| 20110064928 | NONWOVEN MATERIAL - Provided is a nonwoven material, including a spunbound layer including fibers having an average diameter between 12 and 25 microns, a meltblown layer adjacent to the spunbound layer and including fibers having an average diameter between 2 and 5 microns, and an electrospun layer adjacent to the meltblown layer and including nanofibers having an average diameter between 100 and 400 nanometers. Also provided is an electrospun layer having a basis weight of at least 0.2 gsm, the total basis weight of the meltblown layer is at least twice that of the electrospun layer, and the total basis weight of all of the meltblown layers in the material constitutes at least 3% of the basis weight of the material. Further provided is a spunbound layer that may have an average pore size between 70 and 120 microns, the meltblown layer may have an average pore size between 15 and 25 microns, and the electrospun layer may have an average pore size between 500 nanometers and 2 microns. | 03-17-2011 |
