US3663348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A lofty and soft nonwoven, through bonded fabric
Assignee: Johnson and Johnson
•
Filing: 1968-05-16
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Granted: 1972-05-16
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Expires: 1988-05-16
Abstract
Abstract An improved lightweight fabric formed predominantly of shortlength cellulosic fibers with a minor percentage of long fibers in a substantially homogeneous non-woven web, improved products such as a diaper made therefrom and improved methods of manufacture.
Inventors
- 👤 Gerald J Liloia
- 👤 Louis F May Jr
- 👤 Norman Schiff
- 👤 Frederick K Mesek
- 👤 Robert C Shepherd
- 👤 William R Strickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:24
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/15577; A61F13/15617; A61F13/15658; A61F13/514; A61F13/51474; D; D21; D21H; D21H27/00; D21H5/00; D21H5/26; A61F13/511; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237; Y10T428/24; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T442/00; Y10T442/60; Y10T442/697; Y10T442/698
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
17 words
A nonwoven fabric of claim 1 in which said binder has a viscosity less than 5 centipoise.
Claim 2
Dependent Claim
36 words
A nonwoven fabric of claim 1 in which the long fibers are synthetic fibers of about 1.5 denier and the unbonded fabric has an elongation to separation in excess of 60 percent of its original length.
Claim 3
Dependent Claim
29 words
A nonwoven fabric of claim 1 containing long fibers in an amount within the range of about 2 and about 25 percent by weight of the total fiber content.
Claim 4
Dependent Claim
24 words
A nonwoven fabric of claim 4 wherein said long fibers are synthetic fibers, substantially all of which have lengths of at least 1 inch.
Claim 5
Dependent Claim
20 words
A nonwoven fabric of claim 5 wherein said long fibers are synthetic fibers of about 1 1/2 inches in length.
Claim 6
Dependent Claim
21 words
A nonwoven fabric of claim 4 wherein said long fibers are substantially all synthetic fibers cut to a single predetermined length.
Claim 7
Dependent Claim
28 words
A nonwoven fabric of claim 1 in which the major portion of said cellulosic short fibers has a length within the range of about one-sixteenth to one-quarter inch.
Claim 8
Dependent Claim
24 words
A nonwoven fabric of claim 8 having on at least one surface embossing in the bonded fabric whereby the drape characteristics thereof are enhanced.
Claim 9
Dependent Claim
21 words
A nonwoven fabric of claim 1 wherein the binder is applied to and dried on the fibers without substantial compression thereof.
Claim 10
Dependent Claim
26 words
A nonwoven fabric of claim 8 in which the surface fibers on one side have substantially more loft than the surface fibers on the other side.
Claim 11
Dependent Claim
43 words
A nonwoven fabric of claim 8 in which the fibers are bonded together with a cured crosslinked acrylate copolymer in an amount within the range between about 1 and about 30 percent of the weight of the fibers on a dry solids basis.
Claim 12
Dependent Claim
17 words
A wettable absorbent nonwoven fabric of claim 1 in which said bonded fabric contains a rewetting agent.
Claim 13
Dependent Claim
20 words
A nonwoven fabric of claim 1 wherein said short fibers are wood pulp and said long fibers are cut rayon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |