US4020623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel textile process
Assignee: PPG Industries Inc
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Filing: 1975-12-03
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Granted: 1977-05-03
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Expires: 1995-12-03
Abstract
Abstract A process for providing a dried textile yarn, glass fiber yarn in particular, is described in which a wet textile strand is passed through a zone of high fluid turbulence, a heating zone and wound rapidly on a spool. In the process as applied to glass fiber yarns, finished textile strands are provided on spools which are considerably larger than the finished bobbins normally used by textile weavers. The yarns are dried directly from the wet forming packages to a completely dried state thus eliminating the binder migration problems frequently encountered in the drying of fiber glass on forming packages.
Inventors
- 👤 Warren W. Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:29
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D02G3/18; B; B65; B65H; B65H71/00; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/312; B65H2701/3122
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
127 words
A method for preparing a textile strand from a wet textile strand feed comprising feeding the wet textile strand into a zone of fluid turbulence, passing the strand through said zone in a given direction, contacting the strand in said zone with a fluid directed in a path circumferential to the strand and the long axis of the zone to thereby agitate the strand and apply a false twist thereto, and thereby produce a rounded and well-consolidated strand, passing the strand from the zone of turbulence through a drying zone operating at a temperature sufficient to remove a substantial portion of the moisture from the strand and collecting the strand after drying on a spool in successive layers having the strand in side-by-side relationship in each layer.
Claim 2
Independent Claim
127 words
A method for preparing a textile strand from a wet textile strand feed comprising feeding the wet textile strand into a zone of fluid turbulence, passing the strand through said zone in a given direction, contacting the strand in said zone with a fluid directed in a path circumferential to the strand and the long axis of the zone to thereby agitate the strand and apply a false twist thereto, and thereby produce a rounded and well-consolidated strand, passing the strand from the zone of turbulence through a drying zone operating at a temperature sufficient to remove a substantial portion of the moisture from the strand and collecting the strand after drying on a spool in successive layers having the strand in side-by-side relationship in each layer.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein the fluid fed to the zone of turbulence is a gaseous fluid.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein the fluid fed to the zone of turbulence is air.
Claim 5
Independent Claim
127 words
A method of preparing a glass fiber strand from a wet package of fiber glass strand comprising feeding the wet strand from said package to a zone of fluid turbulence, passing the strand through said zone of fluid turbulence while simultaneously feeding a fluid to said zone, passing the fluid so fed to the zone of turbulence in a direction circumferential to the path of said strand and at a high velocity to thereby agitate the strand and impart a false twist thereto and to thereby form a rounded and well-consolidated strand, removing the strand so treated, drying the strand as it is removed in strand form and winding the strand on a spool in layers with the strand in side-by-side contact as wound in each layer.
Claim 6
Independent Claim
127 words
A method of preparing a glass fiber strand from a wet package of fiber glass strand comprising feeding the wet strand from said package to a zone of fluid turbulence, passing the strand through said zone of fluid turbulence while simultaneously feeding a fluid to said zone, passing the fluid so fed to the zone of turbulence in a direction circumferential to the path of said strand and at a high velocity to thereby agitate the strand and impart a false twist thereto and to thereby form a rounded and well-consolidated strand, removing the strand so treated, drying the strand as it is removed in strand form and winding the strand on a spool in layers with the strand in side-by-side contact as wound in each layer.
Claim 7
Dependent Claim
12 words
The method of claim 4 wherein the fluid is a gaseous fluid.
Claim 8
Dependent Claim
10 words
The method of claim 4 wherein the fluid is air.
Claim 9
Dependent Claim
22 words
The method of claim 6 wherein the air flowing circumferentially in said zone is traveling at 20,000 to 1,070,000 revolutions per minute.
Claim 10
Dependent Claim
22 words
The method of claim 5 wherein the fluid flowing circumferentially in said zone is traveling at 20,000 to 1,070,000 revolutions per minute.
Claim 11
Independent Claim
120 words
A method of treating glass fiber strand from a wet forming package of glass fiber strand comprising feeding the glass fiber strand from said wet forming package to a zone of fluid turbulence, passing the wet strand through said zone, continuously contacting said strand in said zone with a fluid flowing circumferentially around said zone at a high rate of speed to thereby agitate the strand and impart a false twist thereto during its passage through said zone, to thereby produce a rounded and well-consolidated strand, passing the strand from said fluid turbulence zone through an elongated drying zone, drying the strand as it passes through said drying zone and winding the dried strand on a spool in successive layers.
Claim 12
Independent Claim
120 words
A method of treating glass fiber strand from a wet forming package of glass fiber strand comprising feeding the glass fiber strand from said wet forming package to a zone of fluid turbulence, passing the wet strand through said zone, continuously contacting said strand in said zone with a fluid flowing circumferentially around said zone at a high rate of speed to thereby agitate the strand and impart a false twist thereto during its passage through said zone, to thereby produce a rounded and well-consolidated strand, passing the strand from said fluid turbulence zone through an elongated drying zone, drying the strand as it passes through said drying zone and winding the dried strand on a spool in successive layers.
Claim 13
Dependent Claim
12 words
The method of claim 9 wherein the fluid is a gaseous fluid.
Claim 14
Dependent Claim
10 words
The method of claim 9 wherein the fluid is air.
Claim 15
Dependent Claim
26 words
The method of claim 9 wherein the fluid is air and the air is flowing circumferentially in said zone at 20,000 to 1,070,000 revolutions per minute.
Claim 16
Dependent Claim
26 words
The method of claim 9 wherein the fluid is air and the air is flowing circumferentially in said zone at 150,000 to 310,000 revolutions per minute.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |