Airtight Double-Leaf Unequal Steel Cleanroom Door | Flush Mount | GMP Standard

"Mother-Daughter" Double-Leaf Steel Cleanroom Door | Flexible Door Control and High-Efficiency Sealing System
This door assembly consists of a narrower "daughter" leaf and a wider "mother" leaf. For routine passage, only the mother leaf is opened, while the daughter leaf remains closed to maintain the space's containment integrity; however, both leaves can be opened simultaneously—allowing for full-width access—during equipment transport or periods of high foot traffic, thereby balancing daily operational convenience with efficient evacuation during peak times.

Flexible and Efficient Access Design

Tiered Access Mode: The primary leaf is used for daily traffic to minimize indoor-outdoor air exchange, thereby conserving energy and maintaining a stable, clean environment; the secondary leaf remains closed, serving as a backup and reinforced barrier.

Full-Width Emergency Access: Both leaves can be opened simultaneously to provide unobstructed, full-width passage for moving large equipment, handling high-volume foot traffic, or facilitating emergency evacuations, accommodating diverse operational scenarios.

Rigorous Cleanroom Airtightness

Dynamic Perimeter Sealing System: Elastic EPDM seals are used on three sides, complemented by an automatic drop-down bottom seal that compresses against the floor when the door closes; this effectively prevents the infiltration of dust, microorganisms, and airflow, meeting the airtightness standards required for high-grade cleanrooms.

Contamination-Resistant Structural Design: The door leaf and frame feature a full-overlap design with no exposed gaps, preventing dust accumulation and bacterial growth.

Robust and Durable Construction

High-Quality Base Materials: Both the door frame and panels are constructed from premium galvanized steel with an eco-friendly powder-coated finish, offering excellent resistance to corrosion and chemical cleaning agents.

High-Strength, Lightweight Core: Filled with paper or aluminum honeycomb, the core ensures panel rigidity and flatness while reducing weight; this minimizes the load on hardware components and extends the door's service life.

Tailored for Cleanroom Environments

Material Compliance: Core materials meet cleanroom requirements for non-particle generation and mold resistance; the overall structural design facilitates easy cleaning and disinfection.

Multifunctional Expandability: Options include observation windows (double-glazed), door closers, access control systems, and automatic sensors; the door can also be upgraded to a manual radiation-shielding version (with lead sheet lining) to meet specific needs across sectors such as healthcare, and electronics.

Ease of Installation and Maintenance

Factory Prefabrication: Precision dimensions ensure rapid on-site installation with minimal impact on the overall fit-out schedule.

Durability and Low Maintenance: Scratch-resistant surface coatings, durable hardware, and moisture/corrosion-resistant honeycomb cores significantly reduce the frequency and cost of long-term maintenance.

Applications:

Main corridors of operating rooms, ICUs, sterile wards, and clean corridors of central supply rooms

Material entry/exit passages for GMP workshops, clean corridors, and main entrances to laboratories

Clean packaging workshops, high-cleanliness production areas, and raw material entrances

Equipment entry/exit passages for cleanrooms, and airlock vestibules (before and after air showers)

Laboratories requiring access for large equipment, and passageways with radiation shielding or high sound insulation requirements