Preparation technology of low-twist cotton and nylon wrapped yarns

Abstract

The invention relate to the field of production of low-twist cotton and nylon wrapped yarns and in particular relates to a preparation technology of the low-twist cotton and nylon wrapped yarns. The preparation technology comprises the following steps: (1) preparing yarns: preparing two threads of fiber single yarns including cotton, viscose cotton, viscose, Tencel, hemp and the like; combining double threads into a piled yarn; (2) preparing a core yarn: twisting one thread S with one thread Z of polyamide yarns with the same thickness, and crossly winding together by utilizing the same twisting degree, wherein the thickness is the same and the twisting degree is the same and rotation directions are opposite so that double thread yarns have no twisting; (3) coating and twisting: coating and twisting on a mechanical coating machine and penetrating the core yarn from the middle of a spindle; rotating bobbin pre-twisted yarns of the mechanical coating machine around the core yarn and twisting, wherein the twisting direction is opposite to that of the single yarn. According to the preparation technology provided by the invention, warp and weft yarns for burnt-out clothes are mainly solved, and the low-twist cotton and nylon wrapped yarns are produced; two core-yarn cotton yarns are crossly wound together with the same thickness and the same twisting degree and have zero twisting, so that the friction force is increased by the core yarns exposed from a burnt-out part of the clothes, a slippage phenomenon between yarns is greatly alleviated and the clothes are more beautiful.

Description

technical field [0001] The invention relates to the production category of low-twisted cotton-nylon covered yarn, in particular to a preparation process of low-twisted cotton-nylon covered yarn. Background technique [0002] The traditional covering production is generally cotton yarn plus core yarn twisting, the twist is relatively high, at least two or three hundred twists are required, and the core yarn is generally spandex. If cotton yarn and nylon are combined first and then twisted on a double twister, the core yarn Nylon participates in twisting, and the covered yarn processed in this way has the following disadvantages: 1. Nylon core yarn has a relatively high twist. Affect the speed of warp drawing and dyeing, greatly increase the phenomenon of loose warp, and seriously affect the yield of fabrics; 2. Nylon yarn has a high twist, and the burned-out garment is in a loose state, and the exposed core yarn of the burnt-out part will cause twisting and slipping , has se...

AI Technical Summary

Problems solved by technology

[0002] The traditional covering production is generally cotton yarn plus core yarn twisting, the twist is relatively high, at least two or three hundred twists are required, and the core yarn is generally spandex. If cotton yarn and nylon are combined first and then twisted on a double twister, the core yarn Nylon participates in twisting, and the covered yarn processed in this way has the following disadvantages: 1. Nylon core yarn has a relatively high twist. Affect the speed of warp drawing and dyeing, greatly increase the phenomenon of loose warp, and seriously affect the yield of fabrics; 2. Nylon yarn has a high twist, and the burned-out garment is in a loose state, and the exposed core yarn of the burnt-out part will cause twisting and slipping , has seriously affected the appearance of clothing. At present, there is no cotton plus low F-number nylon core yarn and low-twist covering yarn on the market; because of the above reasons, it is impossible to mass-produce burnt-out denim fabrics and clothing