The thermal conductivity of glass is a valuable parameter for modelling the furnace and its heat loss, for assessing the behaviour of the glass within the moulding channels, and for evaluating the interaction between the glass and the mould during the moulding process.
At SSV, the thermal conductivity of glass is measured using various techniques:
– from room temperature up to 180°C using the hot-disk method;
– from 200°C to 1600°C using the laser-flash technique.

In addition to experimental measurements, mathematical modelling is possible based on chemical analysis by XRF and optical analysis at low temperatures. These models are valid only for soda-lime-silicate glasses.