1. How to deal with the silicon spots on the surface of the fabric after setting?
For silicon spots on polyester fabrics, it can be removed with degreasing agent and soda ash (use degreasing agent and treat under alkaline conditions of 80-90 degrees), or it can be removed with silicon remover and soda ash.
For pure cotton and polyester-cotton fabrics, after the silicon spots on the fabric are generally removed, the color of the fabric will become lighter, and the fabric needs to be re-dyed.

2. Silicone stains sometimes appear when amino silicone oil emulsion is used together with color fixing agent and soft oil, but not when used alone. Why?
Amino silicone oil is incompatible with additives such as color fixing agent and softening oil, resulting in floating silicone oil.
Amino silicone oil emulsion is a cationic surfactant (or weakly cationic), and many chemicals used in the dyeing process are anionic surfactants, such as: dyes (some dyes are anionic), leveling agents, diffusing agents, color fixing agent. . . , these chemicals are after dyeing and finishing processing, before softening and finishing, once the water washing is not thorough, when the cationic amino silicone oil series softener reacts with the anionic substances in the dye bath, the cationic amino silicone oil emulsion will break and the floating oil will appear soft. Spots (silicon spots), the effective way is to strengthen the full washing before softening, preferably not in the same dyeing machine for softening. After dyeing and washing, the fabric is poured out and softened in a padding car (special softening tank). It can effectively avoid or reduce the formation of soft spots (silicon spots).

3. How to deal with silicon spots on woolen sweaters?
In general, manufacturers of silicone oil and softener will develop matching silicon strippers to facilitate the cleaning of stickiness or silicon spots during operation, but most of them cannot completely solve the problem and can only alleviate it.
In the actual factory operation process, many manufacturers who successfully solve the problem use gun water and Jiebao to deal with it.

The operation process is as follows:
First use Dajie Wang gun water to soak the problem part for 10-30 minutes. During the soaking process, the gun water is very volatile, so it should be sealed as much as possible, and then washed gently. If there is no gun water, you can also use Thinna water instead .
After the treatment, the problem part will still have slight traces, but use Jiebao additives to clean it. After cleaning, the fabric will smell. It needs to be dried with cold air when it is 80% dry. The whole process must be done with gloves .

4. Removal of silicone softener on knitted finished fabric?
Silicone softeners can give knitted fabrics a soft, smooth, plump and elastic feel, as well as anti-wrinkle, wear-resistant, washable, and good sewing properties, which greatly increases the added value of the product, so it is favored by customers.
The silicone softener has stable chemical properties, belongs to the non-water-soluble macromolecular structure, and has a strong ability to adsorb the fiber surface, and some active groups form chemical bonds with the fiber or undergo self-crosslinking, forming an elastic network structure with a high degree of polymerization on the fiber surface. Therefore, it is difficult to remove the silicone softener on the finished knitted fabric by ordinary methods.
However, the rate of re-dyeing and repairing of knitted fabrics is relatively high. If the silicone softener on the fabric surface is not removed before re-dying or repairing, the fabric will not be colored at all. If it is not removed cleanly, it will cause obvious coloring. Only Restaining and refinishing can be done only after silicone softener has been removed from the reworked fabric.

After trial and error and popularization and application in mass production, a method that can effectively remove silicone softener from knitted finished fabrics has been found out:
(1) Polyester fiber molecules on all-polyester knitted fabrics do not have polar groups such as hydroxyl groups. The use of strong alkaline caustic soda and silicon remover can make the removal effect of silicone softener on the fabric surface reach 4 levels, and the fabric can be re-dyeing and returning There will be no color flowers in the repair.
(2) Cotton knitted fabrics have a large number of hydroxyl groups on the cotton fiber molecules. Only by using 27.5% hydrogen peroxide, together with Akesan and caustic soda, can the chemical bonds or self-crosslinks formed between amino silicon and fibers be destroyed to achieve full emulsification and inclusion removal. The effect of silicone softener.
(3) Polyester/cotton blended knitted fabric contains both polyester and cotton fiber molecules, which are removed by Akesan AD and silicon remover.

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