US4253299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulked and entangled multifilament thermoplastic yarn
Assignee: BP Corp North America Inc
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Filing: 1979-05-03
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Granted: 1981-03-03
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Expires: 1999-05-03
Abstract
Abstract A bulked and entangled multifilament thermoplastic yarn and an improved process for the formation thereof which, when tufted into a fabric, presents a grass-like appearance. The yarn is made by melt spinning and water quenching filaments of a melt spinnable synthetic organic thermoplastic polymer, such as polypropylene, in a continuous process, drawing the filaments, imparting bulk and entanglement in a fluid jet entangling mechanism and taking up the thus entangled yarn on a yarn winder. Also disclosed is an improved fluid jet entangling mechanism employed in the process.
Inventors
- 👤 David E. Borenstein
- 👤 Jack A. Banning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:01
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/34; D02G3/44; D02G3/445; D02J; D02J1/00; D02J1/08; D10; D10B; D10B2505/00; D10B2505/20; D10B2505/202
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A multifilament melt-spinnable plastic yarn comprising a plurality of melt-spinnable, liquid quenched plastic filaments mutually entangled by laterally oriented filaments loops penetrating between the other filaments, said filaments having a noncircular cross section; and said yarn being characterized in that there are no more than about three segments of unentangled filaments of at least about 15 centimeters in length between adjacent entangled filament loops per meter of yarn on an average basis.
Claim 2
Dependent Claim
72 words
A multifilament melt-spinnable plastic yarn comprising a plurality of melt-spinnable, liquid quenched plastic filaments mutually entangled by laterally oriented filaments loops penetrating between the other filaments, said filaments having a noncircular cross section; and said yarn being characterized in that there are no more than about three segments of unentangled filaments of at least about 15 centimeters in length between adjacent entangled filament loops per meter of yarn on an average basis.
Claim 3
Dependent Claim
48 words
A yarn as defined in claim 1 wherein said yarn is characterized further in that there is no more than about one segment of unentangled filaments of at least about fifteen centimeters in length between adjacent entangled filament loops per five meters of yarn on an average basis.
Claim 4
Dependent Claim
47 words
A yarn as defined in claim 1 wherein said yarn is characterized further in that there are about one to about three segments of unentangled filaments of at least about fifteen centimeters in length between adjacent entangled filament loops per meter of yarn on an average basis.
Claim 5
Dependent Claim
18 words
A yarn as defined in claim 1 wherein said melt-spinnable plastic filaments are substantially rectangular in cross section.
Claim 6
Dependent Claim
35 words
A yarn as defined in claim 1 wherein said melt-spinnable plastic filaments are substantially rectangular in cross section with an aspect ratio of width to thickness of said cross section of approximately 6 to 1.
Claim 7
Dependent Claim
20 words
A yarn as defined in claim 1 wherein said melt-spinnable plastic filaments are formed of a polymer comprising a polyolefin.
Claim 8
Dependent Claim
16 words
A yarn as defined in claim 1 wherein said melt-spinnable plastic filaments are formed of polypropylene.
Claim 9
Dependent Claim
19 words
A yarn as defined in claim 1 wherein said melt-spinnable plastic filaments are formed of extruded, liquid quenched polypropylene.
Claim 10
Dependent Claim
24 words
A yarn as defined in claim 8 or claim 1 wherein said yarn comprises filaments having about 97 to about 191 denier per filament.
Claim 11
Dependent Claim
13 words
A yarn as defined in claim 9 wherein said yarn comprises 34 filaments.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |