Flax fabric dyeing and finishing process

Abstract

The invention discloses a flax fabric dyeing and finishing process including pretreatment, pre-sizing, modification treatment, dyeing, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. Ultrasonic waves are used for pretreatment, and at the same time, the modification treatment step is added; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; montmorillonite is used for modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high; and an anti-yellowing reagent is used in the processes of pre-sizing, sizing and post-finishing, so that a final fabric does not easily turn yellow.

Description

technical field [0001] The invention relates to a dyeing and finishing process of flax fabrics. Background technique [0002] Fibers are divided into chemical fibers and natural fibers. Chemical fibers are fibers with textile properties made from natural polymer compounds or artificially synthesized polymer compounds through the processes of preparing spinning dope, spinning and post-treatment. Chemical fibers have the advantages of light resistance, wear resistance, easy washing and drying, no mildew, no moths, etc., and are widely used in the manufacture of clothing fabrics, filter cloths, conveyor belts, hoses, ropes, fishing nets, electrical insulation threads, medical sutures , tire cord and parachute etc. Natural fibers refer to fibers that exist and grow in nature and have textile value. Flax is a pure natural fiber. Because of its remarkable characteristics such as sweat absorption, good air permeability and harmlessness to the human body, it has been more and more...

AI Technical Summary

Problems solved by technology

[0003] During the dyeing process of flax, in order to reduce environmental pollution, the use of natural dyes is currently being studied, but natural dyes usually need to be dyed at a lower temperature, and the dyeing effect of natural dyes is poor, and the dyed fabrics have poor color fastness. Low, in order to improve the color fixation, a large amount of soda ash and inorganic salts are usually added in the dyeing process, which brings great difficulties to the treatment of printing and dyeing wastewater with high salt content, such as direct discharge will destroy the ecological environment, resulting in soil salinity At the same time, natural dyes usually use some heavy metal ions as mordants, which do not meet the requirements of current ecological textiles, and the shade of fabrics after heavy metal ions mordant dyeing mostly becomes dim, affecting the brightness and aesthetics of dyed fabrics

In order to reduce the dyeing difficulty of the subsequent dyeing process, the fiber fabric usually needs to be pretreated before dyeing, but the current pretreatment basically uses alkaline solutions such as hydrosulfite and sodium carbonate for high temperature pretreatment, which will cause less damage to the fiber. Big

[0004] And, linen fabric, due to its own characteristics, is easy to wrinkle, and it is easy to turn yellow after absorbing sweat. Therefore, it is necessary to improve this defect.