The yarns in the 3D six-direction braided preforms were analyzed in this paper by a volume-control method, through of the rule of the braiding, and the result was validated by experimental observation.

Through analyzing the same fabric weaves with various types of yarns and the same fabric weaves with the same types of yarns to pass through a certain dent during weaving,it solved some quality problem.

This paper presents an approximate theoretical analysis of the tension increase in the non flexible fibres and yarns passing around a peg,through which a modified Capstan equation is obtained.

Case study of how chinese yarn manufacturers to improve international competitiveness;

Measurement of decreasing cotton yarn hairiness;

Feasibility to display unevenness of the yarn long section by use of relative linear density;

In the process of yarnspinning,the rotating airflow inside the swirler can exert an effect on the twisting formation of yarn,thus improving the quality of yarn.

Application of modular communication of line measure equipment of yarn quality;

Forecasting Yarn Quality Using Artificial Neural Network and AFIS;

Aiming at the fact that the current yarn quality prediction model for optimizing the spinning process could not meet the needs of practical production,support vector machine(SVM) method for yarn quality prediction was proposed.

Conclusion is made that new spinning technology should be based on hi-velocity,hi-robotization,hi-automation,large package,wide application of raw material,seperation of twisting from winding,minimization of twisting trangle section,improvement of yarn structure,reduction of hairiness.

Contrast analysis is done to the domestic cotton spinning frame equipped with the self-developed centralizing device with double suction grooves for the cotton yarn of same fineness regarding yarn structure and property of yarn produced in compact-siro spinning process under the same condition.

However, the researching work on the spinning mechanism of compact spinning technology and its yarn structure is very little for its short developing history.