专利名称：Method of shaping glass sheets by the roll
forming method
发明人：Robert G. Frank申请号：US05/752379申请日：19761220公开号：US04074995A公开日：19780221
摘要：The present invention relates to a method of reducing the severity of edgekinking that sometimes occurs when heated glass sheets are shaped by roll forming. Theimprovement comprises superficially cooling one or both side edge portions of eachglass sheet between a furnace exit and a roll forming station where its undersurface islifted by a set of lower rotating forming rolls having a concave configuration in their axialdirection which is transverse to the direction of glass sheet movement.
申请人：PPG INDUSTRIES, INC.
代理人：Dennis G. Millman,Edward I. Mates
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