Sharing useful information, let me take you to understand airtight doors in one minute.

　　The air-tight door is a conversion armored door that integrates sound insulation, thermal insulation, compression, dust prevention, fire prevention, and radiation protection. It is generally used in places with high requirements for sound insulation, thermal insulation, and air tightness, such as hospitals, food factories, and industrial factories.

　　What is the working principle of the air-tight door? Let's take a look together.

　　The inflatable air-tight door mainly consists of a door frame, door panel, inflatable sealing strip, and inflation/deflation control system, among others. The inflatable sealing strip is embedded in the groove of the door panel frame. The corners of the door frame and door panel are rounded with a radius greater than 150mm, and the door panel has a sandwich structure, with thermal insulation and sound insulation materials in the middle, and the side panels firmly bonded to the frame through pressing technology. The materials of the door frame and door panel are 304 or 316L stainless steel. The working method of the inflatable air-tight door is: when the door is opened, the inflatable sealing rubber strip contracts in the groove. After the door is closed, the expanding sealing rubber strip expands, forming a strict seal between the door and the door frame, and the door is securely locked.

　　What are the advantages and characteristics of the air-tight door? Let's take a look together.

　　1. The thermal insulation of the sealed door is good: the thermal conductivity of aluminum-plastic composite section plastic is low, 1250 times lower than that of aluminum, with good air density. In cold regions, it is like another world indoors, even at temperatures below zero.

　　2. The air-tight door has good sound insulation: the structural design has tight seams, and experimental results show sound insulation of over 30dB, meeting relevant standards.

　　3. The impact of the air-tight door: the aluminum alloy on the surface of the aluminum-plastic composite material is stronger than the resistance of plastic windows.

　　4. The air-tightness of the sealed door is good: multiple or tape seals are installed in each groove of the aluminum-plastic composite window, and the air-tightness is layered, fully utilizing the air conditioning effect, saving 50% of energy.

　　5. The design of doors and windows with good water tightness: waterproof structure, completely isolating rainwater from the outside, and the water tightness meets national standards.

　　6. The sealed door has good fire resistance: the material is UPVC plastic steel doors and windows, which do not ignite and do not support combustion.

　　7. The confidential door has good anti-theft features: the confidential door has good hardware accessories and decorative locks, leaving thieves at a loss.

　　8. No maintenance required: aluminum-plastic composite materials are not easily corroded by acid, do not discolor or yellow, and require almost no maintenance. Just wash off dust, water, and laundry detergent to clean.

　　What are the main indicators of the air-tight door? Let's take a look together.

　　 1. Material of the inflatable sealing strip: silicone.

        2. Hardness of the inflatable sealing strip: 60～70.

        3. Environmental temperature adaptability: -30℃～50℃.

        4. Inflation and deflation test of the inflatable sealing strip: inflation pressure 2.0㎏/㎝～3.0㎏/㎝, inflation time <5 seconds, deflation time <5 seconds, repeated over 5000 times, with no bursting or leakage.

        5. Monitoring system: can monitor the air pressure of the inflatable sealing strip, the switch status of the air-tight door, and the switch time of the air-tight door, and can display and alarm through the central control system.

        6. The door can close automatically, and the inflation and deflation can be automatically realized when the door closes and opens. It can also be manually controlled for inflation and deflation.

        7. Emergency release valves and emergency door opening buttons are installed on both sides of the door.