Development of moisture-absorbing and quick-drying antibacterial composite knitted elastic denim fabric
The development of moisture-absorbing and quick-drying antibacterial composite knitted elastic denim fabrics has been developed to meet the needs of the market. It has been developed using a combination of moisture-absorbing, antibacterial functional fibers and knitted denim yarns through multi-dimensional composite weaving combined with yarn dyeing and fabric finishing. The composite knitted elastic denim fabric with moisture absorption, quick drying and antibacterial function all meets and exceeds the industry standard. Key words: moisture absorption and quick drying; knitted denim fabric; paint dyed yarn; composite weaving; post-compound composite knitted elastic denim fabric with moisture wicking, antibacterial and deodorizing function is an upgraded product of traditional denim fabric, and the garment made of the same High-end, stylish, and comfortable to wear, it is very popular among consumers in the international market. However, the production process technology related to such products is still relatively difficult to see in China.
In order to develop such products to meet the market demand, this paper adopts moisture absorption, antibacterial functional fiber, combined with cotton yarn dyeing process, through the multi-dimensional composite braiding technology and finishing technology, developed a composite knitted elastic cowboy with moisture absorption, quick drying and antibacterial function. Series fabrics. The product has been tested by many units such as the National Cotton Printing and Dyeing Product Quality Supervision and Inspection Center. The product functions fully meet the design requirements and can meet the market demand. Functional fiber selection 1.1 Moisture wicking fibers pass through three fibers of Coolmax (four tubular hollow polyester fibers), FCLS - 75 (surface grooved shaped polypropylene fibers) and Secotec (cross-section nylon 6 fibers) Comparison with efficacy [1 - 2], the final use of Coolmax fiber. Fabrics made with Coolmax fibers have a very good capillary effect and are about twice as dry as cotton. Strong breathability and good moisture absorption control keep the wearer's skin dry. At the same time, since the polyester fiber has a high wet yield modulus, it does not fall like a cotton fiber in a wet state, so that the microclimate state between the fabric and the skin can always be maintained, and the wearing comfort is improved.
In addition, the good thermal stability of the polyester fiber gives the interwoven fabric a good dimensional stability after high temperature treatment, and is therefore particularly suitable for use in knitted fabrics. The natural antibacterial fiber compares the performance of bamboo fiber, chitin fiber and metal fiber [3], and finally determines the bamboo pulp fiber. The bamboo pulp fiber has high strength, strong deodorizing, antibacterial and anti-ultraviolet functions, excellent moisture absorption, dehumidification and dyeing properties. It can maintain no insects and mildew in the natural environment, has natural antibacterial function, and has an antibacterial rate of 24h. Up to 75% or more.
The production of knitted cotton denim dyed knit denim fabric is usually the first dyed fabric, and the knitted denim cotton yarn is the main raw material for the production of knitted denim fabric. The traditional process uses indigo dyed yarn to achieve the "white core" distressing effect. However, the indigo dye must be reduced to a soluble ruthenium with a reducing agent in an alkaline solution before it can be absorbed by the fiber; then it is oxidized to form insoluble indigo attached to the yarn to achieve the purpose of dyeing. Therefore, it is necessary to add a large amount of caustic soda and insurance powder in the dyeing solution.
In addition, indigo dye is a very difficult to control dye, the composition of the dye solution, temperature and dyeing time and other factors will cause changes in color and hue, which will affect the dyeing quality [4]; The process is long and the pollution is heavy. Paint dyeing has simple process, bright color, short process, low requirements on equipment, complete chromatogram, high sublimation fastness and fast light fastness, strong adaptability to fiber, good reproducibility, and less waste water discharge. Advantage [5], very consistent with the current production concept of energy saving and emission reduction. However, the dyeing of the paint has the disadvantages of low rubbing fastness and hard feel of the dyed fabric. To this end, the use of technical measures such as cationic modification to overcome its shortcomings, made a dyed yarn for knitting denim. The production process of paint dyeing yarn is as follows: yarn pretreatment→cation modification treatment→water washing→dyeing (1)→dyeing (2)→liquid absorption→wet splitting→prebaking→baking→storage→drying Winding → into a tube. GMa52SJ
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