| 摘要 |
The present invention provides an air permeable, substantially liquid impermeable barrier structure and products made therefrom, such as sanitary napkins, pantiliners, incontinence products and diapers. The barrier structure has a porous layer having opposing sides, the porous layer having: a porous substrate having pores, which extend between the opposing sides that correspond to the opposing sides of the porous layer, whereby a liquid may transverse the substrate; and particles that are fused to at least one side of the porous substrate so as to restrict entry of the liquid into the pores; wherein the porous layer resists penetration by the liquid when it is contained in an absorbent structure that overlays the side of the porous layer to which the particles are fused, and is under a loading of one pound per square inch; and wherein the porous layer has a Frazier air permeability value in the range of greater than zero to about 80 mm<3>/ft<2>/min (861 mm<3>/m<2>/min). The air permeable, substantially liquid impermeable barrier structure is distinguished by having the particles that are fused to the porous substrate being predominantly on the surface of the porous substrate rather than being admixed with and penetrating the depth of the materials that comprise the porous substrate. |
