ABSORBENT LAMINATE INCLUDING A SPUNLACE NONWOVEN LAYER, ABSORBENT CORES WITH SUCH LAMINATES, AND ABSORBENT ARTICLES WITH SUCH ABSORBENT CORES
Absorbent laminates and folded multi-layer absorbent cores including one or more of the present absorbent laminates The present absorbent laminates comprise an absorbent layer between two laminate layers, at least one of which absorbent laminates including a spunlace nonwoven. Some of the present multi-layer absorbent cores are folded to define a channel running longitudinally along the core to enhance liquid distribution and absorption.
1 . An absorbent core comprising:
an absorbent laminate that comprises:
a first laminate layer comprising a tissue or nonwoven;
a second laminate layer comprising a spunlace nonwoven; and
an absorbent layer positioned between the first and second laminate layers, the absorbent layer comprising adhesive and greater than about 90 percent by weight super absorbent polymer (SAP);
where at least one of the first and second laminate layers comprises a through-air dried (TAD) tissue;
where lateral portions of the absorbent laminate are folded inward toward a central longitudinal axis of the absorbent laminate such that multiple layers of absorbent laminate define a longitudinally folded absorbent core.
2 . The absorbent core of claim 1 , where the absorbent layer is a first absorbent layer, and the absorbent laminate further comprises:
a third laminate layer comprising a spunlace nonwoven and disposed on an opposite side of the second laminate layer relative to the first laminate layer; and
a second absorbent layer disposed between the second and third laminate layers, the second absorbent layer comprising adhesive and greater than about 90 percent by weight super absorbent polymer.
3 . The absorbent core of claim 2 , where the third laminate layer defines an outermost surface of the longitudinally folded absorbent core.
4 . The absorbent core of claim 2 , where the longitudinally folded absorbent core defines a longitudinal channel.
5 . The absorbent core of claim 4 , where the channel has a width of from 10 mm to 30 mm.
6 . The absorbent core of claim 1 , where the first laminate layer comprises tissue.
7 . The absorbent core of claim 1 , where the absorbent layer(s) each comprises from 40 grams per square meter (gsm) to 80 gsm of the SAP.
8 . The absorbent core of claim 7 , wherein the total SAP content of all layers of the longitudinally folded absorbent core is from 200 gsm to 600 gsm.
9 . The absorbent core of claim 7 , where a basis weight of the second laminate layer is greater than a basis weight of the third laminate layer.
10 . The absorbent core of claim 1 , where the longitudinally folded absorbent core has three or more layers of the absorbent laminate.
11 . The absorbent core of claim 1 , where the absorbent laminate has been mechanically softened by calendaring or temporary corrugating.
12 . The absorbent core of claim 1 , where the folding of the lateral portions of the laminate define folded lateral edges of the absorbent core, and the absorbent core defines a plurality of slits through at least one layer of the laminate, the slits extending from the lateral edges toward the central longitudinal axis.
13 . The absorbent core of claim 1 , where the longitudinally folded absorbent core has a plurality of sheets of the absorbent laminate.
14 . The absorbent core of claim 1 , where the absorbent core comprises a surge core and a base core, and at least one of the surge and base cores is defined by the longitudinally folded absorbent laminate.
15 . The absorbent core of claim 1 , wherein the less than 3 percent of the weight of the SAP comes from particles that will not pass through a 500 μm screen.
16 . A disposable absorbent article comprising:
a body-facing topsheet;
a backsheet; and
an absorbent core of claim 1 .
17 . The disposable absorbent article of claim 16 , further comprising:
an acquisition distribution layer (ADL) positioned between the topsheet and the absorbent core;
where a width of the ADL at least 80% of a width of the longitudinally folded absorbent core.