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1. (WO2017033246) GLASS COMPOSITION FOR GLASS FIBERS

Pub. No.:    WO/2017/033246    International Application No.:    PCT/JP2015/073632
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 22 01:59:59 CEST 2015
IPC: C03C 13/00
Applicants: NITTO BOSEKI CO., LTD.
日東紡績株式会社
Inventors: NONAKA, Takashi
野中 貴史
HIRAYAMA, Norio
平山 紀夫
MINAMI, Kazuaki
南 和明
NUKUI, Yosuke
貫井 洋佑
Title: GLASS COMPOSITION FOR GLASS FIBERS
Abstract:
Provided is a glass composition for glass fibers that makes it possible to stably spin fibers without red foreign matter being mixed into the glass fibers. The glass composition for glass fibers contains 57.0-60.0 mass% of SiO2, 17.5-20.0 mass% of Al2O3, 8.5-12.0 mass% of MgO, 10.0-13.0 mass% of CaO, and 0.5-1.5 mass% of B2O3 relative to the total glass composition. The total amount of SiO2, Al2O3, MgO, and CaO is 98.0 mass% or more.