Sirofil pure cotton elastic yarn and manufacturing and application thereof

Abstract

The invention relates to a sirofil pure cotton elastic yarn and manufacturing and applications thereof. The pure cotton elastic yarns form a pure cotton coating structure by roving which forms a coating layer and spun yarns which forms a core layer through a sirofil spinning technology. The sirofil pure cotton elastic yarn is obtained by twisting and spinning roving and spun yarns in the same direction on a sirofil spinning frame, and finishing. Pure cotton fibers which do not have elasticity originally have natural elasticity after certain processing procedures and treatment, and the sirofil pure cotton elastic yarns replace conventional spandex elastic core-spun yarns used in an elastic jean fabric, so that technical problems of exposed cores, difficult weaving, and difficult control of breadth caused by using stretch yarns are prevented. The sirofil pure cotton elastic yarns are beneficial for enhancing stiff and smooth property of the elastic jean fabric and do not reduce fabric hand feeling. The invention provides a new yarn raw material for a conventional low-medium elastic jean fabric.

Description

technical field [0001] The invention belongs to the field of elastic yarn and its preparation and application, in particular to a sirofield pure cotton elastic yarn and its preparation and application. Background technique [0002] Elastic denim fabrics are comfortable to wear, compact and stylish, and stretchable freely. They occupy a large proportion in denim fabrics, and their elastic range is generally 10-20%. However, with the continuous improvement of people's material living standards, people have higher and higher requirements for elastic denim fabrics, not only requiring comfortable wearing, but also requiring them to be beautiful and environmentally friendly. [0003] At present, elastic yarns used in elastic denim are generally spun from natural fibers and elastic fibers in a core-spun or covered manner, such as core-spun floral twist elastic yarns, elastic double-filament core-spun yarns, and the like. Chinese patent (publication number CN106048810A) "a core-spu...

AI Technical Summary

Problems solved by technology

However, as far as the elastic source of elastic yarn is concerned, its elasticity mainly comes from PBT elastic yarn. Due to the chemical fiber material used in PBT elastic yarn, its hygroscopicity is poor, which affects the comfort of wearing.

Chinese patent (publication number CN104060356A) "A polyester-spandex double core-spun yarn and its fabric" uses composite polyester filament and spandex as the core, and natural fiber or chemical fiber as the covering fiber, in order to achieve the elasticity of spandex and the excellent quality of polyester. The combination of resilience, but because the core yarn is made of spandex yarn, it does not change the disadvantages of the elastic yarn in the spinning, weaving and even wearing process - exposed core, difficult to control the weaving width, difficult to degrade, pollute the environment, etc.

These structures achieve a corespun yarn structure that satisfies certain functions, but does not impart elasticity to the yarn

In addition, the document "Production and Development of Pure Cotton Strong Twisted Warp and Weft Elastic Fabric" (Qi Yinfang, Li Qingquan, Zhang Haixia, Tianjin Textile Science and Technology, 2009, 4: 22-24) proposes to use ordinary pure cotton strong twisted yarn to endow it with mercerizing finishing. Fabric elasticity, this type of fabric greatly reduces the hand feeling performance and wearing comfort performance due to too high single yarn twist

[0005] Obviously, the core-spun yarn used in the existing elastic denim fabrics often uses elastic yarn such as spandex as the core yarn, and pure cotton or cotton blended yarn as the covering yarn. It is difficult for the fabric to have both good elasticity and good elasticity. Dimensional stability, etc.; the existing elastic fabrics based on pure cotton natural fibers only rely on strong twisting of spun yarns, which endows a certain degree of elasticity while reducing the style of the fabric.

Now there is a lack of a yarn structure that can replace synthetic elastic yarns such as spandex to make denim fabrics have a certain degree of elasticity, thereby overcoming various disadvantages of using elastic yarns, while maintaining the style, quality and feel of denim fabrics.

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