Anti-hurricane Laminated Glass

Anti-hurricane laminated glass is a high-performance safety glass specially designed to withstand extreme wind pressure and high-speed flying debris (such as broken branches, tiles, metal pieces and even small stones) brought by strong storms like hurricanes and typhoons

Core structure and principleMulti-story sandwich structure

It is composed of two or more layers of glass panels.

The glass panels are firmly bonded together by one or more layers of tough polymer interlayers (the most common being polyvinyl acetal).

The thickness of the glass, the number of layers, and the thickness of the intermediate layer (usually multiple layers or thicker) will increase according to the required impact resistance and wind pressure resistance grades.

Key performance:

Impact resistance: This is its most core function. When hit by high-speed splashes (such as the 2x4 wooden beam "missile" used in the test), the outer layer of glass may break, but the tough PVB middle layer will firmly bond the glass fragments, forming a "spider web" -like crack area, effectively preventing the fragments from flying and injuring people and blocking the penetration of objects. Even if the glass breaks, the middle layer can maintain the integrity of the overall structure and form a barrier.

Wind pressure resistance: The anti-hurricane laminated glass structure itself has a relatively high overall strength. Combined with the original glass sheets of sufficient thickness, it can withstand the huge and repeated positive and negative wind loads brought by hurricanes, preventing the entire glass from being blown into or out of the frame, which would cause a sharp increase in internal pressure of the building (this is one of the main reasons why the roof and walls of buildings are blown off).

Structural: Even if the glass breaks, the middle layer can still maintain a certain level of strength and integrity, continuing to provide a certain wind pressure resistance capacity (residual strength), thus buying precious time for personnel evacuation.

Additional performance: It usually also has excellent sound insulation performance and UV protection performance (the PVB layer can filter out most UV radiation).

Application scenarios

Doors and Windows of residential and commercial buildings in areas frequently hit by hurricanes.

The curtain walls of high-rise buildings.

Skylights, canopies and other parts that require high safety.

Buildings along the coast that are vulnerable to storm surges.

Facilities that require extremely high security levels (such as hospitals, emergency command centers, banks, etc.).

Certification and Standards

Hurricane-resistant glass must pass strict testing standards to obtain certification, especially in areas with a high incidence of hurricanes, such as Florida in the United States. The key criteria include:

ASTM E1886 and ASTM E1996: Standards of the American Society for Testing and Materials, which respectively stipulate the methods for wind pressure resistance test and large splash impact resistance test.

Miami-Dade County TAS 201, 202, 203: The strict local standards of Miami-Dade County, Florida, are widely regarded as the industry benchmark for glass performance in hurricane zones. Products that have passed this certification can usually be used in hurricane zones throughout the United States.

Manufacturers are required to provide certification reports on the design wind pressure rating and impact resistance rating of the products under specific dimensions and installation methods.

The importance of installation

Even for the best hurricane-resistant glass, the installation quality is of vital importance. It is necessary to use specially designed window frame systems and anchor fasteners that have also passed hurricane resistance certification, and install them strictly in accordance with the specifications. Incorrect installation can cause the entire system to fail.

Anti-hurricane laminated glass usually consists of:

Package

1. Worthy export wooden crate.
2. Paper interlayer between every two pieces of glass or powder sprayed onto its surface to ensure safety.
3. Iron/Plastic belt for consolidation.