[섬유] Cotton Maturity and Its Influence on Nep Formation 출판일 : 2001.07.01 저자 : Select this articleI. Frydrych, M. Matusiak, and T. Świech 서지사항 : Textile Research Journal, Volume 71, Issue 7, 595페이지 등록일 : 2012.10.30 I 조회수 : 75 작성자 : admin |
The nep number in yarn depends on both the nep number in the raw material and changes
in the number and size of neps in the spinning process. Therefore, the two problems need
to be analyzed separately. The first problem consists of testing the value changes of some
cotton parameters on different processing stages, which influence the appearance and
quality of rotor yarns made from different raw materials. The second problem is an analysis
of the reasons for mechanical nep creation in raw materials and during processing. In order
to explain the phenomenon of mechanical nep formation, which in our opinion is related to
fiber buckling, we derive the theoretical relationship between the cotton fiber maturity
parameter, called the coefficient of circularity, and the minimal inertia radius of a fiber cross
section, assuming both ellipse and flattened ring shapes of fiber cross sections. The
correlation coefficients between the mechanical nep number and the other cotton fiber
parameters are determined. The minimal inertia radius and maturity ratio are significantly
correlated with the mechanical nep number in raw material. We can draw a hypothesis that
the minimal inertia radius and fiber slenderness are the most relevant parameters for
mechanical nep formation during processing.
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