Efficient and economical energy use technology in the processing of domestic coarse wool fiber

. There are many types of fabrics produced in the textile industry, and the scale of production and industrial use of non-woven fabrics is increasing with the help of textile technology. The production of non-woven products is considered a relatively new branch of the textile industry, and this type of products is characterized by low cost, originality of quality, and variety of production methods. Many types of fabrics have the potential to be used as short-term fabric substitutes in the textile, engineering, construction, automotive, shipbuilding, aviation, and medical industries.


Introduction
The essence of the method of determining the limit of deformation stages of non-woven fabric from coarse wool fiber is that the disproportion of non-linear diagrams of textile materials on stretching is the result of changes in their mechanical properties under stretching conditions.In the process of stretching, the initial structure of the material changes, as well as density, elasticity, plastic modulus, etc.
Based on these characteristics, the determination of the change of elastic, visco-elastic, visco-plastic modules of non-woven fabrics is somewhat the same, and the viscoelastic properties of the fabric appear at all stages of deformation.According to experiments, elastic deformation is also involved in the elastic and elasticplastic deformation stage, so in [1][2] it was proposed to combine all the names of these modules under the general name of the deformation module of non-woven fabrics.

Experimental research
In the process of stretching deformation of non-woven fabric in width a different situation is shown (Fig. 2,4,6).In this case, changes take place along a different trajectory than in ) ( E (Figure 1,3,5).Here, in the process of stretching, as well as when stretched along the length, the indicators of the deformation modulus decrease to the value * E .In addition, there is an increase along the E curved trajectory during stretching.

Research results
As can be seen from the above results, obtained in the experimental diagrams more accurately reflect the deformation stage of the non-woven fabric.It should be noted that the method of determining and evaluating the elastic, elastic plastic, and viscous stages of deformation proposed in is an effective and visual method for studying the deformation state and mechanical properties of nonwoven fabrics.
The results of the experimental and theoretical studies presented above allow us to determine the limits of the deformation stages of non-woven fabrics and its maturity indicators.To do this, we use the deformation law of (1) nonwoven fabric and rewrite it as follows: According to the experiments, we first consider the static deformation process, that is, we accept 0  dt d .Then equation (2) takes the following form.
In addition, we believe that the indicator is consistent with the results presented in Fig. 2,4,6.Accordingly, we assume that Formulas ( 4) and ( 5) make it possible to determine the value of the load applied to the non-woven fabric, in which the non-woven fabric undergoes elastic deformation, that is, after the load is removed, the material returns to its original state [9].
Based on this, if there is a deformation index  17,5% in the length of the non-woven fabric, the nonwoven fabric will be deformed.And when stretching along the width, the strap deformation is kept at t , the allowable load can be determined by formulas ( 4) and (5).In this case, the non-woven fabric retains its original shape and structure.
In order to obtain non-woven fabrics, a new type of non-woven fabric based on softening, bleaching, drying process and needle pinning, gluing, and pressing of coarse wool fibers through cleaning, washing and chemical treatment was obtained, and effective production technologies were proposed in practice at the same time as the effectiveness of their application.Based on the results of our research, non-woven fabric was obtained at the enterprise "JIZZAX JUN" in Jizzax city, and the technology of production of nonwoven fabric of three different thicknesses used for the automobile industry is recommended.Chine liseng L-4 180906, a new non-woven fabric manufacturer based on coarse wool fiber for the automotive industry, is characterized by the fact that the non-woven fabric is produced by softening the coarse wool fibers by combing, combing, needling and heating at high temperature.The non-woven fabric production technology was carried out in a more simplified manner.In addition, non-woven fabrics are obtained mainly on the basis of local natural wool fibers.The technology of production of new non-woven fabrics is presented in Figure 5 below.

Conclusion
1.It was determined from the experimental diagrams of non-woven fabric stretching, depending on the change of the deformation parameters in the stretching of the fabric along the width and length of the deformation modulus of the non-woven fabric.It was found that the change of the deformation modulus depending on the value of the deformation is mainly nonlinear.
2. It has been found that non-woven fabrics for the automotive industry are the best flexible material because they are relatively elastic and have the ability to compensate for small-scale errors and retain their shape when deformed.
3. When the deformation index of the non-woven fabric made of recommended coarse wool fiber is Е m =17,5, it is found that the non-woven fabric is elastically deformed, and when it is stretched along the width, the elastic deformation is 1.08%.

Figure 1 .Figure 2 .
Figure 1.A diagram of the elongation of the non-woven fabric according to the 1st option

Figure 3 .
Figure 3. Option 2 is a diagram of the lengthwise stretching of non-woven fabric.

Figure 4 .
Figure 4. Dependence of the modulus of deformation in the widthwise elongation of non-woven fabric No. 2 on the relative deformation During the stretching of the nonwoven fabric in width, as well as at the beginning of the deformation process, the soft structure of the nonwoven is densified without much resistance, therefore, the intensity of the *  deformation modulus decreases to a value of * E E  to 0. During stretching, the structure of the non-woven fabric becomes denser, the deformation modulus indicator increases k   

Figure 5 .Figure 6 .
Figure 5. Option 3 is a diagram of the elongation of the non-woven fabric lengthwise Integrating (3) we obtain the following

Table 1 .
Here, too, E=EN is defined by the indicator 0  N .

Table 1 .
Values of modulus of deformation at different stages of deformation in widthwise stretching of nonwoven fabricAs can be seen from Table1, an increase in the amount of wool in the structure of the non-woven fabric leads to an increase in the deformation modulus during tearing in deformation.Depending on the parameters of the deformation module