Study On Technics Of Open-end Air-jet Spinning

Open-end air-jet spinning is a kind of new spinning method, which utilizes high-speed airflow produced by nozzles to finish twisting and wrapping. Its advantage has been recognized by more and more people, and it has developing in a high speed in these years.No.861 is a machine type of this spinning method by Murata Company. There are only no more than 10 these machines in our country, so we don't have mature technics of this type machine. In this paper, it is researched on spinning technics of open-end air-jet spinning, base on the No.861,it is designed perpendicularity experiments to find relationship between spinning technics and yarn qualities;moreover we analyze yarn properties and structure of this type spinning method and compare them with other spinning method yarns.This paper mainly includes five parts. In the first part, the development of air-jet spinning, the research actuality, the aim of this thesis and the research content are introduced. In the second part, spinning process and spinning mechanism are introduced. In the third part, a series of perpendicularity experiments post the relationship between spinning technics and yarn properties, a experience formula is obtained and from which the best technic can be known. In the fourth, compare with other spinning method, MVS yarns' properties are introduced in details. In last part, by analyzed yarn structure, a structure matrix of MVS yarn is elicit.