Method for producing a ceramizable green glass component, and ceramizable green glass component, and glass ceramic article
AssigneeSchott AG
InventorsBernhard Hunzinger, Doris Moseler, Frank Büllesfeld, Ulrich Lange
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Abstract
A method for producing ceramizable green glass components provided, as well as apparatus for performing such method and ceramizable green glass components producible by such method. The method is a redrawing process in which a preform is heated, in a deformation zone, to a temperature that enables redrawing of the glass. The deformation zone is particularly small, which permits redrawing of the ceramizable green glass bodies while avoiding ceramization during the redrawing. The method provides plate-like or sheet-like green glass components that have a particularly smooth surface.
Claims22
A method for producing a glass ceramic article, comprising the steps of:
- preparing a glass melt of ceramizable glass;
- producing, from the glass melt, a ceramizable green glass body as a preform;
- providing the preform to a redrawing apparatus;
- heating at least a portion of the preform;
- redrawing the preform into a ceramizable green glass component, wherein the ceramizable green glass component has a crystalline content of less than 20 vol%.
Dependencies are inferred from the claim text.