Method of making long, fine diameter glass fibers and products made with such glass fibers
US6227009A · kind A · utility
Inventors
Key dates
| Filing date | Dec 14, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2213/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Relatively viscous glass is fiberized in a rotary fiberization process at relatively high disk speeds and through relatively large diameter holes to form long, fine diameter glass fibers which preferably are rapidly solubilized in biological fluids. The method of forming the long, fine diameter glass fibers includes maintaining a ratio of the velocity of the external surface of the peripheral wall of the fiberizing disk to the velocity of the glass passing through the fiberizing orifices within a specific range (the disc/glass velocity ratio); maintaining a ratio of the velocity of the air exiting the air ring to the velocity of the glass passing through the fiberizing orifices within a specific range (the air-ring/glass velocity ratio); and maintaining a ratio of the BTU content of the fuel expended forming the hot attenuating combustion gases to the BTU content of a pound of molten glass being fiberized within a specific range (the attenuating combustion gases/glass heat content ratio). Air-laid and wet-laid fibrous mats are made from these glass fibers for various applications, such as but not limited to, battery separators, ASHRAE paper, and HEPA and ULPA filtration papers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.