Absorbent articles with tear resistant film
A disposable absorbent article that includes an elastic film material. The elastic film resists the growth of a tear and include an SEEPS block copolymer having a T m of between about 10° C. and about 20° C. The film has a time-to-fail of greater than 1 hour.
1. A disposable absorbent article comprising an elastic film material that resists the growth of a tear, the elastic film material having a T m of between about 10° C. and about 20° C. and a time-to-fail of greater than 1 hour according to the Slow Tear Test.
2. The disposable absorbent article of claim 1 , wherein the film comprises an SEEPS block copolymer.
3. The disposable absorbent article of claim 1 , wherein the film has a time-to-fail of greater than 12 hours.
4. The disposable absorbent article of claim 1 , wherein the film has a time-to-fail of greater than 24 hours.
5. The disposable absorbent article of claim 1 , wherein the film has an Average Effective Thickness of from about 1 μm to about 1 mm.
6. The disposable absorbent article of claim 1 , wherein the elastic film has a High Speed Tensile Strength of between about 15 and about 22 MPa according to the High Speed Tensile Test.
7. The disposable absorbent article of claim 1 , wherein the elastic film has a High Speed Notched Tensile Strength of between about 10 and about 20 MPa according to the Notched High-Speed Tensile Strength Test.
8. The disposable absorbent article of claim 1 , wherein the elastic film is incorporated into a component of the disposable absorbent article selected from the group consisting of a topsheet, backsheet, an outer cover, a cuff, a side panel, an ear, a fastener, and combinations of these.
9. The disposable absorbent article of claim 8 , wherein the component is breathable.
10. The disposable absorbent article of claim 1 , wherein the film includes apertures.
11. The disposable absorbent article of claim 1 , wherein an SEEPS block copolymer comprises a rubbery midblock of a hydrogenated copolymer of isoprene and butadiene.
12. The disposable absorbent article of claim 11 , wherein greater than 90% of the isoprene and butadiene in the midblock are hydrogenated.
13. The disposable absorbent article of claim 1 , wherein the article is refastenable.
14. The disposable article of claim 1 , wherein the elastic film is joined to one or more nonwoven layers to form a laminate.
15. The disposable article of claim 14 , wherein the laminate has a Laminate Integrity Time of greater than 2 hours according to the Laminate Integrity Test.
16. A disposable absorbent article for wearing about the lower torso of a wearer, the absorbent article comprising:
a topsheet, a backsheet, and an absorbent core disposed therebetween, first and second opposing longitudinal side edges, a front waist region and an opposing back waist region;
a first ear extending outwardly from the first longitudinal side edge in the back waist region and joined to at least one of the topsheet, the backsheet, and the absorbent core;
a second ear extending outwardly from the second longitudinal side edge in the back waist region and joined to at least one of the topsheet, the backsheet, and the absorbent core;
at least one of the first and second ears comprising a laminate comprising a tear resistant elastic film material disposed between two nonwoven layers;
wherein a least a portion of one of the two nonwoven layers is activated and the laminate has a laminate integrity time of greater than 2 hours according to the Laminate Integrity Test; and
wherein the elastic film material has a time-to-fail of greater than 1 hour according to the Slow Tear Test and includes at least one SEEPS block copolymer having a T m of between about 10° C. and about 20° C.
17. The disposable absorbent article of claim 16 , wherein at least one of the first and second ears is breathable.
18. A prefastened pant comprising an elastic film material that resists the growth of a tear, the elastic film material comprising: an SEEPS block copolymer having a T m of between about 10° C. and about 20° C. wherein the film material has a time-to-fail of greater than 1 hour according to the Slow Tear Test.
19. The training pant of claim 18 , further comprising at least one refastenable fastener.
20. The training pant of claim 18 , further comprising a wetness indicator.