| abstract |
The nonwoven fabric (1) comprises two outer layers (3, 4) of fibers and at least one inner layer (2) of fibers having a different composition than that of the outer layers (3, 4). The nonwoven fabric (1) comprises building (7,8) and bonding (5,6) fibers which are at least partially composed of a lower melting polymer than that of the building fibers (7,8). The nonwoven fabric (1) is reinforced by holding on both sides to a certain depth, leaving a central area unencumbered. The invention also relates to a method for producing a nonwoven fabric. |