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US4950531A
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Nonwoven hydraulically entangled non-elastic web and method of formation thereof
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1988-03-18
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Granted: 1990-08-21
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Expires: 2008-03-18
Abstract
Abstract Composite nonwoven non-elastic web materials and methods of forming the same are disclosed. The composite nonwoven non-elastic web materials are formed by hydraulically entangling a laminate of (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material. The nonwoven material can comprise at least one of pulp fibers, staple fibers, meltblown fibers and substantially continuous filaments. The nonwoven material can also be a net, foam, etc. Each of the meltblown fiber layer and the nonwoven material layer is preferably made of non-elastic material.
Inventors
- 👤 Fred R. Radwanski
- 👤 Lloyd E. Trimble
- 👤 Leon E. Chambers, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:18
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H5/00; D04H5/02; D04H1/42; D04H1/425; D04H1/46; D04H1/492; D04H1/495; D04H1/498; D04H1/54; D04H1/56; D04H3/00; D04H3/08; D04H3/14; D04H5/03; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/626; Y10T442/659; Y10T442/666; Y10T442/668; Y10T442/68
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
55 words
A composite nonwoven non-elastic web material formed by hydraulically entangling a laminate comprising (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material, said hydraulic entangling causing the entanglement and intertwining of said meltblown fibers and said nonwoven material so as to provide a nonwoven non-elastic web material.
Claim 2
Dependent Claim
55 words
A composite nonwoven non-elastic web material formed by hydraulically entangling a laminate comprising (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material, said hydraulic entangling causing the entanglement and intertwining of said meltblown fibers and said nonwoven material so as to provide a nonwoven non-elastic web material.
Claim 3
Dependent Claim
33 words
A composite nonwoven non-elastic web material according to claim 1, wherein said laminate consists essentially of (a) at least one layer of meltblown fibers and (b) at least one layer of nonwoven material.
Claim 4
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 1, wherein said meltblown fibers are polypropylene meltblown fibers.
Claim 5
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 1, wherein said nonwoven material comprises substantially continuous non-elastic filaments.
Claim 6
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 4, wherein said substantially continuous non-plastic filaments are spunbond filaments.
Claim 7
Dependent Claim
28 words
A composite nonwoven non-elastic web material according to claim 5, wherein said spunbond filaments are formed of a material selected from the group consisting of polypropylene and polyester.
Claim 8
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 1, wherein said nonwoven material comprises non-elastic pulp fibers.
Claim 9
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 7, wherein said non-elastic pulp fibers are cellulose pulp fibers.
Claim 10
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 7, wherein said non-elastic pulp fibers are wood pulp fibers.
Claim 11
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 1, wherein said, nonwoven material comprises non-elastic staple fibers.
Claim 12
Dependent Claim
19 words
A composite nonwoven non-elastic web material according to claim 10, wherein said non-elastic staple fibers are synthetic staple fibers.
Claim 13
Dependent Claim
29 words
A composite nonwoven non-elastic web material according to claim 11, wherein said synthetic staple fibers are made of a material selected from the group consisting of rayon and polypropylene.
Claim 14
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 1, wherein said nonwoven material comprises non-elastic meltblown fibers.
Claim 15
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 13, wherein said non-elastic meltblown fibers are meltblown microfibers.
Claim 16
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 13, wherein said non-elastic meltblown fibers are meltblown macrofibers.
Claim 17
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 1, wherein said nonwoven material comprises a non-elastic net.
Claim 18
Dependent Claim
18 words
A composite nonwoven non-elastic web material according to claim 1, wherein said nonwoven material comprises a foam material.
Claim 19
Dependent Claim
25 words
A composite nonwoven non-elastic web material according to claim 1, wherein each of said meltblown fibers and said nonwoven material consists essentially of non-elastic material.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |