High temperature overflow printing and dyeing defoamer

Defoamer for textile can workable at over 100℃？yes or no?

Printing and dyeing process:
Raw cloth preparation → Singeing → Refining → Bleaching → Setting → Satinization → Dyeing and printing →Finishing.
Here will show INVELY-6200 which is workable over 100℃ with good performance.

Desizing

The main role of desizing: remove slurry as much as possible, creating favorable conditions for subsequent processing.
Common alkali desizing principle: The slurry swells under the action of hot alkaline solution, from the gel state to the sol state, and becomes loose with the fiber, which is easy to wash off. Foaming occurs more during desizing, and the application of defoaming agents is mainly concerned with the pH and temperature of the foaming environment. INVELY-6200 is recommended when the temperature is higher than 90 ° C.

Dyeing

According to the temperature can be divided into: normal temperature dyeing (room temperature), medium temperature dyeing (60-100 ℃), high temperature dyeing (about 130 ℃). Dyeing equipment: dyeing tank, continuous pad dyeing car, high temperature and high pressure overflow dyeing tank, etc.
High-temperature dyeing, requirements for defoamers: long foam suppression time, good acid and alkali resistance, good dispersibility, can not cause silicon spots caused by precipitation. INVELY-6200 is well deserved.

Finishing (after finishing)

Finishing mainly includes tentering, softening and pre-shrinking. Among them, the use of softeners / soft tablets will generate a lot of foam and the temperature is high. Here, defoamers are recommended to pay attention to the softener ion type. Most of the Sister products are anionic and nonionic products.
Below is the defoamer for textile invely-6200 TDS . if you have interested, please could you check, thanks:
Download INVELY-6200-TDS
https://www.linkedin.com/company/china-defoamer
https://www.ywlchemical.com/industries/textiles/

此博客中的热门博文

The magical effect of fumed silica in silicone rubber

The magical effect of fumed silica in silicone rubber Fumed silica is one of the most important high-tech ultra-fine inorganic new materials. Due to its small particle size, it has a large specific surface area, strong surface adsorption, large surface energy, high chemical purity, good dispersion performance, thermal resistance, It has specific properties in terms of electrical resistance, etc. Its superior stability, reinforcement, thickening and thixotropic properties are unique in many disciplines and fields and have an irreplaceable role. Today, Xiaobian will work with you to learn how to apply fumed silica in silicone rubber. Application of fumed silica in high temperature vulcanization (HTV) silicone rubber The use of fumed silica can be divided into silicone materials and other fields, in which the amount of silica in the silicone material is nearly 60%, and the silicone rubber is the most used material in the silicone material. It can be added in an amount of up to 50% ...

阅读全文

How do we assess antifoam efficiency ?

How do we assess antifoam efficiency ? Quality of an antifoam is given by two main characteristics : • Knockdown ability or shock effect :Meaning the speed to destroy an existing foam. • Persistence or durability : Meaning the efficiency over time. These two parameters can be assessed by several tests. The main test is the bubbling method. A graduated column with a glass frit in the bottom is required. Foaming water is poured in the column and air at constant flowrate is introduced through the glass frit in the column. Foam is generated by the air and starts to travel up the column. At a determined level of foam, antifoam is injected. By this method several antifoaming agents can be tested. A graph reporting foam height vs time is very helpful to establish the knockdown ability and the persistence for each product. The selected antifoam is the product with the best compromise between shock effect and durability Environmental performance Silicone antifo...

阅读全文

Why is there foam in the paint and coating? What we should do to eliminate foam?

Why is there foam in the paint and coating? What we should do to eliminate foam? check below details: Surface tension The surface tension of the coating has a great influence on the defoaming agent. The surface tension of the defoaming agent must be lower than the surface tension of the coating. Otherwise, there is no defoaming and foam suppression. The surface tension of the coating is a variable factor, so a constant surface tension is required when using the defoamer, and then the surface tension variation factor is taken into account. The influence of other additives Surfactants used in coatings are mostly functionally incompatible with defoamers. In particular, emulsifiers, wetting and dispersing agents, leveling agents, thickeners, etc., have an effect on the effect of the antifoaming agent. Therefore, we must pay attention to ...

阅读全文

defoamer-antifoam

搜索此博客