In order to reduce the influence of resin finishing, silicone oil is often added to improve brightness, smoothness and tear strength, mainly amino silicone oil, breast milk hydroxyl silicone oil or compound silicone oil softener, and now it is also applied with multi-component silicone oil. In application, in addition to selecting suitable silicone oil, we should follow the correct component dilution process, and use it after 1-2 hours. Before use, it is necessary to check the floating objects and stratification on the surface of the liquid medicine, and also check whether the state of the liquid medicine changes during the soaking process of clothes. It is recommended to use a dipping machine or a spraying machine. In addition to the structure, cation and emulsification degree of silicone oil, the demulsification of bleaching oil is mainly caused by the anion of resin, the strong electrolyte of catalyst, the hardness of water and PH value of clothes and fabrics, and other interfering chemicals. Due to the high temperature setting, there is no good way to eradicate the silicon spot problem after the completion of the non-ironing process, mainly by initial inspection and strict implementation of the process.
When the washing is too soft, the general fermentation washing process has fewer problems than the general washing process because of the previous process environment. In general water washing process, alkaline agent is often used for desizing. If the alkaline agent is not sufficiently removed, problems will easily occur. In other processes, if there are processes such as color matching, bottom bleaching, stir-frying, and stirring and bleaching before softening, strong electrolyte sodium sulfate, coarse salt are used to promote dyeing or soda ash, caustic soda, phosphate fixation, or strong oxidants such as high manganese are used. In this regard, we adhere to the principle that clothes should be thoroughly washed with water before softening, and if necessary, the last clean water before softening should be adjusted with appropriate amount of acetic acid or penetrant (or factory oil). In operation: after adding silicone oil to the water machine, it is not allowed to turn on steam to raise the temperature; The softening temperature shall not exceed 60℃ (conventional silicone oil); Anionic additives, such as anionic penetrant, chelating dispersant, etc. Cannot add; Try to avoid adding strong electrolyte raw materials such as salt, soda ash and caustic soda. ; Silicone oil should be added in the case of transfer; Do not stop the machine when softening and draining.
Here is an intuitive method to judge whether amino silicone oil is fully emulsified: dilute silicone oil by 5 to 10 times, let it stand for 30 minutes, and observe the surface of the diluent. Be careful when using this silicone oil if there is oil slick or wire drawing.
At present, the effective and low-cost method to remove silicon spots is to spray gasoline on the silicon spots on the clothes, and then put the clothes in a sealed plastic bag or a closed vat with enough gasoline at the bottom. After 20-60 minutes, take out the clothes from the washing machine and wash them with sufficient detergent. The effect of removing silicon spots is ideal, but there is a problem of residual gasoline smell, which can be fully washed with emulsified detergent or covered with essence. In addition, if the fabric contains polyester fiber and has not been ironed, it can be fully soaked in isopropanol and cleaned after 20-24 hours. This method has little damage to polyester. Non-ironing cotton fabrics can also be soaked in isopropanol. Due to the time problem, the effect evaluation of other desolventizing tests has not been done yet, which needs everyone to practice.