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US4267864A
Expired / Lapsed
US
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Fabric suitable for making sandbags and method for making the same
Assignee: Solutia Inc
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Filing: 1979-05-29
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Granted: 1981-05-19
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Expires: 1999-05-29
Abstract
Abstract A fabric suitable for use in making sandbags and the method of making the same wherein the fabric is woven from a yarn of twisted staple acrylic fibers having a fiber length of about 7 to 20 cm and a denier per filament of about 5 to 15, preferably 10 to 15, the yarn having a total denier of about 200 to 2650. The yarn is wrapped with a continuous filament yarn of a type which is degraded by ultraviolet light, with the wrapping being done in such a manner that fuzziness of the yarn is reduced to the point where the yarn can be woven into fabric without the use of size and at a weaving efficiency of at least about 70%.
Inventors
- 👤 Witold R. Kocay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:36
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/38; D03; D03D; D03D15/00; D03D15/20; D03D15/283; D03D15/40; D03D15/44; D03D15/46; D03D15/47; D03D15/50; D10; D10B; D10B2321/00; D10B2321/02; D10B2321/10; D10B2331/00; D10B2331/02; D10B2331/04; D10B2401/00; D10B2401/06; D10B2401/063; D10B2505/00; D10B2505/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
The method for making fabric suitable for use in making sandbags, comprising weaving a fabric from a yarn made up of staple acrylic fibers wrapped with a continuous filament, said fibers having a length of 7 to 20 centimeters and a denier per filament of about 10 to 15, said yarn having a total denier of about 200 to 2650, said continuous filament being of a type which is degraded by sunlight, said continuous filament being wrapped around the staple fibers in such a manner that hairiness of the yarn is reduced to the point where the yarn can be woven into fabric with a weaving efficiency of at least about 70%, said yarn being free of size during said weaving.
Claim 2
Independent Claim
121 words
The method for making fabric suitable for use in making sandbags, comprising weaving a fabric from a yarn made up of staple acrylic fibers wrapped with a continuous filament, said fibers having a length of 7 to 20 centimeters and a denier per filament of about 10 to 15, said yarn having a total denier of about 200 to 2650, said continuous filament being of a type which is degraded by sunlight, said continuous filament being wrapped around the staple fibers in such a manner that hairiness of the yarn is reduced to the point where the yarn can be woven into fabric with a weaving efficiency of at least about 70%, said yarn being free of size during said weaving.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the continuous filament is selected from the group consisting of cellulosic, polyamide, polyester, polyvinyl and polyolefin.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein the continuous filament is a polyamide.
Claim 5
Dependent Claim
104 words
A woven fabric made from a yarn made up of staple acrylic fibers having a denier per filament of 10 to 15 and a total denier of about 200 to 2650 having a denier per filament of 5 to 15 and a total denier of from about 200 to about 2650, said fibers being wrapped with a continuous filament of a type which is degraded by sunlight, said staple fibers being wrapped in such a manner that fuzziness of the fibers is reduced to the extent that the yarn can be woven into said fabric at a weaving efficiency of at least about 70%.
Claim 6
Dependent Claim
104 words
A woven fabric made from a yarn made up of staple acrylic fibers having a denier per filament of 10 to 15 and a total denier of about 200 to 2650 having a denier per filament of 5 to 15 and a total denier of from about 200 to about 2650, said fibers being wrapped with a continuous filament of a type which is degraded by sunlight, said staple fibers being wrapped in such a manner that fuzziness of the fibers is reduced to the extent that the yarn can be woven into said fabric at a weaving efficiency of at least about 70%.
Claim 7
Dependent Claim
22 words
The fabric of claim 4 wherein the continuous filament is selected from the group consisting of celluloses, polyamides, polyesters, polyvinyls and polyolefins.
Claim 8
Dependent Claim
11 words
The fabric of claim 5 wherein the continuous filament is polyamide.
Claim 9
Dependent Claim
17 words
The fabric of claim 5 wherein the continuous filament is in the form of a flat ribbon.
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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |