The chlorine washing process is one of the technical means to make gloves smoother and more convenient to wear. In the 1980s, this process first appeared on latex gloves. Nitrile gloves, which were born in the 1990s, use different materials from latex gloves. Can they use the chlorine washing process in production?
Whether it is natural rubber or synthetic rubber, chlorine washing process can be used. Chlorine washing uses a chlorine-containing solution to react with the surface of the rubber, turning it into another substance. Nitrile is a kind of synthetic rubber. After the cross-linking reaction occurs on the surface of the glove and the solution such as hypochlorous acid, a thin film is formed on the surface of the glove instead of the glove material to contact the hands. The friction is smaller, which makes us wear more convenient.
Nitrile gloves using chlorine washing process are currently on the market. Not only does the glove wear smoothly, but the wearing experience is also good.
The chlorine washing process can replace the existing coating process and can reduce the cost of gloves. The earliest chlorine washing was to prepare the chlorine washing liquid by passing chlorine gas into the water. This method requires the operator to pass the chlorine gas into the water. There is a risk of chlorine escaping, and the storage of chlorine cylinders is also more troublesome. With the development of the production process, the first stage has been developed. The process of hydrochloric acid + sodium hypochlorite is equipped with a process of chlorine washing liquid to generate chlorine to replace the original direct The method of using chlorine gas.
The chlorine generator needs to use hydrochloric acid and sodium hypochlorite. The two agents are added at a certain ratio and mixed with the pure water in the chlorine washing tank. After a period of circulation, the chlorine lotion configuration is completed.
When the hand mold enters the chlorine washing tank, the chlorine lotion will contact the hand mold. The chlorine lotion contains chlorine gas. The chlorine gas will adhere to the nitrile glove in the form of bubbles and react with the original surface of the nitrile glove. The surface of the glove that was originally sticky will become smooth.
The daily consumption of hydrochloric acid for each production line is about: 80kg, the consumption of sodium hypochlorite is about 160kg, and the amount of chlorine volatilization is about: 5KG.
During the production process, the chlorine will slowly volatilize. The top of the chlorine washing tank is equipped with a sealing cover and a ventilation system to keep the chlorine washing tank in a negative pressure state, so that the chlorine does not overflow. The chlorine in the chlorine washing tank is introduced to the outdoors through the pipeline In the bipolar absorption tower, the absorption tower adds flake caustic soda as the absorption liquid. After treatment, chlorine emission concentration: less than or equal to 65mg/m³; hydrogen chloride emission concentration: less than or equal to 100mg/m³. The absorption liquid after acid-base neutralization is discharged into the sewage treatment system after a certain period of use.
Post time: Oct-18-2021