Method for producing thermally tempered glasses
OwnerHeiko Hessenkemper, Michael Henniginventors
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Abstract
A method for producing thermally tempered glass. This type of surface treatment is applied in particular where mechanical properties, in particular strengths, are required, for example in the automotive industry, in architecture and in the utilisation of solar energy. The method produces thermally tempered glass with thicknesses less than 2.8 mm. The method can be advantageously performed such that thermally tempered glass can be produced with less energy input by utilising controlled quenching.
Claims18
1-17. (canceled)
A method for producing a thermally tempered glass, wherein the glass is heated as a pane with a thickness less than 2.8 mm in a first step and quenched in a second step, wherein measures that increase the strength of the glass are implemented before or during the first step, and the quenching in the second step is performed using media which in use have a heat transfer coefficient greater than 400 W/m2K, wherein before or during the first step of the method the glass is subjected to a laser cutting process and/or flame burnishing and/or treatment with AICl3 and
- (a) in the second step the quenching is performed by spray cooling using liquid phases and/or
- (b) in the second step the glass is subjected to controlled cooling under direct-contact cooling in a plate cooler and removed in a cold state from the plate cooler.
Dependencies are inferred from the claim text.