DuPont Washing Label

General washing refers to ordinary washing, which simply replaces the familiar washing with mechanization. The water temperature is around 60 ° -90 ° C, and a certain amount of detergent is added. After about 15 minutes of ordinary washing, a soft agent is added to the washed fabric to make it softer, more comfortable, and visually more natural and clean. Usually, based on the length of washing time and the amount of chemicals used, regular washing can be divided into light regular washing, regular washing, and heavy regular washing. Usually, light washing takes about 5 minutes, regular washing takes about 15 minutes, and heavy washing takes about 30 minutes. (This time is not precise) There is no clear boundary between washing methods.

Stone washing is the process of adding a certain size of floating stones to the washing water to polish the clothes. The water level in the polishing tank is at a low level where the clothes are completely soaked, so that the floating stones can come into good contact with the clothes. It can be washed or rinsed before grinding, or rinsed after grinding. According to different customer requirements for washing labels, yellow stone, white stone, AAA stone, artificial stone, rubber balls, etc. can be used for washing to achieve different washing effects. After washing, the fabric surface presents a gray and aged feeling, and the clothes have slight to severe damage.

Enzymes are a type of cellulase that can degrade fiber structures at a certain pH and temperature, allowing the woven fabric surface to fade and shed hair more gently (producing a "peach skin" effect), and achieve long-lasting softness. Stones can be used in combination or as a substitute for stones. If used in combination with stones, it is commonly referred to as Enzyme Stone Wash.

Sand washing often uses alkaline and oxidizing agents to achieve a certain fading effect and a sense of aging after washing and labeling clothes. If combined with a stone mill, a soft, creamy white fuzz will be produced on the surface of the fabric after washing. Adding some softeners can make the washed fabric soft and gentle, thereby improving the comfort of wearing Sand washing agent a) Puffing agent: The puffing agent and concentration, temperature, time, and other puffing conditions are selected based on the type of fiber, fabric structure, and tightness. Alkaline puffing agents such as soda ash can be used for puffing pure cotton clothing during sand washing. b) Sanding agent: After the clothing is puffed, the fibers become loose, and then special sanding is used for friction to make the loose surface fibers produce full and soft fuzz. To make the velvet full, different shapes and hardness of sand powder must be selected, such as diamond shaped sand (to make loose fibers produce fuzz), polygonal sand (to make the fuzz stand upright), and circular sand (to make the fuzz full). c) Softener: A softener used for sand washing. The requirement is to achieve softness and stickiness, so that the fabric can increase weight and significantly improve drape. Therefore, this type of softener has a long carbon chain and cationic properties, which can adsorb on fabrics and achieve the purpose of weight gain For industrial use, sand washing equipment is generally used in industrial washing machines for puffing, sand washing, and softening treatment. Centrifugal pumps are used for dewatering, and rotary dryers for drying goose down are used in knitting factories The sand washing process for cotton clothing can determine the type, dosage, temperature, and time of puffing agent, as well as the dosage and processing temperature and time of sand washing powder and softener, based on the organizational structure, warp and weft density, yarn count thickness, and twist strength. Generally speaking, the sand washing effect of yarn fabrics is better than that of thread fabrics, coarse count yarns are better than high count yarns, low twist is better than high twist, and floating point long products are better than floating point short products.

Chemical washing mainly achieves the purpose of fading by using strong alkaline additives (NaOH, NaSiO3, etc.). After washing, the clothes have a noticeable sense of aging, and adding softeners will make the clothes soft and plump. If stones are added to chemical washing, it is called Chemical Stonewashing, It can enhance fading and wear effects, making clothes have a strong sense of aging. Fossil washing combines chemical washing and stone washing effects, and can achieve a simulated aging and pilling effect after washing.

Rinsing can be divided into oxygen bleaching and chlorine bleaching. Oxygen bleaching uses the oxidation effect of hydrogen peroxide at a certain pH and temperature to destroy the structure of dyes, thereby achieving the purpose of fading and whitening. Generally, the surface of the bleaching cloth will slightly turn red. Chlorine bleaching uses the oxidation effect of sodium hypochlorite to destroy the structure of dyes, thereby achieving the purpose of fading. The fading effect of chlorine bleaching is rough and often 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 bleaching. After bleaching, stone grinding should be carried out, which is called BLEACH STOP WASH.

After being polished with floating stones and treated with additives, finished garments or washed labels may suffer some degree of damage in certain areas (such as bones and collar corners), resulting in a noticeable aging effect after washing.

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