Coagulated and twisted fiber strand and continuous forming method thereof

Abstract

The invention discloses a coagulated and twisted fiber strand and a continuous forming method thereof. The continuous forming method comprises the following steps that continuously fed fibers are subjected to rotary coagulation and twisting, are subjected to twist increase and are led out, so as to obtain the continuous coagulated and twisted fiber strand. The rotary coagulation and twisting means that the fibers are centrifugally coagulated and twisted; the twist increase means that the twist of the fiber strand subjected to rotary coagulation and twisting is increased, and all or part of the increased twist is removed after the fiber strand is led out; the prepared coagulated and twisted fiber strand is the continuous fiber strand of which the fibers are in a single fiber state and are uniformly distributed in the longitudinal direction; and the linear density range of the fiber strand is 1000-2000 tex, and the twist range of the fiber strand is 5-20 twists / m. By means of the continuous forming method for the coagulated and twisted fiber strand, the fiber strand meeting the requirement for super-large drafting of a spinning frame can be prepared, and an effective method is provided for achieving super-large drafting of the spinning frame; and the quantitation of the prepared coagulated and twisted fiber strand is between existing roving quantitation and drawn sliver quantitation, the requirement of super-large drafting on fiber strand quantitation can be met, the fiber strand has a certain twist, and the phenomena of fiber strand end breakage and accidental drafting during spinning can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of spinning, and relates to a poly-twist strand and a continuous forming method thereof. Background technique [0002] Ring spinning is the most mature and widely used spinning method today, and its basic process is blowroom → carding → (combing preparation, combing) → drawing frame → roving → spun yarn. In order to ensure the quality of the spun yarn, a roving process needs to be set between the drawing frame and the spinning process. This is because when the cooked sliver made by the drawing frame is directly drawn into yarn by the spinning frame, the drafting ratio of the spinning frame needs to reach More than 300 times, the quality of the spun yarn is difficult to be guaranteed. The reasons why the quality of spinning is difficult to be guaranteed are: 1. The draft ratio of ordinary spinning frame is difficult to reach more than 300 times. 1. The sliver made by the drawing frame has a relatively large...

AI Technical Summary

Problems solved by technology

At present, the ration of the cooked sliver fed to the super-large drafting device should not be too light, because the existing sliver forming technology causes the cooked sliver to have no twist. When the ration is too light, due to the small number of fiber aggregates, it will As a result, the combination of fiber aggregates in the cooked sliver is poor. When spinning spun yarn, the cooked sliver is easy to break, and it is very easy to produce accidental drafting. A light and twisted sliver is a necessary condition for ring spinning to achieve super draft