25-01-2018 дата публикации
Номер: US20180022634A1
Принадлежит:
The present invention provides a glass composition that allows holes with a circular contour and a smooth inner wall to be formed by a collective micro-hole-forming process using a combination of modified portion formation by ultraviolet laser irradiation and etching, the glass composition being adapted for practical continuous production. The present invention relates to a glass for laser processing, the glass having a glass composition including, in mol %: 45.0%≦SiO≦70.0%; 2.0%≦BO≦20.0%; 3.0%≦AlO≦20.0%; 0.1%≦CuO≦2.0%; 0%≦TiO≦15.0%; and 0%≦ZnO≦9.0%, wherein a relationship of 0≦LiO+NaO+KO<2.0% is satisfied. 1. A glass for laser processing , the glass having a glass composition comprising , in mol %:{'sub': '2', '45.0%≦SiO≦70.0%;'}{'sub': 2', '3, '2.0%≦BO≦20.0%;'}{'sub': 2', '3, '3.0%≦AlO≦20.0%;'}0.1%≦CuO≦2.0%;{'sub': '2', '0%≦TiO≦15.0%; and'}0%≦ZnO≦9.0%,{'sub': 2', '2', '2, 'wherein a relationship of 0≦LiO+NaO+KO<2.0% is satisfied.'}2. The glass for laser processing according to claim 1 , wherein a relationship of 55.0%≦SiO+BO≦80.0% is satisfied.3. The glass for laser processing according to claim 1 , wherein a relationship of 6.0%≦MgO+CaO+SrO+BaO≦25.0% is satisfied.4. The glass for laser processing according to claim 1 , wherein a relationship of 5.0≦AlO/CuO≦60.0 is satisfied.5. The glass for laser processing according to claim 1 , further comprising claim 1 , as a coloring component claim 1 , an oxide of at least one metal selected from the group consisting of Fe claim 1 , Ce claim 1 , Bi claim 1 , W claim 1 , Mo claim 1 , Co claim 1 , Mn claim 1 , Cr claim 1 , and V.6. The glass for laser processing according to claim 1 , whereinthe glass composition comprises, in mol %:{'sub': '2', '45.0%≦SiO≦68.0%;'}{'sub': 2', '3, '2.0%≦BO≦20.0%;'}{'sub': 2', '3, '3.0%≦AlO≦20.0%; and'}0.1%≦CuO≦2.0%,{'sub': '2', 'the glass composition is substantially free of TiOand ZnO, and'}the following relationships are satisfied:{'sub': 2', '2', '3, '58.0%≦SiO+BO≦80.0%;'}8.0%≦MgO+CaO+SrO+ ...
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