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How to wash away the handwriting of signature strokes on school uniforms?
Method:

1. Alcohol+soap

2. Cleaning agent

3. Gasoline

4. Toothpaste

Sliced lemon

6. White vinegar

Use one of the methods to smear on the signature handwriting, and then rinse it with water.

alcohol

First, pour alcohol on the scratch of the fountain pen on the clothes. Alcohol should be medical alcohol with a concentration of not less than 75%.

Try not to touch other sides of the clothes, or the marking color of the pen may be dyed to other parts of the clothes.

Then wash it with clear water.

Toothpaste+soap

Soak clothes in cold water, apply soap and gently scrub them, and repeat this for two or three times.

Then use a toothpaste brush.

It can basically be removed.

Signature pens can be divided into

1. Water-based pens are generally used on paper, but they are easy to be erased when used on whiteboards or samples.

2. Oily pens are generally used for sample signature or other permanent marks. Oily pens are difficult to wipe, but they can be cleaned with alcohol.

Pigment for signature pen

Pigment plays a coloring role in ink, which has a direct impact on some characteristics of ink.

Pigment is a highly dispersed color, black or white powder, which is insoluble in water and organic solvents. According to its source and chemical composition, it can be divided into two categories: organic pigments and inorganic pigments.

(1) Inorganic pigments are oxides of non-ferrous metals or some metal salts insoluble in metals. Inorganic pigments are divided into natural inorganic pigments and artificial inorganic pigments, and natural inorganic pigments are mineral pigments.

② Organic pigments are colored organic compounds, which can also be divided into natural and synthetic categories. Nowadays, synthetic organic pigments are commonly used, which have many varieties, full colors and better performance than inorganic pigments.

Dye is an organic compound, which is soluble in water and sometimes in organic solvents. Insoluble color precipitate can be prepared by a dye called color signature pen lake pigment, which is used to make printing ink.

Signature pen Baidu encyclopedia