Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms
Reexamination Certificate
2006-12-25
2011-10-25
Nguyen, Khanh (Department: 1746)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
C065S474000, C065S475000, C065S479000, C264S211110, C501S027000, C501S025000, C501S036000, C501S069000, C501S038000, C428S141000, C428S357000
Reexamination Certificate
active
08042363
ABSTRACT:
The invention relates to producing continuous organic fibers by stretching from molten minerals. These fibers can be used for producing heat resistant threads, rovings, cut fibers, fabrics, composite materials and products based thereon. The inventive glass has the following chemical composition in mass percentage: 15.9-18.1 Al2O3, 0.75-1.2 TiO2, 7.51-9.53 Fe2O3+FeO, 6.41-8.95 CaO, 2.5-6.4 MgO, 1.6-2.72 K2O, 3.3-4.1 Na2O, 0.23-0.5 P2O5, 0.02-0.15 SO3, 0.12-0.21 MnO, 0.05-0.19 BaO, impurities up to 1.0, the rest being SiO2. The inventive method consists in loading a ground composition in a melting furnace, in melting said composition, in homogenizing a melt, in consequently stabilizing the melt in the melting furnace feeder, in drawing and oiling the fiber and in winding it on a spool. Prior to loading, the composition is held in an alkali solution for 15-20 minutes, and is then washed with flowing water for 20-30 minutes and dried. After having been washed with flowing water, the dried composition is loaded into the melting furnace.
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Friedrich M, Schulze A, Prosch G, Walter C, Weikert D, Binh NM, Zahn DRT, “Investigation of Chemically Treated Basalt and Glass Fibres”, 2000, Mikrochimica Acta, Acta 133, pp. 171-174.
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Biland Alexandr B.
Kibol Roman V.
Kibol Viktor F.
Nakanoo Sunao
Aziz Keith T
DeLio & Peterson LLC
Nguyen Khanh
Peterson Peter W.
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