THERMAL TREATMENT OF GLASS

摘要

Glass is thermally treated by contacting the glass, when it is hot, with a gas-fluidised mixture of particulate materials, at least one of which has gas-generating properties when heated by the hot glass. The materials are mixed in selected proportions which impart to the mixture a thermal capacity and flowability which are such that a required thermal treatment is achieved. The method is suitable for the thermal toughening of glass sheets for vehicle windscreens.