Resistance to Pressure and impact

Prepared for the worst scenario

BCE offers two types of toughening either thermally or chemically, which is called ultra resistant glass. Chemically toughened glass assures the best optics, since it does not suffer from optical distortion which thermally toughened glass can.

Chemically Toughened Glass

BCE combines the advantages and safety of lamination technology with the strength of chemically toughened glass (IonGard®) which gives the glass five to eight times the impact strength of ordinary glass and allows the glass units installed without storm shutters. The glasses can consist of 2 or more sheets of chemically toughened glass and also can be double insulated. Based on the windows dimensions, its position on the boat and the potential pressure against the window, defined by the shipyard, we are able to calculate the best glass composition and thickness necessary to comply with all requirements and marine standards.


BCE's advanced IonGuard® Chemical toughening plant is one of the largest in the world with the maximum processing dimensions of 3600 W x 2400 H x 1000 D mm

By bringing together excellent optical qualities, resistance to impacts and weight savings, BCE Iongard® offers all the advantages required to satisfy the most stringent technical requirements for marine windows: pressure resistance, impact resistance, acoustic, thermal and solar protection, and complex curved shapes.

  • • Improved impact resistance
  • • Improved flexibility strength
  • • Improved scratching resistance
  • • Improved resistance to temperature changes
  • • Improved performance/weight ratio

The process of chemical toughening consists of submersing the glass for a given period of time in a special chemical bath at 460 . During the submersion cycle, the chemical ions are exchanged with the sodium ions. The larger ions "wedge" their way into the voids in the surface of the glass created when the smaller sodium ions migrate to the special solution. This ion exchange locks the surface of the glass in a state of compression and the core in compensating tension. The resulting glass is toughened.

  • • Chemically toughened glass is five to eight times stronger than comparable annealed glass;

  • • Chemically toughened glass retains its colour and light transmission properties after treatment;

  • • Due to its manufacturing process, chemically toughened glass has no bow or warp, optical distortion or strain pattern;

  • • Chemically toughened glass breaks into large fragments like annealed glass.