Denim washing process

1. General washing is ordinary washing. Just change the washing that we are familiar with on weekdays to mechanization. The water temperature is about 60°-90°C, add a certain amount of detergent, and after about 15 minutes of ordinary washing, add softener to clean water to make the fabric Softer, more comfortable, and visually more natural and cleaner. Generally, according to the length of washing time and the amount of chemicals, general washing can be divided into light general washing, general washing, and heavy general washing. Usually, the light and general washing is about 5 minutes, the general washing is about 15 minutes, and the heavy general washing is about 30 minutes.

2. Stone washing/stone washing (STONE WASH) Stone washing means adding a certain size of pumice stone to the washing water to polish the pumice stone and the clothes. contact with clothing. It can be washed or rinsed before stone grinding, or rinsed after stone grinding. According to the different requirements of customers, yellowstone, white stone, AAA stone, artificial stone, rubber ball, etc. can be used for washing to achieve different washing effects. .

3. ENZYME WASH Enzyme is a kind of cellulase, which can degrade the fiber structure under a certain pH value and temperature, so that the cloth surface can be gently faded, fading (producing "peach skin") effect) and get a long-lasting soft effect. Stones can be used in combination or in place of stones. If used together with stones, it is usually called ENZYME STONE WASH. The former is to use a spray gun to spray each potassium permanganate solution on the clothing according to the design requirements, and a chemical reaction occurs to cause the fabric to fade. The degree of fading is controlled by the density and the ejection amount. Sandblasting is also called sandblasting. Sand the cloth with special equipment (a large electric toothbrush, just a roller type). There is usually an inflatable model fit. In terms of effect, the former fades evenly, the surface and inner layers are faded, and a strong fade effect can be achieved. The latter only has fading on the surface, and physical damage to the fibers can be seen.

4. Sand washing should use some alkaline and oxidizing auxiliaries, so that the clothes will have a certain fading effect and a sense of staleness after washing. Fluff, and then adding some softeners, can make the fabric soft and soft after washing, thereby improving the comfort of wearing.

5. Chemical washing (CHEMICAL WASH) chemical washing mainly uses strong alkali additives (NaOH, NaSiO3, etc.) to achieve the purpose of fading. After washing, the clothes will have a more obvious sense of staleness, and then adding softener, the clothes will be soft, plump effect. If stones are added to chemical washing, it is called CHEMICAL STONE WASH, which can enhance the effect of fading and abrasion, so that the clothes have a strong sense of old age. Fossil washing combines chemical washing and stone washing effects. Can achieve a distressed and fluffy effect after washing.

6. BLEACH WASH In order to make the clothes have a white or bright appearance and a soft feel, the clothes need to be rinsed, that is, after ordinary washing with clean water, heat to 60 ° C, and add an appropriate amount according to the depth of the bleaching color. Bleaching agent, 7-10 minutes to make the color consistent on the board. During operation, the direction of adding the bleaching agent should be consistent with the direction of the rotating cylinder, so as to avoid the bleaching agent directly falling on the clothes because it cannot be diluted with water as soon as possible, resulting in partial bleaching. Before bleaching, the water level in the tank should be slightly higher so that the bleach can be diluted. After the clothes are bleached, the residual bleaching water in the water is neutralized with large (small) soda (Na2CO3, NaHCO3) to stop the bleaching completely. After the clean water, add detergent, fluorescent whitening agent, hydrogen peroxide, etc. to the water temperature of 50 ° C for final washing, neutralize the pH value, fluorescent whitening, etc., and finally perform softening treatment. Rinsing can be divided into oxygen bleaching and chlorine bleaching. Oxygen bleaching is to use the oxidation of hydrogen peroxide at a certain pH value and temperature to destroy the dye structure, so as to achieve the purpose of fading and whitening. Generally, the surface of the bleached cloth will be slightly reddish. Chlorine bleaching is to use the oxidation of sodium hypochlorite to destroy the dye structure, so as to achieve the purpose of fading. Chlorine bleach has a rough fading effect and is mostly used for rinsing indigo denim. After bleaching the board, the residual chlorine in the water and clothing should be neutralized with sea waves to stop the bleaching, and then stone grinding is performed after bleaching, which is called BLEACH STONE.

7. After the DESTROY WASH garments are polished with pumice stones and treated with additives, some parts (bones, collar corners, etc.) will be damaged to a certain extent, and the clothes will have a more obvious dilapidated effect after washing.

8. Soak the dried pumice stone with potassium permanganate solution, and then polish it directly with the clothes in the special rotating cylinder, and polish the clothes on the clothes through the pumice stone, so that the potassium permanganate oxidizes the friction points, so that the cloth surface is not Regular fading to form white spots resembling snowflakes.

The general process of snowflake washing is as follows: soaking the pumice stone with potassium permanganate - dry grinding between the pumice stone and the clothes - the snowflake effect on the board - taking out the clothes and washing the stone dust on the clothes with clean water in the washing tank - oxalic acid neutralization - Wash with water - Apply softener.

9. MOUSTACHE EFFECT is WHISKER, but WHISKER is more professional. Cat whiskers are a type of hand sand (hand rub, HAND BRUSH), which is just ground into the shape of cat whiskers.

10. Sandblasting, also known as sand blasting (SPRAY STONE WASH / SAND BLAST), is to use special equipment (image speaking, it is a large electric toothbrush, but it is a roller type) on the cloth, usually with an inflatable model. .

11. The essential difference between MONKEY WASH and sandblasting is that the former is a chemical effect, and the latter is a physical effect. The spray gun is to spray the potassium permanganate solution on the clothing according to the design requirements with a spray gun, and a chemical reaction occurs to cause the fabric to fade. The degree of fading is controlled by the concentration and spray amount of potassium permanganate. From the point of view of the effect, the fading of the spray horseliu is uniform, the surface layer and the inner layer have fading, and a strong fading effect can be achieved. The sandblasting only has fading on the surface layer, and physical damage to the fiber can be seen.

12. Pigment wash / pigment dyed wash is also called "single-sided coating / paint dyeing", which means that this washing method is specially designed for clothing dyed with paint, and its function is to consolidate the original Brilliant color and softness to the touch.