US3877911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing fibers
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1972-09-13
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Granted: 1975-04-15
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Expires: 1992-09-13
Abstract
Abstract A method and apparatus for producing glass fibers are provided in which the fibers are cooled after forming, prior to a binder being applied. The fibers are formed by means of a rotary spinner from which streams of molten glass are ejected and subsequently attenuated into fibers and formed into a downwardly moving veil or tube of fibers by a high velocity blast of hot gases directed around the face of the spinner. The veil or tube of fibers is then moved in an oscillatory manner by a tubular member or lapper to aid in subsequently distributing the fibers on a conveyor belt. Below the lapper and supported thereby is a manifold with a plurality of inwardly-directed nozzles communicating therewith which direct streams of coolant toward the veil of fibers. Below the coolant manifold and nozzles is another manifold and nozzles through which binder is applied to the veil of fibers after being cooled. This binder apparatus is also mounted on the lapper and movable therewith. The inwardly-directed streams of coolant are supplied with sufficient energy to penetrate the veil of fibers and thereby cause cooling of the veil from both the outside and the inside.
Inventors
- 👤 John A Borst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:59
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/048
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
206 words
Apparatus for forming fibers from molten mineral material comprising, in combination, a rotatable body, means for supplying molten, fiber-forming material to said body, means for rotating said body to project streams of the material from the body by centrifugal force, means for delivering high velocity gases into engagement with said streams for attenuating the streams into fibers and for directing the fibers away from said body in a veil, a tubular member located in the path of the veil, means for moving said tubular member transversely of the path of the veil to direct the veil in directions transverse to the original path of movement, means positioned near said tubular member at a discharge end away from said rotatable body for supplying coolant toward the veil of fibers when the veil emerges from said tubular member, said coolant supply means including a plurality of nozzles and means for supplying coolant to said nozzles, means connecting said nozzles to said tubular member and positioning said nozzles uniformly around said tubular member and concentric therewith, means for applying heat-curable binder to the veil downstream of said coolant-supplying means, and means connecting said binder-applying means concentrically with the discharge end of said tubular member away from said rotatable body.
Claim 2
Dependent Claim
206 words
Apparatus for forming fibers from molten mineral material comprising, in combination, a rotatable body, means for supplying molten, fiber-forming material to said body, means for rotating said body to project streams of the material from the body by centrifugal force, means for delivering high velocity gases into engagement with said streams for attenuating the streams into fibers and for directing the fibers away from said body in a veil, a tubular member located in the path of the veil, means for moving said tubular member transversely of the path of the veil to direct the veil in directions transverse to the original path of movement, means positioned near said tubular member at a discharge end away from said rotatable body for supplying coolant toward the veil of fibers when the veil emerges from said tubular member, said coolant supply means including a plurality of nozzles and means for supplying coolant to said nozzles, means connecting said nozzles to said tubular member and positioning said nozzles uniformly around said tubular member and concentric therewith, means for applying heat-curable binder to the veil downstream of said coolant-supplying means, and means connecting said binder-applying means concentrically with the discharge end of said tubular member away from said rotatable body.
Claim 3
Independent Claim
115 words
A method of forming fibers from molten mineral material including delivering molten material to a rotatable body, rotating the body to project streams of the material therefrom by centrifugal force, directing high velocity gases toward the streams of material to attenuate the streams into fibers and to form the fibers into a veil, directing the veil in a path away from said rotatable body, applying transverse forces to the veil to move the veil transversely of the path, subsequently supplying a coolant in a plurality of streams toward the center of the veil of fibers after being diverted from the path, and applying heatcurable binder to the veil after supplying the coolant to the veil.
Claim 4
Independent Claim
115 words
A method of forming fibers from molten mineral material including delivering molten material to a rotatable body, rotating the body to project streams of the material therefrom by centrifugal force, directing high velocity gases toward the streams of material to attenuate the streams into fibers and to form the fibers into a veil, directing the veil in a path away from said rotatable body, applying transverse forces to the veil to move the veil transversely of the path, subsequently supplying a coolant in a plurality of streams toward the center of the veil of fibers after being diverted from the path, and applying heatcurable binder to the veil after supplying the coolant to the veil.
References Cited (Backward Citations)
US3347648A
Cited
US3625667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |