Patent ID: 9643881
Date: 2017-05-09
CPC Classifications: C03B,C03C

Claim:
1. A glass composition for a glass fiber comprising, in mass % on an oxide base, 50 to 65% of SiO 2 , 0 to 5% of Al 2 O 3 , 0 to 10% of CaO, 12 to 20% of Li 2 O+Na 2 O+K 2 O, 0 to 5% of Li 2 O, 12 to 18% of Na 2 O, 0 to 1.7% of K 2 O, 5 to 8.3% of TiO 2 , 16.5 to 20% of ZrO 2 , and wherein a total content of SiO 2 , Al 2 O 3 , CaO, Li 2 O, Na 2 O, K 2 O, TiO 2 , and ZrO 2 is 98% or more, and wherein a difference between a drawing temperature and a liquidus temperature is 91° C. or more.