| abstract |
The sheet consists of a matrix of fibers formed from an elastomeric copolymer A-B-A-B where A is a thermoplastic polymer block and B is a hydrogenated isoprene unit until substantially forming a poly (ethylene-propylene) monomer unit. Its modulus of elasticity is less than about 1.25 and it is locally constant during an elongation of up to 250%. The web may contain at least one type of non-elastic fibers (64) and / or particulate materials to form a composite (88). Combined with a puckering layer, it is useful in the manufacture, for example, of baby diapers. |