Wire mesh glass is a flat glass, which is produced by continuous casting or rolling. A braided steel wire, welded at all intersections, is inserted.
The production of wire glass takes place in the rolling process, whereas the glass melt is formed between two counter-rotating, water-cooled steel rolls into an endless flat glass ribbon. The insertion of the wire is done via a special feed directly before shaping the glass.
The wire connects the resulting fragments in the event of glass breakage. This minimizes the risk of injury. In addition, the broken wire glass has a certain residual carrying strength. Due to the different thermal expansion behavior of the glass wire, and it is prone to large temperature variation. Since the wire insert is a potential source of error, the strength is reduced compared with conventional float glass, but offers additional protection in the event of fire.
Wired glass is utilized for its fire-resistant abilities, and is well-rated to withstand both heat and hose streams. This is why wired glass exclusively is used on service elevators to prevent fire ingress to the shaft. The wire prevents the glass from falling out of the frame even if it cracks under thermal stress, and is far more heat-resistant than a laminating material.