US3978267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact twistless textile yarn comprising discontinuous fiber bonded by potentially adhesive composite fibers
Assignee: Imperial Chemical Industries Ltd
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Filing: 1975-02-24
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Granted: 1976-08-31
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Expires: 1995-02-24
Abstract
Abstract A compact yarn of staple fibers containing at least a proportion of potentially adhesive fibers bonded to contacting fibers. The compact yarn may be made by false twisting a sliver of the staple fibers by means of a fluid vortex followed by activating the potentially adhesive fibers.
Inventors
- 👤 Alan Selwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:09
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/402; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
A compact yarn comprising an assembly of discontinuous fibres, substantially free of continuous twist consisting of at least a proportion of potentially adhesive composite fibres selected from the group consisting of polyamide fibres and polyester fibres, said composite fibres comprising two components one of which is potentially adhesive and forms at least part of the surface of the composite fibres, said composite fibres being bonded by means of said potentially adhesive component to contacting fibres such that the bonded yarn has a linear density of up to 33 tex, an average stripping force as defined of at least 1.0g, a tenacity of at least 0.5g/dtex and a yarn stiffness as defined of less than 0.005.
Claim 2
Dependent Claim
115 words
A compact yarn comprising an assembly of discontinuous fibres, substantially free of continuous twist consisting of at least a proportion of potentially adhesive composite fibres selected from the group consisting of polyamide fibres and polyester fibres, said composite fibres comprising two components one of which is potentially adhesive and forms at least part of the surface of the composite fibres, said composite fibres being bonded by means of said potentially adhesive component to contacting fibres such that the bonded yarn has a linear density of up to 33 tex, an average stripping force as defined of at least 1.0g, a tenacity of at least 0.5g/dtex and a yarn stiffness as defined of less than 0.005.
Claim 3
Dependent Claim
20 words
A compact yarn according to claim 1 in which the yarn has an average stripping force of at least 3.0g.
Claim 4
Dependent Claim
19 words
A compact yarn according to claim 1 in which the discontinuous fibres consist wholly of potentially adhesive composite fibres.
Claim 5
Dependent Claim
23 words
A compact yarn according to claim 1 in which the discontinuous fibres comprise a mixture of non-adhesive fibres and potentially adhesive composite fibres.
Claim 6
Dependent Claim
28 words
A compact yarn according to claim 4 in which the potentially adhesive composite fibres comprise 5% to 25% by weight on the weight of the mixture of fibres.
Claim 7
Dependent Claim
31 words
A compact yarn as in claim 1 wherein the non-adhesive fibres are selected from the group consisting of polyethylene terephthalate fibres, polyhexamethylene adipamide fibres, polyacrylonitrile fibres, natural fibres or mixtures thereof.
Claim 8
Dependent Claim
115 words
A compact yarn comprising an assembly of discontinuous fibres, substantially free of continuous twist consisting of at least a proportion of potentially adhesive composite fibres selected from the group consisting of polyamide fibres and polyester fibres, said composite fibres comprising two components one of which is potentially adhesive and forms at least part of the surface of the composite fibres, said composite fibres being bonded by means of said potentially adhesive component to contacting fibres such that the bonded yarn has a linear density of up to 43 tex, an average stripping force as defined of at least 1.0g, a tenacity of at least 0.5g/dtex and a yarn stiffness as defined of less than 0.003.
Claim 9
Dependent Claim
115 words
A compact yarn comprising an assembly of discontinuous fibres, substantially free of continuous twist consisting of at least a proportion of potentially adhesive composite fibres selected from the group consisting of polyamide fibres and polyester fibres, said composite fibres comprising two components one of which is potentially adhesive and forms at least part of the surface of the composite fibres, said composite fibres being bonded by means of said potentially adhesive component to contacting fibres such that the bonded yarn has a linear density of up to 43 tex, an average stripping force as defined of at least 1.0g, a tenacity of at least 0.5g/dtex and a yarn stiffness as defined of less than 0.003.
Claim 10
Dependent Claim
20 words
A compact yarn according to claim 7 in which the yarn has an average stripping force of at least 3.0g.
Claim 11
Dependent Claim
19 words
A compact yarn according to claim 7 in which the discontinuous fibres consist wholly of potentially adhesive composite fibres.
Claim 12
Dependent Claim
23 words
A compact yarn according to claim 7 in which the discontinuous fibres comprise a mixture of non-adhesive fibres and potentially adhesive composite fibres.
Claim 13
Dependent Claim
28 words
A compact yarn according to claim 10 in which the potentially adhesive composite fibres comprise 5% to 25% by weight on the weight of the mixture of fibres.
Claim 14
Dependent Claim
31 words
A compact yarn as in claim 7 wherein the non-adhesive fibres are selected from the group consisting of polyethylene terephthalate fibres, polyhexamethylene adipamide fibres, polyacrylonitrile fibres, natural fibres or mixtures thereof.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |