Method for obtaining uniform porosity in printed inherently porous cigarette tipping papers
AssigneeOlin Corporation
InventorsStuart Wayne McCarty, Clarence Morris O'Shields
Life of this patent
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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.
Claims6
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.
Dependencies are inferred from the claim text.