Glass fiber composition
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United States of America Patent
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Feb 8, 2005
Grant Date -
N/A
app pub date -
Mar 29, 2002
filing date -
Sep 30, 1999
priority date (Note) -
Expired
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Abstract
The invention relates to a biologically-degradable glass fiber composition having good mechanical properties, good workability and in particular fiber-forming-capabilty features and resistance to humidity. The concentrations expressed in percent by weight for each component being the object of the invention are: SiO.sub.2 : 61 to 66; Al.sub.2 O.sub.3 : 1.1 to 2.1; (CaO+MgO): higher than 9; (Na.sub.2 O+K.sub.2 O): higher than 18; B.sub.2 O.sub.3 : 4 to 15; P.sub.2 O.sub.5 : 0 to 5; SO.sub.3 : 0 to 1; Fe.sub.2 O.sub.3 : 0 to 0.5; Others: less than 2.
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