Absorbent article with three-dimensional film for liquid distribution
View Patent ↗An absorbent article with a three-dimensional film transfer layer having an open lattice structure formed from a single film for improved user properties.
1. An absorbent article comprising:
a topsheet material having a first surface, a second surface and thickness there between;
a three dimensional film having a top plane, a thickness, a bottom plane, a width, a length and a loft, the loft comprising an open lattice structure comprising a random series of interconnected film fibers comprising a plurality of upper peaks and a plurality of lower peaks and a plurality of irregularly shaped apertures formed from the random series of interconnected film fibers, the interconnected film fibers being formed from the thickness of the film;
an absorbent core comprising a first surface, a second surface, a thickness between the first and second surfaces, a width and a length; and
a backsheet comprising a first surface, a second surface and a thickness between the first and second surfaces,
wherein the topsheet material second surface and the three-dimensional film top plane are in contiguous contact, the three-dimensional film bottom plane and the absorbent core first surface are in contiguous contact, the absorbent core second surface and the backsheet first surface are in contiguous contact, the topsheet material second surface and the backsheet first surface encompass the three-dimensional film width and length and the absorbent core width and length, the top plane is formed from upper peaks of the random series of interconnected film fibers, the bottom plane is formed from the lower peaks of the random series of interconnected film fibers and the three-dimensional film loft and the lower peaks of the random series of interconnected film fibers comprise the irregularly shaped apertures.
2. The absorbent article of claim 1 wherein the three-dimensional film lower peaks of the random series of interconnected film fibers correspond to the irregularly shaped apertures.
3. The absorbent article of claim 1 wherein the three-dimensional film strikethrough properties are less than 1 second.
4. The absorbent article of claim 1 wherein the three-dimensional film rewet is less than 1 gram.
5. The absorbent article of claim 1 wherein the three-dimensional film comprises a polyolefin.
6. The absorbent article of claim 1 wherein the topsheet comprises a nonwoven with a basis weight of 15-25 gsm.
7. The absorbent article of claim 1 wherein the topsheet is selected from a nonwoven spunbond, an air through bonded nonwoven and a spun lace.
8. The absorbent article of claim 5 wherein the polyolefin comprises polyethylene, polypropylene and mixtures thereof.
9. The absorbent article of claim 1 wherein the irregularly shaped apertures have sizes between about 3,000 and 1,250,000 square microns.
10. The absorbent article of claim 1 wherein the irregularly shaped apertures have effective diameters between about 60 and 1300 microns.
11. The absorbent article of claim 1 wherein the loft is between about 400 and 1200 microns.
12. The absorbent article of claim 11 wherein the loft is between about 450 and 1000 microns.
13. The absorbent article of claim 12 wherein the loft is between about 500 and 850 microns.
14. The absorbent article of claim 1 wherein the three dimensional film has a basis weight between about 20-40 gsm.
15. The absorbent article of claim 14 wherein the three dimensional film has a basis weight between about 22-32 gsm.
16. The absorbent article of claim 15 wherein the three dimensional film has a basis weight between about 22-26 gsm.
17. The absorbent article of claim 1 wherein the three dimensional film comprises at least one additive selected from a group comprising calcium carbonate, titanium dioxide, a surfactant and a process aid/plastomer.
18. The absorbent article of claim 17 wherein the three dimensional film comprises 4-5% titanium dioxide.
19. The absorbent article of claim 17 wherein the three dimensional film comprises 5-6% surfactant.