US4880691A
Expired / Lapsed
US
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Fine denier fibers of olefin polymers
Assignee: DIAMOND TECHNOLOGY PARTNERSHIP Co
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Filing: 1987-06-10
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Granted: 1989-11-14
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Expires: 2007-06-10
Abstract
Abstract Fine denier fibers and/or multi-filaments prepared from linear low density polyethylene copolymers (LLDPE) are found to offer advantages over other forms of polyolefins.
Inventors
- 👤 Lawrence H. Sawyer
- 👤 George W. Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:29
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/28; D01F6/30; D04; D04B; D04B1/00; D04B1/14; D04B1/16; C; C08; C08L; C08L2203/00; C08L2203/12; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/298; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/3976; Y10T442/40; Y10T442/425; Y10T442/50; Y10T442/60; Y10T442/608; Y10T442/696; Y10T442/697; Y10T442/698
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
25 words
Fine denier fibers comprised of melt-spun, melt-drawn linear low density copolymers of ethylene with at least one alpha-olefin of C 3 to C 12 .
Claim 2
Dependent Claim
25 words
Fine denier fibers comprised of melt-spun, melt-drawn linear low density copolymers of ethylene with at least one alpha-olefin of C 3 to C 12 .
Claim 3
Dependent Claim
19 words
The fibers of claim 1 wherein the alpha-olefin is at least one of C 4 to C 8 .
Claim 4
Dependent Claim
21 words
The fibers of claim 1 wherein the copolymer has a density in the range of about 0.86 to about 0.95 gms/cc.
Claim 5
Dependent Claim
21 words
The fibers of claim 1 wherein the copolymer has a density in the range of about 0.90 to about 0.94 gms/cc.
Claim 6
Dependent Claim
24 words
The fibers of claim 1 wherein the copolymer has a melt flow value in the range of about 0.01 to about 400 gms/10 min.
Claim 7
Dependent Claim
24 words
The fibers of claim 1 wherein the copolymer has a melt flow value in the range of about 6 to about 300 gms/10 min.
Claim 8
Dependent Claim
26 words
The fibers of claim 1 wherein the alpha-olefin of C 3 to C 12 comprises about 1% to about 30% of the weight of the copolymer.
Claim 9
Dependent Claim
18 words
The fibers of claim 1 wherein the alpha-olefin comprises at least one of C 4 -C 12 .
Claim 10
Dependent Claim
10 words
The fibers of claim 1 wherein the alpha-olefin comprises 1-octene.
Claim 11
Dependent Claim
12 words
The fibers of claim 1 wherein the alpha-olefin comprises 1-octene and 1-butene.
Claim 12
Dependent Claim
20 words
The fibers of claim 1 wherein the alpha-olefin comprises 2 or more of the C 3 to C 12 olefins.
Claim 13
Dependent Claim
12 words
The fibers of claim 1 wherein the fibers comprise a non-woven web.
Claim 14
Dependent Claim
12 words
The fibers of claim 1 wherein the fibers comprise a fiber bundle.
Claim 15
Dependent Claim
17 words
The fibers of claim 1 wherein the fibers are in blended form with other forms of fibers.
Claim 16
Dependent Claim
25 words
The fibers of claim 1 wherein the size of the fine denier fibers are in the range of about 1 denier to about 14 denier.
Claim 17
Dependent Claim
14 words
The fibers of claim 1 wherein the fine denier fibers comprise a woven fabric.
Claim 18
Dependent Claim
12 words
The fine denier fibers of claim 1 when blended with cotton fibers.
Claim 19
Dependent Claim
12 words
The fine denier fibers of claim 1 when blended with polyester fibers.
Claim 20
Dependent Claim
9 words
The fibers of claim 1 when of sub-denier size.
Claim 21
Dependent Claim
11 words
The fibers of claim 1 when cold-drawn subsequently to being melt-drawn.
Claim 22
Dependent Claim
14 words
The fibers of claim 20 when in blended form with other forms of fibers.
Claim 23
Dependent Claim
12 words
The fine denier fibers of claim 20 when blended with cotton fibers.
Claim 24
Dependent Claim
12 words
The fine denier fibers of claim 20 when blended with polyester fibers.
Claim 25
Dependent Claim
9 words
The fibers of claim 20 when of sub-denier size.
Claim 26
Dependent Claim
75 words
Fine denier fibers comprised of melt-spun, melt-drawn linear low density copolymers of ethylene with at least one alpha-olefin of C 3 to C 12 , wherein said copolymer has a density in the range of about 0.86 to about 0.95 gms/cc and a melt flow value in the range of about 0.01 to about 400 gms./10 min., said fibers comprising a filament bundle, a non-woven web, a woven fabric, a knitted fabric, or staple fibers.
Claim 27
Dependent Claim
75 words
Fine denier fibers comprised of melt-spun, melt-drawn linear low density copolymers of ethylene with at least one alpha-olefin of C 3 to C 12 , wherein said copolymer has a density in the range of about 0.86 to about 0.95 gms/cc and a melt flow value in the range of about 0.01 to about 400 gms./10 min., said fibers comprising a filament bundle, a non-woven web, a woven fabric, a knitted fabric, or staple fibers.
Claim 28
Dependent Claim
19 words
The fine denier fibers of claim 25 wherein the fibers are in blended form with other forms of fibers.
Claim 29
Dependent Claim
16 words
The fibers of claim 25 wherein the fibers have been cold-drawn after having been initially melt-drawn.
Claim 30
Dependent Claim
78 words
A multi-filament composition comprised of melt-spun, melt-drawn fibers of linear low density copolymers of ethylene with at least one alpha-olefin of C 3 to C 12 , wherein said copolymer has a density of the range of about 0.86 to about 0.95 gms/cc and a melt flow value in the range of about 0.01 to about 400 gms/10 min, said multi-filament composition comprising a filament bundle, a non-woven web, a woven fabric, a knitted fabric, or staple fibers.
Claim 31
Dependent Claim
78 words
A multi-filament composition comprised of melt-spun, melt-drawn fibers of linear low density copolymers of ethylene with at least one alpha-olefin of C 3 to C 12 , wherein said copolymer has a density of the range of about 0.86 to about 0.95 gms/cc and a melt flow value in the range of about 0.01 to about 400 gms/10 min, said multi-filament composition comprising a filament bundle, a non-woven web, a woven fabric, a knitted fabric, or staple fibers.
Claim 32
Dependent Claim
17 words
The composition of claim 28 wherein the multi-filaments are in blended form with other forms of fibers.
Claim 33
Dependent Claim
16 words
The fibers of claim 28 wherein the fibers have been cold-drawn after having been initially melt-drawn.
References Cited (Backward Citations)
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Cited
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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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |