Non-linear multicomponent glass fibers from linear primaries
AssigneeJohns Manville International, Inc.
InventorsStephen Edward Gross, William Henry Kielmeyer, Michael D. Peterson, Jon F. Bauer
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Abstract
Glass fibers of curly habit may be prepared from a heterogeneous melt of blended particles of at least two distinct glasses. Linear glass primaries controllable in pot and marble processing may be prepared from the heterogeneous melts. Fibers prepared from the randomly heterogeneous primaries exhibit a unique biodissolution mechanism and high biodissolution rates. The process is also amenable to other glass fiberization processes, including the rotary process and the sliver process.
Claims18
Glass primaries having an average diameter between about 10 .mu.m and 1000 .mu.m, said primaries comprising on average a randomly variegated structure having a random multiplicity of demes of distinct glasses when viewed in cross-section.
Curly glass fibers prepared from at least two distinct glasses distributed within the fibers, said fibers characterized by a dissolution mechanism in simulated physiological fluid which preferentially dissolves portions of said fibers, resulting in a compartmentalized skeleton when viewed by scanning electron microscopy.
Multi-component curly glass fibers having fiber diameters from 0.05 .mu.m to about 15 .mu.m, said fibers characterized by a cross-section exhibiting, on average, a randomly variegated structure having a multiplicity of distinct glass demes.
A curly glass fiber prepared from two distinct glasses, said glasses each falling within the compositional range comprising, in weight percent:
- 50-64% SiO.sub.2,
- 1-6% Al.sub.2 O.sub.3,
- 11-24% B.sub.2 O.sub.3,
- 8-16% Na.sub.2 O,
- 0-3% K.sub.2 O,
- 2-9% CaO, and
- 1-7% MgO.
Acoustic insulation comprised of multi-component curly glass fibers having fiber diameters from 0.05 .mu.m to about 15 .mu.m, with said fibers being characterized by a cross-section exhibiting, on average, a randomly variegated structure having a random multiplicity of distinct glass demes.
Glass fiber filtration media comprised of multi-component curly glass fibers having fiber diameters from 0.05 .mu.m to about 15 .mu.m, with said fiber being characterized by a cross-section exhibiting, on average, a randomly variegated structure having a random multiplicity of distinct glass demes.
Dependencies are inferred from the claim text.