Patent US3997929A successfully refreshed from Google Patents.
US3997929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier sleeve
Assignee: Carl Freudenberg KG
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Filing: 1975-08-15
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Granted: 1976-12-21
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Expires: 1995-08-15
Abstract
Abstract In a method of dyeing or bleaching shrinking yarns positioned in the form of cheeses or cross/wound packages on a fiber package by contacting said yarns with a dyeing or bleaching liquor while the same are maintained on said fiber package, the improvement which comprises utilizing as the packaged one having an interior sleeve of a porous, elastic, non-woven fabric of synthetic fibers, said fabric free of any binding agent, said synthetic fibers being largely non-dyeable under the conditions of the dyeing process.
Inventors
- 👤 Wolfram Schultheiss
- 👤 Harald Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:48
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/04; D06B23/042; B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
113 words
In a method of dyeing or bleaching shrinking yarns positioned in the form of cheeses or cross-wound packages on a fiber package having a carrier sleeve by contacting said yarns with a dyeing or bleaching liquor while the same are maintained on said fiber package, the improvement which comprises utilizing as the package one whose carrier sleeve is of a thickness of at least 2 mm and is made of a porous elastic non-woven fabric of synthetic fibers, said fibers selected from the group consisting of polyamides, polyolefins, polyesters and polyacrylics, said fabric free of any binding agent, said synthetic fibers being largely non-dyeable under the conditions of the dyeing or bleaching process.
Claim 2
Dependent Claim
113 words
In a method of dyeing or bleaching shrinking yarns positioned in the form of cheeses or cross-wound packages on a fiber package having a carrier sleeve by contacting said yarns with a dyeing or bleaching liquor while the same are maintained on said fiber package, the improvement which comprises utilizing as the package one whose carrier sleeve is of a thickness of at least 2 mm and is made of a porous elastic non-woven fabric of synthetic fibers, said fibers selected from the group consisting of polyamides, polyolefins, polyesters and polyacrylics, said fabric free of any binding agent, said synthetic fibers being largely non-dyeable under the conditions of the dyeing or bleaching process.
Claim 3
Dependent Claim
30 words
A process according to claim 1, wherein said non-woven fabric has been subjected to unilateral consolidation and has been rendered smooth on the side facing the yarn to be dyed.
Claim 4
Dependent Claim
18 words
A process according to claim 2, wherein the fibers of the non-woven fabric have been consolidated by needling.
Claim 5
Dependent Claim
21 words
A process according to claim 2, wherein the fibers of the non-woven fabric have been consolidated by heating the non-woven fabric.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein the non-woven fabric has a porous and elastic seam.
Claim 7
Dependent Claim
17 words
A process according to claim 1, wherein the fiber of the non-woven fabric is crimped, staple fiber.
Claim 8
Dependent Claim
17 words
A process according to claim 1, wherein the fiber of the non-woven fabric is crimped continuous fiber.
Claim 9
Dependent Claim
16 words
A process according to claim 1, wherein the fiber of the non-woven fabric is polyolefin fiber.
Claim 10
Dependent Claim
17 words
A process according to claim 1 wherein said package has a thickness between 2 and 20 mm.
Claim 11
Dependent Claim
17 words
A process according to claim 9 wherein said fabric has a thickness between 4 and 10 mm.
Claim 12
Dependent Claim
17 words
A process according to claim 9 wherein said fabric has a void volume between 53 and 99%.
Claim 13
Dependent Claim
17 words
A process according to claim 9 wherein said fabric has a void volume between 80 and 94%.
Claim 14
Dependent Claim
20 words
A process according to claim 9 wherein said fabric has a weight between 10 and 3,000 grams per square meter.
Claim 15
Dependent Claim
16 words
A process according to claim 13 wherein said fabric has an elasticity between 30 and 90%.
Claim 16
Dependent Claim
16 words
A process according to claim 14 wherein said fabric has an elasticity between 55 and 85%.
Claim 17
Dependent Claim
13 words
A method according to claim 1 wherein said synthetic fibers are polypropylene fibers.
Claim 18
Dependent Claim
64 words
A cheese or crosswound package having disposed thereon a dyeable or bleachable yarn, said package constituting a carrier sleeve of a porous elastic non-woven fabric of synthetic fibers, said synthetic fibers being selected from the group consisting of polyamides, polyolefins, polyesters, and polyacrylics and being largely non-dyeable, said fabric free of any binding agent, said fabric having a thickness of at least 2 mm.
Claim 19
Dependent Claim
64 words
A cheese or crosswound package having disposed thereon a dyeable or bleachable yarn, said package constituting a carrier sleeve of a porous elastic non-woven fabric of synthetic fibers, said synthetic fibers being selected from the group consisting of polyamides, polyolefins, polyesters, and polyacrylics and being largely non-dyeable, said fabric free of any binding agent, said fabric having a thickness of at least 2 mm.
Claim 20
Dependent Claim
17 words
A package according to claim 17 wherein said fabric has a thickness between 4 and 10 mm.
Claim 21
Dependent Claim
17 words
A package according to claim 17 wherein said fabric has a void volume between 53 and 99%.
Claim 22
Dependent Claim
17 words
A package according to claim 19 wherein said fabric has a void volume between 80 and 94%.
Claim 23
Dependent Claim
18 words
A package according to claim 19 wherein said fabric has a weight between 10 and 3,000 gms./sq. meter.
Claim 24
Dependent Claim
18 words
A package according to claim 21 wherein said fabric has a weight between 400 and 1200 gms/sq. meter.
Claim 25
Dependent Claim
16 words
A package according to claim 21 wherein said fabric has an elasticity between 30 and 90%.
Claim 26
Dependent Claim
16 words
A package according to claim 23 wherein said fabric has an elasticity between 55 and 85%.
Claim 27
Dependent Claim
13 words
A package according to claim 17 wherein said synthetic fibers are polypropylene fibers.
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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |