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公开(公告)号：EP1021380A1
公开(公告)日：2000-07-26
申请号：EP98954376.4
申请日：1998-10-08
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 °C to 900 °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/μ . 40 W/mK, whereby μ represents the caloric conductibility of the ceramic material in the range of the thermal treatment temperature.
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公开(公告)号：EP1347944A2
公开(公告)日：2003-10-01
申请号：EP01985876.0
申请日：2001-12-13
发明人： MÜLLER, Rudolf , LOCH, Horst , SPRENGER, Dirk , ZIMMER, Jose
IPC分类号： C03B17/06
CPC分类号： C03B17/067 , C03B17/06 , C03B17/064 , Y02P40/57
摘要： The invention relates to a method for producing thin glass panes, especially glass panes with a thickness of below 1 mm, by drawing a thin glass strand vertically downwards. According to the inventive method, a glass melt is fed from a melting bath via a feed to the glass drawing tank that comprises a nozzle system with at least one slotted nozzle. The length and the diameter of the feed as well as the viscosity of the glass melt present in the feed determine the overall throughput. The throughput per length unit in the transverse direction to the glass strand (so-called line throughput) is adjusted via the geometry of the nozzle system and via the viscosity of the glass melt present in the nozzle system. These parameters are adjusted in such a manner that the glass, when leaving the nozzle system, does not wet the bottom of the slotted nozzle in the range of the tearoff edge. The invention further relates to a device for producing thin glass panes which is characterized in that the feed (1), the glass drawing tank (6) and the nozzle system form a closed system. The feed (1) is provided with a tube (2) with segmented tube sections (2a, b, c) that has a length of from 2 m to 5 m and a diameter of from 50 mm to 80 mm, the tube cross-section being circular. The glass drawing tank is provided with a heating system (9) that is vertically and transversely segmented.
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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
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.
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