Glass lamination means assembling two or more layers of glass permanently bonded under heat with an EVA (ethylene vinyl acetate) interlayer. Laminated glass or multilayer glass can be used in a wide range of applications due to its high safety characteristics, also complying with present architectural requirements. Interlayers may be clear, opaque or coloured. There are various benefits of laminated interlayer glass: excellent transperency and long-term ageing resistance of the final product.
Safety and Strength
Due to its high safety characteristics, laminated glass is particularly used to manufacture glass floors, glass balustrades, glass staircases and glass canopies: should glass breakage occur, the glass splinters remain firmly bonded to the interlayer, thus avoiding any risk of injury.
Another important aspect of our daily lives is protection against vandalism and burglary in public and residential areas. Under great impact, windows, glazings or walls made with laminated glass do not shatter and they can be a safe solution provided a suitable laminated glass is chosen. The thickness and structure of laminated security glass depends on the safety standards specified in the building codes.
Glass lamination is used to manufacture bulletproof security glass and explosion-proof glass.
Structure of Laminated Glass
The number and thickness of glass sheets, together with the number of EVA interlayers, are chosen according to the size of the laminated glass panel, its use and its required impact resistance. The higher the number of interlayers, the higher its security level. Moreover, glass panels may be toughened prior to being laminated, especially where mechanincal fittings (drilled holes, cut-outs), are required thus increasing their strength.
Besides its high strength and security, interlayer laminated glass is suitable for multiple architecturale and design applications. Glass sheets of various thicknesses or coloured glass panes can be laminated; different fabrics, special prints and coloured interlayers can be integrated between the glass sheets to create decorative effects. Coloured painted glass (according to RAL standard) can also be laminated to provide double sided opaque colour for doors, glass walls or shower enclosures.
Transparent Design recommends using laminated glass with a matte interlayer instead of mechanically sandblasted glass, as this is easier to maintain and to clean and is stain resistant.