Pure-cotton hard-twist color yarn production method

Abstract

The invention provides a pure-cotton hard-twist color yarn production method. The pure-cotton hard-twist color yarn production method is characterized in that a technological process sequentially includes normal-twist yarn dyeing, yarn winding, twisting and sizing, wherein cheese yarn dyeing is adopted in a dyeing procedure; in a yarn winding procedure, dyed color yarns are wound on a doubling machine into bobbin yarns used for a twisting machine; in a twisting procedure, the bobbin yarns are twisted on the twisting machine by a 'ZZ' twisting process, and the speed is 6500-6800 revolutions per minute; 90 DEG C*30min high-temperature yarn steaming sizing is adopted in a sizing procedure. The pure-cotton hard-twist color yarn production method has the advantages that a traditional process method for hard-twist color yarns is broken through, the defects of traditional hard-twist color yarns are overcome fundamentally, outside-to-inside color difference of the dyed bobbin yarns can be decreased effectively, weaving efficiency is improved substantially, ultimate twist of the cotton yarns is further increased, and breathability and cool sense of cotton fabric can be improved substantially.

Description

technical field [0001] The invention provides a production method of pure cotton strong-twisted colored yarn, in particular relates to a production process of twisting pure cotton colored yarn to make strong-twisted colored yarn. Background technique [0002] The twist of traditional yarn is generally based on the critical twist coefficient to determine the optimal twist. When the twist coefficient is higher than the critical twist coefficient, the strength will decrease as the twist increases, but as the twist increases, especially when the twist is more than 1.5 times the critical twist coefficient, the cotton fabric will appear similar to linen fabrics: the air permeability increases, and it has obvious cool feeling. Such as the "ice cotton yarn" variety of strong twist yarn popular in the Japanese market. The process of this kind of strong-twisted dyed yarn is as follows: in the spinning process, the twist is increased to the required degree, steamed at 90°C*30’ to set...

AI Technical Summary

Problems solved by technology

In actual production, the following problems exist in the strong-twisted dyed yarn: due to the high yarn density, the dye is not easy to penetrate during the dyeing process, resulting in large internal and external deviations of the package yarn, and prone to uneven dyeing

In addition, partial yarn shrinkage due to dyeing is too large, resulting in strong damage, which brings many quality problems to subsequent processing and use.