Extrusion bonded laminates for absorbent articles

摘要

Absorbent articles in which the outer cover has an extrusion bonded laminate.

主权项

1. An absorbent article comprising:
a topsheet; an outer cover; an absorbent core disposed between the topsheet and outer cover; wherein the outer cover comprises an extrusion bonded laminate, the extrusion bonded laminate comprising:
a multi-layer coextruded elastomeric film, comprising a core layer, a first outer layer, and a second outer layer, wherein the core layer is between the first and second outer layers;
a nonwoven consisting of fibers and/or filaments;wherein the first outer layer is non-adhesively joined to the nonwoven via extrusion coating, such that the first outer layer is a tie layer between the core layer and the nonwoven;wherein the second outer layer is non-adhesively joined to the core layer, such that the second outer layer is a skin layer;wherein the first and second outer layers comprise polyolefin elastomers (POEs);wherein the first and second outer layers comprise a blend of two ethylene rich copolymers, wherein ethylene is between 10% and 97%;wherein the extrusion bonded laminate is mechanically activated using intermeshing gears;wherein the outer cover is elastic at 50% engineering strain; wherein the nonwoven has a high chemical affinity for the first outer layer; wherein the first outer layer has a low chemical affinity for the core layer; and wherein the multi-layer coextruded elastomeric film has a basis weight from 1 gsm to 25 gsm; and wherein the level of stretch of the activated laminate (% engineering strain at 1 N/cm force, as measured by the tensile test) is about 62% to about 144%.