Title:
GLASS FIBER
Document Type and Number:
WIPO Patent Application WO/2012/104999
Kind Code:
A1
Abstract:
The present invention provides a glass fiber fabric suitable as a reinforcement material for a printed wiring board, and the glass fiber thereof. This glass fiber comprises, based on the total weight of the constituents, 56.0-62.5 weight% of SiO2, 15.5-24.5 weight% of Al2O3, 0.1-4.0 weight% of CaO, 6.0-14.0 weight% of MgO, 3.0-9.0 weight% of ZnO, and 0.5-4.5 weight% of B2O3, the total content of SiO2, Al2O3, CaO, MgO, ZnO, and B2O3 being 99.0 weight% or more, the total content of ZnO and B2O3 being 4.5-13.0 weight%, and the weight ratio of MgO with respect to CaO (MgO/Cao) being 3.0 or more. This glass fiber has both a high modulus and a low coefficient of linear expansion.
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Inventors:
NONAKA TAKASHI (JP)
INABA TAKAMICHI (JP)
INABA TAKAMICHI (JP)
Application Number:
PCT/JP2011/052054
Publication Date:
August 09, 2012
Filing Date:
February 01, 2011
Export Citation:
Assignee:
NITTO BOSEKI CO LTD (JP)
NONAKA TAKASHI (JP)
INABA TAKAMICHI (JP)
NONAKA TAKASHI (JP)
INABA TAKAMICHI (JP)
International Classes:
C03C13/00; D01F9/08
Foreign References:
| JP2009514773A | 2009-04-09 | |||
| JPH06211543A | 1994-08-02 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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Claims: