| 摘要 |
<p>The multilayer polymer complex is characterised in that it comprises: - two outer layers (1 and 2), one intended to be in contact with the substrate and the other intended to be in contact with the packaged product, layers (1 and 2) which consist of at least one thermoplastic polymer containing ionic and covalent bonds, namely an ionomer resin, - at least one inner "barrier" layer (3) consisting of at least one thermoplastic polymer of semicrystalline structure, namely a resin containing copolymers of vinyl alcohol and of ethylene, - and preferably an adhesive intermediate layer (4-5) inserted between the barrier layer (3) and each outer layer (1-2).</p> |
