公开(公告)号：EP1021380B1

公开(公告)日：2001-07-18

申请号：EP98954376.4

申请日：1998-10-08

申请人： Schott Glas ,  CARL-ZEISS-STIFTUNG trading as Schott Glas

发明人： FOTHERINGHAM, Ulrich ,  SPRENGER, Dirk ,  OSTENDARP, Heinrich ,  WEGENER, Holger ,  HÖLZEL, Eva ,  BÜRGEL, Wolfgang

IPC分类号： C03B32/00

CPC分类号： C03B32/00

摘要： The invention relates to an easy and affordable method for precompressing flat glass panes in which a high temperature homogeneity is guaranteed in the glass. At least one flat glass pane which is situated on at least one ceramic plate is subjected to a thermal treatment ranging from 300 DEG C to 900 DEG C in radiation furnace. Said ceramic plate comprises a caloric conductibility which is at least 5 times greater in the range of the thermal treatment temperature than that of the glass pane which is to be treated. Such ceramic plates with a certain thickness can be used such that the relationship of the entire thickness of the ceramic plates to the glass staple height amounts to at least 1/ lambda . 40 W/mK, whereby lambda represents the caloric conductibility of the ceramic material in the range of the thermal treatment temperature.