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Fully tempered glassThis glass type can be manufactured from float glass or practically every known flat structured ornamental and cast glass.
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Heat-soaked tempered glassEach basic glass contains extremely low quantities of nickel sulphide (NiS) crystals, which are inevitably introduced into the glass via the raw materials. In normal annealed float or patterned glass, these crystals do not have any relevance.
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Implementation recommendationDetailed specifications for glass construction and the dimensioning of glass are based on the respective rules and are not stated here in detail.
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Interior/exterior safetyClear regulation parameters govern the installation of glass elements in areas where there is a risk of falling.
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Laminated safety glassSince its invention in 1909, and after more than a century of continuous improvement, laminated safety glass is a key component in the realisation of modern architecture.
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Our product: LamiGlassGuardian LamiGlass®comprises two or more panes of glass bonded together using clear PVB interlayers.
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Partially tempered glassProduction is the same as for fully tempered glass, but the cooling process is slower, which means that the stress differences in the glass are lower.
Heat-soaked tempered glass
Each basic glass contains extremely low quantities of nickel sulphide (NiS) crystals, which are inevitably introduced into the glass via the raw materials. In normal annealed float or patterned glass, these crystals do not have any relevance.
The extremely rapid cooling-off period during the tempering process “freezes” the NiS particles in a high temperature crystal modification. When heat is later applied, for example, through solar energy absorption, this crystal structure may change because the volume of the crystals change, i.e. increases, and this may cause the glass to suddenly burst apart as soon as the particles exceed a critical size.
Any safety-relevant glazing and panes, such as façade glass, which are exposed to high temperature fluctuations, should therefore be subjected to an additional heat soak test.
This test is carried out in accordance with EN 14179 and should be documented. This test forces the NiS crystals that may be present to react quickly. Those panes of glass that do have these invisible crystals are intentionally destroyed during this test.
For this purpose, the tempered glass panes are heated to a defined 260 °C ± 10 % for at least 2 hours.
This process is typically monitored by internal and external controllers and should be permanently documented for each pane supplied (mandatory in Germany). Moreover, these panes should be visibly marked with the tempered-heat soaked glass label.
