| abstract |
The moldable acoustic face material includes intertwined cellulosic fibers and synthetic fibers. The acoustic face material has a basis weight of about 1.5 to about 5.0 ounces per square yard (osy), a thickness of less than about 0.050 inches, an average pore size between about 8 microns and about 40 microns, and Has an elongation at break of at least 20 percent. The acoustic face material comprises less than about 5 percent synthetic microfibers and has an acoustic resistance of at least about 250 Rayls. |