Analysis of the Structural Design and Anti-Breakage Performance of Multi-Layer Laminated Glass—Foshan Laminated Glass Manufacturer
Release time：
Feb 03,2026
As a glass processing manufacturer, the shatter-resistant glass we produce relies on a multi-layer composite structure to achieve its impact resistance—rather than being made from a single type of glass.
Its basic structure consists of alternating layers of “tempered glass + high-performance PVB film.” The number of layers is adjusted according to the anti-smash rating. Typically, C-grade anti-smash models use 2–3 layers of composite material, while high-end protective models can have 4 or more layers.
During production, the float glass sheet is first subjected to high-temperature tempering to enhance its impact resistance. Next, the tempered glass is precisely aligned with the PVB film and then fed into an autoclave for high-temperature, high-pressure lamination. This process ensures that the film adheres perfectly to the glass, with no air bubbles or delamination. This step is crucial for guaranteeing the glass’s shatter-resistant performance.
Standard Class C shatter-resistant glass can withstand continuous impacts from a 10-kg hammer without being penetrated. After breaking, the fragments remain firmly bonded together by the PVB interlayer and do not scatter.
During processing, the film thickness and lamination temperature must be strictly controlled. Insufficient film thickness or uneven temperature can both reduce the anti-smash performance.
The light transmittance of shatter-resistant glass must be controlled at ≥75% to avoid obstructing the user’s field of vision. The edges must undergo precision grinding and chamfering to reduce stress concentration and lower the likelihood of breakage. Each batch of products will be sampled for impact testing to ensure compliance with the relevant shatter-resistant rating standards.
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