Patent US3772124A successfully refreshed from Google Patents.
US3772124A
Expired / Lapsed
US
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Method of forming tissue laminate
Assignee: Johnson and Johnson
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Filing: 1972-03-16
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Granted: 1973-11-13
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Expires: 1992-03-16
Abstract
Abstract An impregnated paper product having strength, toughness, tear resistance, softness, hand and breathability sufficient to permit such papers to be used as substitutes for woven or non-woven fabrics in making disposable fabric products. By applying conventionally known strength imparting resins, polymers, and copolymers to multi-ply, dry creped tissue papers of low basis weight, which multi-ply laminate has the crepe removed therefrom as a result of passing through an aqueous suspension or emulsion of such resins, polymers or co-polymers, the stiffness, noisiness and loss of breathability that result from such impregnation of single ply creped or uncreped papers does not occur.
Inventors
- 👤 W Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; B32B29/005; B32B38/00; B32B38/08; D; D21; D21H; D21H25/00; D21H25/04; D21H25/06; D21H27/00; D21H27/30; D21H27/40; B32B2250/00; B32B2250/26; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2432/00; B32B2437/00; B32B2437/04; B32B2601/00; D21H17/00; D21H17/03; D21H17/05; D21H17/06; D21H21/00; D21H21/14; D21H21/18; D21H23/00; D21H23/02; D21H23/22; D21H23/32; D21H23/42; D21H23/52; D21H23/56; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31909
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
The method according to claim 1 wherein said aqueous suspension or emulsion contains from about 5 percent to about 50 percent polymeric resin solids.
Claim 2
Dependent Claim
51 words
The method according to claim 1 wherein said superimposed plies are passed through said suspension or emulsion at a rate of speed sufficient to obtain a wet pick-up of the suspension or emulsion ranging from about 75 percent to about 250 percent based upon the combined weight of the superimposed plies.
Claim 3
Dependent Claim
77 words
The method according to claim 1 wherein each of said superimposed plies of dry creped tissue has a basis weight ranging from about 5 pounds up to 30 pounds, a crepe-based stretch level in the machine direction ranging from about 5 percent to about 50 percent and an inter-fiber stretch level in the cross direction ranging from about 2.3 percent to about 6 percent prior to impregnation with said polymeric resin and removal of the crepe therefrom.
Claim 4
Dependent Claim
19 words
The method according to claim 2 wherein said aqueous suspension or emulsion contains about 15 percent polymeric resin solids.
Claim 5
Dependent Claim
46 words
The method according to claim 3 wherein said superimposed plies are passed through said suspension or emulsion at a rate of speed sufficient to obtain a wet pick-up of the suspension or emulsion of about 150 percent based upon the combined weight of the superimposed plies.
Claim 6
Dependent Claim
62 words
The method according to claim 4 wherein each of said superimposed plies of dry creped tissue has a basis weight of about 10 pounds, a crepe-based stretch level in the machine direction of about 15 percent and an inter-fiber stretch level in the cross direction of about 4.5 percent prior to impregnation with said polymeric resin and removal of the crepe therefrom.
References Cited (Backward Citations)
US3300368A
Cited
US3684643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |