How do yellowed cotton whiten? What is the way to turn white when the calico is yellow

The specific cleaning method of yellowed cotton whitening is as follows:

1. Dissolve in water with bright white and brightening laundry detergent, dilute and stir well, put in clothes, and clean the whole body;

For example, the yellowing of clothing does not improve.

2. Soaking. 1) Pure white cotton, linen, polyester clothing: Add 1 bottle cap (40g) of white clothes (600g specification) to each half basin of water (about 2 liters), stir well, soak in the clothes for 30min, and rinse clean.

If the stains are not removed after 2 hours, take out the clothes, add white clothes to the basin (add 1 cap per half basin of water), stir well, put the clothes into the clothes and continue soaking, and the cumulative soaking time does not exceed 6 hours.

2) White clothes of colored and other materials: pour a small amount of water (about liters) into the basin, measure the color stains of colored clothes (600g specification) bottle caps with colored clothes (600g specifications), add them to the water, and stir well. Soak in clothes overnight and rinse well.

Soak it in washing water overnight and wash it the next day according to the usual laundry routine. During the cleaning process, you can rub the yellowed area several times, and you can basically clean it.

Put the rice water or orange peel in the pot and boil it, soak the yellowed cloth in it and scrub it to restore its whiteness.

Add about 2 tablespoons of ammonia water when washing, soak for a few minutes, scrub it, then wash it with water, and treat it according to the general laundry procedure.

Spray a yellowed cloth with fresh lemon juice, add some salt and rub it gently, then hang it in the hot sun.

If the white cloth is a cotton fabric, it can be washed at a high temperature with a strong alkaline detergent; If the white cloth is not a cotton fabric, chlorine bleaching can be considered, and the strong oxidation effect of sodium hypochlorite can be used to destroy the structure of dyes and stains, so as to achieve the purpose of cleaning or fading. However, chlorine bleaching is often used in areas of indigo denim.

Cotton fabrics are easy to fade in life, and salt can be used to maintain the color of cotton fabrics. Salt is a fixative when dyeing cotton cloth, in order to prevent the color of the brother's tomb, the newly bought bright or dark cotton cloth can be soaked in salt or white vinegar in clean water, and so on, the color of the cotton cloth can be maintained for a long time after drying.

Salt Baking Soda: Prepare salt, baking soda and 1000 ml of water, then mix salt and baking soda into clean water, put the yellowed cotton cloth in it and soak it for half an hour, wash it according to the normal washing process, and dry it in the sun. Bleach:

Pour the bleach into a basin and soak the cotton cloth for half an hour, after soaking, take it out and rinse it well. <

1. Salt baking soda.

Prepare salt, baking soda and 1000 ml of water, then mix salt and baking soda into the water, put the yellowed cotton cloth in it and soak it for half an hour, wash it according to the normal washing process, and dry it in the sun.

2. Rice washing water orange peel.

When cooking, leave the rice washing water, then peel an orange or orange, take a pot, then boil the rice washing water and orange peel over high heat, then pour it into the basin and wait for the water temperature to drop below 40, put the yellowed cotton cloth into it and soak it for 15 20 minutes, scrub it with soap several times, and the yellow stains will slowly disappear.

3. Bleach.

Pour the bleach into a basin and soak the cotton cloth for half an hour, after soaking, take it out and rinse it well.

<> yellowing of cotton is generally caused by the large difference in temperature and humidity of the environment where cotton is stored, as well as the oxidation of cotton. The degree of yellowing of cotton usually depends on the temperature, humidity and storage time during storage, if the storage time is longer, the color of the immature cotton in the original white cotton changes quickly, thus forming light yellow spots; In addition, the envy of the acidic gas in the air and the cotton will cause the cotton to oxidize, resulting in yellowing and shivering.

Summary. The reasons for the yellowing of cotton are:1

Climatic factors: high temperature, drought, strong light and other climatic conditions have a direct impact on the growth and yield of cotton, high temperature and drought will lead to early flowering of cotton, insufficient maturity, resulting in cotton yellowing. 2.

Pests and diseases: Cotton is subjected to pests and diseases during the growth process, especially by pests and diseases such as magnificent thrips, red spiders, powdery mildew, Verticillium wilt, etc., which will cause cotton leaves to lose green, roll leaves, and fall yellow, affecting the growth of cotton, resulting in yellowing of cotton. 3.

Soil environment: cotton growth needs good soil, suitable pH value, suitable nutrient supply, appropriate irrigation and other conditions, if the soil nutrients are insufficient, high salt content, lack of oxygen, containing too much humic acid and other problems, will lead to poor growth of cotton, resulting in cotton yellowing.

The reasons for the yellowing of cotton are:1Climatic factors:

Climatic conditions such as high temperature, drought and strong light have a direct impact on the growth and yield of cotton, and high temperature and drought will lead to early flowering and insufficient maturity of cotton, resulting in cotton yellowing. 2.Pests and diseases:

Cotton is subjected to pests and diseases during the growth process, especially by the magnificent rough thrips, red spiders, powdery mildew, Verticillium wilt and other pests and diseases, which will cause cotton leaves to lose green, roll leaves, and fall yellow, affecting the growth of cotton, resulting in cotton yellowing. 3.Soil Environment:

Cotton growth needs good soil, suitable pH value, suitable nutrient supply, appropriate irrigation and other conditions, if the soil nutrients are insufficient, high salt content, hypoxic chain stool, contains too much humic acid and other problems, will lead to poor cotton growth, resulting in cotton yellowing.

The yellowing of cotton is generally caused by the large difference in temperature and humidity of the environment in which cotton is stored, as well as the oxidation of cotton. The degree of yellowing of cotton usually depends on the temperature, humidity and length of storage time during storage, in addition to containing dust and other impurities, the air also contains acidic gases, due to the effect of oxidation, the time is longer, yellowing will occur. Yellowing of cotton cloth is a sign of natural aging.

You can soak the yellowed white cotton clothes in white vinegar for a period of time, and then gently scrub them to make it white. You can also put orange peel in a pot to heat and boil, pour it out to cool, and then soak it in yellow orange water to scrub your clothes, which can also make your clothes as white as new.

Under normal circumstances, sun exposure, aging, etc. are the main reasons for the yellowing of clothes, and if the laundry detergent used for washing clothes is not cleaned, there will also be yellowing.

It is recommended to wash clothes in time, because the used clothes will not be changed and washed in time, and other substances such as sweat on the clothes will oxidize with the air, which is easy to make the clothes yellow.