Disposable diaper having reduced absorbent core to backsheet gluing
AssigneeThe Procter & Gamble Company
InventorsMatthias Konrad Hippe, Bruno Johannes Ehrnsperger, Egon Loeffler, Ernesto G. Bianchi, Carsten Heinrich Kreuzer, Blanca Arizti
Life of this patent
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Abstract
The present disclosure generally relates to disposable diapers having absorbent cores comprising superabsorbent polymer particles which are immobilized by adhesive. The absorbent cores are attached to the backsheets of the disposable diapers in certain attachment zones to reduce see-through and the formation of tension lines on the backsheets.
Claims24
A disposable diaper comprising a backsheet, a topsheet and therein between an absorbent core, the absorbent core having a longitudinal direction with a longitudinal axis and perpendicular thereto a lateral direction with a transverse axis, the absorbent core comprising a front region, a back region and a crotch region therein between and a front lateral edge, an opposing back lateral edge, and longitudinally extending side edges, wherein the absorbent core comprises superabsorbent polymer particles and wherein the absorbent core comprises less than 5% of airfelt, and wherein
- a) the absorbent core is attached to the backsheet of the disposable diaper in attachment zones adjacent to the front lateral edge and the back lateral edge of the absorbent core;
- and
- b) the absorbent core is attached to the backsheet of the disposable diaper in the crotch region of the absorbent core in attachment zones adjacent to the longitudinal side edges of the absorbent core, wherein the attachment zones adjacent to the longitudinal sides edges extend less than 15% inwardly from the longitudinal side edges;
- c) wherein the absorbent core is unattached to the backsheet in any other region besides those defined in a) and b).
A disposable diaper comprising a backsheet, a topsheet and therein between an absorbent core, the absorbent core having a longitudinal direction with a longitudinal axis and perpendicular thereto a lateral direction with a transverse axis, the absorbent core comprising a front region, a back region and a crotch region therein between and a front lateral edge, an opposing back lateral edge, and longitudinally extending side edges, wherein the absorbent core comprises superabsorbent polymer particles and wherein the absorbent core comprises less than 5% of airfelt, and wherein
- a) the absorbent core is attached to the backsheet of the disposable diaper in attachment zones adjacent to the front lateral edge and the back lateral edge of the absorbent core;
- and
- b) the absorbent core is attached to the backsheet of the disposable diaper in the crotch region of the absorbent core in attachment zones adjacent to the longitudinal side edges of the absorbent core, wherein the attachment zones adjacent to the longitudinal side edges extend less than 15% inwardly from the longitudinal side edges;
- and
- c) the absorbent core is attached to the backsheet of the disposable diaper in the crotch region of the absorbent core through a wetness indicator;
- d) wherein the absorbent core is unattached to the backsheet in any other region besides those defined in a), b), and c).
A disposable diaper comprising a backsheet, a topsheet and therein between an absorbent core, the absorbent core having a longitudinal direction with a longitudinal axis and perpendicular thereto a lateral direction with a transverse axis, the absorbent core comprising a front region, a back region and a crotch region therein between and a front lateral edge, an opposing back lateral edge, and longitudinally extending side edges, wherein the absorbent core comprises superabsorbent polymer particles and wherein the absorbent core comprises less than 5% of airfelt;
- wherein the absorbent core is attached to the backsheet in one or more attachment zones that cover only from 0.2% to 3% of the total surface area of the absorbent core;
- and wherein the absorbent core comprises one or more channels which are free of the superabsorbent polymer particles.
Dependencies are inferred from the claim text.