Requirements on fabrics for three-proof and easy stain removal finishing of pure cotton thick fabrics
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Textile pure cotton fabric three-proof finishing
TextilesBefore carrying out contamination repellent and decontamination finishing, the cleanliness of the fabric should be ensured, and the fabric does not contain slurry Materials, alkalis and other additives that may affect the three-proof effect. The wetting agent used in the pre-treatment process should be easily washed away, and the cloth surface should be weakly acidic. It is strictly forbidden to use silicone defoaming agents during the dyeing process. The semi-finished products should meet the following physical indicators before finishing:
1)Cloth surfacePH The value is between 6.5-7.0. After dyeing, add a pickling process. During pickling, the temperature reaches 50°C, which increases the speed at which the neutralizing acid penetrates into the fiber and floats on the surface of the fiber. The inside of the fiber reaches a weak acidity.
2) The alkali content of the cloth should be controlled within 0.05%. Pure cotton fabric Dyeing is completed in an alkaline state. The alkali content of the cloth surface is very high, generally above 0.5%. During pickling, the fabric is padded to neutralize the acid and the fabric is given a certain reaction time. Finally, strengthen water washing to fully wash away the salt produced by the reaction on the fabric and reduce the impact on stain-repellent finishing.
3) The fabric has a moisture content controlled within 1% and is uniform. It is very important to control the moisture content of the fabric before finishing. Very dry fabric fibers have poor puffiness and low liquid absorption, which reduces the finishing effect. Excessive moisture content will also reduce the liquid content of the fabric, which also affects the finishing effect. A certain moisture content is beneficial to the penetration and diffusion of the finishing fluid during padding. When carrying out three-proof finishing with fluorine-containing compounds, the semi-finished products must be fully washed away from the glue, starch, slurry and surfactants used in the pre-treatment, because the residual anionic impurities will affect the weak cationic fluorine-containing three-layer coating. The effect of anti-finishing agent.
4) The instant wool effect of the fabric must be within 10 seconds. The padding finishing solution only lasts for a few seconds. The instant wool effect of the fabric is required to be good in order to adapt to the high-speed operation of the equipment. At the same time, the finishing agent solution state is required to have good wettability of the fiber to cooperate with the high-speed processing of fabric dyeing and finishing.
The three-proof fabric produced by City Textile has good oil-proof, waterproof and anti-fouling functions, and can be produced using Teflon technology and provided Teflon hangtag.
：City
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