The difference between broken bridge aluminum alloy and ordinary aluminum alloy doors and windows
Release date:
2025-09-01
Aluminum-clad windows and doors with a thermal break are a type of aluminum alloy window, but aluminum alloy windows and doors can’t be called “thermal-break aluminum” windows. After all, both are made from the same aluminum alloy material—so why is there such a big difference? What exactly sets thermal-break aluminum apart from standard aluminum alloy windows and doors?
The principle behind broken-bridge aluminum alloy involves using plastic profiles—materials with thermal insulation properties 1,250 times higher than aluminum—to both separate and firmly connect the inner and outer layers of aluminum alloy, creating a unified, highly insulated aluminum profile. When used for doors and windows, this innovative material delivers thermal performance comparable to that of high-quality plastic (or steel) windows—meeting national standard levels. This breakthrough effectively addresses the critical issue of aluminum alloys’ rapid heat conduction, which previously made them unsuitable for energy-efficient applications. Additionally, by incorporating new structural design features, it finally resolves the longstanding challenge of poor sealing in aluminum alloy sliding windows.
The broken-bridge aluminum alloy features aluminum on both sides, with a thermal-break cavity in the middle filled with PA66 nylon. This innovative structural design combines the advantages of both plastic and aluminum alloys, seamlessly meeting diverse requirements such as aesthetic appeal, as well as the strength, durability, and aging resistance needed for doors and windows.
Super broken-bridge aluminum-plastic profiles enable a seven-seal system in doors and windows, effectively separating moisture chambers to achieve balanced air and water pressure—resulting in significantly enhanced water and air tightness. As a result, these windows offer superior airtightness compared to traditional aluminum or plastic windows, ensuring dust-free indoor window sills and floors even in areas prone to heavy wind and sand. Additionally, they provide exceptional noise reduction, allowing residents within 50 meters of highways to enjoy quiet, undisturbed living spaces—performance that rivals that of top-tier casement windows.
This type of window combines the advantages of both aluminum and plastic windows while eliminating their respective drawbacks. Its performance and benefits include:
1. Excellent thermal insulation: The plastic in the aluminum-plastic composite profile has a low thermal conductivity, offering 1,250 times better insulation performance than aluminum alone.
2. Excellent sound insulation: Its structure has been carefully engineered with tight, seamless joints. Test results show a soundproofing level of 30 dB, meeting the requirements of relevant standards.
3. Impact Resistance: Thanks to the aluminum alloy outer surface of the aluminum-plastic composite profile, it offers superior impact resistance compared to plastic-steel window profiles.
4. Excellent airtightness: Aluminum-plastic composite windows are fitted with multiple sealing strips or rubber seals at all gaps, achieving Class 1 airtightness.
5. Excellent water tightness: The door and window design features a rainproof structure that completely keeps rainwater from entering the exterior.
6. Excellent fire resistance: Aluminum alloy is a metallic material and does not burn.
7. Maintenance-free: Aluminum-plastic composite profiles are resistant to acid and alkali corrosion, won’t yellow or fade, and require virtually no upkeep.
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