1, can not reach the feel
The soft style of soft finishing varies with customer requirements, such as soft, smooth, fluffy, soft, smooth, smooth, etc. Different softeners are used depending on the style. In the film, softener films with different structures have different softness, bulkiness, slip, yellowing, and water absorption of the fabric. In silicone oil, the properties of modified silicone oils of different modified genes are also different, such as amino silicone oil, hydroxy silicone oil, epoxy modified silicone oil, carboxyl modified silicone oil and the like.

2, color change yellowing
In the film, the cationic film is soft and has good hand feeling, and is easily adsorbed on the fabric, which is easy to yellow and discolor, and affects hydrophilicity. Amino silicone oil is currently the most widely used silicone oil, and the amino group will cause discoloration and yellowing. In the emulsion polymerization, cationic surfactants such as 1227, 1831, and 1631 are sometimes used as emulsifiers, and these emulsifiers also cause yellowing. When the silicone oil is emulsified with different emulsifiers, its "stripping effect" is different, which will cause peeling and light color under different conditions, which is a color change.

3, fabric hydrophilicity decreased
Generally, the problem of the structure of the film used and the lack of the water-absorbing gene after the silicone oil is formed, and the absorption of the water-absorbing center such as the hydroxyl group of the cellulose fiber, the carboxyl group on the wool, and the amino group cause a decrease in water absorption.

Treatment method: Anionic, nonionic film and hydrophilic type silicone oil should be used as much as possible.

4, dark spots
Causes: 1 The fabric oil stains were not cleaned before the treatment, and the oil stains were darker when dyeing. 2 The foaming bath has too much foam, and the foam is mixed with the flower sweater, dye and the like on the fabric. 3 antifoaming oil floating oil causes dark oil spots. 4 The tar in the dyeing tank is stained on the fabric. 5 dyes agglomerate under different conditions to form dark spots. 6 water calcium and magnesium ions and dye combined with the fabric and other reasons.

Treatment method: 1 before the treatment, add degreaser for refining. 2 dyeing auxiliary uses low foam, no foaming auxiliary. 3 defoamer chooses the type that is not easy to float oil, add chelating agent to improve water quality, and add dissolving dispersant to prevent dye agglutination. Clean the cylinder with the cleaning agent in time.

5, light spots
Causes: 1 pre-treatment is uneven, some parts of the hair is not good, resulting in a certain degree of rejection, with a repellent substance. The pre-treatment has calcium soap, magnesium soap, etc. or uneven mercerization on the cloth. 2 Semi-products are unevenly dried. 3 The cloth surface is stained with solids such as undissolved yuan powder and soda ash. 4 Dip the water before drying. 5 The dyeing agent is treated with softening treatment, etc.

Treatment method: Strengthen the pre-treatment, the calcium-magnesium soap must not form easily when the pre-treatment auxiliary is selected, and the pre-treatment must be uniform and thorough (this is related to the selection of scouring agent, penetrant, chelating dispersant, mercerizing penetrant). Yuanming powder, soda ash, etc. must be put into the tank and the production management must be strengthened.

 
6, alkali spots
Cause: Before the treatment (such as bleaching, mercerizing), the alkali is not clean or uneven, resulting in alkali spots.

Treatment method: The de-alkali process of the pre-treatment process must be strengthened.

 7, softener stains
Cause: The film material is not good, and a block softener adheres to the fabric. There is too much foam after the soft film material, and the cloth is covered with soft foam foam when the cloth is out of the cylinder. The water quality is not good, the hardness is too high, and the impurities in the water are combined with the softener to agglomerate on the fabric. The cloth has an anionic substance, which is combined with a cationic softener to form a stain during soft processing, or a base with a base to make the softener agglomerate. The softener has a different structure, and at a higher temperature, the softener is changed from an emulsified state to a slag adhered to the fabric or the like. The original tar-like softener in the cylinder falls off and sticks to the fabric.

 8, silicone oil stains
Cause: The PH value of the fabric is not neutral, especially with alkali, causing the silicone oil to break the emulsion. The treatment bath is too poor in water quality and the hardness is too high. The silicone oil is very easy to float in water of >150 PPM hardness. Silicone quality problems include poor emulsification (poor emulsifier selection, poor emulsification process, too large emulsified particles, etc.) and are not resistant to shearing. Select silicone oil that is resistant to shear, electrolyte and pH. However, pay attention to the use and environment of silicone oil. Hydrophilic silicone oil can also be considered.

9, poor hair growth
Poor hair growth is closely related to the operation of the hair raising machine (such as tension control, raising roller speed, etc.). When the softener (commonly known as waxing), it is the key to control the dynamic and static friction coefficient of the fabric. Therefore, the preparation of the hair softening agent is the key. If the softener is used poorly, it will directly cause poor hair growth.