Verbundglas

Verbundglas, commonly known as laminated glass, is a pane composed of two or more glass sheets bonded by one or more interlayers, most commonly polyvinyl butyral (PVB) or ethylene-vinyl acetate (EVA). The interlayer keeps the glass connected at the break lines, reducing the risk of injury from shards and restricting the passage of large openings after breakage.

Manufacturing involves assembling the glass plies with interlayers, removing air, and laminating under heat and pressure, often in an autoclave. The result is a single, rigid pane that can be formatted in various thicknesses and configurations (two-, three-, or more-ply).

Properties include enhanced safety by preventing sharp fragments from detaching, improved security against forced entry on higher thickness and multi-ply laminates, and better acoustic insulation and UV protection when using appropriate interlayers and coatings. The interlayer can be clear or tinted and may include solar control or UV-filtering functions.

Typical applications are car windshields and backlights, building façades, interior partitions, skylights, and sound-insulating or vandal-resistant glazing. For higher security, bullet- or blast-resistant laminates add multiple plies and thicker interlayers.

Quality and performance are governed by national and international standards and testing procedures that assess impact resistance, post-breakage performance, acoustic insulation, and weather resistance.