Manufacturing process of untwisted yarn

Abstract

A manufacturing process of untwisted yarn is disclosed. Spun yarn is sized and hit during drying. The yarn is untwisted by being twisted in a reverse direction opposite to the spin direction, and / or further twisted in the reverse direction, to develop a high tensile strength and flexibility.

Description

technical field [0001] The invention relates to a manufacturing method of untwisted yarn, in particular to a manufacturing method of soft untwisted yarn with good touch and strong thermal insulation. Background technique [0002] Generally, the so-called untwisted yarn refers to spinning with an untwisting rate within 70%-100%, which has a high degree of softness and three-dimensionality, and has excellent heat retention and water absorption. It is suitable for weaving towels, bathrobes, and children's products. cotton fabric. [0003] The manufacturing method of existing untwisted yarn is suggested by the Korean invention patent "untwisted yarn and the weaving method of untwisted fabric utilizing the untwisted yarn" (patent registration No. 144692). This invention patent is that the soluble yarn and the twisted non-soluble spinning yarn are combined with each other, and then untwisted in the opposite direction, and finally the soluble yarn in the combined yarn is dissolved...

AI Technical Summary

Problems solved by technology

[0005] First, due to the different degree of shrinkage between soluble and insoluble filaments, the insoluble filaments are pushed aside from the soluble filaments, causing many problems during weaving;

[0006] Second, after untwisting, the insoluble yarn is wound around the soluble yarn, and the friction between the warp yarn, the heald and the reed is severe during weaving, and the above-mentioned spinning is only supported by the tension of the soluble yarn, so it is very difficult Difficult to use as a warp;

[0007] Third, when polyethylene is used as a soluble silk, it must be dissolved in an alkaline solution, and the alkaline solution is not only expensive, but also harmful to the human body and pollutes the environment

Also, it takes a long time to dissolve soluble silk with alkaline solution

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