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Patents

Absorbent Article with Graphics Printed in Preservative-Free Ink, and Methods of Manufacture Thereof

U.S. Patent No. 11,185,452

Author Image

By: Tara Olivo

Associate Editor at Nonwovens Industry, Rodman Media

Clarissa Maldonado, Cincinnati, OH; Douglas E. Bugner, Rochester, NY; Wayne Cook, Xenia, OH; and Allan Sowinski, Rochester, NY.
Assigned to Procter & Gamble, Cincinnati, OH.

Filed: 10/26/18
Issued: 11/30/21

An absorbent article product comprising a wearer-facing, liquid-permeable topsheet; an outward-facing, liquid impermeable backsheet; and an absorbent core structure disposed between the topsheet and backsheet, the topsheet, backsheet and absorbent core structure of each of the topsheet, backsheet and absorbent core structure comprising a layer formed one or more of a nonwoven web material, a fibrous batt, a layer of absorbent foam material and a polymeric film material, wherein one or more surfaces of the product bears a printed graphic element, the printed graphic element being printed using an aqueous inkjet ink composition having a dynamic viscosity of less than or equal to 5 centipoise (5 mPa-sec) at 25° C., and consisting essentially of: (a) one or more polymer-dispersed pigment colorants in a total amount of at least 0.9 weight % and up to and including 6 weight %, based on the total weight of the aqueous inkjet ink composition; (b) a composition consisting of one or more compounds represented by the following Structure I: HO—CH2—CH2—R (I) wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, in a total amount of at least 0.5 weight % and up to and including 2 weight %, based on the total weight of the aqueous inkjet ink composition; (c) one or more compounds selected from water-soluble humectants, co-solvents, and both water-soluble humectants and co-solvents, in an amount of less than or equal to 20 weight %, based on the total weight of the aqueous inkjet composition, wherein each of the one or more polymer-dispersed pigment colorants has a 50th percentile particle diameter of less than or equal to 70 nm and a 95th percentile particle diameter of less than or equal to 150 nm, all particle diameters being measured using a dynamic light scattering particle size analyzer.

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