Latest company case about Guangzhou Cleanroom Construction Co., Ltd. Certifications

In the production process of ready-to-eat food factories, pass-through windows serve as important channels for the transfer of items between different clean areas. They play a crucial role in maintaining the cleanliness of the production environment, ensuring food safety, and improving production efficiency. Ready-to-eat food factories have a variety of strict requirements for pass-through windows, covering multiple dimensions such as design, material, function, cleaning, and maintenance.

I. Design and Structural Requirements

• Reasonable Size Planning: A wide variety of items are transferred in ready-to-eat food factories, including raw materials, semi-finished products, and finished products, all of which come in different sizes. Therefore, the internal size of the pass-through window needs to be designed according to the size of common items to be transferred to ensure that the items can pass in and out smoothly. At the same time, the external size of the pass-through window should match the building structure of the installation location to avoid situations such as insecure installation or affecting the passage of the surrounding working areas.
• Good Sealing Performance: Pass-through windows must have excellent sealing performance to prevent air convection and cross-contamination of dust and microorganisms between different clean areas. When in the closed state, the door of the pass-through window should fit closely with the door frame. High-quality sealing materials such as sealing rubber strips should be used to ensure no leakage. In addition, the observation window of the pass-through window should also be well-sealed to prevent external pollutants from entering.
• Interlocking Function: To ensure that the doors on both sides of the pass-through window cannot be opened simultaneously, avoiding a direct connection between the clean area and the non-clean area, the pass-through window should be equipped with a reliable interlocking device. When one side of the door is opened, the other side of the door is automatically locked, and the other door can only be opened after the opened door is closed. This interlocking function effectively prevents the disorderly flow of air and the intrusion of pollutants.

II. Material Requirements

• Corrosion Resistance and Easy Cleaning: The production environment of ready-to-eat food factories is usually relatively humid, and it may come into contact with various acidic and alkaline substances and food raw materials. Therefore, the inner and outer walls of the pass-through window should be made of corrosion-resistant and easy-to-clean stainless steel materials, such as 304 or 316 stainless steel. This material can not only resist corrosion and extend the service life of the pass-through window but also facilitate daily cleaning and disinfection, reducing the growth of bacteria and dirt.
• Non-toxic and Harmless: Since the pass-through window is in direct contact with the items in the production process of ready-to-eat food, its material must be non-toxic and harmless and will not contaminate the food. When selecting materials, it should be ensured that they meet food-grade safety standards, and materials that may release harmful substances should be avoided.

III. Functional Requirements

• Purification Function: For the clean production areas of ready-to-eat food factories, pass-through windows should have an air purification function. High-efficiency particulate air (HEPA) filters can usually be equipped to filter the air entering the pass-through window during the item transfer process, removing dust particles and microorganisms in the air and ensuring that the items transferred to the clean area are in a clean environment.
• Sterilization Function: To further ensure food safety, pass-through windows can be equipped with sterilization devices such as ultraviolet germicidal lamps. Before and after the item transfer, turn on the germicidal lamp to disinfect the interior of the pass-through window, killing the bacteria and viruses attached to the surface of the items and inside the pass-through window, and reducing the risk of food contamination.
• Control and Display Function: Modern pass-through windows should be equipped with an intelligent control and display system, which is convenient for operators to monitor and operate the running status of the pass-through window. For example, it can display information such as the opening and closing status of the door, the service time of the filter, and the working status of the germicidal lamp, and relevant operations can be carried out through the control panel, such as turning on or off the germicidal lamp and adjusting the wind speed of the purification fan.

IV. Cleaning and Maintenance Requirements

• Easy Disassembly and Cleaning: The structural design of the pass-through window should be convenient for the disassembly and cleaning of internal components, such as filters and germicidal lamps. Regular cleaning and replacement of these components are the keys to ensuring the normal operation and purification effect of the pass-through window. In addition, the inner wall and bottom of the pass-through window should be smooth and flat without dead corners, making it convenient for cleaning personnel to conduct a comprehensive cleaning.
• Regular Maintenance and Inspection: Ready-to-eat food factories should establish a complete maintenance and inspection system for pass-through windows, and regularly inspect and maintain the sealing performance, interlocking function, purification, and sterilization functions of pass-through windows. Timely identify and solve potential problems to ensure that the pass-through window is always in good operating condition.

In conclusion, the requirements of ready-to-eat food factories for pass-through windows are multi-faceted and strict. Only by meeting these requirements can pass-through windows play their due role in the production process of ready-to-eat food, ensuring food safety and improving production efficiency. As the operators of ready-to-eat food factories, they must attach great importance to the selection, installation, and maintenance of pass-through windows to create a safe and clean environment for the production of ready-to-eat food.