Stock material or miscellaneous articles – Surface property or characteristic of web – sheet or block – Surface modified glass
Patent
1976-12-17
1978-10-10
Bashore, S. Leon
Stock material or miscellaneous articles
Surface property or characteristic of web, sheet or block
Surface modified glass
65 30E, 106 52, 428218, B32B 1700, C03C 1500, C03C 304
Patent
active
041197607
ABSTRACT:
Disclosed are improved glass compositions of the SiO.sub.2 -Na.sub.2 O-Al.sub.2 O.sub.3 -ZrO.sub.2 system for use in chemical strengthening. The improvement of the invention resides in proportioning the components so as to provide better melting glass compositions with lower liquidus temperatures and greater working ranges than normally associated with such systems. Such glasses are better suited for forming the updraw or float methods.
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Bashore S. Leon
Miga Frank W.
Millman Dennis G.
PPG Industries Inc.
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