METHOD OF MAKING GLASS ARTICLES

摘要

A method of making a shaped glass article includes placing a glass sheet on top of a mold. A heat exchanger is arranged relative to the mold such that a heat exchange surface of the heat exchanger is in opposing relation to a back surface of the mold and separated from the back surface of the mold by a gap containing a layer of gas. The height of the gap is selected such that the dominant heat transfer between the heat exchange surface and the back surface of the mold is by conduction through the layer of gas. The glass sheet is heated and formed into a shaped glass article with the mold. The heat exchanger is operated to remove heat from at least part of the mold during at least one of heating the glass sheet, forming the shaped glass article, and cooling the shaped glass article.

主权项

1. A method of making glass articles, comprising:
placing a glass sheet on top of a mold; arranging a heat exchanger relative to the mold such that a heat exchange surface of the heat exchanger is in opposing relation to a back surface of the mold and separated from the back surface of the mold by a gap containing a layer of gas, the gap having a height greater than zero and defining a thickness of the layer of gas; selecting the height of the gap such that the dominant heat transfer mechanism between the heat exchange surface and the back surface of the mold is by conduction through the layer of gas; heating the glass sheet to a forming temperature; forming a shaped glass article from the glass sheet with the mold; cooling the shaped glass article to a temperature below the forming temperature; and operating the heat exchanger to selectively remove heat from at least part of the mold during at least one of the heating, forming, and cooling.