| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a glass plate which has a protection film hardly disappearing in a cleaning process, and which is hardly scratched for a long period. <P>SOLUTION: This glass plate, which is a glass plate having a protection film at least on one surface, contains as a glass composition, in terms of mass%, 40-70% SiO<SB POS="POST">2</SB>, 0-20% Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 0-15% B<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 0-30% Na<SB POS="POST">2</SB>O+K<SB POS="POST">2</SB>O, and 1-40% SrO+BaO; and further the protection film contains an Sr-containing sulfate and/or a Ba-containing sulfate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
