US3916611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed filament yarn
Assignee: Kanebo Ltd
•
Filing: 1974-06-10
•
Granted: 1975-11-04
•
Expires: 1994-06-10
Abstract
Abstract Synthetic fibers having natural fiber-like touch, gloss, texture and appearance are produced by spinning a polyester and a polyamide through a common spinneret simultaneously to form mixed filaments consisting of multisegment filaments, in each of which the polyester is divided by the polyamide into at least three segments, and polyester single component filaments, drawing the mixed filaments and then subjecting the drawn mixed filaments to a false twisting to fibrillate the multisegment filaments.
Inventors
- 👤 Masao Matsui
- 👤 Susumu Tokura
- 👤 Masahiro Yamabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/14; Y; Y10; Y10S; Y10S57/00; Y10S57/907
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
AN ARTICLE OF MANUFACTURE, A YARN CONSISTING ESSENTIALLY OF A MIXTURE OF (A) A COMPONENT CONSISTING OF FIBRILLATED COMPOSITE FILAMENTS OF POLYESTER AND POLYAMIDE IN EACH OF WHICH THE POLYESTER IS DIVIDED IN CROSS SECTION INTO AT LEAST THREE SEGMENTS BY THIN CROSS SECTIONAL LAYERS OF POLYAMIDE HAVING A UNIFORM THICKNESS AND WHICH IN CROSS SECTION DIVERGE RADIALLY AND (B) A COMPONENT CONSISTING OF POLYESTER MONOFILAMENTS, SAID COMPONENTS (A) AND (B) BEING MIXED HOMOGENEOUSLY AND ENTANGLED WITH EACH OTHER, THE RATIO OF COMPONENT (A) TO TOTAL YARN BEING 40 TO 70% BY WEIGHT, THE RATIO OF POLYAMIDE TO THE TOTAL YARN BEING LESS THAN 30% BY WEIGHT, THE RATIO OF POLYAMIDE TO COMPONENT (A) BEING LESS THAN 40% BY WEIGHT, EACH POLYESTER SEGMENT OF COMPONENT (A) BEING LESS THAN 1 DENIER AND SAID POLYESTER FILAMENTS OF COMPONENT (B) BEING MORE THAN 2 DENIERS,
Claim 2
Dependent Claim
143 words
AN ARTICLE OF MANUFACTURE, A YARN CONSISTING ESSENTIALLY OF A MIXTURE OF (A) A COMPONENT CONSISTING OF FIBRILLATED COMPOSITE FILAMENTS OF POLYESTER AND POLYAMIDE IN EACH OF WHICH THE POLYESTER IS DIVIDED IN CROSS SECTION INTO AT LEAST THREE SEGMENTS BY THIN CROSS SECTIONAL LAYERS OF POLYAMIDE HAVING A UNIFORM THICKNESS AND WHICH IN CROSS SECTION DIVERGE RADIALLY AND (B) A COMPONENT CONSISTING OF POLYESTER MONOFILAMENTS, SAID COMPONENTS (A) AND (B) BEING MIXED HOMOGENEOUSLY AND ENTANGLED WITH EACH OTHER, THE RATIO OF COMPONENT (A) TO TOTAL YARN BEING 40 TO 70% BY WEIGHT, THE RATIO OF POLYAMIDE TO THE TOTAL YARN BEING LESS THAN 30% BY WEIGHT, THE RATIO OF POLYAMIDE TO COMPONENT (A) BEING LESS THAN 40% BY WEIGHT, EACH POLYESTER SEGMENT OF COMPONENT (A) BEING LESS THAN 1 DENIER AND SAID POLYESTER FILAMENTS OF COMPONENT (B) BEING MORE THAN 2 DENIERS,
Claim 3
Dependent Claim
12 words
The article of claim 1 in which the polyamide is polyhexamethylene adipamide.
Claim 4
Dependent Claim
12 words
The article of claim 1 in which the polyamide is epsilon -polycaproamide.
Claim 5
Dependent Claim
12 words
The article of claim 1 in which the polyester is polyethylene terephthalate.
Claim 6
Dependent Claim
38 words
The article of claim 1, in which said polyamide is selected from the group consisting of polyhexamethylene adipamide, epsilon -polycaproamide and copolyamides thereof, and said polyester is selected from the group consisting of polyethylene terephthalate and copolyesters thereof.
References Cited (Backward Citations)
US3660993A
Cited
US3725192A
Cited
US3639556A
Cited
US3627868A
Cited
US3718534A
Cited
US3705226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |