Performance characteristics of aseptic plastic bag filling equipment
October 05 07:03:24, 2025
At present, the most common milk packaging options available in the market include Tetra Pak, roof bags, and aseptic plastic bags. Among these, aseptic plastic bag packaging has gained significant popularity due to its cost-effectiveness and consumer-friendly design. However, despite its advantages, some dairy companies have encountered challenges when selecting and operating aseptic plastic bag filling machines.
To help businesses make better-informed decisions, we will provide an in-depth overview of the key considerations when choosing high-quality aseptic plastic bag filling equipment.
First, let's look at the basic performance requirements of an aseptic plastic bag filling machine. The primary function of this equipment is to package sterilized products—such as milk—in a sterile environment, ensuring that the final product can be stored without refrigeration or preservatives for an extended period.
Specifically, the machine must meet the following standards:
1. The packaging containers and closure methods must be suitable for aseptic filling, and the sealed containers should effectively prevent microbial contamination during storage and transportation. Additionally, the containers should maintain the chemical stability of the product.
2. All surfaces of the container that come into contact with the product must be thoroughly sterilized before filling. The effectiveness of this process depends on the initial level of contamination.
3. During the filling process, the product must remain protected from external contaminants such as equipment parts or environmental factors.
4. Sealing must occur in a sterile area to prevent any microbial ingress.
Now, moving on to the performance requirements of a high-quality aseptic plastic bag filling machine. Based on industry standards and practices both domestically and internationally, the following criteria should be met:
1. The product must meet Class A or Class B commercial sterility requirements. This involves testing for total colony counts, coliforms, salmonella, shigella, staphylococcus aureus, hemolytic streptococcus, mold, and yeast. It also includes checking for microbial proliferation in packaged liquids.
2. The equipment should have good adaptability, including a wide range of filling capacities (typically 120–550 ml per bag) and compatibility with various types of packaging materials.
3. An advanced automatic control system is essential, allowing the machine to handle material conveying, forming, sealing, and high-speed packaging efficiently. High-performing systems can produce up to 6,000–7,000 bags per hour.
4. The machine should be equipped with an independent CIP (Cleaning-In-Place) system for cleaning and sterilizing with alkali, acid, and sterile water, as well as high-temperature steam.
5. A reliable fault detection and protection system is necessary to ensure safe operation. In case of malfunction, the system should trigger alarms and take protective actions like stopping the filling process.
6. Energy efficiency is another important factor. Machines that consume less electricity, compressed air, steam, and water are more cost-effective for long-term use.
7. The rate of broken or leaking bags should be very low—ideally below one in ten thousand. If the leak rate exceeds one in a thousand, the machine may not meet quality standards.
In conclusion, choosing the right aseptic plastic bag filling machine requires careful evaluation of its performance, reliability, and adaptability. By understanding these key factors, dairy producers can make informed decisions that improve product quality, safety, and operational efficiency.
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