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Denim washing method

Edit:Yiwu Mingrong Thread Industry Co.,LtdUpDate:Jun 06, 2018

1, universal washing is ordinary washing. Only the washing that we are familiar with on weekdays is changed to mechanization. The water temperature is around 60 -90 C, and some detergent is added. After 15 minutes of ordinary washing, water and softener can be used to make the fabric softer, comfortable and more natural and cleaner in the vision. Generally, according to the length of washing time and the amount of chemicals, general washing can be divided into light washing, general washing and heavy washing. Usually, it takes about 5 minutes to wash light and wash for about 15 minutes, and then to wash for 30 minutes. This time is not accurate. There is no clear boundary between these three methods.

2, the stone washing / stone mill (STONE WASH) stone washing is in the wash water to add a certain size of pumice, so that the pumice and clothes are worn, and the water level in the cylinder is carried out at the low water level, which is completely soaked in the clothes, so that the pumice can be in good contact with the clothes. It can be washed or rinsed before stone mill or rinsed after stone grinding. According to the customer's different requirements, we can use Huangshi, white stone, AAA stone, artificial stone, rubber ball and other washing to achieve different washing effect. After washing, the cloth face is gray and old, and the clothes are mild to severe damage.


3, ENZYME WASH enzyme is a kind of cellulase, which can degrade the structure of fiber at a certain pH and temperature, so that the cloth can fade gently, faded (producing "peach skin"), and has a lasting softening effect. It can be used as stone or substitute for stone. If it is used with stones, it is usually called ENZYME STONE WASH.


4, sand washing (SAND WASH) sand washing with some alkaline, oxidizing additives, the laundry has a certain color fading effect and obsolete feeling, if matched with stone grinding, after washing cloth surface will produce a layer of soft frost white villi, and then add some softeners, can make the fabric soft, soft and so to improve the comfort of the wear.


5, chemical washing (CHEMICAL WASH) chemical washing is mainly through the use of strong alkali additives (NaOH, NaSiO3, etc.) to achieve the purpose of fading, after washing clothes have a more obvious feeling of obsolescence, and then add softener, clothing will have a soft, plump effect. If the stone is added to the chemical washing, it is called CHEMICAL STONE WASH, which can enhance the effect of discoloration and wear, so that the clothing has a strong sense of residue, the chemical washing and the washing effect of the fossils are set in one. After washing, it can reach a kind of old and shimming fruit.


6, rinsing (BLEACH WASH) for the clothes to have a white or bright appearance and soft feel, the need to rinse the clothes, that is, after the ordinary washing of clean water, temperature to 60 C, according to the depth of the bleaching color, plus a proper amount of bleach (bleaching agent), 7-10 minutes time to the same color to the board. During operation, the direction of adding bleaching agent should be consistent with the steering of the rotary cylinder, so that bleaching agent will not fall into the clothes as soon as possible because it can not be diluted with water and there will be partial bleaching. Before bleaching, the water level in the cylinder should be slightly higher so as to dilute the floated water.  After bleaching the clothes, neutralize the residual bleach water in the water by Na2CO3 (NaHCO3), so that the bleaching will stop completely. After fresh water, the detergent, fluorescent whitening agent, hydrogen peroxide and so on are used as the last washing in the water temperature of 50 C, and the pH value and the fluorescent whitening are neutralized. Finally, the soft treatment can be done. Rinsing can be divided into oxygen bleaching and chlorine bleaching. Oxygen bleaching is the use of hydrogen peroxide in a certain pH and temperature to destroy the dye structure, so as to achieve the color fading, whitening purpose, the general bleaching surface will be slightly red. Chlorine bleaching is the use of sodium hypochlorite oxidation to destroy the structure of dyes, so as to achieve the purpose of fading. The bleaching effect of chlorine bleaching is rough, and is often used for rinsing indigo denim. After bleaching to the plate, the sea wave should be neutralized in the water and the residual chlorine in the clothes to stop bleaching and to be bleached again after the stone grinding, which is called BLEACH STONE.


7, the DESTROY WASH garment has a certain degree of breakage in some parts (bone position, collar angle, etc.) after the grinding of pumice and the treatment of auxiliaries, and the laundry will have a more obvious residual effect after washing.


8, the snowflake washes the dry pumice to soak with Potassium Permanganate solution, and then grind directly with the clothes in the special rotary cylinder, grinding it on the clothes through the pumice, making the Potassium Permanganate oxidize the friction point, making the cloth face discoloring and forming the white spot similar to the snowflake.

The general process of snowflake washing is as follows: soaking Potassium Permanganate with pumice - pumice and dry wear - snow effect on the board - take out clothes in the wash tank and wash out the stone dust on the clothes - oxalic acid and water washing - upper softener.

9, MOUSTACHE EFFECT is WHISKER, but WHISKER is more professional. The cat whisker is a kind of hand sand (HAND BRUSH). It only forms the shape of a cat's whisker.


10, the sand blasting (SPRAY STONE WASH / SAND BLAST) is used in special equipment (the image point is a large electric toothbrush, only a roller type) on the cloth, usually with an inflatable model.


11, the difference between MONKEY WASH and sandblasting is that the former is chemical, while the latter is physical. The spray is to spray the Potassium Permanganate solution into the garment according to the design requirements, and the chemical reaction will cause the fabric to fade. The concentration of Potassium Permanganate and the amount of spray are used to control the extent of fading. If the effect is divided, the spray will fade evenly and the surface layer will fade, and it will achieve a strong fading effect. And the sand is only decolor on the surface