A Study of the Accelerated Point Distribution of Floating Fiber in Drafting Process

Abstract

This paper will be a statement of method and results of the accelerated point distribution of floating fiber in drafting process. In order to find the accelerated point distribution, fist of all, fiber length, finess, gauge, draft ratio and form of fiber in drafting zone are decided, and then the froce used in pulling a fiber from the fiber bundle is measured. With the results of forces, the relations between air contents and drawing forces are obtained by means of Cox relation. By using the above constant and relation, point distribution can be calculated by the method of simulation. The results obtained are as follows ;(1) Point distribution is in trigometric form.(2) The value of the drawing force do not change the form of point distribution.(3) Ratio K of the accelerated fiber is about 30% on roller draf ting;and is about 17% on apron drafting.(4) The number of accelerated floating fiber is in 'proportion to the number of fiber held in the nip point of front roller.(5) In order to produce the yarn of good quality, the fiber in front roller pert must be perfectly held, and the fiber at back roller part must be loosely held.