US4112154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for obtaining uniform porosity in printed inherently porous cigarette tipping papers
Assignee: Magnera Corp
•
Filing: 1977-09-02
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Granted: 1978-09-05
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Expires: 1997-09-02
Abstract
Abstract A method for obtaining uniform porosity in printed inherently porous cigarette tipping papers from base papers of differing relative porosities, comprising measuring the porosity of the base paper and adjusting the viscosity of the ink used to print the base paper relative to the porosity of the base paper. The viscosity of the ink is progressively increased or decreased relative to decreases or increases respectively in the porosity of the base paper to arrive at a predetermined uniform final porosity in the printed paper.
Inventors
- 👤 Stuart Wayne McCarty
- 👤 Clarence Morris O'Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:28
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/26; B41M1/36; A; A24; A24C; A24C5/00; A24C5/56; A24C5/565; A24D; A24D1/00; A24D1/02; B41M1/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A method for obtaining uniform porosity in inherently porous cigarette tipping papers from base papers of differing relative porosities, comprising measuring the porosity of the base paper, coating the base paper with a liquid solution whose viscosity is adjusted according to the porosity of the base paper, said liquid solution selected from the group consisting of printing inks, coating suspensions, paper sizes, cellulose ethers and carboxymethylcellulose, said viscosity adjusted relatively higher for low porosity paper and relatively lower for high porosity paper, whereby the porosity is controlled to achieve a predetermined final uniform porosity in the area in which the coating is applied to the tipping paper.
Claim 2
Independent Claim
107 words
A method for obtaining uniform porosity in inherently porous cigarette tipping papers from base papers of differing relative porosities, comprising measuring the porosity of the base paper, coating the base paper with a liquid solution whose viscosity is adjusted according to the porosity of the base paper, said liquid solution selected from the group consisting of printing inks, coating suspensions, paper sizes, cellulose ethers and carboxymethylcellulose, said viscosity adjusted relatively higher for low porosity paper and relatively lower for high porosity paper, whereby the porosity is controlled to achieve a predetermined final uniform porosity in the area in which the coating is applied to the tipping paper.
Claim 3
Dependent Claim
13 words
The method of claim 1 in which the liquid solution is printing ink.
Claim 4
Dependent Claim
20 words
The method of claim 1 in which the liquid solution is applied evenly over the entire surface of the paper.
Claim 5
Dependent Claim
22 words
The method of claim 1 in which the liquid solution is applied evenly over random areas on one surface of the paper.
Claim 6
Dependent Claim
26 words
The method of claim 1 in which the porosity of the base paper is within the range of from 700 to 1800 Filtrona air permeability units.
Claim 7
Dependent Claim
24 words
The method of claim 1 in which the viscosity of the liquid solution is within the range of from 8 to 11 seconds Zahn.
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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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |