Stretch laminate, method of making, and absorbent article
A stretch laminate includes a first layer including an elastomer film, the first layer having a surface, and a second layer including a nonwoven material, the second layer having a surface that is attached to the surface of the first layer. The tensile behavior in the transverse direction of the stretch laminate is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5, and exists independent of mechanical activation. A method of making the stretch laminate and an absorbent article having at least one region defined by the stretch laminate are also provided.
1. A stretch laminate comprising:
a first layer comprising a skinless elastomer film, the first layer having a surface; and
a second layer comprising a nonwoven material, the second layer having a surface that is attached to the surface of the first layer,
the tensile behavior in the transverse direction of the stretch laminate is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5, and exists independent of mechanical activation.
2. The stretch laminate according to claim 1 , wherein the tensile behavior in the transverse direction of the stretch laminate is within about 1 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5.
3. The stretch laminate according to claim 1 , wherein the laminate has an energy recovery value of 0.1 or higher for engineering strains between about 0.5 to about 2.5.
4. The stretch laminate according to claim 1 , wherein the film has an energy recovery value of 0.1 or higher for engineering strains between about 1.5 and about 2.5.
5. The stretch laminate according to claim 1 , comprising a third layer comprising a nonwoven material, the third layer having a surface that is attached to the first layer on a surface opposite the second layer.
6. The stretch laminate according to claim 5 , comprising adhesive disposed between the first layer and the second layer, and disposed between the first layer and the third layer.
7. A method of making a stretch laminate, the method consisting essentially of:
providing a skinless elastomer film; and
attaching a nonwoven layer to the skinless elastomer film,
the tensile behavior in the transverse direction of the stretch laminate so made is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5, and exists independent of mechanical activation.
8. The method according to claim 7 , wherein the tensile behavior in the transverse direction of the stretch laminate is within about 1 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5.
9. The method according to claim 7 , wherein the laminate has an energy recovery value of between 0.1 or greater for engineering strains between about 0.5 to about 2.5.
10. The method according to claim 7 , wherein the film has an energy recovery value of 0.1 or greater for engineering strains between about 1.5 and about 2.5.
11. An absorbent article having a waist region and a crotch region, the article comprising:
a backsheet having a longitudinal axis;
a topsheet attached to the backsheet and having a body-facing surface;
an absorbent core disposed between the backsheet and the topsheet; and
a stretch laminate defining at least one region of the absorbent article, the stretch laminate comprising:
a first layer comprising a skinless elastomer film, the first layer having a surface; and
a second layer comprising a nonwoven material, the second layer having a surface that is attached to the surface of the first layer,
the tensile behavior in the transverse direction of the stretch laminate is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5, and exists independent of mechanical activation.
12. The absorbent article according to claim 11 , wherein the tensile behavior in the transverse direction of the stretch laminate is within about 1 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5.
13. The absorbent article according to claim 11 , wherein the stretch laminate has an energy recovery value of 0.1 or higher for engineering strains between about 0.5 to about 2.5.
14. The absorbent article according to claim 11 , wherein the elastomer film has an energy recovery value of 0.1 or higher for engineering strains between about 1.5 and about 2.5.
15. The absorbent article according to claim 11 , further comprising a third layer comprising a nonwoven material, the third layer having a surface that is attached to the first layer on a surface opposite the second layer.
16. The absorbent article according to claim 15 , comprising adhesive disposed between the first layer and the second layer, and disposed between the first layer and the third layer.
17. The absorbent article according to claim 11 , wherein the at least one region comprises a waist region, and the stretch laminate is attached to the backsheet.
18. The absorbent article according to claim 11 , wherein the at least one region comprises a side flap, and the stretch laminate is attached to the backsheet.
19. The absorbent article according to claim 18 , wherein a fastener is attached to the side flap.