US5041104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven materials
Assignee: Bonar Carelle Ltd
•
Filing: 1988-07-27
•
Granted: 1991-08-20
•
Expires: 2008-07-27
Abstract
Abstract A nonwoven material comprises a lofted or loftable, particle-bonded nonwoven having fibres bonded together with an adhesive binder and containing functional particles (e.g. particles of a liquid-absorbent polymer) distributed therein and attached to the fibres by the adhesive binder.
Inventors
- 👤 Michael J. Seal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:25
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/435; D04H1/58; D04H1/60; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/29; Y10T428/2982; Y10T442/00; Y10T442/60; Y10T442/699
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
44 words
A nonwoven material containing a lofted or loftable particle-bonded nonwoven fabric, said fabric comprising (1) a matrix of fibers bonded together with a particulate adhesive binder and (2) functional particles distributed within said matrix and attached thereto by means of said particulate adhesive binder.
Claim 2
Dependent Claim
44 words
A nonwoven material containing a lofted or loftable particle-bonded nonwoven fabric, said fabric comprising (1) a matrix of fibers bonded together with a particulate adhesive binder and (2) functional particles distributed within said matrix and attached thereto by means of said particulate adhesive binder.
Claim 3
Dependent Claim
13 words
A nonwoven material according to claim 1 wherein said matrix comprises polyester fibers.
Claim 4
Dependent Claim
17 words
A nonwoven material according to claim 2 wherein said particulate adhesive binder is a polyester bonding powder.
Claim 5
Dependent Claim
15 words
A nonwoven material according to claim 3 wherein said functional particles comprise a liquid-absorbent polymer.
Claim 6
Dependent Claim
25 words
A nonwoven material according to claim 4 wherein said liquid-absorbent polymer is a starch graft copolymer, a cross-linked carboxymethyl cellulose derivative or a modified polyacrylate.
Claim 7
Dependent Claim
15 words
A nonwoven material according to claim 4 wherein said liquid-absorbent polymer is a superabsorbent polymer.
Claim 8
Dependent Claim
18 words
A nonwoven material according to claim 6 wherein said superabsorbent polymer is an acrylic or methacrylic acid-containing polymer.
Claim 9
Dependent Claim
25 words
A nonwoven material according to any one of claims 1-7, inclusive, which also contains, in contiguous interfacing relationship with said matrix, a nonloftable nonwoven material.
Claim 10
Dependent Claim
18 words
A nonwoven material according to claim 8 wherein said functional particles are distributed substantially evenly throughout said matrix.
Claim 11
Dependent Claim
18 words
A nonwoven material according to claim 8 having a differential distribution of said functional particles within said matrix.
Claim 12
Dependent Claim
46 words
A nonwoven material according to claim 10 wherein the concentration of said functional particles is at its lowest at the surface of said matrix adjacent the interface with said nonloftable nonwoven material and at its greatest adjacent the surface of said matrix remote from said interface.
Claim 13
Dependent Claim
38 words
A disposable absorbent product comprising a nonwoven material according to claim 1 in the form of a baby's diaper, an incontinence pad for adult use, a sanitary napkin or tampon, a bandage, a medical dressing or a wipe.
References Cited (Backward Citations)
US2880113A
Cited
US2880112A
Cited
US3561447A
Cited
US3804092A
Cited
US4356229A
Cited
US4332253A
Cited
US4377615A
Cited
US4573989A
Cited
US4610915A
Cited
US4652484A
Cited
US4559050A
Cited
GB2175024A
Cited
EP0202472A1
Cited
GB2175025A
Cited
EP0205242A2
Cited
US4704112A
Cited
EP0269380A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |