US4923742A
Expired / Lapsed
US
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Elastomeric polyether block amide nonwoven web
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1988-10-14
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Granted: 1990-05-08
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Expires: 2008-10-14
Abstract
Abstract An elastomeric nonwoven web is formed by meltblowing fibers composed of a polyether block amide copolymer.
Inventors
- 👤 Thomas M. Killian
- 👤 Tony J. Wisneski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:38
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/602; Y10T442/68; Y10T442/699
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
73 words
A composite elastic nonwoven web comprised of: from about 50-99 percent, by weight, of a coherent matrix of meltblown fibers of a polyether block amide copolymer having the formula: ##STR3## where n is a positive integer, PA represents a polyamide segment and PE represents a polyether segment; and from about 1-50 percent, by weight, of at least one type of particulate material selected from the group consisting of activated charcoal and powdered superabsorbent.
Claim 2
Dependent Claim
73 words
A composite elastic nonwoven web comprised of: from about 50-99 percent, by weight, of a coherent matrix of meltblown fibers of a polyether block amide copolymer having the formula: ##STR3## where n is a positive integer, PA represents a polyamide segment and PE represents a polyether segment; and from about 1-50 percent, by weight, of at least one type of particulate material selected from the group consisting of activated charcoal and powdered superabsorbent.
Claim 3
Dependent Claim
41 words
The composite plastic nonwoven web of claim 1, wherein said coherent matrix comprises from about 75-95 percent, by weight, said composite elastic nonwoven web and said particulate material comprises from about 5-25 percent, by weight, of said composite elastic nonwoven web.
Claim 4
Dependent Claim
42 words
The composite elastic nonwoven web of claim 1, wherein said coherent matrix comprises from about 85-95 percent, by weight, of said composite elastic nonwoven web and said particulate material comprises from about 5-15 percent, by weight, of said composite plastic nonwoven web.
Claim 5
Dependent Claim
88 words
A composite elastic nonwoven web comprised of: from about 50-98 percent, by weight, of a coherent matrix of meltblown fibers of a polyether block amide copolymer having the formula: ##STR4## where n is a positive integer, PA represents a polyamide segment and PE represents a polyether segment; and from about 1-49 percent, by weight, of at least one type of other fiber; and from about 1-49 percent, by weight of at least one type of particulate material selected from the group consisting of activated charcoal and powdered superabsorbent.
Claim 6
Dependent Claim
88 words
A composite elastic nonwoven web comprised of: from about 50-98 percent, by weight, of a coherent matrix of meltblown fibers of a polyether block amide copolymer having the formula: ##STR4## where n is a positive integer, PA represents a polyamide segment and PE represents a polyether segment; and from about 1-49 percent, by weight, of at least one type of other fiber; and from about 1-49 percent, by weight of at least one type of particulate material selected from the group consisting of activated charcoal and powdered superabsorbent.
Claim 7
Dependent Claim
48 words
The composite elastic nonwoven web of claim 4, wherein said other fibers are selected from the group consisting of electrically conductive fibers, polyester fibers, polyamide fibers, glass fibers, polyolefin fibers, cellulosic derived fibers sheath-core multicomponent fibers, side-by-side multicomponent fibers, cotton fibers, silk fibers, wool fibers and absorbent fibers.
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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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |