US3616167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staple fibre fabrics and method of making the same
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-03-06
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Granted: 1971-10-26
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Expires: 1990-03-06
Abstract
Abstract The invention provides for a yarn or fabric containing bicomponent staple fibers wherein the staple fibers comprise two components existing in a sheath/core relationship, the core component having a lower melting point than the sheath component. Upon heat treatment the core component softens and exudes from the cut end portions of the staple fibers and bonds to adjacent fibers on cooling.
Inventors
- 👤 Raymond George Gosden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:53
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/541; D04H1/5412; D04H1/5418; D04H1/542; D04H1/549; D04H1/55; Y; Y10; Y10S; Y10S57/00; Y10S57/905; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T442/00; Y10T442/60; Y10T442/637; Y10T442/641
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
A textile article according to claim 1 comprising at least 50 percent by weight of bicomponent staple fibers.
Claim 2
Dependent Claim
21 words
A textile article according to claim 1 wherein the bicomponent staple fibers contain at least 25 percent of the core component.
Claim 3
Dependent Claim
34 words
A textile article according to claim 1 wherein the bicomponent fibers are polyamide fibers and comprise, as a sheath component, polyhexamethylene adipamide and as the core component polyepsilon caprolactam in a 70:30 weight ratio.
Claim 4
Dependent Claim
39 words
A textile article according to claim 1 wherein the fibers are polyamide fibers and comprise, as the sheath component, polyhexamethylene adipamide and, as the core component, a copolymer of polyhexamethylene adipamide and polyhexamethylene isophthalamide in a 70:30 weight ratio.
Claim 5
Dependent Claim
39 words
A textile article according to claim 1 wherein the fibers are polyester fibers and comprise, as the sheath component, polyethylene terephthalate and as the core component, a copolymer of polyethylene terephthalate and polyethylene isophthalate in a 40:60 mole ratio.
Claim 6
Dependent Claim
113 words
A process for the manufacture of a textile article from bicomponent staple fibers comprising forming the yarn or fabric from bicomponent staple fibers in which the components exist in a sheath/core relationship and the core component has a lower melting point than the sheath component, subjecting it to a heat treatment at a temperature above the melting point of the said core component and below the melting point of the said sheath component of the bicomponent staple fibers to cause the core component to soften and exude from the end portions thereof and contact adjacent fibers, and cooling the yarn or fabric to a temperature below the melting point of the core component.
Claim 7
Dependent Claim
21 words
A process according to claim 7 wherein the yarn to be subjected to the heat-treatment is passed over a heated plate.
Claim 8
Dependent Claim
22 words
A process according to claim 7 wherein the fabric to be subjected to a heat treatment is treated in an air oven.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |