US2732319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating paper with thermoplastic
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:29
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
THE METHOD OF COATING PAPER COMPRISING THE STEPS OF APPLYING A COATING OF MELTED THERMOPLASTIC COATING MATERIAL AT A TEMPERATURE BETWEEN 180* AND 250* F. TO AT LEAST ONE SIDE OF A TRAVELING WEB OF PAPER, PASSING THE TRAVELING WEB WITH THE COATING THEREON INTO A COATING CHILLING WATER BATH WITH THE WEB TRAVELING DOWNWARDLY IN A SUBSTANTIALLY VERTICAL PLANE AS IT ENTERS THE WATER OF THE BATH, THE TEMPERATURE OF THE WATER OF THE BATH BEING OF THE ORDER OF 32* TO 46* F. AND IMPINING DOWNWARDLY DIRECTED SHEETS OF WATER OF A TEMPERATURE APPROXIMATELY THAT OF THE WATER BATH UPON THE OPPOSITE SIDE OF THE WEB IN ADVANCE OF BUT ADJACENT THE POINT OF ENTRANCE OF THE WEB INTO THE WATER, THE SHEETS OF WATER WHEN IMPINGING THE WEB HAVING A SPEED IN THE DIRECTION OF TRAVEL OF THE WEB LESS THAN BUT AT LEAST APPROXIMATELY ONE-THIRD THE SPEED OF TRAVEL OF THE WEB, THE WATER SO DISCHARGED UPON THE WEB REMAINING THEREON IN THE FORM OF FILMS AT THE POINT OF THE WEB''S ENTRANCE INTO THE WATER OF THE CHILLING BATH.
Claim 2
Independent Claim
184 words
THE METHOD OF COATING PAPER COMPRISING THE STEPS OF APPLYING A COATING OF MELTED THERMOPLASTIC COATING MATERIAL AT A TEMPERATURE BETWEEN 180* AND 250* F. TO AT LEAST ONE SIDE OF A TRAVELING WEB OF PAPER, PASSING THE TRAVELING WEB WITH THE COATING THEREON INTO A COATING CHILLING WATER BATH WITH THE WEB TRAVELING DOWNWARDLY IN A SUBSTANTIALLY VERTICAL PLANE AS IT ENTERS THE WATER OF THE BATH, THE TEMPERATURE OF THE WATER OF THE BATH BEING OF THE ORDER OF 32* TO 46* F. AND IMPINING DOWNWARDLY DIRECTED SHEETS OF WATER OF A TEMPERATURE APPROXIMATELY THAT OF THE WATER BATH UPON THE OPPOSITE SIDE OF THE WEB IN ADVANCE OF BUT ADJACENT THE POINT OF ENTRANCE OF THE WEB INTO THE WATER, THE SHEETS OF WATER WHEN IMPINGING THE WEB HAVING A SPEED IN THE DIRECTION OF TRAVEL OF THE WEB LESS THAN BUT AT LEAST APPROXIMATELY ONE-THIRD THE SPEED OF TRAVEL OF THE WEB, THE WATER SO DISCHARGED UPON THE WEB REMAINING THEREON IN THE FORM OF FILMS AT THE POINT OF THE WEB''S ENTRANCE INTO THE WATER OF THE CHILLING BATH.
References Cited (Backward Citations)
US2166249A
Cited
US2545006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |