US4741949A
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Elastic polyetherester nonwoven web
Assignee: Raytheon Co
•
Filing: 1986-10-15
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Granted: 1988-05-03
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Expires: 2006-10-15
Abstract
Abstract An elastomeric nonwoven web is formed by meltblowing fibers composed of a polyetherester. Nonelastic fibers and/or particulate materials may also be included in the web.
Inventors
- 👤 Michael T. Morman
- 👤 Tony J. Wisneski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/25; Y10T428/253; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/602; Y10T442/608; Y10T442/614; Y10T442/626; Y10T442/68; Y10T442/697
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
33 words
Elastic meltblown microfibers comprising: a polyetherester material having the general formula of: ##STR3## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 2
Dependent Claim
33 words
Elastic meltblown microfibers comprising: a polyetherester material having the general formula of: ##STR3## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 3
Dependent Claim
20 words
The elastic meltblown fibers of claim 1, wherein "a" is selected from the group consisting of 2, 4 or 6.
Claim 4
Dependent Claim
12 words
The elastic meltblown fibers of claim 1, wherein said fibers are microfibers.
Claim 5
Dependent Claim
40 words
The elastic meltblown microfibers of claim 1, wherein said material has a melt flow of from about 4.0 to about 7.0 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190° C. under a 2,160 gram load.
Claim 6
Dependent Claim
30 words
The elastic meltblown microfibers of claim 1, wherein said material has a melting point of from about 275° F. to about 425° F. when measured in accordance with ASTM D-3418.
Claim 7
Dependent Claim
30 words
The elastic meltblown microfibers of claim 1, wherein said material has an elongation at break of from about 200 percent to 600 percent when measured in accordance with ASTM D-638.
Claim 8
Dependent Claim
35 words
Elastic meltblown microfibers consisting essentially of: a polyetherester material having the general formula of: ##STR4## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 9
Dependent Claim
35 words
Elastic meltblown microfibers consisting essentially of: a polyetherester material having the general formula of: ##STR4## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 10
Dependent Claim
41 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyethereseter material having the general formula of: ##STR5## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 11
Dependent Claim
41 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyethereseter material having the general formula of: ##STR5## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 12
Dependent Claim
20 words
The elastic nonwoven web of claim 8, wherein "a" is selected from the group consisting of 2, 4 or 6.
Claim 13
Dependent Claim
12 words
The elastic nonwoven web of claim 8, wherein said fibers are microfibers.
Claim 14
Dependent Claim
40 words
The elastic nonwoven web of claim 8, wherein said material has a melt flow of from about 4.0 to about 7.0 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190° C. under a 2,160 gram load.
Claim 15
Dependent Claim
30 words
The elastic nonwoven web of claim 8, wherein said material has a melting point of from about 275° F. to about 425° F. when measured in accordance with ASTM D-3418.
Claim 16
Dependent Claim
30 words
The elastic nonwoven web of claim 8, wherein said material has an elongation at break of from about 200 percent to 500 percent when measured in accordance with ASTM D-638.
Claim 17
Dependent Claim
43 words
An elastic nonwoven web consisting essentially of: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR6## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 18
Dependent Claim
43 words
An elastic nonwoven web consisting essentially of: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR6## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers.
Claim 19
Dependent Claim
58 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR7## where: "G" is selected from the group consising of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and from about 1 percent, by weight, to about 40 percent, by weight, of nonelastic secondary fibers.
Claim 20
Dependent Claim
58 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR7## where: "G" is selected from the group consising of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and from about 1 percent, by weight, to about 40 percent, by weight, of nonelastic secondary fibers.
Claim 21
Dependent Claim
20 words
The elastic nonwoven web of claim 15, wherein "a" is selected from the group consisting of 2, 4 or 6.
Claim 22
Dependent Claim
12 words
The elastic nonwoven web of claim 15, wherein said fibers are microfibers.
Claim 23
Dependent Claim
40 words
The elastic nonwoven web of claim 15, wherein said material has a melt flow of from about 4.0 to about 7.0 grams per 10 minutes when measured in accordance with ASTM D-1238 at 190° C. under a 2,160 gram load.
Claim 24
Dependent Claim
30 words
The elastic nonwoven web of claim 15, wherein said material has a melting point of from about 275° F. to about 425° F. when measured in accordance with ASTM D-2117.
Claim 25
Dependent Claim
30 words
The elastic nonwoven web of claim 15, wherein said material has an elongation at break of from about 200 percent to 600 percent when measured in accordance with ASTM D-638.
Claim 26
Dependent Claim
20 words
The elastic nonwoven web of claim 15, wherein said secondary fibers have an average length of 0.25 inch or less.
Claim 27
Dependent Claim
20 words
The elastic nonwoven web of claim 15, wherein said secondary fibers have an average length of greater than 0.25 inch.
Claim 28
Dependent Claim
24 words
The elastic nonwoven web of claim 15 comprising from about 1 percent, by weight, to about 20 percent, by weight, of said secondary fibers.
Claim 29
Dependent Claim
48 words
The elastic nonwoven web of claim 15, wherein said secondary fibers are selected from the group consisting of polyester fibers, polyamide fibers, glass fibers, polyolefin fibers, cellulosic derived fibers, multi-component fibers, natural fibers, absorbent fibers, electrically conductive fibers or blends of two or more of said secondary fibers.
Claim 30
Dependent Claim
25 words
The elastic nonwoven web of claim 24, wherein said natural fibers are selected from the group consisting of cotton fibers, wool fibers or silk fibers.
Claim 31
Dependent Claim
23 words
The elastic nonwoven web of claim 24, wherein said polyolefin fibers are selected from the group consisting of polyethylene fibers or polypropylene fibers.
Claim 32
Dependent Claim
24 words
The elastic nonwoven web of claim 24, wherein said cellulosic derived fibers are selected from the group consisting of rayon fibers or wood fibers.
Claim 33
Dependent Claim
14 words
The elastic nonwoven web of claim 24, wherein said polyamide fibers are nylon fibers.
Claim 34
Dependent Claim
23 words
The elastic nonwoven web of claim 24, wherein said multi component fibers are selected from the group consisting of sheath-core or side-by-side fibers.
Claim 35
Dependent Claim
67 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR8## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and from about 1 percent, by weight, to about 80 percent, by weight, of nonelastic secondary fibers having an average length of 0.25 inch or less.
Claim 36
Dependent Claim
67 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR8## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and from about 1 percent, by weight, to about 80 percent, by weight, of nonelastic secondary fibers having an average length of 0.25 inch or less.
Claim 37
Dependent Claim
24 words
The elastic nonwoven web of claim 30 comprising from about 1 percent, by weight, to about 80 percent, by weight, of said secondary fibers.
Claim 38
Dependent Claim
24 words
The elastic nonwoven web of claim 30 comprising from about 1 percent, by weight, to about 50 percent, by weight, of said secondary fibers.
Claim 39
Dependent Claim
41 words
The elastic nonwoven web of claim 30 comprising from about 1 percent, by weight, to about 40 percent, by weight, of said secondary fibers and from about 1 percent, by weight, to about 80 percent, by weight, of a particulate material.
Claim 40
Dependent Claim
60 words
An elastic nonwoven web consisting essentially of: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR9## where: G is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and a, m and n are positive integers; and from about 1 percent, by weight, to about 40 percent, by weight, of nonelastic secondary fibers.
Claim 41
Dependent Claim
60 words
An elastic nonwoven web consisting essentially of: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR9## where: G is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and a, m and n are positive integers; and from about 1 percent, by weight, to about 40 percent, by weight, of nonelastic secondary fibers.
Claim 42
Dependent Claim
57 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR10## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and from about 1 percent, by weight, to about 80 percent, by weight, of particulate materials.
Claim 43
Dependent Claim
57 words
An elastic nonwoven web comprising: a coherent matrix of fibers formed from a polyetherester material having the general formula of: ##STR10## where: "G" is selected from the group consisting of: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and from about 1 percent, by weight, to about 80 percent, by weight, of particulate materials.
Claim 44
Dependent Claim
55 words
A process for extruding a polyetherester material having the general formula of: ##STR11## where: "G" is selected from the group including: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and wherein said polyetherester material is treated prior to extrusion to achieve a moisture content of at least about 0.1 percent, by weight.
Claim 45
Dependent Claim
55 words
A process for extruding a polyetherester material having the general formula of: ##STR11## where: "G" is selected from the group including: poly(oxyethylene)-alpha,omega-diol poly(oxypropylene)-alpha,omega-diol poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; and wherein said polyetherester material is treated prior to extrusion to achieve a moisture content of at least about 0.1 percent, by weight.
Claim 46
Dependent Claim
18 words
The process of claim 36, wherein the moisture content achieved is at least about 0.2 percent, by weight.
Claim 47
Dependent Claim
16 words
The process of claim 36, wherein the polyetherester material is meltblown to form a nonwoven web.
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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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |