take yarn strength as an example to illustrate: The main indicators affecting yarn strength in raw cotton physical properties are length, fineness, maturity, and short fiber yield. When the fiber length is long, the contact area between the fibers is large, and there are many cohesion points between them, so the cohesion force is also large, and the strength of the formed yarn is naturally increased. When the fiber fineness is small, the number of fibers contained in the cross section of the yarn increases, and the yarn becomes stronger. It also increases with it; when the fiber is mature, the strength is high, and the strength of the yarn becomes large; as for the short fiber, the yarn structure can be uneven due to the floating state during the drafting process, causing it to bear the tensile force. Weak rings, and short fibers and many fibers have poor cohesion between the fibers. When pulled, the yarn slips off and goes offline. As a result, the strength of the yarn becomes unfavorable. Another example is yarn in the yarn, impurities, hairiness, etc., under the same conditions. It is determined directly by the nature of the raw cotton. The high linter yield in raw cotton results in large hairiness (except for mechanical friction) in the yarn. The CV value of the dried yarn is large. The raw cotton contains a large amount of impurities, a lot of defects and poor ripening. The neps and impurities in the yarn are many. According to the above analysis, after the design scheme for cotton distribution is established, some relevant processes in the production process can be proposed, and a certain process can be effectively controlled in a targeted manner. The production initiative can be mastered in advance, and the quality risks that may be caused by the raw cotton can be affected. The former should be eliminated, and it should be controlled and eliminated early to play a role in forecasting.

3. Comprehensive cotton blending based on stock raw cotton

The “classification and queuing” referred to by a typical cotton mill is an earlier method of designing cotton. Although primitive, it is more practical. At present, many cotton mills are still in use. Classification is based on the nature of raw cotton and the different requirements of various yarns, the appropriate number of cotton raw cotton to be classified as a class, is divided into several categories. Queuing is to change the raw cotton in the same category, such as the region, nature of the closer in a row in order to take over the use. With cotton, we must consider both the current and the future. We must consider the key varieties and also take care of the general varieties. We need to proceed from actual needs and possibilities, and cross-substituting them according to priorities. Arrangements should be reasonable and appropriate so that the raw cotton ingredients used in each species will not be produced. Obvious changes to keep production and yarn quality stable.

In addition, we must mention: some of the flowers produced by the various processes, such as broken cotton rolls, broken sliver, roving head, roller flowers, bellows, etc., there are some cotton, such as broken seeds, copying flowers and fine In the use, we must grasp the scale and use it rationally. Otherwise, although saving a little cotton, it will damage the quality of the yarn, which will not be worth the candle.

In short, with single cotton work, it is impossible to adapt to the current situation of increasingly fierce competition in production and markets. In the information age today, the use of computers for cotton distribution is an inevitable trend in the development of cotton blending technology, and it can also make yarn quality a new level.

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