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US5322650A
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Method and apparatus for producing fibers
Assignee: Saint Gobain TM KK
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Filing: 1992-03-13
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Granted: 1994-06-21
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Expires: 2012-03-13
Abstract
Abstract A molten fiber material flow is rendered into a plurality of fibers by means of a liquid jet such as water jet in place of a pressurized gas or air. The flow moves downwardly in a vertical direction while the water jet cuts it at an inclined angle. The water jet is formed by a single nozzle or plural nozzles of a flat-jet or round-jet type.
Inventors
- 👤 Shigeo Endo
- 👤 Haruo Kawashima
- 👤 Kimio Hirata
- 👤 Yasuo Misu
- 👤 Akira Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:19
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/10; C03B19/1005; C03B19/1045; C03B37/00; C03B37/01; C03B37/06; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
A method for producing fibers, comprising the steps of fusing a fiber material, consisting essentially of either Al 2 O 3 --SiO 2 ceramic or Al 2 O 3 --SiO 2 --C 2 O 3 ceramic, so as to obtain a molten fiber material, forming a flow of said molten fiber material, and applying a liquid jet onto the flow of said molten fiber material so as to produce a plurality of fibers.
Claim 2
Independent Claim
73 words
A method for producing fibers, comprising the steps of fusing a fiber material, consisting essentially of either Al 2 O 3 --SiO 2 ceramic or Al 2 O 3 --SiO 2 --C 2 O 3 ceramic, so as to obtain a molten fiber material, forming a flow of said molten fiber material, and applying a liquid jet onto the flow of said molten fiber material so as to produce a plurality of fibers.
Claim 3
Dependent Claim
39 words
A method as defined in claim 1 wherein said flow of said molten fiber material is cut by said liquid jet being set at an inclined angle in respect to the direction of flow of said molten fiber material.
Claim 4
Dependent Claim
36 words
A method as defined in claim 2 wherein said liquid jet is formed by a single nozzle so as to cut said flow of said molten fiber material while it moves downwardly in a vertical direction.
Claim 5
Dependent Claim
26 words
A method as defined in claim 3 wherein said inclined angle ranges from 10 degrees to 90 degrees in respect to the axis of said nozzle.
Claim 6
Dependent Claim
34 words
A method as defined in claim 2 wherein said liquid jet is formed by a plurality of nozzles in such a manner that plural liquid jets cut the flow of said molten fiber material.
Claim 7
Dependent Claim
24 words
A method as defined in claim 5 wherein said inclined angle ranges from 30 degrees to 60 degrees between each axis of said nozzles.
Claim 8
Dependent Claim
24 words
A method as defined in claim 2 wherein said molten fiber material flows vertically downwardly at a flow rate of 75 to 500 kg/hr.
Claim 9
Dependent Claim
32 words
A method as defined in claim 2 wherein said liquid jet has an average liquid pressure of 100 to 2,000 kgf/cm 2 and an average flow velocity of 15 to 100 l/min.
Claim 10
Dependent Claim
26 words
A method as defined in claim 2 wherein the energy required for producing said fibers by said liquid jet ranges from 0.05 kwh/kg to 0.5 kwh/kg.
Claim 11
Dependent Claim
45 words
A method as defined in claim 2 wherein said molten fiber material comprises an Al 2 O 3 --SiO 2 ceramic fiber composition containing Al 2 O 3 , 35 to 65 wt %, SiO 2 , 30 to 60 wt %, and minor impurities.
Claim 12
Dependent Claim
58 words
A method defined in claim 2 wherein said molten fiber material comprises an Al 2 O 3 --SiO 2 --Cr 2 O 3 ceramic fiber composition containing Al 2 O 3 , 35 to 65 wt %, SiO 2 , 30 to 60 wt %, Cr 2 O 3 , 1 to 6 wt %, and minor impurities.
Claim 13
Dependent Claim
75 words
A method as defined in claim 5 wherein said plurality of nozzles comprises at least three round-jet water jet nozzles arranged in such a manner that said round-jet water jet nozzles produce at least three water jets cutting said flow of said molten fiber material at an inclined angle, and wherein each of said at least three water jets is a tangent which touches an outer surface of said flow of said molten fiber material.
Claim 14
Dependent Claim
42 words
A method as defined in claim 12 wherein, until said at least three water jets cut said flow of said molten fiber material so as to produce a plurality of fibers, said at least three water jets flow without significant diverging phenomena.
Claim 15
Independent Claim
119 words
An apparatus for producing fibers, comprising means for thermally fusing a fiber material, consisting essentially of either Al 2 O 3 --SiO 2 ceramic or Al 2 O 3 --SiO 2 --Cr 2 O 3 ceramic, so as to obtain molten fiber material, means for discharging said molten fiber material as a continuous flow thereof, and liquid jet means for applying liquid pressure to said flow so as to produce a plurality of fibers, wherein said liquid jet means comprises at least three round-jet type water jet nozzles arranged in such a manner that said at least three water jet nozzles produce at least three water jets cutting said flow of said molten fiber material at an inclined angle.
Claim 16
Independent Claim
119 words
An apparatus for producing fibers, comprising means for thermally fusing a fiber material, consisting essentially of either Al 2 O 3 --SiO 2 ceramic or Al 2 O 3 --SiO 2 --Cr 2 O 3 ceramic, so as to obtain molten fiber material, means for discharging said molten fiber material as a continuous flow thereof, and liquid jet means for applying liquid pressure to said flow so as to produce a plurality of fibers, wherein said liquid jet means comprises at least three round-jet type water jet nozzles arranged in such a manner that said at least three water jet nozzles produce at least three water jets cutting said flow of said molten fiber material at an inclined angle.
Claim 17
Dependent Claim
17 words
An apparatus as defined in claim 14 further comprising means for collecting said fibers and said liquid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-20 | 1997-12-20 | 1998-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-20 | 2001-12-20 | 2002-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-20 | 2005-12-20 | 2006-06-21 | $7700.00 | Window Closed / Lapsed |