US3207643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making water-permeable thermoplastic tissue
Assignee: Individual
•
Filing: 1964-06-01
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Granted: 1965-09-21
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Sorg Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:45
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/30; D21H27/32; D21H27/34; D21H27/36; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1052; Y10T156/1059; Y10T156/11; Y10T156/1111; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A CONTINUOUS METHOD OF PRODUCING A WATER-PERMEABLE PAPER TISSUE CAPABLE OF BEING HEAT SEALED WHICH CONPRISES CONTINUOUSLY FEEDING FILM OF A THERMOPLASTIC MATERIAL TO A KURLING ZONE, SAID FILM HAVING A THICKNESS OF ABOUT .005" TO .002", THE TEMPERATURE BEING AMBIENT, SAID THERMOPLASTIC BEING FLEXIBLE, NON-TOXIC, HAVING A LOW SOFTENING POINT AND BEING SUBSTANTIALLY FREE FROM VOLATILE SOLVENT, KURLING ONE FACE ONLY OF THE FILM WITH THE OTHER FACE BEING SMOOTH, THE KURLED AREA BEING COMPRESSED AND WEAKENED, COVERING BOTH SIDES OF SAID FILM WITH A POROUS PAPER TISSUE, THE THICKNESS OF WHICH IS A MAXIMUM OF ABOUT .011", PRESSING SAID PAPER AND FILM TOGETHER TO FORM A LAMINATE, HEATING SAID LAMINATE TO A TEMPERATURE OF ABOUT 300* TO 450*F., PULLING SAID TISSUES APART WHILE AT SAID TEMPERATURE, TO CAUSE ABOUT ONE-HALF OF SAID THERMOPLASTIC TO REMAIN ON EACH TISSUE, RUPTURING SAID COMPRESSED AREAS AND SHRINKING SAID FILM SO THAT SUBSTANTIALLY MORE THAN ONE-HALF OF THE AREA OF SAID TISSUE IS FREE FROM THERMOPLASTIC AND IS WATER-PERMEABLE.
Claim 2
Dependent Claim
167 words
A CONTINUOUS METHOD OF PRODUCING A WATER-PERMEABLE PAPER TISSUE CAPABLE OF BEING HEAT SEALED WHICH CONPRISES CONTINUOUSLY FEEDING FILM OF A THERMOPLASTIC MATERIAL TO A KURLING ZONE, SAID FILM HAVING A THICKNESS OF ABOUT .005" TO .002", THE TEMPERATURE BEING AMBIENT, SAID THERMOPLASTIC BEING FLEXIBLE, NON-TOXIC, HAVING A LOW SOFTENING POINT AND BEING SUBSTANTIALLY FREE FROM VOLATILE SOLVENT, KURLING ONE FACE ONLY OF THE FILM WITH THE OTHER FACE BEING SMOOTH, THE KURLED AREA BEING COMPRESSED AND WEAKENED, COVERING BOTH SIDES OF SAID FILM WITH A POROUS PAPER TISSUE, THE THICKNESS OF WHICH IS A MAXIMUM OF ABOUT .011", PRESSING SAID PAPER AND FILM TOGETHER TO FORM A LAMINATE, HEATING SAID LAMINATE TO A TEMPERATURE OF ABOUT 300* TO 450*F., PULLING SAID TISSUES APART WHILE AT SAID TEMPERATURE, TO CAUSE ABOUT ONE-HALF OF SAID THERMOPLASTIC TO REMAIN ON EACH TISSUE, RUPTURING SAID COMPRESSED AREAS AND SHRINKING SAID FILM SO THAT SUBSTANTIALLY MORE THAN ONE-HALF OF THE AREA OF SAID TISSUE IS FREE FROM THERMOPLASTIC AND IS WATER-PERMEABLE.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |