Patent US4446498A successfully refreshed from Google Patents.
Patent US3916063A successfully refreshed from Google Patents.
US3916063A
Expired / Lapsed
US
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Method for manufacturing a printable, glueable polyolefin web material
Assignee: Thilmany Pulp and Paper Co
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Filing: 1973-10-11
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Granted: 1975-10-28
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Expires: 1993-10-11
Abstract
Abstract A method for manufacturing a polyolefin web having a lightweight, adherent, printable, glueable overcoat provided through the application and subsequent drying and curing of an aqueous coating solution of a stabilized amino-formaldehyde polyvinyl alcohol polymer composition and catalyst therefore.
Inventors
- 👤 Richard A Dratz
- 👤 Ralph A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:52
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; B05D7/04; B41; B41M; B41M1/00; B41M1/26; B41M1/30; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; B05D3/00; B05D3/04; B05D3/0406; B05D3/0413; B05D5/00; B05D5/04; C08J2323/00; C08J2323/02; C08J2429/00; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31862; Y10T428/3187; Y10T428/31873; Y10T428/31909; Y10T428/31913; Y10T428/31942
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
168 words
A METHOD FOR MANUFACTURING A POLYOLEFIN FILM HAVING AN ADHERENT, LIGHWEIGHT, PRINTABLE, GLUEABLE OVERCOAT, COMPRISING THE STEPS OF PROVIDING A POLYOLEFIN FILM, PROVIDING AN AQUEOUS COATING SOLUTION OF A STABILIZED AMINO-FORMALDEHYDE POLYVINYL ALCOHOL POLYMER COMPOSITION AND AN ACID CATALYST FOR THE COMPOSITION, SAID COATING SOLUTION CONTAINING BETWEEN ABOUT 5 AND ABOUT 30 PERCENT BY WEIGHT TOTAL SOLIDS, UNIFORMLY COATING AT LEAST ONE SURFACE OF THE POLYOLEFIN FILM WITH SAID COATING SOLUTION IN AN AMOUNT TO PROVIDE A PREDETERMINED FINISHED COATING LEVEL ON A SOLID BASIS OF FROM ABOUT 0.1 TO ABOUT 1.5 POUNDS PER REAM OF THE POLYOLEFIN FILM PER COATED SURFACE OF THE FILM, AND PROGRESSIVELY PASSING THE COATED FILM THROUGH A HEATINGAND DRYING ZONE WHICH IS A FORCED AIR DRYER HAVING A DRYING AIR TEMPERATURE OF BETWEEN ABOUT 380*F AND ABOUT 425*F., TO DRY THE WATERFROM AND CURE THE SOLUTION COATING TO PROVIDE A POLYOLEFIN FILM HAVING AN ADHERENT, LIGHTWEIGHT, PRINTABLE AND GLUEABLE OVERCOATING HAVING A VISKING READING OF BETWEEN ABOUT 46 AND ABOUT 52 DYNES/CM2.
Claim 2
Independent Claim
168 words
A METHOD FOR MANUFACTURING A POLYOLEFIN FILM HAVING AN ADHERENT, LIGHWEIGHT, PRINTABLE, GLUEABLE OVERCOAT, COMPRISING THE STEPS OF PROVIDING A POLYOLEFIN FILM, PROVIDING AN AQUEOUS COATING SOLUTION OF A STABILIZED AMINO-FORMALDEHYDE POLYVINYL ALCOHOL POLYMER COMPOSITION AND AN ACID CATALYST FOR THE COMPOSITION, SAID COATING SOLUTION CONTAINING BETWEEN ABOUT 5 AND ABOUT 30 PERCENT BY WEIGHT TOTAL SOLIDS, UNIFORMLY COATING AT LEAST ONE SURFACE OF THE POLYOLEFIN FILM WITH SAID COATING SOLUTION IN AN AMOUNT TO PROVIDE A PREDETERMINED FINISHED COATING LEVEL ON A SOLID BASIS OF FROM ABOUT 0.1 TO ABOUT 1.5 POUNDS PER REAM OF THE POLYOLEFIN FILM PER COATED SURFACE OF THE FILM, AND PROGRESSIVELY PASSING THE COATED FILM THROUGH A HEATINGAND DRYING ZONE WHICH IS A FORCED AIR DRYER HAVING A DRYING AIR TEMPERATURE OF BETWEEN ABOUT 380*F AND ABOUT 425*F., TO DRY THE WATERFROM AND CURE THE SOLUTION COATING TO PROVIDE A POLYOLEFIN FILM HAVING AN ADHERENT, LIGHTWEIGHT, PRINTABLE AND GLUEABLE OVERCOATING HAVING A VISKING READING OF BETWEEN ABOUT 46 AND ABOUT 52 DYNES/CM2.
Claim 3
Dependent Claim
72 words
A method in accordance with claim 1 wherein said coated film is progressively passed through said heating and drying zone at a lineal speed of about 400 feet per minute or more, wherein the coating solution is applied to one side of the polyolefin film and wherein the finished coating is applied at a level of about 0.3 to about 0.8 pounds per ream, on a dry basis, of the polyolefin film.
Claim 4
Dependent Claim
23 words
A method in accordance with claim 2 wherein said coating solution contains between about 10 and about 20 percent by weight total solids.
Claim 5
Dependent Claim
23 words
A method in accordance with claim 1 wherein said polyolefin film is subjected to corona treatment prior to coating thereon of said solution.
Claim 6
Dependent Claim
58 words
A printable, glueable, overcoated polyolefin film comprising a polyolefin film and an adherent, continuous coating thereon of a cured insolubilized amino-aldehyde polyvinyl alcohol composition having a Visking reading of between about 46 and about 52 dynes/cm2, said coating being present at a level of between about 0.1 and about 1.5 pounds per ream per surface of said film.
Claim 7
Dependent Claim
58 words
A printable, glueable, overcoated polyolefin film comprising a polyolefin film and an adherent, continuous coating thereon of a cured insolubilized amino-aldehyde polyvinyl alcohol composition having a Visking reading of between about 46 and about 52 dynes/cm2, said coating being present at a level of between about 0.1 and about 1.5 pounds per ream per surface of said film.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |