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 Edito de la Revue VERRE - Octobre 2005. Vol 11, n°5

Edito [Version française ]

The quality of glass depends on mastering the conditions of its molten state. From the beginning of time, it has been recognised that starting from an appropriate composition, free of refractory elements and brought to sufficiently high temperatures is not enough to produce a homogenous product that meets all the specifications sought. The Mesopotamians were already aware of that, and as early as the XIIIth century B.C. endeavoured to record in writing the procedures to follow -prayers and libations included!- to insure the success of their operations.

Pascal Richet
Physicien
Institut de Physique du Globe de Paris




Glass manufacture has been submitted to environmental constraints for a long time now, as illustrated in the XVIIth century by the government of England’s decision to replace the use of charcoal by coal to preserve the dangerously diminishing forest resources of the time. The change provoked considerable modifications to furnaces and fusion processes.

So, is there nothing new under the Sun? Yes, of course there is, because in our modern world demands are forever increasing and techniques, as well as manufacturing processes must constantly evolve if glass is to remain an innovative and competitive material in all its areas of applications.

The majority of the facets of fusion are concerned, whether it be refractories, burners or melting control. Energy savings are also another major preoccupation, as much as the reduction in emissions of carbon dioxide and other pollutant or greenhouse effect gases. As these various aspects are of course closely linked, extended manufacturing process computer modelling, made possible by ever more powerful capacities of calculation, is another path for progress that has not been overlooked in this issue of Verre.
 
 
 
 
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