Spandex-free elastic denim fabric manufacturing method and denim fabric

Abstract

The invention discloses a spandex-free elastic denim fabric manufacturing method and denim fabric, and belongs to the field of spinning, the manufacturing method comprises the following steps: manufacturing chemical fiber filaments containing terylene and acrylic fibers, using the chemical fiber filaments as weft yarns, using sizing-dyed cotton fibers as warp yarns, and weaving into denim, denim is sequentially subjected to singeing, desizing, ozone treatment, clean water washing, drying, liquid ammonia finishing, shaping and preshrinking, and the spandex-free elastic denim fabric is obtained. According to the manufacturing method, covering yarns are not used as raw materials, spandex is not used, chemical fiber filaments containing polyester and acrylic fibers are used as weft yarns with certain elasticity, cotton fibers are used as warp yarns, and after ozone treatment, the spandex-free elastic denim fabric is obtained. After liquid ammonia finishing, the cotton fibers also have elasticity, acrylic fibers in the chemical fiber filaments are curled to form water guide channels, polyester provides certain elasticity, the fabric has certain elasticity in the warp direction and the weft direction, and the fabric has the advantages of being breathable and slightly elastic.

Description

technical field [0001] The invention relates to a method for making a spandex-free elastic denim fabric and a denim fabric, and belongs to the field of textiles. Background technique [0002] The denim fabric is made of indigo-dyed cotton warp yarns and plain white weft yarns in a three-up and down-twill weave structure. Generally, it has the characteristics of thick and stiff, but in recent years, consumers have become more comfortable with denim clothing. To meet the requirements, manufacturers often introduce elastic core-spun yarn when developing denim fabrics to make the fabric have good elasticity. [0003] The elastic core-spun yarn takes spandex as the core, and the outer layer is covered with short fibers. With the excellent elasticity of spandex, the yarn is elastic, so that the fabric made of the elastic core-spun yarn is also elastic. However, garments made from such fabrics suffer from two disadvantages. [0004] First, after long-term wearing and exercising, ...

AI Technical Summary

Problems solved by technology

However, there are two disadvantages in the clothes made of such fabrics

[0004] First, after long-term wearing and exercise, bulges will appear in some positions, and the yarn will be deformed, which seriously affects the comfort of wearing

[0005] Second, the changing fading style of denim clothing is achieved by the washing process, which includes chlorine bleaching, and spandex is not resistant to chlorine bleaching. Especially when denim clothing needs to be washed into a light color, it needs to go through multiple repetitions The washing process makes the denim garments containing spandex appear slippery and lost, which seriously affects the quality of the garments. Such defects cannot be repaired.

However, double-layer protection for spandex can only delay long-term wearing deformation and inhibit spandex from becoming brittle after chlorine bleaching. The yarn always contains spandex, which treats the symptoms but not the root cause, and the process cost of double core-spun yarn is also high.

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