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Title:
GLASS COMPOSITION, GLASS FIBER, GLASS CLOTH, AND METHOD FOR MANUFACTURING GLASS FIBER
Document Type and Number:
WIPO Patent Application WO/2017/187471
Kind Code:
A1
Abstract:
This glass composition includes, in weight%, 50≤SiO2≤54, 25≤B2O3≤30, 12≤Al2O3≤15, 0.5≤MgO≤1.9, 3.0≤CaO≤5.5, 0≤ZnO≤3.5, 0.1≤Li2O≤0.5, and 0.1≤Na2O≤0.3, and has a dielectric constant of less than 5.0 at a frequency of 1 MHz. This glass composition has a low dielectric constant and is capable of further suppressing occurrence of devitrification and inclusion of air bubbles in a glass fiber or a glass molded body formed from the composition even if the glass fiber formed from the composition has a small fiber diameter or if the glass molded body formed from the composition is thin.

Inventors:
INAKA, Yoshiyuki (Limited 5-27, Mita 3-chome, Minato-k, Tokyo 21, 〒1086321, JP)
MIYAZAKI, Takaharu (UNITIKA GLASS FIBER CO. LTD., 45-2, Uji-kozakura, Uji-sh, Kyoto 21, 〒6110021, JP)
NAWA, Yoshito (UNITIKA GLASS FIBER CO. LTD., 45-2, Uji-kozakura, Uji-sh, Kyoto 21, 〒6110021, JP)
NISHINAKA, Daisuke (UNITIKA GLASS FIBER CO. LTD., 2210, Tarui-cho, Fuwa-gu, Gifu 21, 〒5032121, JP)
SEKIDA, Tomoki (UNITIKA GLASS FIBER CO. LTD., 2210, Tarui-cho, Fuwa-gu, Gifu 21, 〒5032121, JP)
Application Number:
JP2016/004785
Publication Date:
November 02, 2017
Filing Date:
November 01, 2016
Export Citation:
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Assignee:
NIPPON SHEET GLASS COMPANY, LIMITED (5-27, Mita 3-chome Minato-k, Tokyo 21, 〒1086321, JP)
UNITIKA LTD. (50 Higashihonmachi 1-chome, Amagasaki-shi Hyogo, 24, 〒6600824, JP)
UNITIKA GLASS FIBER CO., LTD. (45-2, Uji-kozakura Uji-sh, Kyoto 21, 〒6110021, JP)
International Classes:
C03C13/00; C03C3/091; C03C3/093; D01F9/08; D03D15/12
Foreign References:
JPS62226839A1987-10-05
JPH092839A1997-01-07
JPH08333137A1996-12-17
JP2009286686A2009-12-10
JPH10310967A1998-11-24
CN101269915A2008-09-24
Attorney, Agent or Firm:
KAMADA, Koichi (8th Fl, UMEDA PLAZA BLDG. ANNEX 4-3-25, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)
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