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公开(公告)号：US11040908B2
公开(公告)日：2021-06-22
申请号：US15752717
申请日：2015-08-21
发明人： Takashi Nonaka , Norio Hirayama , Kazuaki Minami , Yosuke Nukui
IPC分类号： C03B37/075 , C03C13/00 , C03C3/087 , C03C3/091
摘要： Provided is a method for producing glass fiber, capable of stably performing the spinning of glass fibers without mixing of red crystals in glass fibers. When glass fibers are formed by discharging, from a nozzle tip, a molten glass obtained by melting glass raw materials mixed so as to give a glass composition including, when melted, in relation to the total amount thereof, SiO2 in a range from 57.0 to 62.0% by mass, Al2O3 in a range from 15.0 to 20.0% by mass, MgO in a range from 7.5 to 12.0% by mass, and CaO in a range from 9.0 to 16.5% by mass, and having a total content of SiO2, Al2O3, MgO and CaO of 98.0% by mass or more, the glass composition includes B2O3, Li2O, or B2O3 and Li2O as an additive or additives capable of suppressing the generation of red crystals.
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公开(公告)号：US09878942B2
公开(公告)日：2018-01-30
申请号：US15318574
申请日：2015-12-18
发明人： Takashi Nonaka , Norio Hirayama , Kazuaki Minami , Yosuke Nukui
CPC分类号： C03C13/00 , C03C3/087 , C03C2213/00
摘要： Provided is a glass composition for glass fiber allowing spinning to be stably performed without mixing of red foreign substances into glass fibers. The glass composition for glass fiber includes, in relation to the total amount thereof, SiO2 in a content falling within a range from 57.0 to 60.0% by mass, Al2O3 in a content falling within a range from 17.5 to 20.0% by mass, MgO in a content falling within a range from 8.5 to 12.0% by mass, CaO in a content falling within a range from 10.0 to 13.0% by mass and B2O3 in a content falling within a range from 0.5 to 1.5% by mass, the total content of SiO2, Al2O3, MgO and CaO being 98.0% by mass or more.
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