Apertured polymeric film webs and absorbent articles using such webs
A method for making an apertured polymeric film web, the method comprising the steps of: a. providing a polymeric film web; b. providing a first process selected from the group consisting of, hydroforming, vacuum forming, needle punching, mechanical embossing, flocking, ultrasonics, printed hair, brushing, and combinations thereof; c. providing a second process, different from the first process, the second process selected from the group consisting of, hydroforming, vacuum forming, needle punching, mechanical embossing, ultrasonics, stretch rupturing, hydrocutting, hydrosonics, slitting, ring-rolling, and combinations thereof; d. forming three dimensional surface structures in the polymeric film web by the first process; and e. forming fluid transport apertures in the polymeric film web by the second process.
1. A method for making an apertured polymeric film-based web having a first side and a second side, said method comprising the steps of:
a. providing a first process of vacuum forming, said first process comprising providing a debossing/perforating cylinder comprising a pattern of surface aberrations about its periphery;
b. extruding a resinous melt onto the surface of said debossing/perforating cylinder;
c. applying vacuum to the first side of the film-based web from within said debossing/perforating cylinder so as to form a polymeric film-based web comprising three dimensional surface structures in the form of apertured surface structures;
d. providing a second process that is distinct from said first process, said second process comprising providing a pair of first and second rolls arranged so as to engage each other, at least one of said pair of first and second rolls comprising heated needles or heated pins; and
e. forming fluid transport apertures in said polymeric film-based web by applying the heated needles or heated pins of said second process to the first side of the film-based web,
wherein said apertured surface structures on the first side are substantially maintained by conducting step (e).
2. The method of claim 1 , wherein the fluid transport apertures are generally elliptical in shape.
3. The method of claim 1 , wherein the fluid transport apertures are non-angular in shape.
4. The method of claim 1 , wherein land regions are formed between fluid transport apertures by conducting step (e), wherein the land regions are wider than the adjacent fluid transport apertures.
5. The method of claim 1 , wherein the fluid transport apertures comprise diameters of at least about 0.05 mm.
6. The method of claim 1 , wherein the three dimensional apertured surface structures comprise diameters of about 0.02 mm to about 0.2 mm.
7. The method of claim 1 , wherein the three dimensional apertured surface structures comprise open areas of about 0.003 mm 2 to about 0.03 mm 2 .
8. The method of claim 1 , wherein the three dimensional apertured surface structures comprise heights of about 0.02 mm to about 0.2 mm.
9. The method of claim 1 , wherein the three dimensional apertured surface structures comprise heights of 0.02 mm to less than 0.1 mm.
10. The method of claim 4 , wherein a plurality apertured surface structures are disposed between adjacent fluid transport apertures.