The use of textile fabrics is stained during use, and some stains cannot be removed by conventional water washing or dry cleaning methods. In this case, appropriate detergents or chemicals should be selected for partial removal.
I. Principle of stain removal
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According to different fiber materials, different stains, using different detergents to remove stains.
1. Remove stains as timely as possible
After the fabric is stained with stains, it must be promptly removed. For too long, the stains will penetrate into the fibers and bind the fibers firmly. Even chemical reactions may occur and they cannot be removed.
2. Different types of stains take different measures
The same stains on different fabrics, the choice of detergents and methods vary. According to the nature of the stain and the type of fabric, choose the appropriate decontamination method and detergent.
3. Different kinds of fabrics take different measures
Some detergents are detrimental to some fibers or shades. It is necessary to understand the fiber composition of the fabric before selecting the proper decontamination agent and method.
4 action should be brisk, avoid vigorous hard brush
When decontamination, the movement should be light, wipe from the periphery of the stain to the center to prevent the spread of stains.
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II. General method of stain removal
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Different fabrics should use different decontamination methods. At present, the main methods of stain removal include spraying, soaking, wiping and absorption.
Spray method
A method of removing water-soluble stains by the action of a spray gun spray force. Suitable for fabrics with tight structure and strong ability to withstand.
2. Immersion method
The use of chemicals or detergents and stains on the fabric have sufficient reaction time to achieve the removal of stains. It is suitable for fabrics with a combination of stains and fabrics and a large stain area.
3. Swab method
Wipe the stain with a brush or a clean, fine cloth to remove the stain. It is suitable for fabrics where the stain penetrates lighter or easier to stain.
Absorption
After applying detergent to the stains on the fabric, dissolve it and then absorb the removed stains with cotton. It is suitable for fabrics with fine texture, loose structure and easy discoloration.
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Three. Attention should be paid when removing stains
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(a) pay attention to safety
Gasoline, alcohol, turpentine, etc. are flammable products. Keep away from fire when using and storing. The oxalic acid should pay attention to anti-virus, and organic detergents should be sealed after use to prevent evaporation.
(B) pay attention to the nature of detergents and use of methods
Strong acids will cause carbonization of cotton, hemp, viscose, and other fabrics. Attention should be paid to concentration, temperature, and time. Silk, wool fiber fabrics do not use ammonia or alkaline water stains, if necessary, the concentration must be low, the operation should be fast. When removing stains on chemical fiber fabrics with organic solvents, prevent the fabrics from dissolving and causing breakage. Dyeing and printing fabrics should prevent fading and coloring.
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