| 摘要 |
<p>Liner for CIPP rehabilitation comprising a layer of thermoplastic polymer material,a resin absorbent layer,thermosetting hot curing-resin impregnating the absorbent layer;wherein said thermoplastic is a heterophasic polyolefin composition (I) havingflexural modulus equal to or lower than 200 MPa, andcomprising a crystalline propylene homopolymer(a); and a copolymer or a composition of copolymers of ethylene with other alpha-olefins (b) containing from 15% by weight to less than 40% by weight of ethylene.</p> |
