Patent ID: 9713556
Date: 2017-07-25
CPC Classifications: A61F

Claim:
1. An absorbent core, wherein the absorbent core comprises a core wrap enclosing an absorbent material, wherein the absorbent material comprises at least 80% of superabsorbent polymers by weight of the absorbent material; the absorbent core comprising a front edge, a back edge, two longitudinal edges, a front region, a back region and a crotch region, the absorbent core having a longitudinal axis oriented in a longitudinal direction, and a length (L) as measured between the front edge and back edge along the longitudinal axis which is at least 320 mm; the absorbent core further comprising: a first absorbent layer and a second absorbent layer, wherein the first absorbent layer comprises a first substrate and a first layer of superabsorbent polymers, wherein the second absorbent layer comprises a second substrate and a second layer of superabsorbent polymers, wherein the absorbent core comprises a fibrous thermoplastic adhesive material positioned between the first absorbent layer and the second absorbent layer, wherein the fibrous thermoplastic adhesive material at least partially contributes to bonding each layer of the superabsorbent polymers to its respective substrate, and wherein the first substrate and the second substrate form the core wrap; and at least a pair of channels symmetrically disposed relative to the longitudinal axis of the core, wherein neither channel coincides with the longitudinal axis and wherein the channels have a length projected on the longitudinal axis of the core which is at least 10% of the length L of the absorbent core, wherein the channels are substantially free of the absorbent material, wherein the width of a portion of the channels is at least about 2 mm, and wherein the channels are formed by bonding the first substrate directly to the second substrate; wherein the channels are present at least at the same longitudinal level as a crotch point, C, wherein the crotch point is the point placed at a distance of 45% of the length L from the front edge of the absorbent core, and wherein the channels extend from the crotch region into the back region; wherein the absorbent core has a Relative Wet Caliper Increase (RWCI) after compression of less than 10.0%; and wherein the core wrap is at least partially sealed along the edges of the core.