How to control the cleanliness of electronic grade methyl methacrylate filling line?

Electronic grade methyl methacrylate filling line cleanliness how to control?

In the chemical industry, electronic grade methyl methacrylate (MMA) is a high purity, high performance chemicals, widely used in electronics, optics, coatings and other fields. Due to its importance in the manufacture of electronic products, the production environment and filling process of MMA require strict control of cleanliness to ensure the purity and performance of the product. This paper will analyze the control method of the cleanliness of the electronic grade MMA filling line in detail from many aspects.

1. production environment cleanliness requirements and design

The production environment of electronic grade MMA needs to meet the standards of high-grade clean rooms. The design of the workshop needs to follow the principles of dust-free and sterile, and adopt anti-static, moisture-proof and dust-proof materials. Temperature and humidity control is also a key factor. The production of MMA has strict requirements on the environmental temperature and humidity, which usually needs to be controlled within a constant range to avoid physical or chemical changes in the product due to environmental changes.

The air purification system is the core facility to ensure cleanliness. Multi-stage filtration systems, including primary, intermediate and high-efficiency filters (HEPA or ULPA), are usually used to ensure that the concentration of particulate matter in the air meets the requirements. Regular maintenance of the air purification system and replacement of the filter element can effectively prevent the accumulation of pollutants.

2. equipment and tooling of clean management

In the filling process of electronic grade MMA, the cleanliness of equipment and tooling directly affects the quality of the product. Filling equipment needs to be selected in line with GMP (good manufacturing practice) or higher standards of equipment, these equipment usually have anti-static, anti-corrosion, easy to clean the characteristics.

Cleaning and disinfection of tooling is also a key link. Before filling, all tools (such as pipes, containers, valves, etc.) that come into contact with MMA need to undergo strict cleaning and disinfection procedures. Usually use deionized water, clean steam or special cleaning agent for cleaning, and through high temperature sterilization or chemical disinfection to ensure its cleanliness.

3. operation process specification management

Human factors are one of the important factors affecting cleanliness. In the filling process of electronic grade MMA, operators need to receive professional training in clean operation and understand the basic requirements of cleanliness control. For example, operators need to wear dust-free clothing, sterile gloves, masks and other protective equipment to reduce the risk of human contamination.

Every link in the filling process needs to be strictly implemented in accordance with the operating procedures. For example, the equipment needs to be inspected before filling to ensure that the equipment is in normal operation; the pressure, flow and other parameters need to be monitored in real time during the filling process to ensure the uniformity and accuracy of the filling; after the filling is completed, it is also necessary to The equipment is cleaned and disinfected to prevent the residue from polluting the next batch of production.

4. packaging and storage of clean protection

Even if high cleanliness is achieved in the production process, problems in packaging and storage may still affect the quality of the product. Therefore, MMA packaging needs to use high-quality packaging materials, such as food-grade plastic drums or aluminum foil bags, and the packaging materials need to be cleaned to ensure dust-free and sterile.

In the storage process, it is necessary to pay attention to the environmental control of the warehouse. Electronic-grade MMA should be stored in a dry, cool, and well-ventilated environment, avoiding direct sunlight and high temperature and humidity to prevent physical or chemical changes to the product. Storage areas also need to maintain a certain degree of cleanliness, regular cleaning and disinfection.

5. Quality Inspection and Traceability System

In order to ensure that the cleanliness of electronic grade MMA meets the standard requirements, strict quality inspection is required during the production process. For example, the concentration of particulate matter in the air can be detected by a particle counter, and the purity and impurity content of MMA can be detected by an online analyzer. Establish a complete traceability system to record the production, inspection, packaging, storage and other information of each batch of products, so that when problems occur, they can quickly trace and take corresponding measures.

The high purity requirements of electronic-grade methyl methacrylate make it extremely challenging for the cleanliness of the production environment and operating processes. Through scientific design, strict management, standardized operation and advanced testing methods, the cleanliness of the filling line can be effectively controlled to ensure that the product quality meets international standards. For chemical companies, this is not only a technical requirement, but also a test of management and responsibility.