US3753826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making nonwoven textile fabrics
Assignee: Johnson and Johnson
•
Filing: 1971-03-17
•
Granted: 1973-08-21
•
Expires: 1991-03-17
Abstract
Abstract A nonwoven textile fabric having excellent softness, drape, and hand, good long and cross tensile strength, good wet abrasion resistance and good washability, and good absorptive capacity and opacity comprising: a relatively flat, sheet-like fibrous structure of from about 30 percent by weight to about 90 percent by weight of overlapping and intersecting structural fibers having an average length of from about 1/4 inch to about 1 1/4 inches or more, and from about 70 percent by weight to about 10 percent by weight of relatively short fibers having an average length of from about 1/6 inch to about 1/25 inch or less; said structural fibers being bonded together by a closely-spaced, nonmigrating, intermittent print pattern of discrete synthetic resin binder areas, and said relatively short fibers being bonded together by a substantially uniform, overall application of a relatively soft, synthetic resin binder in an amount of from about 2 percent by weight to about 10 percent by weight, based on the total weight of the finished nonwoven textile fabric. Methods of making such nonwoven textile fabrics, and particularly methods involving the use of wet-forming manufacturing techniques, are also included.
Inventors
- 👤 C Plummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:05
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/04; D21H25/06; D21H15/00; D21H15/02; D21H15/06; D21H23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24893; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/298; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2713; Y10T442/2721
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
22 words
forming a relatively flat, sheet-like fibrous structure of such structural fibers and relatively short fibers and discrete particles of resin binder solids;
Claim 2
Independent Claim
35 words
A method of making a nonwoven textile fabric having excellent softness, drape, and hand, good long and cross tensile strength, good wet abrasion resistance and good washability, and good absorptive capacity and opacity which comprises:
Claim 3
Dependent Claim
20 words
drying said fibrous structure at elevated temperatures whereby said discrete particles of resin binder solids prebond said fibers in position;
Claim 4
Dependent Claim
29 words
applying a bonding agent to said dried, prebonded fibrous structure and particularly the structural fibers therein in a closely-spaced, non-migrating, intermittent print pattern of discrete synthetic resin binder areas;
Claim 5
Dependent Claim
22 words
drying said fibrous structure at elevated temperatures whereby said discrete particles of heat activatable resin binder solids prebond said fibers in position;
Claim 6
Dependent Claim
37 words
A method as defined in claim 1 wherein the concentration of the fibers in the aqueous slurry ranges from about 1/20 percent by weight to about 1 1/2 percent by weight, on a dry fiber weight basis.
Claim 7
Dependent Claim
28 words
applying a bonding agent to said dried, prebonded fibrous structure and particularly the structural fibers therein in a closely-spaced, intermittent print pattern of discrete synthetic resin binder areas;
Claim 8
Dependent Claim
21 words
drying said fibrous structure at elevated temperatures whereby said bonding agent bonds said fibrous structure in said closely-spaced, intermittent print pattern;
Claim 9
Dependent Claim
30 words
A method as defined in claim 1 wherein the concentration of the fibers in the aqueous slurry ranges from about 1/10 percent by weight to about 1 percent by weight.
Claim 10
Dependent Claim
60 words
applying a bonding agent to said dried, intermittently bonded fibrous structure and particularly the relatively short fibers therein in a substantially uniform overall application of a relatively soft, synthetic resin binder in an amount equal to from about 2 percent by weight to about 10 percent by weight, based on the total weight of the finished nonwoven textile fabric; and
Claim 11
Dependent Claim
21 words
drying said fibrous structure at elevated temperatures whereby said bonding agent bonds said fibrous structure in said closely-spaced, intermittent print pattern;
Claim 12
Dependent Claim
29 words
A method as defined in claim 1 wherein the concentration of the discrete particles of resin binder solids ranges from about 15 percent to about 40 percent by weight.
Claim 13
Dependent Claim
33 words
A method as defined in claim 1 wherein a resin deposition aid is included in the aqueous slurry to promote the deposition and adherence of the particulate resin solids to the individual fibers.
Claim 14
Dependent Claim
20 words
drying said fibrous structure at elevated temperatures whereby said relatively soft resin binder bonds said fibrous structure in overall fashion.
Claim 15
Dependent Claim
60 words
applying a bonding agent to said dried, intermittently bonded fibrous structure and particularly the relatively short fibers therein in a substantially uniform overall application of a relatively soft, synthetic resin binder in an amount equal to from about 2 percent by weight to about 10 percent by weight, based on the total weight of the finished nonwoven textile fabric; and
Claim 16
Dependent Claim
20 words
drying said fibrous structure at elevated temperatures whereby said relatively soft resin binder bonds said fibrous structure in overall fashion.
Claim 17
Dependent Claim
44 words
A method as defined in claim 6 wherein the concentration of the resin deposition aid in the aqueous slurry ranges from about 1/2 percent by weight to about 1 1/2 percent by weight, based on the total dry resin solids in the aqueous slurry.
Claim 18
Dependent Claim
23 words
A method as defined in claim 2 wherein the structural fibers are rayon fibers and the relatively short fibers are wood pulp fibers.
Claim 19
Dependent Claim
30 words
A method as defined in claim 2 wherein the structural fibers comprise a mixture of rayon fibers and polyamide nylon fibers and the relatively short fibers are wood pulp fibers.
Claim 20
Dependent Claim
21 words
A method as defined in claim 2 wherein the relatively flat, sheet-like fibrous structure is formed on a moving forming surface.
References Cited (Backward Citations)
US2697678A
Cited
US2782130A
Cited
US3057772A
Cited
US3009822A
Cited
US3214323A
Cited
US3395201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |